/* * SSL client with options * * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * This file is part of mbed TLS (https://tls.mbed.org) */ #if !defined(MBEDTLS_CONFIG_FILE) #include "mbedtls/config.h" #else #include MBEDTLS_CONFIG_FILE #endif #if defined(MBEDTLS_PLATFORM_C) #include "mbedtls/platform.h" #else #include #include #define mbedtls_calloc calloc #define mbedtls_free free #define mbedtls_time time #define mbedtls_time_t time_t #define mbedtls_calloc calloc #define mbedtls_fprintf fprintf #define mbedtls_printf printf #define mbedtls_exit exit #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE #endif #if !defined(MBEDTLS_ENTROPY_C) || \ !defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_SRV_C) || \ !defined(MBEDTLS_NET_C) || !defined(MBEDTLS_CTR_DRBG_C) int main( void ) { mbedtls_printf("MBEDTLS_ENTROPY_C and/or " "MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or " "MBEDTLS_NET_C and/or MBEDTLS_CTR_DRBG_C and/or not defined.\n"); mbedtls_exit( 0 ); } #else #include "mbedtls/net_sockets.h" #include "mbedtls/ssl.h" #include "mbedtls/entropy.h" #include "mbedtls/ctr_drbg.h" #include "mbedtls/certs.h" #include "mbedtls/x509.h" #include "mbedtls/error.h" #include "mbedtls/debug.h" #include "mbedtls/timing.h" #include "mbedtls/base64.h" #if defined(MBEDTLS_USE_PSA_CRYPTO) #include "psa/crypto.h" #include "mbedtls/psa_util.h" #endif #include #include #include #include #if !defined(_MSC_VER) #include #endif #if !defined(_WIN32) #include #endif #if defined(MBEDTLS_SSL_CACHE_C) #include "mbedtls/ssl_cache.h" #endif #if defined(MBEDTLS_SSL_TICKET_C) #include "mbedtls/ssl_ticket.h" #endif #if defined(MBEDTLS_SSL_COOKIE_C) #include "mbedtls/ssl_cookie.h" #endif #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) #include "mbedtls/memory_buffer_alloc.h" #endif #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) && defined(MBEDTLS_FS_IO) #define SNI_OPTION #endif #if defined(_WIN32) #include #endif /* Size of memory to be allocated for the heap, when using the library's memory * management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */ #define MEMORY_HEAP_SIZE 120000 #define DFL_SERVER_ADDR NULL #define DFL_SERVER_PORT "4433" #define DFL_RESPONSE_SIZE -1 #define DFL_DEBUG_LEVEL 0 #define DFL_NBIO 0 #define DFL_EVENT 0 #define DFL_READ_TIMEOUT 0 #define DFL_CA_FILE "" #define DFL_CA_PATH "" #define DFL_CRT_FILE "" #define DFL_KEY_FILE "" #define DFL_CRT_FILE2 "" #define DFL_KEY_FILE2 "" #define DFL_ASYNC_OPERATIONS "-" #define DFL_ASYNC_PRIVATE_DELAY1 ( -1 ) #define DFL_ASYNC_PRIVATE_DELAY2 ( -1 ) #define DFL_ASYNC_PRIVATE_ERROR ( 0 ) #define DFL_PSK "" #define DFL_PSK_OPAQUE 0 #define DFL_PSK_LIST_OPAQUE 0 #define DFL_PSK_IDENTITY "Client_identity" #define DFL_ECJPAKE_PW NULL #define DFL_PSK_LIST NULL #define DFL_FORCE_CIPHER 0 #define DFL_VERSION_SUITES NULL #define DFL_RENEGOTIATION MBEDTLS_SSL_RENEGOTIATION_DISABLED #define DFL_ALLOW_LEGACY -2 #define DFL_RENEGOTIATE 0 #define DFL_RENEGO_DELAY -2 #define DFL_RENEGO_PERIOD ( (uint64_t)-1 ) #define DFL_EXCHANGES 1 #define DFL_MIN_VERSION -1 #define DFL_MAX_VERSION -1 #define DFL_ARC4 -1 #define DFL_SHA1 -1 #define DFL_CID_ENABLED 0 #define DFL_CID_VALUE "" #define DFL_CID_ENABLED_RENEGO -1 #define DFL_CID_VALUE_RENEGO NULL #define DFL_AUTH_MODE -1 #define DFL_CERT_REQ_CA_LIST MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED #define DFL_MFL_CODE MBEDTLS_SSL_MAX_FRAG_LEN_NONE #define DFL_TRUNC_HMAC -1 #define DFL_TICKETS MBEDTLS_SSL_SESSION_TICKETS_ENABLED #define DFL_TICKET_TIMEOUT 86400 #define DFL_CACHE_MAX -1 #define DFL_CACHE_TIMEOUT -1 #define DFL_SNI NULL #define DFL_ALPN_STRING NULL #define DFL_CURVES NULL #define DFL_DHM_FILE NULL #define DFL_TRANSPORT MBEDTLS_SSL_TRANSPORT_STREAM #define DFL_COOKIES 1 #define DFL_ANTI_REPLAY -1 #define DFL_HS_TO_MIN 0 #define DFL_HS_TO_MAX 0 #define DFL_DTLS_MTU -1 #define DFL_BADMAC_LIMIT -1 #define DFL_DGRAM_PACKING 1 #define DFL_EXTENDED_MS -1 #define DFL_ETM -1 #define DFL_SERIALIZE 0 #define DFL_CONTEXT_FILE "" #define DFL_EXTENDED_MS_ENFORCE -1 #define DFL_CA_CALLBACK 0 #define DFL_EAP_TLS 0 #define DFL_REPRODUCIBLE 0 #define DFL_NSS_KEYLOG 0 #define DFL_NSS_KEYLOG_FILE NULL #define LONG_RESPONSE "

01-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \ "02-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \ "03-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \ "04-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \ "05-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \ "06-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \ "07-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah

\r\n" /* Uncomment LONG_RESPONSE at the end of HTTP_RESPONSE to test sending longer * packets (for fragmentation purposes) */ #define HTTP_RESPONSE \ "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \ "

mbed TLS Test Server

\r\n" \ "

Successful connection using: %s

\r\n" // LONG_RESPONSE /* * Size of the basic I/O buffer. Able to hold our default response. * * You will need to adapt the mbedtls_ssl_get_bytes_avail() test in ssl-opt.sh * if you change this value to something outside the range <= 100 or > 500 */ #define DFL_IO_BUF_LEN 200 #if defined(MBEDTLS_X509_CRT_PARSE_C) #if defined(MBEDTLS_FS_IO) #define USAGE_IO \ " ca_file=%%s The single file containing the top-level CA(s) you fully trust\n" \ " default: \"\" (pre-loaded)\n" \ " use \"none\" to skip loading any top-level CAs.\n" \ " ca_path=%%s The path containing the top-level CA(s) you fully trust\n" \ " default: \"\" (pre-loaded) (overrides ca_file)\n" \ " use \"none\" to skip loading any top-level CAs.\n" \ " crt_file=%%s Your own cert and chain (in bottom to top order, top may be omitted)\n" \ " default: see note after key_file2\n" \ " key_file=%%s default: see note after key_file2\n" \ " crt_file2=%%s Your second cert and chain (in bottom to top order, top may be omitted)\n" \ " default: see note after key_file2\n" \ " key_file2=%%s default: see note below\n" \ " note: if neither crt_file/key_file nor crt_file2/key_file2 are used,\n" \ " preloaded certificate(s) and key(s) are used if available\n" \ " dhm_file=%%s File containing Diffie-Hellman parameters\n" \ " default: preloaded parameters\n" #else #define USAGE_IO \ "\n" \ " No file operations available (MBEDTLS_FS_IO not defined)\n" \ "\n" #endif /* MBEDTLS_FS_IO */ #else #define USAGE_IO "" #endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) #define USAGE_SSL_ASYNC \ " async_operations=%%c... d=decrypt, s=sign (default: -=off)\n" \ " async_private_delay1=%%d Asynchronous delay for key_file or preloaded key\n" \ " async_private_delay2=%%d Asynchronous delay for key_file2 and sni\n" \ " default: -1 (not asynchronous)\n" \ " async_private_error=%%d Async callback error injection (default=0=none,\n" \ " 1=start, 2=cancel, 3=resume, negative=first time only)" #else #define USAGE_SSL_ASYNC "" #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) #define USAGE_CID \ " cid=%%d Disable (0) or enable (1) the use of the DTLS Connection ID extension.\n" \ " default: 0 (disabled)\n" \ " cid_renego=%%d Disable (0) or enable (1) the use of the DTLS Connection ID extension during renegotiation.\n" \ " default: same as 'cid' parameter\n" \ " cid_val=%%s The CID to use for incoming messages (in hex, without 0x).\n" \ " default: \"\"\n" \ " cid_val_renego=%%s The CID to use for incoming messages (in hex, without 0x) after renegotiation.\n" \ " default: same as 'cid_val' parameter\n" #else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ #define USAGE_CID "" #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) #define USAGE_PSK_RAW \ " psk=%%s default: \"\" (disabled)\n" \ " The PSK values are in hex, without 0x.\n" \ " psk_list=%%s default: \"\"\n" \ " A list of (PSK identity, PSK value) pairs.\n" \ " The PSK values are in hex, without 0x.\n" \ " id1,psk1[,id2,psk2[,...]]\n" \ " psk_identity=%%s default: \"Client_identity\"\n" #if defined(MBEDTLS_USE_PSA_CRYPTO) #define USAGE_PSK_SLOT \ " psk_opaque=%%d default: 0 (don't use opaque static PSK)\n" \ " Enable this to store the PSK configured through command line\n" \ " parameter `psk` in a PSA-based key slot.\n" \ " Note: Currently only supported in conjunction with\n" \ " the use of min_version to force TLS 1.2 and force_ciphersuite \n" \ " to force a particular PSK-only ciphersuite.\n" \ " Note: This is to test integration of PSA-based opaque PSKs with\n" \ " Mbed TLS only. Production systems are likely to configure Mbed TLS\n" \ " with prepopulated key slots instead of importing raw key material.\n" \ " psk_list_opaque=%%d default: 0 (don't use opaque dynamic PSKs)\n" \ " Enable this to store the list of dynamically chosen PSKs configured\n" \ " through the command line parameter `psk_list` in PSA-based key slots.\n" \ " Note: Currently only supported in conjunction with\n" \ " the use of min_version to force TLS 1.2 and force_ciphersuite \n" \ " to force a particular PSK-only ciphersuite.\n" \ " Note: This is to test integration of PSA-based opaque PSKs with\n" \ " Mbed TLS only. Production systems are likely to configure Mbed TLS\n" \ " with prepopulated key slots instead of importing raw key material.\n" #else #define USAGE_PSK_SLOT "" #endif /* MBEDTLS_USE_PSA_CRYPTO */ #define USAGE_PSK USAGE_PSK_RAW USAGE_PSK_SLOT #else #define USAGE_PSK "" #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */ #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) #define USAGE_CA_CALLBACK \ " ca_callback=%%d default: 0 (disabled)\n" \ " Enable this to use the trusted certificate callback function\n" #else #define USAGE_CA_CALLBACK "" #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */ #if defined(MBEDTLS_SSL_SESSION_TICKETS) #define USAGE_TICKETS \ " tickets=%%d default: 1 (enabled)\n" \ " ticket_timeout=%%d default: 86400 (one day)\n" #else #define USAGE_TICKETS "" #endif /* MBEDTLS_SSL_SESSION_TICKETS */ #if defined(MBEDTLS_SSL_EXPORT_KEYS) #define USAGE_EAP_TLS \ " eap_tls=%%d default: 0 (disabled)\n" #define USAGE_NSS_KEYLOG \ " nss_keylog=%%d default: 0 (disabled)\n" \ " This cannot be used with eap_tls=1\n" #define USAGE_NSS_KEYLOG_FILE \ " nss_keylog_file=%%s\n" #else #define USAGE_EAP_TLS "" #define USAGE_NSS_KEYLOG "" #define USAGE_NSS_KEYLOG_FILE "" #endif /* MBEDTLS_SSL_EXPORT_KEYS */ #if defined(MBEDTLS_SSL_CACHE_C) #define USAGE_CACHE \ " cache_max=%%d default: cache default (50)\n" \ " cache_timeout=%%d default: cache default (1d)\n" #else #define USAGE_CACHE "" #endif /* MBEDTLS_SSL_CACHE_C */ #if defined(SNI_OPTION) #if defined(MBEDTLS_X509_CRL_PARSE_C) #define SNI_CRL ",crl" #else #define SNI_CRL "" #endif #define USAGE_SNI \ " sni=%%s name1,cert1,key1,ca1"SNI_CRL",auth1[,...]\n" \ " default: disabled\n" #else #define USAGE_SNI "" #endif /* SNI_OPTION */ #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) #define USAGE_MAX_FRAG_LEN \ " max_frag_len=%%d default: 16384 (tls default)\n" \ " options: 512, 1024, 2048, 4096\n" #else #define USAGE_MAX_FRAG_LEN "" #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */ #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) #define USAGE_TRUNC_HMAC \ " trunc_hmac=%%d default: library default\n" #else #define USAGE_TRUNC_HMAC "" #endif #if defined(MBEDTLS_SSL_ALPN) #define USAGE_ALPN \ " alpn=%%s default: \"\" (disabled)\n" \ " example: spdy/1,http/1.1\n" #else #define USAGE_ALPN "" #endif /* MBEDTLS_SSL_ALPN */ #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) #define USAGE_COOKIES \ " cookies=0/1/-1 default: 1 (enabled)\n" \ " 0: disabled, -1: library default (broken)\n" #else #define USAGE_COOKIES "" #endif #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) #define USAGE_ANTI_REPLAY \ " anti_replay=0/1 default: (library default: enabled)\n" #else #define USAGE_ANTI_REPLAY "" #endif #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) #define USAGE_BADMAC_LIMIT \ " badmac_limit=%%d default: (library default: disabled)\n" #else #define USAGE_BADMAC_LIMIT "" #endif #if defined(MBEDTLS_SSL_PROTO_DTLS) #define USAGE_DTLS \ " dtls=%%d default: 0 (TLS)\n" \ " hs_timeout=%%d-%%d default: (library default: 1000-60000)\n" \ " range of DTLS handshake timeouts in millisecs\n" \ " mtu=%%d default: (library default: unlimited)\n" \ " dgram_packing=%%d default: 1 (allowed)\n" \ " allow or forbid packing of multiple\n" \ " records within a single datgram.\n" #else #define USAGE_DTLS "" #endif #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) #define USAGE_EMS \ " extended_ms=0/1 default: (library default: on)\n" #else #define USAGE_EMS "" #endif #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) #define USAGE_ETM \ " etm=0/1 default: (library default: on)\n" #else #define USAGE_ETM "" #endif #define USAGE_REPRODUCIBLE \ " reproducible=0/1 default: 0 (disabled)\n" #if defined(MBEDTLS_SSL_RENEGOTIATION) #define USAGE_RENEGO \ " renegotiation=%%d default: 0 (disabled)\n" \ " renegotiate=%%d default: 0 (disabled)\n" \ " renego_delay=%%d default: -2 (library default)\n" \ " renego_period=%%d default: (2^64 - 1 for TLS, 2^48 - 1 for DTLS)\n" #else #define USAGE_RENEGO "" #endif #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) #define USAGE_ECJPAKE \ " ecjpake_pw=%%s default: none (disabled)\n" #else #define USAGE_ECJPAKE "" #endif #if defined(MBEDTLS_ECP_C) #define USAGE_CURVES \ " curves=a,b,c,d default: \"default\" (library default)\n" \ " example: \"secp521r1,brainpoolP512r1\"\n" \ " - use \"none\" for empty list\n" \ " - see mbedtls_ecp_curve_list()\n" \ " for acceptable curve names\n" #else #define USAGE_CURVES "" #endif #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) #define USAGE_SERIALIZATION \ " serialize=%%d default: 0 (do not serialize/deserialize)\n" \ " options: 1 (serialize)\n" \ " 2 (serialize with re-initialization)\n" \ " context_file=%%s The file path to write a serialized connection\n"\ " in the form of base64 code (serialize option\n" \ " must be set)\n" \ " default: \"\" (do nothing)\n" \ " option: a file path\n" #else #define USAGE_SERIALIZATION "" #endif /* USAGE is arbitrarily split to stay under the portable string literal * length limit: 4095 bytes in C99. */ #define USAGE1 \ "\n usage: ssl_server2 param=<>...