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Hanno Becker 4f84e20eb0 Don't invalidate MPS reader buffers upon commit call 
Previously, the semantics of mbedtls_mps_reader_commit() was to invalidate
all buffers previously fetched via mbedtls_mps_reader_get(), forbidding
any further use by the 'consumer'. This was in fact a necessary constraint
for the current implementation, which did some memory moving in
mbedtls_mps_reader_commit().

This commit simplifies the reader's semantics and implementation in
the following way:

- API: A call to mbedtls_mps_reader_commit() does no longer invalidate
       the buffers previously obtained via mbedtls_mps_reader_get().
       Instead, they can continue to be used until
       mbedtls_mps_reader_reclaim() is called.

       Calling mbedtls_mps_reader_commit() now only sets a marker
       indicating which parts of the data received through
       mbedtls_mps_reader_get() need not be backed up once
       mbedtls_mps_reader_reclaim() is called. Allowing the user
       to call mbedtls_mbedtls_reader_commit() multiple times
       before mbedtls_mps_reader_reclaim() is mere convenience:
       We'd get exactly the same functionality if instead of
       mbedtls_mps_reader_commit(), there was an additional argument
       to mbedtls_mps_reader_reclaim() indicating how much data
       to retain. However, the present design is more convenient
       for the user and doesn't appear to introduce any unnecessary
       complexity (anymore), so we stick with it for now.

- Implementation: mbedtls_mps_reader_commit() is now a 1-liner,
                  setting the 'commit-marker', but doing nothing else.

                  Instead, the complexity of mbedtls_mp_reader_reclaim()
                  slightly increases because it has to deal with creating
                  backups from both the accumulator and the current
                  fragment. In the previous implementation, which shifted
                  the accumulator content with every call to
                  mbedtls_mps_reader_commit(), only the backup from the
                  fragment was necessary; with the new implementation
                  which doesn't shift anything in
                  mbedtls_mps_reader_commit(), we need to do the
                  accumulator shift in mbedtls_mps_reader_reclaim().

