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MDEV-27778 md5 in FIPS crashes with OpenSSL 3.0.0

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OpenSSL 3.0.0+ does not support EVP_MD_CTX_FLAG_NON_FIPS_ALLOW any longer.
In OpenSSL 1.1.1 the non FIPS allowed flag is context specific, while
in 3.0.0+ it is a different EVP_MD provider.

Fixes #2010

part of MDEV-29000
This commit is contained in:
Honza Horak 2022-02-08 16:39:10 +01:00 committed by Vladislav Vaintroub
parent 1dc09ce0fd
commit ef65566981
1 changed files with 11 additions and 0 deletions
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11
mysys_ssl/my_md5.cc
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@ -52,12 +52,23 @@ static void md5_result(EVP_MD_CTX *context, uchar digest[MD5_HASH_SIZE])
static void md5_init(EVP_MD_CTX *context)
{
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
EVP_MD *md5;
EVP_MD_CTX_init(context);
/* Ok to ignore FIPS: MD5 is not used for crypto here */
/* In OpenSSL 3.0.0+ it is a different EVP_MD provider */
md5 = EVP_MD_fetch(NULL, "MD5", "fips=no");
EVP_DigestInit_ex(context, md5, NULL);
EVP_MD_free(md5);
#else
EVP_MD_CTX_init(context);
#ifdef EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
/* Ok to ignore FIPS: MD5 is not used for crypto here */
/* In OpenSSL 1.1.1 the non FIPS allowed flag is context specific */
EVP_MD_CTX_set_flags(context, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
#endif
EVP_DigestInit_ex(context, EVP_md5(), NULL);
#endif
}
static void md5_input(EVP_MD_CTX *context, const uchar *buf, unsigned len)