\n" \ "\n acceptable parameters:\n" \ " server_addr=%%s default: (all interfaces)\n" \ " server_port=%%d default: 4433\n" \ " debug_level=%%d default: 0 (disabled)\n" \ " buffer_size=%%d default: 200 \n" \ " (minimum: 1, max: 16385)\n" \ " response_size=%%d default: about 152 (basic response)\n" \ " (minimum: 0, max: 16384)\n" \ " increases buffer_size if bigger\n"\ " nbio=%%d default: 0 (blocking I/O)\n" \ " options: 1 (non-blocking), 2 (added delays)\n" \ " event=%%d default: 0 (loop)\n" \ " options: 1 (level-triggered, implies nbio=1),\n" \ " read_timeout=%%d default: 0 ms (no timeout)\n" \ "\n" \ USAGE_DTLS \ USAGE_COOKIES \ USAGE_ANTI_REPLAY \ USAGE_BADMAC_LIMIT \ "\n" #define USAGE2 \ " auth_mode=%%s default: (library default: none)\n" \ " options: none, optional, required\n" \ " cert_req_ca_list=%%d default: 1 (send ca list)\n" \ " options: 1 (send ca list), 0 (don't send)\n" \ USAGE_IO \ USAGE_SSL_ASYNC \ USAGE_SNI \ "\n" \ USAGE_PSK \ USAGE_CA_CALLBACK \ USAGE_ECJPAKE \ "\n" #define USAGE3 \ " allow_legacy=%%d default: (library default: no)\n" \ USAGE_RENEGO \ " exchanges=%%d default: 1\n" \ "\n" \ USAGE_TICKETS \ USAGE_EAP_TLS \ USAGE_REPRODUCIBLE \ USAGE_NSS_KEYLOG \ USAGE_NSS_KEYLOG_FILE \ USAGE_CACHE \ USAGE_MAX_FRAG_LEN \ USAGE_TRUNC_HMAC \ USAGE_ALPN \ USAGE_EMS \ USAGE_ETM \ USAGE_CURVES \ "\n" #define USAGE4 \ " arc4=%%d default: (library default: 0)\n" \ " allow_sha1=%%d default: 0\n" \ " min_version=%%s default: (library default: tls1)\n" \ " max_version=%%s default: (library default: tls1_2)\n" \ " force_version=%%s default: \"\" (none)\n" \ " options: ssl3, tls1, tls1_1, tls1_2, dtls1, dtls1_2\n" \ "\n" \ " version_suites=a,b,c,d per-version ciphersuites\n" \ " in order from ssl3 to tls1_2\n" \ " default: all enabled\n" \ " force_ciphersuite= default: all enabled\n" \ " query_config= return 0 if the specified\n" \ " configuration macro is defined and 1\n" \ " otherwise. The expansion of the macro\n" \ " is printed if it is defined\n" \ USAGE_SERIALIZATION \ " acceptable ciphersuite names:\n" #define ALPN_LIST_SIZE 10 #define CURVE_LIST_SIZE 20 #define PUT_UINT64_BE(out_be,in_le,i) \ { \ (out_be)[(i) + 0] = (unsigned char)( ( (in_le) >> 56 ) & 0xFF ); \ (out_be)[(i) + 1] = (unsigned char)( ( (in_le) >> 48 ) & 0xFF ); \ (out_be)[(i) + 2] = (unsigned char)( ( (in_le) >> 40 ) & 0xFF ); \ (out_be)[(i) + 3] = (unsigned char)( ( (in_le) >> 32 ) & 0xFF ); \ (out_be)[(i) + 4] = (unsigned char)( ( (in_le) >> 24 ) & 0xFF ); \ (out_be)[(i) + 5] = (unsigned char)( ( (in_le) >> 16 ) & 0xFF ); \ (out_be)[(i) + 6] = (unsigned char)( ( (in_le) >> 8 ) & 0xFF ); \ (out_be)[(i) + 7] = (unsigned char)( ( (in_le) >> 0 ) & 0xFF ); \ } /* * global options */ struct options { const char *server_addr; /* address on which the ssl service runs */ const char *server_port; /* port on which the ssl service runs */ int debug_level; /* level of debugging */ int nbio; /* should I/O be blocking? */ int event; /* loop or event-driven IO? level or edge triggered? */ uint32_t read_timeout; /* timeout on mbedtls_ssl_read() in milliseconds */ int response_size; /* pad response with header to requested size */ uint16_t buffer_size; /* IO buffer size */ const char *ca_file; /* the file with the CA certificate(s) */ const char *ca_path; /* the path with the CA certificate(s) reside */ const char *crt_file; /* the file with the server certificate */ const char *key_file; /* the file with the server key */ const char *crt_file2; /* the file with the 2nd server certificate */ const char *key_file2; /* the file with the 2nd server key */ const char *async_operations; /* supported SSL asynchronous operations */ int async_private_delay1; /* number of times f_async_resume needs to be called for key 1, or -1 for no async */ int async_private_delay2; /* number of times f_async_resume needs to be called for key 2, or -1 for no async */ int async_private_error; /* inject error in async private callback */ #if defined(MBEDTLS_USE_PSA_CRYPTO) int psk_opaque; int psk_list_opaque; #endif #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) int ca_callback; /* Use callback for trusted certificate list */ #endif const char *psk; /* the pre-shared key */ const char *psk_identity; /* the pre-shared key identity */ char *psk_list; /* list of PSK id/key pairs for callback */ const char *ecjpake_pw; /* the EC J-PAKE password */ int force_ciphersuite[2]; /* protocol/ciphersuite to use, or all */ const char *version_suites; /* per-version ciphersuites */ int renegotiation; /* enable / disable renegotiation */ int allow_legacy; /* allow legacy renegotiation */ int renegotiate; /* attempt renegotiation? */ int renego_delay; /* delay before enforcing renegotiation */ uint64_t renego_period; /* period for automatic renegotiation */ int exchanges; /* number of data exchanges */ int min_version; /* minimum protocol version accepted */ int max_version; /* maximum protocol version accepted */ int arc4; /* flag for arc4 suites support */ int allow_sha1; /* flag for SHA-1 support */ int auth_mode; /* verify mode for connection */ int cert_req_ca_list; /* should we send the CA list? */ unsigned char mfl_code; /* code for maximum fragment length */ int trunc_hmac; /* accept truncated hmac? */ int tickets; /* enable / disable session tickets */ int ticket_timeout; /* session ticket lifetime */ int cache_max; /* max number of session cache entries */ int cache_timeout; /* expiration delay of session cache entries */ char *sni; /* string describing sni information */ const char *curves; /* list of supported elliptic curves */ const char *alpn_string; /* ALPN supported protocols */ const char *dhm_file; /* the file with the DH parameters */ int extended_ms; /* allow negotiation of extended MS? */ int etm; /* allow negotiation of encrypt-then-MAC? */ int transport; /* TLS or DTLS? */ int cookies; /* Use cookies for DTLS? -1 to break them */ int anti_replay; /* Use anti-replay for DTLS? -1 for default */ uint32_t hs_to_min; /* Initial value of DTLS handshake timer */ uint32_t hs_to_max; /* Max value of DTLS handshake timer */ int dtls_mtu; /* UDP Maximum tranport unit for DTLS */ int dgram_packing; /* allow/forbid datagram packing */ int badmac_limit; /* Limit of records with bad MAC */ int eap_tls; /* derive EAP-TLS keying material? */ int nss_keylog; /* export NSS key log material */ const char *nss_keylog_file; /* NSS key log file */ int cid_enabled; /* whether to use the CID extension or not */ int cid_enabled_renego; /* whether to use the CID extension or not * during renegotiation */ const char *cid_val; /* the CID to use for incoming messages */ int serialize; /* serialize/deserialize connection */ const char *context_file; /* the file to write a serialized connection * in the form of base64 code (serialize * option must be set) */ const char *cid_val_renego; /* the CID to use for incoming messages * after renegotiation */ int reproducible; /* make communication reproducible */ } opt; int query_config( const char *config ); #if defined(MBEDTLS_SSL_EXPORT_KEYS) typedef struct eap_tls_keys { unsigned char master_secret[48]; unsigned char randbytes[64]; mbedtls_tls_prf_types tls_prf_type; } eap_tls_keys; static int eap_tls_key_derivation ( void *p_expkey, const unsigned char *ms, const unsigned char *kb, size_t maclen, size_t keylen, size_t ivlen, const unsigned char client_random[32], const unsigned char server_random[32], mbedtls_tls_prf_types tls_prf_type ) { eap_tls_keys *keys = (eap_tls_keys *)p_expkey; ( ( void ) kb ); memcpy( keys->master_secret, ms, sizeof( keys->master_secret ) ); memcpy( keys->randbytes, client_random, 32 ); memcpy( keys->randbytes + 32, server_random, 32 ); keys->tls_prf_type = tls_prf_type; if( opt.debug_level > 2 ) { mbedtls_printf("exported maclen is %u\n", (unsigned)maclen); mbedtls_printf("exported keylen is %u\n", (unsigned)keylen); mbedtls_printf("exported ivlen is %u\n", (unsigned)ivlen); } return( 0 ); } static int nss_keylog_export( void *p_expkey, const unsigned char *ms, const unsigned char *kb, size_t maclen, size_t keylen, size_t ivlen, const unsigned char client_random[32], const unsigned char server_random[32], mbedtls_tls_prf_types tls_prf_type ) { char nss_keylog_line[ 200 ]; size_t const client_random_len = 32; size_t const master_secret_len = 48; size_t len = 0; size_t j; int ret = 0; ((void) p_expkey); ((void) kb); ((void) maclen); ((void) keylen); ((void) ivlen); ((void) server_random); ((void) tls_prf_type); len += sprintf( nss_keylog_line + len, "%s", "CLIENT_RANDOM " ); for( j = 0; j < client_random_len; j++ ) { len += sprintf( nss_keylog_line + len, "%02x", client_random[j] ); } len += sprintf( nss_keylog_line + len, " " ); for( j = 0; j < master_secret_len; j++ ) { len += sprintf( nss_keylog_line + len, "%02x", ms[j] ); } len += sprintf( nss_keylog_line + len, "\n" ); nss_keylog_line[ len ] = '\0'; mbedtls_printf( "\n" ); mbedtls_printf( "---------------- NSS KEYLOG -----------------\n" ); mbedtls_printf( "%s", nss_keylog_line ); mbedtls_printf( "---------------------------------------------\n" ); if( opt.nss_keylog_file != NULL ) { FILE *f; if( ( f = fopen( opt.nss_keylog_file, "a" ) ) == NULL ) { ret = -1; goto exit; } if( fwrite( nss_keylog_line, 1, len, f ) != len ) { ret = -1; fclose( f ); goto exit; } fclose( f ); } exit: mbedtls_platform_zeroize( nss_keylog_line, sizeof( nss_keylog_line ) ); return( ret ); } #endif static void my_debug( void *ctx, int level, const char *file, int line, const char *str ) { const char *p, *basename; /* Extract basename from file */ for( p = basename = file; *p != '\0'; p++ ) if( *p == '/' || *p == '\\' ) basename = p + 1; mbedtls_fprintf( (FILE *) ctx, "%s:%04d: |%d| %s", basename, line, level, str ); fflush( (FILE *) ctx ); } mbedtls_time_t dummy_constant_time( mbedtls_time_t* time ) { (void) time; return 0x5af2a056; } int dummy_entropy( void *data, unsigned char *output, size_t len ) { size_t i; int ret; (void) data; ret = mbedtls_entropy_func( data, output, len ); for (i = 0; i < len; i++ ) { //replace result with pseudo random output[i] = (unsigned char) rand(); } return( ret ); } #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) int ca_callback( void *data, mbedtls_x509_crt const *child, mbedtls_x509_crt **candidates) { int ret = 0; mbedtls_x509_crt *ca = (mbedtls_x509_crt *) data; mbedtls_x509_crt *first; /* This is a test-only implementation of the CA callback * which always returns the entire list of trusted certificates. * Production implementations managing a large number of CAs * should use an efficient presentation and lookup for the * set of trusted certificates (such as a hashtable) and only * return those trusted certificates which satisfy basic * parental checks, such as the matching of child `Issuer` * and parent `Subject` field. */ ((void) child); first = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ); if( first == NULL ) { ret = -1; goto exit; } mbedtls_x509_crt_init( first ); if( mbedtls_x509_crt_parse_der( first, ca->raw.p, ca->raw.len ) != 0 ) { ret = -1; goto exit; } while( ca->next != NULL ) { ca = ca->next; if( mbedtls_x509_crt_parse_der( first, ca->raw.p, ca->raw.len ) != 0 ) { ret = -1; goto exit; } } exit: if( ret != 0 ) { mbedtls_x509_crt_free( first ); mbedtls_free( first ); first = NULL; } *candidates = first; return( ret ); } #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */ /* * Test recv/send functions that make sure each try returns * WANT_READ/WANT_WRITE at least once before sucesseding */ static int delayed_recv( void *ctx, unsigned char *buf, size_t len ) { static int first_try = 1; int ret; if( first_try ) { first_try = 0; return( MBEDTLS_ERR_SSL_WANT_READ ); } ret = mbedtls_net_recv( ctx, buf, len ); if( ret != MBEDTLS_ERR_SSL_WANT_READ ) first_try = 1; /* Next call will be a new operation */ return( ret ); } static int delayed_send( void *ctx, const unsigned char *buf, size_t len ) { static int first_try = 1; int ret; if( first_try ) { first_try = 0; return( MBEDTLS_ERR_SSL_WANT_WRITE ); } ret = mbedtls_net_send( ctx, buf, len ); if( ret != MBEDTLS_ERR_SSL_WANT_WRITE ) first_try = 1; /* Next call will be a new operation */ return( ret ); } typedef struct { mbedtls_ssl_context *ssl; mbedtls_net_context *net; } io_ctx_t; #if defined(MBEDTLS_SSL_RECORD_CHECKING) static int ssl_check_record( mbedtls_ssl_context const *ssl, unsigned char const *buf, size_t len ) { int ret; unsigned char *tmp_buf; /* Record checking may modify the input buffer, * so make a copy. */ tmp_buf = mbedtls_calloc( 1, len ); if( tmp_buf == NULL ) return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); memcpy( tmp_buf, buf, len ); ret = mbedtls_ssl_check_record( ssl, tmp_buf, len ); if( ret != MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE ) { int ret_repeated; /* Test-only: Make sure that mbedtls_ssl_check_record() * doesn't alter state. */ memcpy( tmp_buf, buf, len ); /* Restore buffer */ ret_repeated = mbedtls_ssl_check_record( ssl, tmp_buf, len ); if( ret != ret_repeated ) { mbedtls_printf( "mbedtls_ssl_check_record() returned inconsistent results.\n" ); return( -1 ); } switch( ret ) { case 0: break; case MBEDTLS_ERR_SSL_INVALID_RECORD: if( opt.debug_level > 1 ) mbedtls_printf( "mbedtls_ssl_check_record() detected invalid record.