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
2021-03-29 14:20:18 +01:00
..
.gitignore Split libs with make + general make cleanups 2015-06-25 10:59:56 +02:00
aes.c Merge pull request #3823 from gabor-mezei-arm/3818_MBEDTLS_AES_SETKEY_DEC_ALT_excludes_MBEDTLS_CIPHER_MODE_XTS 2020-11-09 20:44:08 +01:00
aesni.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
arc4.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
aria.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
asn1parse.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
asn1write.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
base64.c Code style fixups 2021-03-04 14:34:50 +00:00
bignum.c mbedtls_mpi_sub_abs: fix buffer overflow in error case 2021-02-01 17:28:03 +01:00
blowfish.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
camellia.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
ccm.c Fix additional data length field check for CCM 2020-10-08 12:09:44 +02:00
certs.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
chacha20.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
chachapoly.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
check_crypto_config.h psa: config: Add CAMELLIA to the list of possible CMAC ciphers 2021-03-25 14:25:46 +01:00
cipher.c Fix unused param warnings in auth_xxcrypt_ext() 2020-12-07 10:42:21 +01:00
cipher_wrap.c Do not set IV size for ECB mode ciphers 2020-11-06 09:40:21 +01:00
cmac.c Update comment to only apply to AES-192 2021-01-29 11:09:50 +01:00
CMakeLists.txt Rename MPS files library/mps/xxx.[ch] to library/mps_xxx.[ch] 2021-03-29 14:19:32 +01:00
common.h Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
ctr_drbg.c Document mutex invariant for CTR_DRBG 2021-02-22 19:24:03 +01:00
debug.c Declare mbedtls_debug_print_msg as printf-like 2021-03-10 17:00:32 +00:00
des.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
dhm.c Merge development into development-restricted 2020-08-20 11:07:12 +01:00
ecdh.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
ecdsa.c Fix unused argument when compiling with MBEDTLS_ECDSA_SIGN_ALT 2021-02-10 17:07:20 +01:00
ecjpake.c Skip tests requiring known entropy for ECJPAKE ALT implementations 2021-01-22 14:23:08 +01:00
ecp.c Remove unreferenced static functions when ECP_NO_FALLBACK is used 2021-03-02 10:14:24 +01:00
ecp_curves.c Fix uncaught error if fix_negative fails 2020-12-06 22:32:02 +01:00
entropy.c Make entropy double-free work 2021-02-23 11:27:03 +01:00
entropy_poll.c Merge pull request #4110 from gilles-peskine-arm/psa-external-random-in-mbedtls 2021-02-22 14:47:29 +00:00
error.c Simplify conditional guards in error.c 2020-11-16 15:02:16 +01:00
gcm.c Allow GCM selftest to skip non-12-byte IVs for ALT implementations 2021-02-10 15:34:52 +01:00
havege.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
hkdf.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
hmac_drbg.c Document mutex invariant for HMAC_DRBG 2021-02-22 19:24:03 +01:00
Makefile Rename MPS files library/mps/xxx.[ch] to library/mps_xxx.[ch] 2021-03-29 14:19:32 +01:00
md.c Fix wrong \file name in Doxygen comments 2021-02-23 20:29:38 +01:00
md2.c Merge branch 'development' into development-restricted 2020-12-03 09:59:42 +01:00
md4.c Merge branch 'development' into development-restricted 2020-12-03 09:59:42 +01:00
md5.c Merge branch 'development' into development-restricted 2020-12-03 09:59:42 +01:00
memory_buffer_alloc.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
mps_common.h Move MPS trace macros to MBEDTLS_MPS_ namespace 2021-03-29 14:19:32 +01:00
mps_error.h Move MPS reader to mbedtls_mps_ namespace 2021-03-29 14:19:32 +01:00
mps_reader.c Don't invalidate MPS reader buffers upon commit call 2021-03-29 14:20:18 +01:00
mps_reader.h Don't invalidate MPS reader buffers upon commit call 2021-03-29 14:20:18 +01:00
mps_trace.c Move MPS trace macros to MBEDTLS_MPS_ namespace 2021-03-29 14:19:32 +01:00
mps_trace.h Move MPS trace macros to MBEDTLS_MPS_ namespace 2021-03-29 14:19:32 +01:00
net_sockets.c Fix sloppy wording around stricly less-than vs less or equal 2021-03-01 11:39:21 +01:00
nist_kw.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
oid.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
padlock.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
pem.c Remove Extraneous bytes from buffer post pem write 2020-12-07 17:29:42 +00:00
pk.c psa: Move from key handle to key identifier 2020-11-10 16:00:41 +01:00
pk_wrap.c psa: Move from key handle to key identifier 2020-11-10 16:00:41 +01:00
pkcs5.c Merge pull request #731 from gabor-mezei-arm/692_missing_zeroizations_of_sensitive_data 2020-09-18 16:20:13 +02:00
pkcs11.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
pkcs12.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
pkparse.c fix return code 2020-09-22 11:57:16 +02:00
pkwrite.c adding parentheses to macro definitions, to avoid confusion and possible mistakes in usage. 2021-02-01 14:26:08 +01:00
