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Gilles Peskine 9265ff4ee6 Bleichenbacher fix: don't leak the plaintext length (step 1) 
mbedtls_rsa_rsaes_pkcs1_v15_decrypt takes care not to reveal whether
the padding is valid or not, even through timing or memory access
patterns. This is a defense against an attack published by
Bleichenbacher. The attacker can also obtain the same information by
observing the length of the plaintext. The current implementation
leaks the length of the plaintext through timing and memory access
patterns.

This commit is a first step towards fixing this leak. It reduces the
leak to a single memmove call inside the working buffer.
2018-10-04 21:38:22 +02:00
..
.gitignore
aes.c Merge remote-tracking branch 'public/pr/1736' into development 2018-06-17 17:34:55 +01:00
aesni.c Warn if using a memory sanitizer on AESNI 2018-04-05 15:37:38 +02:00
arc4.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
aria.c Use mbedtls_printf instead of printf 2018-08-13 13:49:52 +03:00
asn1parse.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
asn1write.c Treat warnings as errors for IAR 2018-05-25 14:54:14 +01:00
base64.c Add comment to integer overflow fix in base64.c 2017-02-15 23:31:07 +02:00
bignum.c Merge remote-tracking branch 'upstream-restricted/pr/421' into development-proposed 2018-05-04 14:39:24 +01:00
blowfish.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
camellia.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
ccm.c enforce input and output of ccm selftest on stack 2018-07-30 11:29:26 +03:00
certs.c Undo API change from SHA1 deprecation 2017-07-27 21:44:33 +01:00
chacha20.c Fix usage of inline with for some compilers 2018-06-07 11:54:17 +02:00
chachapoly.c Fix a few typos 2018-06-18 10:30:30 +02:00
cipher.c Move definition of MBEDTLS_CIPHER_MODE_STREAM 2018-07-01 10:20:43 +03:00
cipher_wrap.c Define specific mode for ChachaPoly 2018-06-19 11:32:48 +02:00
cmac.c Merge remote-tracking branch 'public/pr/1390' into development 2018-06-27 10:51:47 +01:00
CMakeLists.txt Update library version number to 2.13.1 2018-09-06 19:10:26 +01:00
ctr_drbg.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
debug.c Fix compilation error with Mingw32 2017-09-06 17:51:14 +03:00
des.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
dhm.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
ecdh.c Address PR cpomments reviews 2017-10-10 19:04:27 +03:00
ecdsa.c Clarify the use of MBEDTLS_ERR_PK_SIG_LEN_MISMATCH 2018-03-30 18:43:16 +02:00
ecjpake.c Fix minor code style issues 2018-05-15 09:21:57 +01:00
ecp.c Remove redundant else statement 2018-08-20 10:39:27 +03:00
ecp_curves.c Merge branch 'pr_348' into development-proposed 2018-04-04 09:18:27 +02:00
entropy.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
entropy_poll.c Merge remote-tracking branch 'public/pr/1198' into development 2018-07-24 17:20:17 +01:00
error.c Update error codes 2018-08-17 16:52:08 +01:00
gcm.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
havege.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
hkdf.c Fix issue if salt = NULL and salt_len !=0 in mbedtls_hkdf_extract() 2018-07-23 10:34:47 -07:00
hmac_drbg.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
Makefile Update library version number to 2.13.0 2018-08-31 15:59:10 +01:00
md.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md2.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md4.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
md5.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-05 10:47:00 +02:00
md_wrap.c New MD API: rename functions from _ext to _ret 2018-01-22 11:54:42 +01:00
memory_buffer_alloc.c Fix braces in mbedtls_memory_buffer_alloc_status() 2018-06-12 16:56:04 +01:00
net_sockets.c Merge remote-tracking branch 'public/pr/1198' into development 2018-07-24 17:20:17 +01:00
nist_kw.c Add selftests 2018-07-24 16:43:20 +01:00
oid.c pkcs5v2: add support for additional hmacSHA algorithms 2018-02-08 17:18:15 +08:00
padlock.c
pem.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
pk.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
pk_wrap.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
pkcs5.c Treat warnings as errors for IAR 2018-05-25 14:54:14 +01:00
pkcs11.c
pkcs12.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
pkparse.c Remove unnecessary mark as unused #1098 2018-07-11 15:16:53 +02:00
pkwrite.c Adapt PK test suite to use new interface 2017-08-23 16:17:27 +01:00
platform.c Convert mbedtls_free and mbedtls_calloc into functions 2018-06-13 09:17:59 +01:00
platform_util.c Don't declare and define gmtime()-mutex on Windows platforms 2018-09-06 12:09:56 +01:00
poly1305.c Fix usage of inline with for some compilers 2018-06-07 11:54:17 +02:00
ripemd160.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
rsa.c Bleichenbacher fix: don't leak the plaintext length (step 1) 2018-10-04 21:38:22 +02:00
rsa_internal.c Add explicit type cast to avoid truncation warning 2018-01-03 09:27:40 +00:00
sha1.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-05 10:47:00 +02:00
sha256.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-05 10:47:00 +02:00
sha512.c Fix Lucky 13 cache attack on MD/SHA padding 2018-07-05 10:47:00 +02:00
ssl_cache.c Address PR review comments 2017-10-29 17:53:52 +02:00
ssl_ciphersuites.c Merge remote-tracking branch 'upstream-public/pr/1378' into development 2018-08-10 10:59:53 +01:00
ssl_cli.c Merge remote-tracking branch 'public/pr/1988' into development 2018-08-30 00:57:28 +01:00
ssl_cookie.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
ssl_srv.c Style: Add numerous comments indicating condition guarded by #endif 2018-08-28 10:13:29 +01:00
ssl_ticket.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
ssl_tls.c Merge branch 'development' into development 2018-08-30 01:11:35 +01:00
threading.c Don't declare and define gmtime()-mutex on Windows platforms 2018-09-06 12:09:56 +01:00
timing.c library: Port to Haiku. 2018-04-11 20:27:32 -04:00
version.c Fix missing void argument declarations #678 2016-11-04 23:05:56 +01:00
version_features.c Key wrapping API definition 2018-07-24 16:43:20 +01:00
x509.c Rename mbedtls_platform_gmtime() to mbedtls_platform_gmtime_r() 2018-09-05 15:06:19 +01:00
x509_create.c
x509_crl.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
x509_crt.c Merge remote-tracking branch 'restricted/pr/470' into development-restricted 2018-08-28 15:26:11 +01:00
x509_csr.c Merge remote-tracking branch 'public/pr/1621' into development 2018-06-28 12:09:15 +01:00
x509write_crt.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
x509write_csr.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00
xtea.c Rename mbedtls_zeroize to mbedtls_platform_zeroize 2018-04-17 10:00:21 -05:00