\n" ); break; case MBEDTLS_ERR_SSL_INVALID_MAC: if( opt.debug_level > 1 ) mbedtls_printf( "mbedtls_ssl_check_record() detected unauthentic record.\n" ); break; case MBEDTLS_ERR_SSL_UNEXPECTED_RECORD: if( opt.debug_level > 1 ) mbedtls_printf( "mbedtls_ssl_check_record() detected unexpected record.\n" ); break; default: mbedtls_printf( "mbedtls_ssl_check_record() failed fatally with -%#04x.\n", (unsigned int) -ret ); return( -1 ); } /* Regardless of the outcome, forward the record to the stack. */ } mbedtls_free( tmp_buf ); return( 0 ); } #endif /* MBEDTLS_SSL_RECORD_CHECKING */ static int recv_cb( void *ctx, unsigned char *buf, size_t len ) { io_ctx_t *io_ctx = (io_ctx_t*) ctx; size_t recv_len; int ret; if( opt.nbio == 2 ) ret = delayed_recv( io_ctx->net, buf, len ); else ret = mbedtls_net_recv( io_ctx->net, buf, len ); if( ret < 0 ) return( ret ); recv_len = (size_t) ret; if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { /* Here's the place to do any datagram/record checking * in between receiving the packet from the underlying * transport and passing it on to the TLS stack. */ #if defined(MBEDTLS_SSL_RECORD_CHECKING) if( ssl_check_record( io_ctx->ssl, buf, recv_len ) != 0 ) return( -1 ); #endif /* MBEDTLS_SSL_RECORD_CHECKING */ } return( (int) recv_len ); } static int recv_timeout_cb( void *ctx, unsigned char *buf, size_t len, uint32_t timeout ) { io_ctx_t *io_ctx = (io_ctx_t*) ctx; int ret; size_t recv_len; ret = mbedtls_net_recv_timeout( io_ctx->net, buf, len, timeout ); if( ret < 0 ) return( ret ); recv_len = (size_t) ret; if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { /* Here's the place to do any datagram/record checking * in between receiving the packet from the underlying * transport and passing it on to the TLS stack. */ #if defined(MBEDTLS_SSL_RECORD_CHECKING) if( ssl_check_record( io_ctx->ssl, buf, recv_len ) != 0 ) return( -1 ); #endif /* MBEDTLS_SSL_RECORD_CHECKING */ } return( (int) recv_len ); } static int send_cb( void *ctx, unsigned char const *buf, size_t len ) { io_ctx_t *io_ctx = (io_ctx_t*) ctx; if( opt.nbio == 2 ) return( delayed_send( io_ctx->net, buf, len ) ); return( mbedtls_net_send( io_ctx->net, buf, len ) ); } /* * Return authmode from string, or -1 on error */ static int get_auth_mode( const char *s ) { if( strcmp( s, "none" ) == 0 ) return( MBEDTLS_SSL_VERIFY_NONE ); if( strcmp( s, "optional" ) == 0 ) return( MBEDTLS_SSL_VERIFY_OPTIONAL ); if( strcmp( s, "required" ) == 0 ) return( MBEDTLS_SSL_VERIFY_REQUIRED ); return( -1 ); } /* * Used by sni_parse and psk_parse to handle coma-separated lists */ #define GET_ITEM( dst ) \ do \ { \ (dst) = p; \ while( *p != ',' ) \ if( ++p > end ) \ goto error; \ *p++ = '\0'; \ } while( 0 ) #if defined(SNI_OPTION) typedef struct _sni_entry sni_entry; struct _sni_entry { const char *name; mbedtls_x509_crt *cert; mbedtls_pk_context *key; mbedtls_x509_crt* ca; mbedtls_x509_crl* crl; int authmode; sni_entry *next; }; void sni_free( sni_entry *head ) { sni_entry *cur = head, *next; while( cur != NULL ) { mbedtls_x509_crt_free( cur->cert ); mbedtls_free( cur->cert ); mbedtls_pk_free( cur->key ); mbedtls_free( cur->key ); mbedtls_x509_crt_free( cur->ca ); mbedtls_free( cur->ca ); #if defined(MBEDTLS_X509_CRL_PARSE_C) mbedtls_x509_crl_free( cur->crl ); mbedtls_free( cur->crl ); #endif next = cur->next; mbedtls_free( cur ); cur = next; } } /* * Parse a string of sextuples name1,crt1,key1,ca1,crl1,auth1[,...] * into a usable sni_entry list. For ca1, crl1, auth1, the special value * '-' means unset. If ca1 is unset, then crl1 is ignored too. * * Modifies the input string! This is not production quality! */ sni_entry *sni_parse( char *sni_string ) { sni_entry *cur = NULL, *new = NULL; char *p = sni_string; char *end = p; char *crt_file, *key_file, *ca_file, *auth_str; #if defined(MBEDTLS_X509_CRL_PARSE_C) char *crl_file; #endif while( *end != '\0' ) ++end; *end = ','; while( p <= end ) { if( ( new = mbedtls_calloc( 1, sizeof( sni_entry ) ) ) == NULL ) { sni_free( cur ); return( NULL ); } GET_ITEM( new->name ); GET_ITEM( crt_file ); GET_ITEM( key_file ); GET_ITEM( ca_file ); #if defined(MBEDTLS_X509_CRL_PARSE_C) GET_ITEM( crl_file ); #endif GET_ITEM( auth_str ); if( ( new->cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ) ) == NULL || ( new->key = mbedtls_calloc( 1, sizeof( mbedtls_pk_context ) ) ) == NULL ) goto error; mbedtls_x509_crt_init( new->cert ); mbedtls_pk_init( new->key ); if( mbedtls_x509_crt_parse_file( new->cert, crt_file ) != 0 || mbedtls_pk_parse_keyfile( new->key, key_file, "" ) != 0 ) goto error; if( strcmp( ca_file, "-" ) != 0 ) { if( ( new->ca = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ) ) == NULL ) goto error; mbedtls_x509_crt_init( new->ca ); if( mbedtls_x509_crt_parse_file( new->ca, ca_file ) != 0 ) goto error; } #if defined(MBEDTLS_X509_CRL_PARSE_C) if( strcmp( crl_file, "-" ) != 0 ) { if( ( new->crl = mbedtls_calloc( 1, sizeof( mbedtls_x509_crl ) ) ) == NULL ) goto error; mbedtls_x509_crl_init( new->crl ); if( mbedtls_x509_crl_parse_file( new->crl, crl_file ) != 0 ) goto error; } #endif if( strcmp( auth_str, "-" ) != 0 ) { if( ( new->authmode = get_auth_mode( auth_str ) ) < 0 ) goto error; } else new->authmode = DFL_AUTH_MODE; new->next = cur; cur = new; } return( cur ); error: sni_free( new ); sni_free( cur ); return( NULL ); } /* * SNI callback. */ int sni_callback( void *p_info, mbedtls_ssl_context *ssl, const unsigned char *name, size_t name_len ) { const sni_entry *cur = (const sni_entry *) p_info; while( cur != NULL ) { if( name_len == strlen( cur->name ) && memcmp( name, cur->name, name_len ) == 0 ) { if( cur->ca != NULL ) mbedtls_ssl_set_hs_ca_chain( ssl, cur->ca, cur->crl ); if( cur->authmode != DFL_AUTH_MODE ) mbedtls_ssl_set_hs_authmode( ssl, cur->authmode ); return( mbedtls_ssl_set_hs_own_cert( ssl, cur->cert, cur->key ) ); } cur = cur->next; } return( -1 ); } #endif /* SNI_OPTION */ #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) || \ defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) #define HEX2NUM( c ) \ do \ { \ if( (c) >= '0' && (c) <= '9' ) \ (c) -= '0'; \ else if( (c) >= 'a' && (c) <= 'f' ) \ (c) -= 'a' - 10; \ else if( (c) >= 'A' && (c) <= 'F' ) \ (c) -= 'A' - 10; \ else \ return( -1 ); \ } while( 0 ) /* * Convert a hex string to bytes. * Return 0 on success, -1 on error. */ int unhexify( unsigned char *output, const char *input, size_t *olen ) { unsigned char c; size_t j; *olen = strlen( input ); if( *olen % 2 != 0 || *olen / 2 > MBEDTLS_PSK_MAX_LEN ) return( -1 ); *olen /= 2; for( j = 0; j < *olen * 2; j += 2 ) { c = input[j]; HEX2NUM( c ); output[ j / 2 ] = c << 4; c = input[j + 1]; HEX2NUM( c ); output[ j / 2 ] |= c; } return( 0 ); } #endif #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) typedef struct _psk_entry psk_entry; struct _psk_entry { const char *name; size_t key_len; unsigned char key[MBEDTLS_PSK_MAX_LEN]; #if defined(MBEDTLS_USE_PSA_CRYPTO) psa_key_handle_t slot; #endif /* MBEDTLS_USE_PSA_CRYPTO */ psk_entry *next; }; /* * Free a list of psk_entry's */ int psk_free( psk_entry *head ) { psk_entry *next; while( head != NULL ) { #if defined(MBEDTLS_USE_PSA_CRYPTO) psa_status_t status; psa_key_handle_t const slot = head->slot; if( slot != 0 ) { status = psa_destroy_key( slot ); if( status != PSA_SUCCESS ) return( status ); } #endif /* MBEDTLS_USE_PSA_CRYPTO */ next = head->next; mbedtls_free( head ); head = next; } return( 0 ); } /* * Parse a string of pairs name1,key1[,name2,key2[,...]] * into a usable psk_entry list. * * Modifies the input string! This is not production quality! */ psk_entry *psk_parse( char *psk_string ) { psk_entry *cur = NULL, *new = NULL; char *p = psk_string; char *end = p; char *key_hex; while( *end != '\0' ) ++end; *end = ','; while( p <= end ) { if( ( new = mbedtls_calloc( 1, sizeof( psk_entry ) ) ) == NULL ) goto error; memset( new, 0, sizeof( psk_entry ) ); GET_ITEM( new->name ); GET_ITEM( key_hex ); if( unhexify( new->key, key_hex, &new->key_len ) != 0 ) goto error; new->next = cur; cur = new; } return( cur ); error: psk_free( new ); psk_free( cur ); return( 0 ); } /* * PSK callback */ int psk_callback( void *p_info, mbedtls_ssl_context *ssl, const unsigned char *name, size_t name_len ) { psk_entry *cur = (psk_entry *) p_info; while( cur != NULL ) { if( name_len == strlen( cur->name ) && memcmp( name, cur->name, name_len ) == 0 ) { #if defined(MBEDTLS_USE_PSA_CRYPTO) if( cur->slot != 0 ) return( mbedtls_ssl_set_hs_psk_opaque( ssl, cur->slot ) ); else #endif return( mbedtls_ssl_set_hs_psk( ssl, cur->key, cur->key_len ) ); } cur = cur->next; } return( -1 ); } #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */ static mbedtls_net_context listen_fd, client_fd; /* Interruption handler to ensure clean exit (for valgrind testing) */ #if !defined(_WIN32) static int received_sigterm = 0; void term_handler( int sig ) { ((void) sig); received_sigterm = 1; mbedtls_net_free( &listen_fd ); /* causes mbedtls_net_accept() to abort */ mbedtls_net_free( &client_fd ); /* causes net_read() to abort */ } #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) static int ssl_sig_hashes_for_test[] = { #if defined(MBEDTLS_SHA512_C) MBEDTLS_MD_SHA512, MBEDTLS_MD_SHA384, #endif #if defined(MBEDTLS_SHA256_C) MBEDTLS_MD_SHA256, MBEDTLS_MD_SHA224, #endif #if defined(MBEDTLS_SHA1_C) /* Allow SHA-1 as we use it extensively in tests. */ MBEDTLS_MD_SHA1, #endif MBEDTLS_MD_NONE }; #endif /* MBEDTLS_X509_CRT_PARSE_C */ /** Return true if \p ret is a status code indicating that there is an * operation in progress on an SSL connection, and false if it indicates * success or a fatal error. * * The possible operations in progress are: * * - A read, when the SSL input buffer does not contain a full message. * - A write, when the SSL output buffer contains some data that has not * been sent over the network yet. * - An asynchronous callback that has not completed yet. */ static int mbedtls_status_is_ssl_in_progress( int ret ) { return( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE || ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS ); } #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) typedef struct { mbedtls_x509_crt *cert; /*!< Certificate corresponding to the key */ mbedtls_pk_context *pk; /*!< Private key */ unsigned delay; /*!< Number of resume steps to go through */ unsigned pk_owned : 1; /*!< Whether to free the pk object on exit */ } ssl_async_key_slot_t; typedef enum { SSL_ASYNC_INJECT_ERROR_NONE = 0, /*!< Let the callbacks succeed */ SSL_ASYNC_INJECT_ERROR_START, /*!< Inject error during start */ SSL_ASYNC_INJECT_ERROR_CANCEL, /*!< Close the connection after async start */ SSL_ASYNC_INJECT_ERROR_RESUME, /*!< Inject error during resume */ #define SSL_ASYNC_INJECT_ERROR_MAX SSL_ASYNC_INJECT_ERROR_RESUME } ssl_async_inject_error_t; typedef struct { ssl_async_key_slot_t slots[4]; /* key, key2, sni1, sni2 */ size_t slots_used; ssl_async_inject_error_t inject_error; int (*f_rng)(void *, unsigned char *, size_t); void *p_rng; } ssl_async_key_context_t; int ssl_async_set_key( ssl_async_key_context_t *ctx, mbedtls_x509_crt *cert, mbedtls_pk_context *pk, int pk_take_ownership, unsigned delay ) { if( ctx->slots_used >= sizeof( ctx->slots ) / sizeof( *ctx->slots ) ) return( -1 ); ctx->slots[ctx->slots_used].cert = cert; ctx->slots[ctx->slots_used].pk = pk; ctx->slots[ctx->slots_used].delay = delay; ctx->slots[ctx->slots_used].pk_owned = pk_take_ownership; ++ctx->slots_used; return( 0 ); } #define SSL_ASYNC_INPUT_MAX_SIZE 512 typedef enum { ASYNC_OP_SIGN, ASYNC_OP_DECRYPT, } ssl_async_operation_type_t; /* Note that the enum above and the array below need to be kept in sync! * `ssl_async_operation_names[op]` is the name of op for each value `op` * of type `ssl_async_operation_type_t`. */ static const char *const ssl_async_operation_names[] = { "sign", "decrypt", }; typedef struct { unsigned slot; ssl_async_operation_type_t operation_type; mbedtls_md_type_t md_alg; unsigned char input[SSL_ASYNC_INPUT_MAX_SIZE]; size_t input_len; unsigned remaining_delay; } ssl_async_operation_context_t; static int ssl_async_start( mbedtls_ssl_context *ssl, mbedtls_x509_crt *cert, ssl_async_operation_type_t op_type, mbedtls_md_type_t md_alg, const unsigned char *input, size_t input_len ) { ssl_async_key_context_t *config_data = mbedtls_ssl_conf_get_async_config_data( ssl->conf ); unsigned slot; ssl_async_operation_context_t *ctx = NULL; const char *op_name = ssl_async_operation_names[op_type]; { char dn[100]; if( mbedtls_x509_dn_gets( dn, sizeof( dn ), &cert->subject ) > 0 ) mbedtls_printf( "Async %s callback: looking for DN=%s\n", op_name, dn ); } /* Look for a private key that matches the public key in cert. * Since this test code has the private key inside Mbed TLS, * we call mbedtls_pk_check_pair to match a private key with the * public key. */ for( slot = 0; slot < config_data->slots_used; slot++ ) { if( mbedtls_pk_check_pair( &cert->pk, config_data->slots[slot].pk ) == 0 ) break; } if( slot == config_data->slots_used ) { mbedtls_printf( "Async %s callback: no key matches this certificate.\n", op_name ); return( MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH ); } mbedtls_printf( "Async %s callback: using key slot %u, delay=%u.