platform.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
platform_util.c Fixes two _POSIX_C_SOURCE typos. 2020-11-13 09:20:18 +00:00
poly1305.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
psa_crypto.c psa: cipher: Remove cipher_generate_iv driver entry point 2021-03-26 15:58:25 +01:00
psa_crypto_cipher.c psa: cipher: Remove cipher_generate_iv driver entry point 2021-03-26 15:58:25 +01:00
psa_crypto_cipher.h psa: cipher: Remove cipher_generate_iv driver entry point 2021-03-26 15:58:25 +01:00
psa_crypto_client.c psa: Make sure MBEDTLS_PSA_CRYPTO_CLIENT is defined 2021-02-09 15:36:08 +01:00
psa_crypto_core.h Move mbedtls_cipher_info_from_psa to psa_crypto_cipher.c 2021-03-26 15:48:13 +01:00
psa_crypto_driver_wrappers.c psa: cipher: Remove cipher_generate_iv driver entry point 2021-03-26 15:58:25 +01:00
psa_crypto_driver_wrappers.h psa: cipher: Remove cipher_generate_iv driver entry point 2021-03-26 15:58:25 +01:00
psa_crypto_ecp.c Move mbedtls_md_info_from_psa into the mbedtls hash driver 2021-03-15 12:14:40 +01:00
psa_crypto_ecp.h psa: Rework ECDSA sign/verify support in the transparent test driver 2021-02-18 15:45:12 +01:00
psa_crypto_hash.c Simplify compilation guards around hash driver testing 2021-03-16 11:07:55 +01:00
psa_crypto_hash.h Move mbedtls_md_info_from_psa into the mbedtls hash driver 2021-03-15 12:14:40 +01:00
psa_crypto_invasive.h Rework MAC algorithm / key type validation 2021-03-03 19:58:02 +01:00
psa_crypto_its.h Update documentation 2020-11-25 13:10:50 +01:00
psa_crypto_random_impl.h Work around MSVC bug with duplicate static declarations 2021-02-16 18:55:05 +01:00
psa_crypto_rsa.c Move mbedtls_md_info_from_psa into the mbedtls hash driver 2021-03-15 12:14:40 +01:00
psa_crypto_rsa.h psa: Add RSA sign/verify hash support to the transparent test driver 2021-02-18 15:45:06 +01:00
psa_crypto_se.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
psa_crypto_se.h Update documentation 2020-11-25 13:10:50 +01:00
psa_crypto_service_integration.h Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
psa_crypto_slot_management.c Rename PSA_KEY_SLOT_COUNT to MBEDTLS_PSA_KEY_SLOT_COUNT 2021-02-15 14:26:44 +01:00
psa_crypto_slot_management.h Rename PSA_KEY_SLOT_COUNT to MBEDTLS_PSA_KEY_SLOT_COUNT 2021-02-15 14:26:44 +01:00
psa_crypto_storage.c Merge pull request #3872 from gabor-mezei-arm/3275_use_PSA_ERROR_DATA_INVALID_where_warranted 2021-02-03 20:54:46 +01:00
psa_crypto_storage.h Rename PSA_KEY_SLOT_COUNT to MBEDTLS_PSA_KEY_SLOT_COUNT 2021-02-15 14:26:44 +01:00
psa_its_file.c Correct fix for potential truncation 2021-03-10 17:00:32 +00:00
ripemd160.c Merge branch 'development' into development-restricted 2020-12-03 09:59:42 +01:00
rsa.c Fix mutex leak in RSA 2021-02-22 19:24:03 +01:00
rsa_internal.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
sha1.c Merge pull request #731 from gabor-mezei-arm/692_missing_zeroizations_of_sensitive_data 2020-09-18 16:20:13 +02:00
sha256.c Merge pull request #731 from gabor-mezei-arm/692_missing_zeroizations_of_sensitive_data 2020-09-18 16:20:13 +02:00
sha512.c Merge branch 'development' into development-restricted 2020-12-03 09:59:42 +01:00
ssl_cache.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
ssl_ciphersuites.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
ssl_cli.c Fix size_t and longlong specifiers for MinGW 2021-03-10 17:00:32 +00:00
ssl_cookie.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
ssl_invasive.h Merge pull request #736 from mpg/cf-varpos-copy-dev-restricted 2020-08-25 14:35:55 +01:00
ssl_msg.c Fix size_t and longlong specifiers for MinGW 2021-03-10 17:00:32 +00:00
ssl_srv.c Merge pull request #4098 from gstrauss/remove-redundant-condition 2021-03-27 22:47:13 +01:00
ssl_ticket.c Stop using deprecated functions in the library 2020-12-03 12:25:10 +01:00
ssl_tls.c Fix missed size_t printf 2021-03-10 18:17:12 +00:00
ssl_tls13_keys.c Comment on hardcoding of maximum HKDF key expansion of 255 Bytes 2020-09-16 09:50:17 +01:00
ssl_tls13_keys.h Comment on hardcoding of maximum HKDF key expansion of 255 Bytes 2020-09-16 09:50:17 +01:00
threading.c Explain the usage of is_valid in pthread mutexes 2021-02-22 19:24:03 +01:00
timing.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
version.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
version_features.c Add MBEDTLS_PSA_CRYPTO_CLIENT configuration option 2021-02-01 13:16:01 +01:00
x509.c x509.c: Remove one unnecessary cast 2020-09-01 11:04:53 +02:00
x509_create.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
x509_crl.c Merge development into development-restricted 2020-08-20 11:07:12 +01:00
x509_crt.c Fix memsan build with clang 11 2021-03-05 14:24:03 +00:00
x509_csr.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
x509write_crt.c Mark basic constraints critical as appropriate. 2020-09-21 18:25:35 -07:00
x509write_csr.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00
xtea.c Update copyright notices to use Linux Foundation guidance 2020-08-19 10:35:41 +02:00