\n", op_name, slot, config_data->slots[slot].delay ); if( config_data->inject_error == SSL_ASYNC_INJECT_ERROR_START ) { mbedtls_printf( "Async %s callback: injected error\n", op_name ); return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); } if( input_len > SSL_ASYNC_INPUT_MAX_SIZE ) return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA ); ctx = mbedtls_calloc( 1, sizeof( *ctx ) ); if( ctx == NULL ) return( MBEDTLS_ERR_SSL_ALLOC_FAILED ); ctx->slot = slot; ctx->operation_type = op_type; ctx->md_alg = md_alg; memcpy( ctx->input, input, input_len ); ctx->input_len = input_len; ctx->remaining_delay = config_data->slots[slot].delay; mbedtls_ssl_set_async_operation_data( ssl, ctx ); if( ctx->remaining_delay == 0 ) return( 0 ); else return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS ); } static int ssl_async_sign( mbedtls_ssl_context *ssl, mbedtls_x509_crt *cert, mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hash_len ) { return( ssl_async_start( ssl, cert, ASYNC_OP_SIGN, md_alg, hash, hash_len ) ); } static int ssl_async_decrypt( mbedtls_ssl_context *ssl, mbedtls_x509_crt *cert, const unsigned char *input, size_t input_len ) { return( ssl_async_start( ssl, cert, ASYNC_OP_DECRYPT, MBEDTLS_MD_NONE, input, input_len ) ); } static int ssl_async_resume( mbedtls_ssl_context *ssl, unsigned char *output, size_t *output_len, size_t output_size ) { ssl_async_operation_context_t *ctx = mbedtls_ssl_get_async_operation_data( ssl ); ssl_async_key_context_t *config_data = mbedtls_ssl_conf_get_async_config_data( ssl->conf ); ssl_async_key_slot_t *key_slot = &config_data->slots[ctx->slot]; int ret; const char *op_name; if( ctx->remaining_delay > 0 ) { --ctx->remaining_delay; mbedtls_printf( "Async resume (slot %u): call %u more times.\n", ctx->slot, ctx->remaining_delay ); return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS ); } switch( ctx->operation_type ) { case ASYNC_OP_DECRYPT: ret = mbedtls_pk_decrypt( key_slot->pk, ctx->input, ctx->input_len, output, output_len, output_size, config_data->f_rng, config_data->p_rng ); break; case ASYNC_OP_SIGN: ret = mbedtls_pk_sign( key_slot->pk, ctx->md_alg, ctx->input, ctx->input_len, output, output_len, config_data->f_rng, config_data->p_rng ); break; default: mbedtls_printf( "Async resume (slot %u): unknown operation type %ld. This shouldn't happen.\n", ctx->slot, (long) ctx->operation_type ); mbedtls_free( ctx ); return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); break; } op_name = ssl_async_operation_names[ctx->operation_type]; if( config_data->inject_error == SSL_ASYNC_INJECT_ERROR_RESUME ) { mbedtls_printf( "Async resume callback: %s done but injected error\n", op_name ); mbedtls_free( ctx ); return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE ); } mbedtls_printf( "Async resume (slot %u): %s done, status=%d.\n", ctx->slot, op_name, ret ); mbedtls_free( ctx ); return( ret ); } static void ssl_async_cancel( mbedtls_ssl_context *ssl ) { ssl_async_operation_context_t *ctx = mbedtls_ssl_get_async_operation_data( ssl ); mbedtls_printf( "Async cancel callback.\n" ); mbedtls_free( ctx ); } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ /* * Wait for an event from the underlying transport or the timer * (Used in event-driven IO mode). */ #if !defined(MBEDTLS_TIMING_C) int idle( mbedtls_net_context *fd, int idle_reason ) #else int idle( mbedtls_net_context *fd, mbedtls_timing_delay_context *timer, int idle_reason ) #endif { int ret; int poll_type = 0; if( idle_reason == MBEDTLS_ERR_SSL_WANT_WRITE ) poll_type = MBEDTLS_NET_POLL_WRITE; else if( idle_reason == MBEDTLS_ERR_SSL_WANT_READ ) poll_type = MBEDTLS_NET_POLL_READ; #if !defined(MBEDTLS_TIMING_C) else return( 0 ); #endif while( 1 ) { /* Check if timer has expired */ #if defined(MBEDTLS_TIMING_C) if( timer != NULL && mbedtls_timing_get_delay( timer ) == 2 ) { break; } #endif /* MBEDTLS_TIMING_C */ /* Check if underlying transport became available */ if( poll_type != 0 ) { ret = mbedtls_net_poll( fd, poll_type, 0 ); if( ret < 0 ) return( ret ); if( ret == poll_type ) break; } } return( 0 ); } #if defined(MBEDTLS_USE_PSA_CRYPTO) static psa_status_t psa_setup_psk_key_slot( psa_key_handle_t *slot, psa_algorithm_t alg, unsigned char *psk, size_t psk_len ) { psa_status_t status; psa_key_attributes_t key_attributes; key_attributes = psa_key_attributes_init(); psa_set_key_usage_flags( &key_attributes, PSA_KEY_USAGE_DERIVE ); psa_set_key_algorithm( &key_attributes, alg ); psa_set_key_type( &key_attributes, PSA_KEY_TYPE_DERIVE ); status = psa_import_key( &key_attributes, psk, psk_len, slot ); if( status != PSA_SUCCESS ) { fprintf( stderr, "IMPORT\n" ); return( status ); } return( PSA_SUCCESS ); } #endif /* MBEDTLS_USE_PSA_CRYPTO */ #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) int report_cid_usage( mbedtls_ssl_context *ssl, const char *additional_description ) { int ret; unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ]; size_t peer_cid_len; int cid_negotiated; if( opt.transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM ) return( 0 ); /* Check if the use of a CID has been negotiated */ ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated, peer_cid, &peer_cid_len ); if( ret != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n", (unsigned int) -ret ); return( ret ); } if( cid_negotiated == MBEDTLS_SSL_CID_DISABLED ) { if( opt.cid_enabled == MBEDTLS_SSL_CID_ENABLED ) { mbedtls_printf( "(%s) Use of Connection ID was not offered by client.\n", additional_description ); } } else { size_t idx=0; mbedtls_printf( "(%s) Use of Connection ID has been negotiated.\n", additional_description ); mbedtls_printf( "(%s) Peer CID (length %u Bytes): ", additional_description, (unsigned) peer_cid_len ); while( idx < peer_cid_len ) { mbedtls_printf( "%02x ", peer_cid[ idx ] ); idx++; } mbedtls_printf( "\n" ); } return( 0 ); } #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ int main( int argc, char *argv[] ) { int ret = 0, len, written, frags, exchanges_left; int version_suites[4][2]; io_ctx_t io_ctx; unsigned char* buf = 0; #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) #if defined(MBEDTLS_USE_PSA_CRYPTO) psa_algorithm_t alg = 0; psa_key_handle_t psk_slot = 0; #endif /* MBEDTLS_USE_PSA_CRYPTO */ unsigned char psk[MBEDTLS_PSK_MAX_LEN]; size_t psk_len = 0; psk_entry *psk_info = NULL; #endif const char *pers = "ssl_server2"; unsigned char client_ip[16] = { 0 }; size_t cliip_len; #if defined(MBEDTLS_SSL_COOKIE_C) mbedtls_ssl_cookie_ctx cookie_ctx; #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) mbedtls_x509_crt_profile crt_profile_for_test = mbedtls_x509_crt_profile_default; #endif mbedtls_entropy_context entropy; mbedtls_ctr_drbg_context ctr_drbg; mbedtls_ssl_context ssl; mbedtls_ssl_config conf; #if defined(MBEDTLS_TIMING_C) mbedtls_timing_delay_context timer; #endif #if defined(MBEDTLS_SSL_RENEGOTIATION) unsigned char renego_period[8] = { 0 }; #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) uint32_t flags; mbedtls_x509_crt cacert; mbedtls_x509_crt srvcert; mbedtls_pk_context pkey; mbedtls_x509_crt srvcert2; mbedtls_pk_context pkey2; int key_cert_init = 0, key_cert_init2 = 0; #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) ssl_async_key_context_t ssl_async_keys; #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ #endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_context dhm; #endif #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_context cache; #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) mbedtls_ssl_ticket_context ticket_ctx; #endif #if defined(SNI_OPTION) sni_entry *sni_info = NULL; #endif #if defined(MBEDTLS_ECP_C) mbedtls_ecp_group_id curve_list[CURVE_LIST_SIZE]; const mbedtls_ecp_curve_info * curve_cur; #endif #if defined(MBEDTLS_SSL_ALPN) const char *alpn_list[ALPN_LIST_SIZE]; #endif #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) unsigned char alloc_buf[MEMORY_HEAP_SIZE]; #endif #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) unsigned char cid[MBEDTLS_SSL_CID_IN_LEN_MAX]; unsigned char cid_renego[MBEDTLS_SSL_CID_IN_LEN_MAX]; size_t cid_len = 0; size_t cid_renego_len = 0; #endif #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) unsigned char *context_buf = NULL; size_t context_buf_len = 0; #endif int i; char *p, *q; const int *list; #if defined(MBEDTLS_USE_PSA_CRYPTO) psa_status_t status; #endif #if defined(MBEDTLS_SSL_EXPORT_KEYS) unsigned char eap_tls_keymaterial[16]; unsigned char eap_tls_iv[8]; const char* eap_tls_label = "client EAP encryption"; eap_tls_keys eap_tls_keying; #endif #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) ); #if defined(MBEDTLS_MEMORY_DEBUG) size_t current_heap_memory, peak_heap_memory, heap_blocks; #endif /* MBEDTLS_MEMORY_DEBUG */ #endif /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */ /* * Make sure memory references are valid in case we exit early. */ mbedtls_net_init( &client_fd ); mbedtls_net_init( &listen_fd ); mbedtls_ssl_init( &ssl ); mbedtls_ssl_config_init( &conf ); mbedtls_ctr_drbg_init( &ctr_drbg ); #if defined(MBEDTLS_X509_CRT_PARSE_C) mbedtls_x509_crt_init( &cacert ); mbedtls_x509_crt_init( &srvcert ); mbedtls_pk_init( &pkey ); mbedtls_x509_crt_init( &srvcert2 ); mbedtls_pk_init( &pkey2 ); #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) memset( &ssl_async_keys, 0, sizeof( ssl_async_keys ) ); #endif #endif #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_init( &dhm ); #endif #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_init( &cache ); #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) mbedtls_ssl_ticket_init( &ticket_ctx ); #endif #if defined(MBEDTLS_SSL_ALPN) memset( (void *) alpn_list, 0, sizeof( alpn_list ) ); #endif #if defined(MBEDTLS_SSL_COOKIE_C) mbedtls_ssl_cookie_init( &cookie_ctx ); #endif #if defined(MBEDTLS_USE_PSA_CRYPTO) status = psa_crypto_init(); if( status != PSA_SUCCESS ) { mbedtls_fprintf( stderr, "Failed to initialize PSA Crypto implementation: %d\n", (int) status ); ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED; goto exit; } #endif #if !defined(_WIN32) /* Abort cleanly on SIGTERM and SIGINT */ signal( SIGTERM, term_handler ); signal( SIGINT, term_handler ); #endif if( argc == 0 ) { usage: if( ret == 0 ) ret = 1; mbedtls_printf( USAGE1 ); mbedtls_printf( USAGE2 ); mbedtls_printf( USAGE3 ); mbedtls_printf( USAGE4 ); list = mbedtls_ssl_list_ciphersuites(); while( *list ) { mbedtls_printf(" %-42s", mbedtls_ssl_get_ciphersuite_name( *list ) ); list++; if( !*list ) break; mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) ); list++; } mbedtls_printf("\n"); goto exit; } opt.buffer_size = DFL_IO_BUF_LEN; opt.server_addr = DFL_SERVER_ADDR; opt.server_port = DFL_SERVER_PORT; opt.debug_level = DFL_DEBUG_LEVEL; opt.event = DFL_EVENT; opt.response_size = DFL_RESPONSE_SIZE; opt.nbio = DFL_NBIO; opt.cid_enabled = DFL_CID_ENABLED; opt.cid_enabled_renego = DFL_CID_ENABLED_RENEGO; opt.cid_val = DFL_CID_VALUE; opt.cid_val_renego = DFL_CID_VALUE_RENEGO; opt.read_timeout = DFL_READ_TIMEOUT; opt.ca_file = DFL_CA_FILE; opt.ca_path = DFL_CA_PATH; opt.crt_file = DFL_CRT_FILE; opt.key_file = DFL_KEY_FILE; opt.crt_file2 = DFL_CRT_FILE2; opt.key_file2 = DFL_KEY_FILE2; opt.async_operations = DFL_ASYNC_OPERATIONS; opt.async_private_delay1 = DFL_ASYNC_PRIVATE_DELAY1; opt.async_private_delay2 = DFL_ASYNC_PRIVATE_DELAY2; opt.async_private_error = DFL_ASYNC_PRIVATE_ERROR; opt.psk = DFL_PSK; #if defined(MBEDTLS_USE_PSA_CRYPTO) opt.psk_opaque = DFL_PSK_OPAQUE; opt.psk_list_opaque = DFL_PSK_LIST_OPAQUE; #endif #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) opt.ca_callback = DFL_CA_CALLBACK; #endif opt.psk_identity = DFL_PSK_IDENTITY; opt.psk_list = DFL_PSK_LIST; opt.ecjpake_pw = DFL_ECJPAKE_PW; opt.force_ciphersuite[0]= DFL_FORCE_CIPHER; opt.version_suites = DFL_VERSION_SUITES; opt.renegotiation = DFL_RENEGOTIATION; opt.allow_legacy = DFL_ALLOW_LEGACY; opt.renegotiate = DFL_RENEGOTIATE; opt.renego_delay = DFL_RENEGO_DELAY; opt.renego_period = DFL_RENEGO_PERIOD; opt.exchanges = DFL_EXCHANGES; opt.min_version = DFL_MIN_VERSION; opt.max_version = DFL_MAX_VERSION; opt.arc4 = DFL_ARC4; opt.allow_sha1 = DFL_SHA1; opt.auth_mode = DFL_AUTH_MODE; opt.cert_req_ca_list = DFL_CERT_REQ_CA_LIST; opt.mfl_code = DFL_MFL_CODE; opt.trunc_hmac = DFL_TRUNC_HMAC; opt.tickets = DFL_TICKETS; opt.ticket_timeout = DFL_TICKET_TIMEOUT; opt.cache_max = DFL_CACHE_MAX; opt.cache_timeout = DFL_CACHE_TIMEOUT; opt.sni = DFL_SNI; opt.alpn_string = DFL_ALPN_STRING; opt.curves = DFL_CURVES; opt.dhm_file = DFL_DHM_FILE; opt.transport = DFL_TRANSPORT; opt.cookies = DFL_COOKIES; opt.anti_replay = DFL_ANTI_REPLAY; opt.hs_to_min = DFL_HS_TO_MIN; opt.hs_to_max = DFL_HS_TO_MAX; opt.dtls_mtu = DFL_DTLS_MTU; opt.dgram_packing = DFL_DGRAM_PACKING; opt.badmac_limit = DFL_BADMAC_LIMIT; opt.extended_ms = DFL_EXTENDED_MS; opt.etm = DFL_ETM; opt.serialize = DFL_SERIALIZE; opt.context_file = DFL_CONTEXT_FILE; opt.eap_tls = DFL_EAP_TLS; opt.reproducible = DFL_REPRODUCIBLE; opt.nss_keylog = DFL_NSS_KEYLOG; opt.nss_keylog_file = DFL_NSS_KEYLOG_FILE; for( i = 1; i < argc; i++ ) { p = argv[i]; if( ( q = strchr( p, '=' ) ) == NULL ) goto usage; *q++ = '\0'; if( strcmp( p, "server_port" ) == 0 ) opt.server_port = q; else if( strcmp( p, "server_addr" ) == 0 ) opt.server_addr = q; else if( strcmp( p, "dtls" ) == 0 ) { int t = atoi( q ); if( t == 0 ) opt.transport = MBEDTLS_SSL_TRANSPORT_STREAM; else if( t == 1 ) opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; else goto usage; } else if( strcmp( p, "debug_level" ) == 0 ) { opt.debug_level = atoi( q ); if( opt.debug_level < 0 || opt.debug_level > 65535 ) goto usage; } else if( strcmp( p, "nbio" ) == 0 ) { opt.nbio = atoi( q ); if( opt.nbio < 0 || opt.nbio > 2 ) goto usage; } else if( strcmp( p, "event" ) == 0 ) { opt.event = atoi( q ); if( opt.event < 0 || opt.event > 2 ) goto usage; } else if( strcmp( p, "read_timeout" ) == 0 ) opt.read_timeout = atoi( q ); else if( strcmp( p, "buffer_size" ) == 0 ) { opt.buffer_size = atoi( q ); if( opt.buffer_size < 1 || opt.buffer_size > MBEDTLS_SSL_MAX_CONTENT_LEN + 1 ) goto usage; } else if( strcmp( p, "response_size" ) == 0 ) { opt.response_size = atoi( q ); if( opt.response_size < 0 || opt.response_size > MBEDTLS_SSL_MAX_CONTENT_LEN ) goto usage; if( opt.buffer_size < opt.response_size ) opt.buffer_size = opt.response_size; } else if( strcmp( p, "ca_file" ) == 0 ) opt.ca_file = q; else if( strcmp( p, "ca_path" ) == 0 ) opt.ca_path = q; else if( strcmp( p, "crt_file" ) == 0 ) opt.crt_file = q; else if( strcmp( p, "key_file" ) == 0 ) opt.key_file = q; else if( strcmp( p, "crt_file2" ) == 0 ) opt.crt_file2 = q; else if( strcmp( p, "key_file2" ) == 0 ) opt.key_file2 = q; else if( strcmp( p, "dhm_file" ) == 0 ) opt.dhm_file = q; #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) else if( strcmp( p, "async_operations" ) == 0 ) opt.async_operations = q; else if( strcmp( p, "async_private_delay1" ) == 0 ) opt.async_private_delay1 = atoi( q ); else if( strcmp( p, "async_private_delay2" ) == 0 ) opt.async_private_delay2 = atoi( q ); else if( strcmp( p, "async_private_error" ) == 0 ) { int n = atoi( q ); if( n < -SSL_ASYNC_INJECT_ERROR_MAX || n > SSL_ASYNC_INJECT_ERROR_MAX ) { ret = 2; goto usage; } opt.async_private_error = n; } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) else if( strcmp( p, "cid" ) == 0 ) { opt.cid_enabled = atoi( q ); if( opt.cid_enabled != 0 && opt.cid_enabled != 1 ) goto usage; } else if( strcmp( p, "cid_renego" ) == 0 ) { opt.cid_enabled_renego = atoi( q ); if( opt.cid_enabled_renego != 0 && opt.cid_enabled_renego != 1 ) goto usage; } else if( strcmp( p, "cid_val" ) == 0 ) { opt.cid_val = q; } else if( strcmp( p, "cid_val_renego" ) == 0 ) { opt.cid_val_renego = q; } #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ else if( strcmp( p, "psk" ) == 0 ) opt.psk = q; #if defined(MBEDTLS_USE_PSA_CRYPTO) else if( strcmp( p, "psk_opaque" ) == 0 ) opt.psk_opaque = atoi( q ); else if( strcmp( p, "psk_list_opaque" ) == 0 ) opt.psk_list_opaque = atoi( q ); #endif #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) else if( strcmp( p, "ca_callback" ) == 0) opt.ca_callback = atoi( q ); #endif else if( strcmp( p, "psk_identity" ) == 0 ) opt.psk_identity = q; else if( strcmp( p, "psk_list" ) == 0 ) opt.psk_list = q; else if( strcmp( p, "ecjpake_pw" ) == 0 ) opt.ecjpake_pw = q; else if( strcmp( p, "force_ciphersuite" ) == 0 ) { opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q ); if( opt.force_ciphersuite[0] == 0 ) { ret = 2; goto usage; } opt.force_ciphersuite[1] = 0; } else if( strcmp( p, "curves" ) == 0 ) opt.curves = q; else if( strcmp( p, "version_suites" ) == 0 ) opt.version_suites = q; else if( strcmp( p, "renegotiation" ) == 0 ) { opt.renegotiation = (atoi( q )) ? MBEDTLS_SSL_RENEGOTIATION_ENABLED : MBEDTLS_SSL_RENEGOTIATION_DISABLED; } else if( strcmp( p, "allow_legacy" ) == 0 ) { switch( atoi( q ) ) { case -1: opt.allow_legacy = MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE; break; case 0: opt.allow_legacy = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION; break; case 1: opt.allow_legacy = MBEDTLS_SSL_LEGACY_ALLOW_RENEGOTIATION; break; default: goto usage; } } else if( strcmp( p, "renegotiate" ) == 0 ) { opt.renegotiate = atoi( q ); if( opt.renegotiate < 0 || opt.renegotiate > 1 ) goto usage; } else if( strcmp( p, "renego_delay" ) == 0 ) { opt.renego_delay = atoi( q ); } else if( strcmp( p, "renego_period" ) == 0 ) { #if defined(_MSC_VER) opt.renego_period = _strtoui64( q, NULL, 10 ); #else if( sscanf( q, "%" SCNu64, &opt.renego_period ) != 1 ) goto usage; #endif /* _MSC_VER */ if( opt.renego_period < 2 ) goto usage; } else if( strcmp( p, "exchanges" ) == 0 ) { opt.exchanges = atoi( q ); if( opt.exchanges < 0 ) goto usage; } else if( strcmp( p, "min_version" ) == 0 ) { if( strcmp( q, "ssl3" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0; else if( strcmp( q, "tls1" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1; else if( strcmp( q, "tls1_1" ) == 0 || strcmp( q, "dtls1" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; else if( strcmp( q, "tls1_2" ) == 0 || strcmp( q, "dtls1_2" ) == 0 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3; else goto usage; } else if( strcmp( p, "max_version" ) == 0 ) { if( strcmp( q, "ssl3" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0; else if( strcmp( q, "tls1" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1; else if( strcmp( q, "tls1_1" ) == 0 || strcmp( q, "dtls1" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2; else if( strcmp( q, "tls1_2" ) == 0 || strcmp( q, "dtls1_2" ) == 0 ) opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3; else goto usage; } else if( strcmp( p, "arc4" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.arc4 = MBEDTLS_SSL_ARC4_DISABLED; break; case 1: opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED; break; default: goto usage; } } else if( strcmp( p, "allow_sha1" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.allow_sha1 = 0; break; case 1: opt.allow_sha1 = 1; break; default: goto usage; } } else if( strcmp( p, "force_version" ) == 0 ) { if( strcmp( q, "ssl3" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0; } else if( strcmp( q, "tls1" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1; } else if( strcmp( q, "tls1_1" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2; } else if( strcmp( q, "tls1_2" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3; } else if( strcmp( q, "dtls1" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2; opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; } else if( strcmp( q, "dtls1_2" ) == 0 ) { opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3; opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3; opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM; } else goto usage; } else if( strcmp( p, "auth_mode" ) == 0 ) { if( ( opt.auth_mode = get_auth_mode( q ) ) < 0 ) goto usage; } else if( strcmp( p, "cert_req_ca_list" ) == 0 ) { opt.cert_req_ca_list = atoi( q ); if( opt.cert_req_ca_list < 0 || opt.cert_req_ca_list > 1 ) goto usage; } else if( strcmp( p, "max_frag_len" ) == 0 ) { if( strcmp( q, "512" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_512; else if( strcmp( q, "1024" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_1024; else if( strcmp( q, "2048" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_2048; else if( strcmp( q, "4096" ) == 0 ) opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_4096; else goto usage; } else if( strcmp( p, "alpn" ) == 0 ) { opt.alpn_string = q; } else if( strcmp( p, "trunc_hmac" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_DISABLED; break; case 1: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED; break; default: goto usage; } } else if( strcmp( p, "extended_ms" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_DISABLED; break; case 1: opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED; break; default: goto usage; } } else if( strcmp( p, "etm" ) == 0 ) { switch( atoi( q ) ) { case 0: opt.etm = MBEDTLS_SSL_ETM_DISABLED; break; case 1: opt.etm = MBEDTLS_SSL_ETM_ENABLED; break; default: goto usage; } } else if( strcmp( p, "tickets" ) == 0 ) { opt.tickets = atoi( q ); if( opt.tickets < 0 || opt.tickets > 1 ) goto usage; } else if( strcmp( p, "ticket_timeout" ) == 0 ) { opt.ticket_timeout = atoi( q ); if( opt.ticket_timeout < 0 ) goto usage; } else if( strcmp( p, "cache_max" ) == 0 ) { opt.cache_max = atoi( q ); if( opt.cache_max < 0 ) goto usage; } else if( strcmp( p, "cache_timeout" ) == 0 ) { opt.cache_timeout = atoi( q ); if( opt.cache_timeout < 0 ) goto usage; } else if( strcmp( p, "cookies" ) == 0 ) { opt.cookies = atoi( q ); if( opt.cookies < -1 || opt.cookies > 1) goto usage; } else if( strcmp( p, "anti_replay" ) == 0 ) { opt.anti_replay = atoi( q ); if( opt.anti_replay < 0 || opt.anti_replay > 1) goto usage; } else if( strcmp( p, "badmac_limit" ) == 0 ) { opt.badmac_limit = atoi( q ); if( opt.badmac_limit < 0 ) goto usage; } else if( strcmp( p, "hs_timeout" ) == 0 ) { if( ( p = strchr( q, '-' ) ) == NULL ) goto usage; *p++ = '\0'; opt.hs_to_min = atoi( q ); opt.hs_to_max = atoi( p ); if( opt.hs_to_min == 0 || opt.hs_to_max < opt.hs_to_min ) goto usage; } else if( strcmp( p, "mtu" ) == 0 ) { opt.dtls_mtu = atoi( q ); if( opt.dtls_mtu < 0 ) goto usage; } else if( strcmp( p, "dgram_packing" ) == 0 ) { opt.dgram_packing = atoi( q ); if( opt.dgram_packing != 0 && opt.dgram_packing != 1 ) { goto usage; } } else if( strcmp( p, "sni" ) == 0 ) { opt.sni = q; } else if( strcmp( p, "query_config" ) == 0 ) { mbedtls_exit( query_config( q ) ); } else if( strcmp( p, "serialize") == 0 ) { opt.serialize = atoi( q ); if( opt.serialize < 0 || opt.serialize > 2) goto usage; } else if( strcmp( p, "context_file") == 0 ) { opt.context_file = q; } else if( strcmp( p, "eap_tls" ) == 0 ) { opt.eap_tls = atoi( q ); if( opt.eap_tls < 0 || opt.eap_tls > 1 ) goto usage; } else if( strcmp( p, "reproducible" ) == 0 ) { opt.reproducible = 1; } else if( strcmp( p, "nss_keylog" ) == 0 ) { opt.nss_keylog = atoi( q ); if( opt.nss_keylog < 0 || opt.nss_keylog > 1 ) goto usage; } else if( strcmp( p, "nss_keylog_file" ) == 0 ) { opt.nss_keylog_file = q; } else goto usage; } if( opt.nss_keylog != 0 && opt.eap_tls != 0 ) { mbedtls_printf( "Error: eap_tls and nss_keylog options cannot be used together.\n" ); goto usage; } /* Event-driven IO is incompatible with the above custom * receive and send functions, as the polling builds on * refers to the underlying net_context. */ if( opt.event == 1 && opt.nbio != 1 ) { mbedtls_printf( "Warning: event-driven IO mandates nbio=1 - overwrite\n" ); opt.nbio = 1; } #if defined(MBEDTLS_DEBUG_C) mbedtls_debug_set_threshold( opt.debug_level ); #endif buf = mbedtls_calloc( 1, opt.buffer_size + 1 ); if( buf == NULL ) { mbedtls_printf( "Could not allocate %u bytes\n", opt.buffer_size ); ret = 3; goto exit; } #if defined(MBEDTLS_USE_PSA_CRYPTO) if( opt.psk_opaque != 0 ) { if( strlen( opt.psk ) == 0 ) { mbedtls_printf( "psk_opaque set but no psk to be imported specified.\n" ); ret = 2; goto usage; } if( opt.force_ciphersuite[0] <= 0 ) { mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" ); ret = 2; goto usage; } } if( opt.psk_list_opaque != 0 ) { if( opt.psk_list == NULL ) { mbedtls_printf( "psk_slot set but no psk to be imported specified.\n" ); ret = 2; goto usage; } if( opt.force_ciphersuite[0] <= 0 ) { mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" ); ret = 2; goto usage; } } #endif /* MBEDTLS_USE_PSA_CRYPTO */ if( opt.force_ciphersuite[0] > 0 ) { const mbedtls_ssl_ciphersuite_t *ciphersuite_info; ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( opt.force_ciphersuite[0] ); if( opt.max_version != -1 && ciphersuite_info->min_minor_ver > opt.max_version ) { mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" ); ret = 2; goto usage; } if( opt.min_version != -1 && ciphersuite_info->max_minor_ver < opt.min_version ) { mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" ); ret = 2; goto usage; } /* If we select a version that's not supported by * this suite, then there will be no common ciphersuite... */ if( opt.max_version == -1 || opt.max_version > ciphersuite_info->max_minor_ver ) { opt.max_version = ciphersuite_info->max_minor_ver; } if( opt.min_version < ciphersuite_info->min_minor_ver ) { opt.min_version = ciphersuite_info->min_minor_ver; /* DTLS starts with TLS 1.1 */ if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM && opt.min_version < MBEDTLS_SSL_MINOR_VERSION_2 ) opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2; } /* Enable RC4 if needed and not explicitly disabled */ if( ciphersuite_info->cipher == MBEDTLS_CIPHER_ARC4_128 ) { if( opt.arc4 == MBEDTLS_SSL_ARC4_DISABLED ) { mbedtls_printf("forced RC4 ciphersuite with RC4 disabled\n"); ret = 2; goto usage; } opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED; } #if defined(MBEDTLS_USE_PSA_CRYPTO) if( opt.psk_opaque != 0 || opt.psk_list_opaque != 0 ) { /* Ensure that the chosen ciphersuite is PSK-only; we must know * the ciphersuite in advance to set the correct policy for the * PSK key slot. This limitation might go away in the future. */ if( ciphersuite_info->key_exchange != MBEDTLS_KEY_EXCHANGE_PSK || opt.min_version != MBEDTLS_SSL_MINOR_VERSION_3 ) { mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" ); ret = 2; goto usage; } /* Determine KDF algorithm the opaque PSK will be used in. */ #if defined(MBEDTLS_SHA512_C) if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 ) alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384); else #endif /* MBEDTLS_SHA512_C */ alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256); } #endif /* MBEDTLS_USE_PSA_CRYPTO */ } if( opt.version_suites != NULL ) { const char *name[4] = { 0 }; /* Parse 4-element coma-separated list */ for( i = 0, p = (char *) opt.version_suites; i < 4 && *p != '\0'; i++ ) { name[i] = p; /* Terminate the current string and move on to next one */ while( *p != ',' && *p != '\0' ) p++; if( *p == ',' ) *p++ = '\0'; } if( i != 4 ) { mbedtls_printf( "too few values for version_suites\n" ); ret = 1; goto exit; } memset( version_suites, 0, sizeof( version_suites ) ); /* Get the suites identifiers from their name */ for( i = 0; i < 4; i++ ) { version_suites[i][0] = mbedtls_ssl_get_ciphersuite_id( name[i] ); if( version_suites[i][0] == 0 ) { mbedtls_printf( "unknown ciphersuite: '%s'\n", name[i] ); ret = 2; goto usage; } } } #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) if( unhexify( cid, opt.cid_val, &cid_len ) != 0 ) { mbedtls_printf( "CID not valid hex\n" ); goto exit; } /* Keep CID settings for renegotiation unless * specified otherwise. */ if( opt.cid_enabled_renego == DFL_CID_ENABLED_RENEGO ) opt.cid_enabled_renego = opt.cid_enabled; if( opt.cid_val_renego == DFL_CID_VALUE_RENEGO ) opt.cid_val_renego = opt.cid_val; if( unhexify( cid_renego, opt.cid_val_renego, &cid_renego_len ) != 0 ) { mbedtls_printf( "CID not valid hex\n" ); goto exit; } #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) /* * Unhexify the pre-shared key and parse the list if any given */ if( unhexify( psk, opt.psk, &psk_len ) != 0 ) { mbedtls_printf( "pre-shared key not valid hex\n" ); goto exit; } if( opt.psk_list != NULL ) { if( ( psk_info = psk_parse( opt.psk_list ) ) == NULL ) { mbedtls_printf( "psk_list invalid" ); goto exit; } } #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */ #if defined(MBEDTLS_ECP_C) if( opt.curves != NULL ) { p = (char *) opt.curves; i = 0; if( strcmp( p, "none" ) == 0 ) { curve_list[0] = MBEDTLS_ECP_DP_NONE; } else if( strcmp( p, "default" ) != 0 ) { /* Leave room for a final NULL in curve list */ while( i < CURVE_LIST_SIZE - 1 && *p != '\0' ) { q = p; /* Terminate the current string */ while( *p != ',' && *p != '\0' ) p++; if( *p == ',' ) *p++ = '\0'; if( ( curve_cur = mbedtls_ecp_curve_info_from_name( q ) ) != NULL ) { curve_list[i++] = curve_cur->grp_id; } else { mbedtls_printf( "unknown curve %s\n", q ); mbedtls_printf( "supported curves: " ); for( curve_cur = mbedtls_ecp_curve_list(); curve_cur->grp_id != MBEDTLS_ECP_DP_NONE; curve_cur++ ) { mbedtls_printf( "%s ", curve_cur->name ); } mbedtls_printf( "\n" ); goto exit; } } mbedtls_printf("Number of curves: %d\n", i ); if( i == CURVE_LIST_SIZE - 1 && *p != '\0' ) { mbedtls_printf( "curves list too long, maximum %d", CURVE_LIST_SIZE - 1 ); goto exit; } curve_list[i] = MBEDTLS_ECP_DP_NONE; } } #endif /* MBEDTLS_ECP_C */ #if defined(MBEDTLS_SSL_ALPN) if( opt.alpn_string != NULL ) { p = (char *) opt.alpn_string; i = 0; /* Leave room for a final NULL in alpn_list */ while( i < ALPN_LIST_SIZE - 1 && *p != '\0' ) { alpn_list[i++] = p; /* Terminate the current string and move on to next one */ while( *p != ',' && *p != '\0' ) p++; if( *p == ',' ) *p++ = '\0'; } } #endif /* MBEDTLS_SSL_ALPN */ /* * 0. Initialize the RNG and the session data */ mbedtls_printf( "\n . Seeding the random number generator..." ); fflush( stdout ); mbedtls_entropy_init( &entropy ); if (opt.reproducible) { srand( 1 ); if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, dummy_entropy, &entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%x\n", (unsigned int) -ret ); goto exit; } } else { if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy, (const unsigned char *) pers, strlen( pers ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%x\n", (unsigned int) -ret ); goto exit; } } mbedtls_printf( " ok\n" ); #if defined(MBEDTLS_X509_CRT_PARSE_C) /* * 1.1. Load the trusted CA */ mbedtls_printf( " . Loading the CA root certificate ..." ); fflush( stdout ); if( strcmp( opt.ca_path, "none" ) == 0 || strcmp( opt.ca_file, "none" ) == 0 ) { ret = 0; } else #if defined(MBEDTLS_FS_IO) if( strlen( opt.ca_path ) ) ret = mbedtls_x509_crt_parse_path( &cacert, opt.ca_path ); else if( strlen( opt.ca_file ) ) ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file ); else #endif #if defined(MBEDTLS_CERTS_C) { #if defined(MBEDTLS_PEM_PARSE_C) for( i = 0; mbedtls_test_cas[i] != NULL; i++ ) { ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas[i], mbedtls_test_cas_len[i] ); if( ret != 0 ) break; } if( ret == 0 ) #endif /* MBEDTLS_PEM_PARSE_C */ for( i = 0; mbedtls_test_cas_der[i] != NULL; i++ ) { ret = mbedtls_x509_crt_parse_der( &cacert, (const unsigned char *) mbedtls_test_cas_der[i], mbedtls_test_cas_der_len[i] ); if( ret != 0 ) break; } } #else { ret = 1; mbedtls_printf( "MBEDTLS_CERTS_C not defined." ); } #endif /* MBEDTLS_CERTS_C */ if( ret < 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_printf( " ok (%d skipped)\n", ret ); /* * 1.2. Load own certificate and private key */ mbedtls_printf( " . Loading the server cert. and key..." ); fflush( stdout ); #if defined(MBEDTLS_FS_IO) if( strlen( opt.crt_file ) && strcmp( opt.crt_file, "none" ) != 0 ) { key_cert_init++; if( ( ret = mbedtls_x509_crt_parse_file( &srvcert, opt.crt_file ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse_file returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } } if( strlen( opt.key_file ) && strcmp( opt.key_file, "none" ) != 0 ) { key_cert_init++; if( ( ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file, "" ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } } if( key_cert_init == 1 ) { mbedtls_printf( " failed\n ! crt_file without key_file or vice-versa\n\n" ); goto exit; } if( strlen( opt.crt_file2 ) && strcmp( opt.crt_file2, "none" ) != 0 ) { key_cert_init2++; if( ( ret = mbedtls_x509_crt_parse_file( &srvcert2, opt.crt_file2 ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse_file(2) returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } } if( strlen( opt.key_file2 ) && strcmp( opt.key_file2, "none" ) != 0 ) { key_cert_init2++; if( ( ret = mbedtls_pk_parse_keyfile( &pkey2, opt.key_file2, "" ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile(2) returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } } if( key_cert_init2 == 1 ) { mbedtls_printf( " failed\n ! crt_file2 without key_file2 or vice-versa\n\n" ); goto exit; } #endif if( key_cert_init == 0 && strcmp( opt.crt_file, "none" ) != 0 && strcmp( opt.key_file, "none" ) != 0 && key_cert_init2 == 0 && strcmp( opt.crt_file2, "none" ) != 0 && strcmp( opt.key_file2, "none" ) != 0 ) { #if !defined(MBEDTLS_CERTS_C) mbedtls_printf( "Not certificated or key provided, and \nMBEDTLS_CERTS_C not defined!\n" ); goto exit; #else #if defined(MBEDTLS_RSA_C) if( ( ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt_rsa, mbedtls_test_srv_crt_rsa_len ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } if( ( ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key_rsa, mbedtls_test_srv_key_rsa_len, NULL, 0 ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_pk_parse_key returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } key_cert_init = 2; #endif /* MBEDTLS_RSA_C */ #if defined(MBEDTLS_ECDSA_C) if( ( ret = mbedtls_x509_crt_parse( &srvcert2, (const unsigned char *) mbedtls_test_srv_crt_ec, mbedtls_test_srv_crt_ec_len ) ) != 0 ) { mbedtls_printf( " failed\n ! x509_crt_parse2 returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } if( ( ret = mbedtls_pk_parse_key( &pkey2, (const unsigned char *) mbedtls_test_srv_key_ec, mbedtls_test_srv_key_ec_len, NULL, 0 ) ) != 0 ) { mbedtls_printf( " failed\n ! pk_parse_key2 returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } key_cert_init2 = 2; #endif /* MBEDTLS_ECDSA_C */ #endif /* MBEDTLS_CERTS_C */ } mbedtls_printf( " ok\n" ); #endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) if( opt.dhm_file != NULL ) { mbedtls_printf( " . Loading DHM parameters..." ); fflush( stdout ); if( ( ret = mbedtls_dhm_parse_dhmfile( &dhm, opt.dhm_file ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_dhm_parse_dhmfile returned -0x%04X\n\n", (unsigned int) -ret ); goto exit; } mbedtls_printf( " ok\n" ); } #endif #if defined(SNI_OPTION) if( opt.sni != NULL ) { mbedtls_printf( " . Setting up SNI information..." ); fflush( stdout ); if( ( sni_info = sni_parse( opt.sni ) ) == NULL ) { mbedtls_printf( " failed\n" ); goto exit; } mbedtls_printf( " ok\n" ); } #endif /* SNI_OPTION */ /* * 2. Setup the listening TCP socket */ mbedtls_printf( " . Bind on %s://%s:%s/ ...", opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? "tcp" : "udp", opt.server_addr ? opt.server_addr : "*", opt.server_port ); fflush( stdout ); if( ( ret = mbedtls_net_bind( &listen_fd, opt.server_addr, opt.server_port, opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_net_bind returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_printf( " ok\n" ); /* * 3. Setup stuff */ mbedtls_printf( " . Setting up the SSL/TLS structure..." ); fflush( stdout ); if( ( ret = mbedtls_ssl_config_defaults( &conf, MBEDTLS_SSL_IS_SERVER, opt.transport, MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } #if defined(MBEDTLS_X509_CRT_PARSE_C) /* The default algorithms profile disables SHA-1, but our tests still rely on it heavily. Hence we allow it here. A real-world server should use the default profile unless there is a good reason not to. */ if( opt.allow_sha1 > 0 ) { crt_profile_for_test.allowed_mds |= MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 ); mbedtls_ssl_conf_cert_profile( &conf, &crt_profile_for_test ); mbedtls_ssl_conf_sig_hashes( &conf, ssl_sig_hashes_for_test ); } #endif /* MBEDTLS_X509_CRT_PARSE_C */ if( opt.auth_mode != DFL_AUTH_MODE ) mbedtls_ssl_conf_authmode( &conf, opt.auth_mode ); if( opt.cert_req_ca_list != DFL_CERT_REQ_CA_LIST ) mbedtls_ssl_conf_cert_req_ca_list( &conf, opt.cert_req_ca_list ); #if defined(MBEDTLS_SSL_PROTO_DTLS) if( opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX ) mbedtls_ssl_conf_handshake_timeout( &conf, opt.hs_to_min, opt.hs_to_max ); if( opt.dgram_packing != DFL_DGRAM_PACKING ) mbedtls_ssl_set_datagram_packing( &ssl, opt.dgram_packing ); #endif /* MBEDTLS_SSL_PROTO_DTLS */ #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) if( ( ret = mbedtls_ssl_conf_max_frag_len( &conf, opt.mfl_code ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_max_frag_len returned %d\n\n", ret ); goto exit; }; #endif #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) if( opt.cid_enabled == 1 || opt.cid_enabled_renego == 1 ) { if( opt.cid_enabled == 1 && opt.cid_enabled_renego == 1 && cid_len != cid_renego_len ) { mbedtls_printf( "CID length must not change during renegotiation\n" ); goto usage; } if( opt.cid_enabled == 1 ) ret = mbedtls_ssl_conf_cid( &conf, cid_len, MBEDTLS_SSL_UNEXPECTED_CID_IGNORE ); else ret = mbedtls_ssl_conf_cid( &conf, cid_renego_len, MBEDTLS_SSL_UNEXPECTED_CID_IGNORE ); if( ret != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_cid_len returned -%#04x\n\n", (unsigned int) -ret ); goto exit; } } #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) if( opt.trunc_hmac != DFL_TRUNC_HMAC ) mbedtls_ssl_conf_truncated_hmac( &conf, opt.trunc_hmac ); #endif #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) if( opt.extended_ms != DFL_EXTENDED_MS ) mbedtls_ssl_conf_extended_master_secret( &conf, opt.extended_ms ); #endif #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC) if( opt.etm != DFL_ETM ) mbedtls_ssl_conf_encrypt_then_mac( &conf, opt.etm ); #endif #if defined(MBEDTLS_SSL_EXPORT_KEYS) if( opt.eap_tls != 0 ) { mbedtls_ssl_conf_export_keys_ext_cb( &conf, eap_tls_key_derivation, &eap_tls_keying ); } else if( opt.nss_keylog != 0 ) { mbedtls_ssl_conf_export_keys_ext_cb( &conf, nss_keylog_export, NULL ); } #endif #if defined(MBEDTLS_SSL_ALPN) if( opt.alpn_string != NULL ) if( ( ret = mbedtls_ssl_conf_alpn_protocols( &conf, alpn_list ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_alpn_protocols returned %d\n\n", ret ); goto exit; } #endif if (opt.reproducible) { #if defined(MBEDTLS_HAVE_TIME) #if defined(MBEDTLS_PLATFORM_TIME_ALT) mbedtls_platform_set_time( dummy_constant_time ); #else fprintf( stderr, "Warning: reproducible option used without constant time\n" ); #endif #endif } mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg ); mbedtls_ssl_conf_dbg( &conf, my_debug, stdout ); #if defined(MBEDTLS_SSL_CACHE_C) if( opt.cache_max != -1 ) mbedtls_ssl_cache_set_max_entries( &cache, opt.cache_max ); if( opt.cache_timeout != -1 ) mbedtls_ssl_cache_set_timeout( &cache, opt.cache_timeout ); mbedtls_ssl_conf_session_cache( &conf, &cache, mbedtls_ssl_cache_get, mbedtls_ssl_cache_set ); #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) if( opt.tickets == MBEDTLS_SSL_SESSION_TICKETS_ENABLED ) { if( ( ret = mbedtls_ssl_ticket_setup( &ticket_ctx, mbedtls_ctr_drbg_random, &ctr_drbg, MBEDTLS_CIPHER_AES_256_GCM, opt.ticket_timeout ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_ticket_setup returned %d\n\n", ret ); goto exit; } mbedtls_ssl_conf_session_tickets_cb( &conf, mbedtls_ssl_ticket_write, mbedtls_ssl_ticket_parse, &ticket_ctx ); } #endif #if defined(MBEDTLS_SSL_PROTO_DTLS) if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { #if defined(MBEDTLS_SSL_COOKIE_C) if( opt.cookies > 0 ) { if( ( ret = mbedtls_ssl_cookie_setup( &cookie_ctx, mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_cookie_setup returned %d\n\n", ret ); goto exit; } mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check, &cookie_ctx ); } else #endif /* MBEDTLS_SSL_COOKIE_C */ #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) if( opt.cookies == 0 ) { mbedtls_ssl_conf_dtls_cookies( &conf, NULL, NULL, NULL ); } else #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */ { ; /* Nothing to do */ } #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY) if( opt.anti_replay != DFL_ANTI_REPLAY ) mbedtls_ssl_conf_dtls_anti_replay( &conf, opt.anti_replay ); #endif #if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT) if( opt.badmac_limit != DFL_BADMAC_LIMIT ) mbedtls_ssl_conf_dtls_badmac_limit( &conf, opt.badmac_limit ); #endif } #endif /* MBEDTLS_SSL_PROTO_DTLS */ if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER ) mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite ); #if defined(MBEDTLS_ARC4_C) if( opt.arc4 != DFL_ARC4 ) mbedtls_ssl_conf_arc4_support( &conf, opt.arc4 ); #endif if( opt.version_suites != NULL ) { mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[0], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_0 ); mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[1], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_1 ); mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[2], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_2 ); mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[3], MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3 ); } if( opt.allow_legacy != DFL_ALLOW_LEGACY ) mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy ); #if defined(MBEDTLS_SSL_RENEGOTIATION) mbedtls_ssl_conf_renegotiation( &conf, opt.renegotiation ); if( opt.renego_delay != DFL_RENEGO_DELAY ) mbedtls_ssl_conf_renegotiation_enforced( &conf, opt.renego_delay ); if( opt.renego_period != DFL_RENEGO_PERIOD ) { PUT_UINT64_BE( renego_period, opt.renego_period, 0 ); mbedtls_ssl_conf_renegotiation_period( &conf, renego_period ); } #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) if( strcmp( opt.ca_path, "none" ) != 0 && strcmp( opt.ca_file, "none" ) != 0 ) { #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK) if( opt.ca_callback != 0 ) mbedtls_ssl_conf_ca_cb( &conf, ca_callback, &cacert); else #endif mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL ); } if( key_cert_init ) { mbedtls_pk_context *pk = &pkey; #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) if( opt.async_private_delay1 >= 0 ) { ret = ssl_async_set_key( &ssl_async_keys, &srvcert, pk, 0, opt.async_private_delay1 ); if( ret < 0 ) { mbedtls_printf( " Test error: ssl_async_set_key failed (%d)\n", ret ); goto exit; } pk = NULL; } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, pk ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); goto exit; } } if( key_cert_init2 ) { mbedtls_pk_context *pk = &pkey2; #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) if( opt.async_private_delay2 >= 0 ) { ret = ssl_async_set_key( &ssl_async_keys, &srvcert2, pk, 0, opt.async_private_delay2 ); if( ret < 0 ) { mbedtls_printf( " Test error: ssl_async_set_key failed (%d)\n", ret ); goto exit; } pk = NULL; } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert2, pk ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret ); goto exit; } } #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) if( opt.async_operations[0] != '-' ) { mbedtls_ssl_async_sign_t *sign = NULL; mbedtls_ssl_async_decrypt_t *decrypt = NULL; const char *r; for( r = opt.async_operations; *r; r++ ) { switch( *r ) { case 'd': decrypt = ssl_async_decrypt; break; case 's': sign = ssl_async_sign; break; } } ssl_async_keys.inject_error = ( opt.async_private_error < 0 ? - opt.async_private_error : opt.async_private_error ); ssl_async_keys.f_rng = mbedtls_ctr_drbg_random; ssl_async_keys.p_rng = &ctr_drbg; mbedtls_ssl_conf_async_private_cb( &conf, sign, decrypt, ssl_async_resume, ssl_async_cancel, &ssl_async_keys ); } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ #endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(SNI_OPTION) if( opt.sni != NULL ) { mbedtls_ssl_conf_sni( &conf, sni_callback, sni_info ); #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) if( opt.async_private_delay2 >= 0 ) { sni_entry *cur; for( cur = sni_info; cur != NULL; cur = cur->next ) { ret = ssl_async_set_key( &ssl_async_keys, cur->cert, cur->key, 1, opt.async_private_delay2 ); if( ret < 0 ) { mbedtls_printf( " Test error: ssl_async_set_key failed (%d)\n", ret ); goto exit; } cur->key = NULL; } } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ } #endif #if defined(MBEDTLS_ECP_C) if( opt.curves != NULL && strcmp( opt.curves, "default" ) != 0 ) { mbedtls_ssl_conf_curves( &conf, curve_list ); } #endif #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) if( strlen( opt.psk ) != 0 && strlen( opt.psk_identity ) != 0 ) { #if defined(MBEDTLS_USE_PSA_CRYPTO) if( opt.psk_opaque != 0 ) { /* The algorithm has already been determined earlier. */ status = psa_setup_psk_key_slot( &psk_slot, alg, psk, psk_len ); if( status != PSA_SUCCESS ) { fprintf( stderr, "SETUP FAIL\n" ); ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED; goto exit; } if( ( ret = mbedtls_ssl_conf_psk_opaque( &conf, psk_slot, (const unsigned char *) opt.psk_identity, strlen( opt.psk_identity ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_conf_psk_opaque returned %d\n\n", ret ); goto exit; } } else #endif /* MBEDTLS_USE_PSA_CRYPTO */ if( psk_len > 0 ) { ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len, (const unsigned char *) opt.psk_identity, strlen( opt.psk_identity ) ); if( ret != 0 ) { mbedtls_printf( " failed\n mbedtls_ssl_conf_psk returned -0x%04X\n\n", (unsigned int) -ret ); goto exit; } } } if( opt.psk_list != NULL ) { #if defined(MBEDTLS_USE_PSA_CRYPTO) if( opt.psk_list_opaque != 0 ) { psk_entry *cur_psk; for( cur_psk = psk_info; cur_psk != NULL; cur_psk = cur_psk->next ) { status = psa_setup_psk_key_slot( &cur_psk->slot, alg, cur_psk->key, cur_psk->key_len ); if( status != PSA_SUCCESS ) { ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED; goto exit; } } } #endif /* MBEDTLS_USE_PSA_CRYPTO */ mbedtls_ssl_conf_psk_cb( &conf, psk_callback, psk_info ); } #endif #if defined(MBEDTLS_DHM_C) /* * Use different group than default DHM group */ #if defined(MBEDTLS_FS_IO) if( opt.dhm_file != NULL ) ret = mbedtls_ssl_conf_dh_param_ctx( &conf, &dhm ); #endif if( ret != 0 ) { mbedtls_printf( " failed\n mbedtls_ssl_conf_dh_param returned -0x%04X\n\n", (unsigned int) -ret ); goto exit; } #endif if( opt.min_version != DFL_MIN_VERSION ) mbedtls_ssl_conf_min_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3, opt.min_version ); if( opt.max_version != DFL_MIN_VERSION ) mbedtls_ssl_conf_max_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3, opt.max_version ); if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } io_ctx.ssl = &ssl; io_ctx.net = &client_fd; mbedtls_ssl_set_bio( &ssl, &io_ctx, send_cb, recv_cb, opt.nbio == 0 ? recv_timeout_cb : NULL ); #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { if( ( ret = mbedtls_ssl_set_cid( &ssl, opt.cid_enabled, cid, cid_len ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_set_cid returned %d\n\n", ret ); goto exit; } } #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ #if defined(MBEDTLS_SSL_PROTO_DTLS) if( opt.dtls_mtu != DFL_DTLS_MTU ) mbedtls_ssl_set_mtu( &ssl, opt.dtls_mtu ); #endif #if defined(MBEDTLS_TIMING_C) mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay, mbedtls_timing_get_delay ); #endif mbedtls_printf( " ok\n" ); reset: #if !defined(_WIN32) if( received_sigterm ) { mbedtls_printf( " interrupted by SIGTERM (not in net_accept())\n" ); if( ret == MBEDTLS_ERR_NET_INVALID_CONTEXT ) ret = 0; goto exit; } #endif if( ret == MBEDTLS_ERR_SSL_CLIENT_RECONNECT ) { mbedtls_printf( " ! Client initiated reconnection from same port\n" ); goto handshake; } #ifdef MBEDTLS_ERROR_C if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf ); } #endif mbedtls_net_free( &client_fd ); mbedtls_ssl_session_reset( &ssl ); /* * 3. Wait until a client connects */ mbedtls_printf( " . Waiting for a remote connection ..." ); fflush( stdout ); if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd, client_ip, sizeof( client_ip ), &cliip_len ) ) != 0 ) { #if !defined(_WIN32) if( received_sigterm ) { mbedtls_printf( " interrupted by SIGTERM (in net_accept())\n" ); if( ret == MBEDTLS_ERR_NET_ACCEPT_FAILED ) ret = 0; goto exit; } #endif mbedtls_printf( " failed\n ! mbedtls_net_accept returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } if( opt.nbio > 0 ) ret = mbedtls_net_set_nonblock( &client_fd ); else ret = mbedtls_net_set_block( &client_fd ); if( ret != 0 ) { mbedtls_printf( " failed\n ! net_set_(non)block() returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_ssl_conf_read_timeout( &conf, opt.read_timeout ); #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY) if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { if( ( ret = mbedtls_ssl_set_client_transport_id( &ssl, client_ip, cliip_len ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } } #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */ #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) if( opt.ecjpake_pw != DFL_ECJPAKE_PW ) { if( ( ret = mbedtls_ssl_set_hs_ecjpake_password( &ssl, (const unsigned char *) opt.ecjpake_pw, strlen( opt.ecjpake_pw ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_set_hs_ecjpake_password returned %d\n\n", ret ); goto exit; } } #endif mbedtls_printf( " ok\n" ); /* * 4. Handshake */ handshake: mbedtls_printf( " . Performing the SSL/TLS handshake..." ); fflush( stdout ); while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 ) { #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) if( ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS && ssl_async_keys.inject_error == SSL_ASYNC_INJECT_ERROR_CANCEL ) { mbedtls_printf( " cancelling on injected error\n" ); break; } #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */ if( ! mbedtls_status_is_ssl_in_progress( ret ) ) break; /* For event-driven IO, wait for socket to become available */ if( opt.event == 1 /* level triggered IO */ ) { #if defined(MBEDTLS_TIMING_C) ret = idle( &client_fd, &timer, ret ); #else ret = idle( &client_fd, ret ); #endif if( ret != 0 ) goto reset; } } if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED ) { mbedtls_printf( " hello verification requested\n" ); ret = 0; goto reset; } else if( ret != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret ); #if defined(MBEDTLS_X509_CRT_PARSE_C) if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED ) { char vrfy_buf[512]; flags = mbedtls_ssl_get_verify_result( &ssl ); mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags ); mbedtls_printf( "%s\n", vrfy_buf ); } #endif #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) if( opt.async_private_error < 0 ) /* Injected error only the first time round, to test reset */ ssl_async_keys.inject_error = SSL_ASYNC_INJECT_ERROR_NONE; #endif goto reset; } else /* ret == 0 */ { mbedtls_printf( " ok\n [ Protocol is %s ]\n [ Ciphersuite is %s ]\n", mbedtls_ssl_get_version( &ssl ), mbedtls_ssl_get_ciphersuite( &ssl ) ); } if( ( ret = mbedtls_ssl_get_record_expansion( &ssl ) ) >= 0 ) mbedtls_printf( " [ Record expansion is %d ]\n", ret ); else mbedtls_printf( " [ Record expansion is unknown (compression) ]\n" ); #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH) mbedtls_printf( " [ Maximum input fragment length is %u ]\n", (unsigned int) mbedtls_ssl_get_input_max_frag_len( &ssl ) ); mbedtls_printf( " [ Maximum output fragment length is %u ]\n", (unsigned int) mbedtls_ssl_get_output_max_frag_len( &ssl ) ); #endif #if defined(MBEDTLS_SSL_ALPN) if( opt.alpn_string != NULL ) { const char *alp = mbedtls_ssl_get_alpn_protocol( &ssl ); mbedtls_printf( " [ Application Layer Protocol is %s ]\n", alp ? alp : "(none)" ); } #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) /* * 5. Verify the client certificate */ mbedtls_printf( " . Verifying peer X.509 certificate..." ); if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 ) { char vrfy_buf[512]; mbedtls_printf( " failed\n" ); mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), " ! ", flags ); mbedtls_printf( "%s\n", vrfy_buf ); } else mbedtls_printf( " ok\n" ); if( mbedtls_ssl_get_peer_cert( &ssl ) != NULL ) { char crt_buf[512]; mbedtls_printf( " . Peer certificate information ...\n" ); mbedtls_x509_crt_info( crt_buf, sizeof( crt_buf ), " ", mbedtls_ssl_get_peer_cert( &ssl ) ); mbedtls_printf( "%s\n", crt_buf ); } #endif /* MBEDTLS_X509_CRT_PARSE_C */ #if defined(MBEDTLS_SSL_EXPORT_KEYS) if( opt.eap_tls != 0 ) { size_t j = 0; if( ( ret = mbedtls_ssl_tls_prf( eap_tls_keying.tls_prf_type, eap_tls_keying.master_secret, sizeof( eap_tls_keying.master_secret ), eap_tls_label, eap_tls_keying.randbytes, sizeof( eap_tls_keying.randbytes ), eap_tls_keymaterial, sizeof( eap_tls_keymaterial ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_tls_prf returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_printf( " EAP-TLS key material is:" ); for( j = 0; j < sizeof( eap_tls_keymaterial ); j++ ) { if( j % 8 == 0 ) mbedtls_printf("\n "); mbedtls_printf("%02x ", eap_tls_keymaterial[j] ); } mbedtls_printf("\n"); if( ( ret = mbedtls_ssl_tls_prf( eap_tls_keying.tls_prf_type, NULL, 0, eap_tls_label, eap_tls_keying.randbytes, sizeof( eap_tls_keying.randbytes ), eap_tls_iv, sizeof( eap_tls_iv ) ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_tls_prf returned -0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_printf( " EAP-TLS IV is:" ); for( j = 0; j < sizeof( eap_tls_iv ); j++ ) { if( j % 8 == 0 ) mbedtls_printf("\n "); mbedtls_printf("%02x ", eap_tls_iv[j] ); } mbedtls_printf("\n"); } #endif #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) ret = report_cid_usage( &ssl, "initial handshake" ); if( ret != 0 ) goto exit; if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM ) { if( ( ret = mbedtls_ssl_set_cid( &ssl, opt.cid_enabled_renego, cid_renego, cid_renego_len ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_set_cid returned %d\n\n", ret ); goto exit; } } #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ #if defined(MBEDTLS_MEMORY_DEBUG) mbedtls_memory_buffer_alloc_cur_get( ¤t_heap_memory, &heap_blocks ); mbedtls_memory_buffer_alloc_max_get( &peak_heap_memory, &heap_blocks ); mbedtls_printf( "Heap memory usage after handshake: %lu bytes. Peak memory usage was %lu\n", (unsigned long) current_heap_memory, (unsigned long) peak_heap_memory ); #endif /* MBEDTLS_MEMORY_DEBUG */ if( opt.exchanges == 0 ) goto close_notify; exchanges_left = opt.exchanges; data_exchange: /* * 6. Read the HTTP Request */ mbedtls_printf( " < Read from client:" ); fflush( stdout ); /* * TLS and DTLS need different reading styles (stream vs datagram) */ if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ) { do { int terminated = 0; len = opt.buffer_size - 1; memset( buf, 0, opt.buffer_size ); ret = mbedtls_ssl_read( &ssl, buf, len ); if( mbedtls_status_is_ssl_in_progress( ret ) ) { if( opt.event == 1 /* level triggered IO */ ) { #if defined(MBEDTLS_TIMING_C) idle( &client_fd, &timer, ret ); #else idle( &client_fd, ret ); #endif } continue; } if( ret <= 0 ) { switch( ret ) { case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY: mbedtls_printf( " connection was closed gracefully\n" ); goto close_notify; case 0: case MBEDTLS_ERR_NET_CONN_RESET: mbedtls_printf( " connection was reset by peer\n" ); ret = MBEDTLS_ERR_NET_CONN_RESET; goto reset; default: mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret ); goto reset; } } if( mbedtls_ssl_get_bytes_avail( &ssl ) == 0 ) { len = ret; buf[len] = '\0'; mbedtls_printf( " %d bytes read\n\n%s\n", len, (char *) buf ); /* End of message should be detected according to the syntax of the * application protocol (eg HTTP), just use a dummy test here. */ if( buf[len - 1] == '\n' ) terminated = 1; } else { int extra_len, ori_len; unsigned char *larger_buf; ori_len = ret; extra_len = (int) mbedtls_ssl_get_bytes_avail( &ssl ); larger_buf = mbedtls_calloc( 1, ori_len + extra_len + 1 ); if( larger_buf == NULL ) { mbedtls_printf( " ! memory allocation failed\n" ); ret = 1; goto reset; } memset( larger_buf, 0, ori_len + extra_len ); memcpy( larger_buf, buf, ori_len ); /* This read should never fail and get the whole cached data */ ret = mbedtls_ssl_read( &ssl, larger_buf + ori_len, extra_len ); if( ret != extra_len || mbedtls_ssl_get_bytes_avail( &ssl ) != 0 ) { mbedtls_printf( " ! mbedtls_ssl_read failed on cached data\n" ); ret = 1; goto reset; } larger_buf[ori_len + extra_len] = '\0'; mbedtls_printf( " %d bytes read (%d + %d)\n\n%s\n", ori_len + extra_len, ori_len, extra_len, (char *) larger_buf ); /* End of message should be detected according to the syntax of the * application protocol (eg HTTP), just use a dummy test here. */ if( larger_buf[ori_len + extra_len - 1] == '\n' ) terminated = 1; mbedtls_free( larger_buf ); } if( terminated ) { ret = 0; break; } } while( 1 ); } else /* Not stream, so datagram */ { len = opt.buffer_size - 1; memset( buf, 0, opt.buffer_size ); do { /* Without the call to `mbedtls_ssl_check_pending`, it might * happen that the client sends application data in the same * datagram as the Finished message concluding the handshake. * In this case, the application data would be ready to be * processed while the underlying transport wouldn't signal * any further incoming data. * * See the test 'Event-driven I/O: session-id resume, UDP packing' * in tests/ssl-opt.sh. */ /* For event-driven IO, wait for socket to become available */ if( mbedtls_ssl_check_pending( &ssl ) == 0 && opt.event == 1 /* level triggered IO */ ) { #if defined(MBEDTLS_TIMING_C) idle( &client_fd, &timer, MBEDTLS_ERR_SSL_WANT_READ ); #else idle( &client_fd, MBEDTLS_ERR_SSL_WANT_READ ); #endif } ret = mbedtls_ssl_read( &ssl, buf, len ); /* Note that even if `mbedtls_ssl_check_pending` returns true, * it can happen that the subsequent call to `mbedtls_ssl_read` * returns `MBEDTLS_ERR_SSL_WANT_READ`, because the pending messages * might be discarded (e.g. because they are retransmissions). */ } while( mbedtls_status_is_ssl_in_progress( ret ) ); if( ret <= 0 ) { switch( ret ) { case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY: mbedtls_printf( " connection was closed gracefully\n" ); ret = 0; goto close_notify; default: mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret ); goto reset; } } len = ret; buf[len] = '\0'; mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf ); ret = 0; } /* * 7a. Request renegotiation while client is waiting for input from us. * (only on the first exchange, to be able to test retransmission) */ #if defined(MBEDTLS_SSL_RENEGOTIATION) if( opt.renegotiate && exchanges_left == opt.exchanges ) { mbedtls_printf( " . Requestion renegotiation..." ); fflush( stdout ); while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 ) { if( ! mbedtls_status_is_ssl_in_progress( ret ) ) { mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n", ret ); goto reset; } /* For event-driven IO, wait for socket to become available */ if( opt.event == 1 /* level triggered IO */ ) { #if defined(MBEDTLS_TIMING_C) idle( &client_fd, &timer, ret ); #else idle( &client_fd, ret ); #endif } } mbedtls_printf( " ok\n" ); } #endif /* MBEDTLS_SSL_RENEGOTIATION */ #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) ret = report_cid_usage( &ssl, "after renegotiation" ); if( ret != 0 ) goto exit; #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */ /* * 7. Write the 200 Response */ mbedtls_printf( " > Write to client:" ); fflush( stdout ); len = sprintf( (char *) buf, HTTP_RESPONSE, mbedtls_ssl_get_ciphersuite( &ssl ) ); /* Add padding to the response to reach opt.response_size in length */ if( opt.response_size != DFL_RESPONSE_SIZE && len < opt.response_size ) { memset( buf + len, 'B', opt.response_size - len ); len += opt.response_size - len; } /* Truncate if response size is smaller than the "natural" size */ if( opt.response_size != DFL_RESPONSE_SIZE && len > opt.response_size ) { len = opt.response_size; /* Still end with \r\n unless that's really not possible */ if( len >= 2 ) buf[len - 2] = '\r'; if( len >= 1 ) buf[len - 1] = '\n'; } if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ) { for( written = 0, frags = 0; written < len; written += ret, frags++ ) { while( ( ret = mbedtls_ssl_write( &ssl, buf + written, len - written ) ) <= 0 ) { if( ret == MBEDTLS_ERR_NET_CONN_RESET ) { mbedtls_printf( " failed\n ! peer closed the connection\n\n" ); goto reset; } if( ! mbedtls_status_is_ssl_in_progress( ret ) ) { mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret ); goto reset; } /* For event-driven IO, wait for socket to become available */ if( opt.event == 1 /* level triggered IO */ ) { #if defined(MBEDTLS_TIMING_C) idle( &client_fd, &timer, ret ); #else idle( &client_fd, ret ); #endif } } } } else /* Not stream, so datagram */ { while( 1 ) { ret = mbedtls_ssl_write( &ssl, buf, len ); if( ! mbedtls_status_is_ssl_in_progress( ret ) ) break; /* For event-driven IO, wait for socket to become available */ if( opt.event == 1 /* level triggered IO */ ) { #if defined(MBEDTLS_TIMING_C) idle( &client_fd, &timer, ret ); #else idle( &client_fd, ret ); #endif } } if( ret < 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret ); goto reset; } frags = 1; written = ret; } buf[written] = '\0'; mbedtls_printf( " %d bytes written in %d fragments\n\n%s\n", written, frags, (char *) buf ); ret = 0; /* * 7b. Simulate serialize/deserialize and go back to data exchange */ #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) if( opt.serialize != 0 ) { size_t buf_len; mbedtls_printf( " . Serializing live connection..." ); ret = mbedtls_ssl_context_save( &ssl, NULL, 0, &buf_len ); if( ret != MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL ) { mbedtls_printf( " failed\n ! mbedtls_ssl_context_save returned " "-0x%x\n\n", (unsigned int) -ret ); goto exit; } if( ( context_buf = mbedtls_calloc( 1, buf_len ) ) == NULL ) { mbedtls_printf( " failed\n ! Couldn't allocate buffer for " "serialized context" ); goto exit; } context_buf_len = buf_len; if( ( ret = mbedtls_ssl_context_save( &ssl, context_buf, buf_len, &buf_len ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_context_save returned " "-0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_printf( " ok\n" ); /* Save serialized context to the 'opt.context_file' as a base64 code */ if( 0 < strlen( opt.context_file ) ) { FILE *b64_file; uint8_t *b64_buf; size_t b64_len; mbedtls_printf( " . Save serialized context to a file... " ); mbedtls_base64_encode( NULL, 0, &b64_len, context_buf, buf_len ); if( ( b64_buf = mbedtls_calloc( 1, b64_len ) ) == NULL ) { mbedtls_printf( "failed\n ! Couldn't allocate buffer for " "the base64 code\n" ); goto exit; } if( ( ret = mbedtls_base64_encode( b64_buf, b64_len, &b64_len, context_buf, buf_len ) ) != 0 ) { mbedtls_printf( "failed\n ! mbedtls_base64_encode returned " "-0x%x\n", (unsigned int) -ret ); mbedtls_free( b64_buf ); goto exit; } if( ( b64_file = fopen( opt.context_file, "w" ) ) == NULL ) { mbedtls_printf( "failed\n ! Cannot open '%s' for writing.\n", opt.context_file ); mbedtls_free( b64_buf ); goto exit; } if( b64_len != fwrite( b64_buf, 1, b64_len, b64_file ) ) { mbedtls_printf( "failed\n ! fwrite(%ld bytes) failed\n", (long) b64_len ); mbedtls_free( b64_buf ); fclose( b64_file ); goto exit; } mbedtls_free( b64_buf ); fclose( b64_file ); mbedtls_printf( "ok\n" ); } /* * This simulates a workflow where you have a long-lived server * instance, potentially with a pool of ssl_context objects, and you * just want to re-use one while the connection is inactive: in that * case you can just reset() it, and then it's ready to receive * serialized data from another connection (or the same here). */ if( opt.serialize == 1 ) { /* nothing to do here, done by context_save() already */ mbedtls_printf( " . Context has been reset... ok\n" ); } /* * This simulates a workflow where you have one server instance per * connection, and want to release it entire when the connection is * inactive, and spawn it again when needed again - this would happen * between ssl_free() and ssl_init() below, together with any other * teardown/startup code needed - for example, preparing the * ssl_config again (see section 3 "setup stuff" in this file). */ if( opt.serialize == 2 ) { mbedtls_printf( " . Freeing and reinitializing context..." ); mbedtls_ssl_free( &ssl ); mbedtls_ssl_init( &ssl ); if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 ) { mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned " "-0x%x\n\n", (unsigned int) -ret ); goto exit; } /* * This illustrates the minimum amount of things you need to set * up, however you could set up much more if desired, for example * if you want to share your set up code between the case of * establishing a new connection and this case. */ if( opt.nbio == 2 ) mbedtls_ssl_set_bio( &ssl, &client_fd, delayed_send, delayed_recv, NULL ); else mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, opt.nbio == 0 ? mbedtls_net_recv_timeout : NULL ); #if defined(MBEDTLS_TIMING_C) mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay, mbedtls_timing_get_delay ); #endif /* MBEDTLS_TIMING_C */ mbedtls_printf( " ok\n" ); } mbedtls_printf( " . Deserializing connection..." ); if( ( ret = mbedtls_ssl_context_load( &ssl, context_buf, buf_len ) ) != 0 ) { mbedtls_printf( "failed\n ! mbedtls_ssl_context_load returned " "-0x%x\n\n", (unsigned int) -ret ); goto exit; } mbedtls_free( context_buf ); context_buf = NULL; context_buf_len = 0; mbedtls_printf( " ok\n" ); } #endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */ /* * 7c. Continue doing data exchanges? */ if( --exchanges_left > 0 ) goto data_exchange; /* * 8. Done, cleanly close the connection */ close_notify: mbedtls_printf( " . Closing the connection..." ); /* No error checking, the connection might be closed already */ do ret = mbedtls_ssl_close_notify( &ssl ); while( ret == MBEDTLS_ERR_SSL_WANT_WRITE ); ret = 0; mbedtls_printf( " done\n" ); goto reset; /* * Cleanup and exit */ exit: #ifdef MBEDTLS_ERROR_C if( ret != 0 ) { char error_buf[100]; mbedtls_strerror( ret, error_buf, 100 ); mbedtls_printf("Last error was: -0x%X - %s\n\n", (unsigned int) -ret, error_buf ); } #endif mbedtls_printf( " . Cleaning up..." ); fflush( stdout ); mbedtls_net_free( &client_fd ); mbedtls_net_free( &listen_fd ); #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_free( &dhm ); #endif #if defined(MBEDTLS_X509_CRT_PARSE_C) mbedtls_x509_crt_free( &cacert ); mbedtls_x509_crt_free( &srvcert ); mbedtls_pk_free( &pkey ); mbedtls_x509_crt_free( &srvcert2 ); mbedtls_pk_free( &pkey2 ); #endif #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) for( i = 0; (size_t) i < ssl_async_keys.slots_used; i++ ) { if( ssl_async_keys.slots[i].pk_owned ) { mbedtls_pk_free( ssl_async_keys.slots[i].pk ); mbedtls_free( ssl_async_keys.slots[i].pk ); ssl_async_keys.slots[i].pk = NULL; } } #endif #if defined(SNI_OPTION) sni_free( sni_info ); #endif #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) if( ( ret = psk_free( psk_info ) ) != 0 ) mbedtls_printf( "Failed to list of opaque PSKs - error was %d\n", ret ); #endif #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO) mbedtls_dhm_free( &dhm ); #endif #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) && \ defined(MBEDTLS_USE_PSA_CRYPTO) if( opt.psk_opaque != 0 ) { /* This is ok even if the slot hasn't been * initialized (we might have jumed here * immediately because of bad cmd line params, * for example). */ status = psa_destroy_key( psk_slot ); if( status != PSA_SUCCESS ) { mbedtls_printf( "Failed to destroy key slot %u - error was %d", (unsigned) psk_slot, (int) status ); } } #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED && MBEDTLS_USE_PSA_CRYPTO */ mbedtls_ssl_free( &ssl ); mbedtls_ssl_config_free( &conf ); mbedtls_ctr_drbg_free( &ctr_drbg ); mbedtls_entropy_free( &entropy ); #if defined(MBEDTLS_SSL_CACHE_C) mbedtls_ssl_cache_free( &cache ); #endif #if defined(MBEDTLS_SSL_SESSION_TICKETS) mbedtls_ssl_ticket_free( &ticket_ctx ); #endif #if defined(MBEDTLS_SSL_COOKIE_C) mbedtls_ssl_cookie_free( &cookie_ctx ); #endif mbedtls_free( buf ); #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION) if( context_buf != NULL ) mbedtls_platform_zeroize( context_buf, context_buf_len ); mbedtls_free( context_buf ); #endif #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C) #if defined(MBEDTLS_MEMORY_DEBUG) mbedtls_memory_buffer_alloc_status(); #endif mbedtls_memory_buffer_alloc_free(); #endif mbedtls_printf( " done.\n" ); #if defined(_WIN32) mbedtls_printf( " + Press Enter to exit this program.\n" ); fflush( stdout ); getchar(); #endif // Shell can not handle large exit numbers -> 1 for errors if( ret < 0 ) ret = 1; mbedtls_exit( ret ); } #endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C && MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C */