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Added md_process() to MD layer for generic internal access to hash

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process functions

Access to process functions is needed to reduce possible timing attacks
on SSL MAC checks. As SSL is set to move to using the dynamic MD layer,
the MD layer needs access to these process functions as well.
This commit is contained in:
Paul Bakker 2013-03-13 10:26:44 +01:00
parent 90f042d4cb
commit 1bd3ae826c
9 changed files with 77 additions and 3 deletions
library
md_wrap.c

50
library/md_wrap.c
View file

@ -117,6 +117,13 @@ static void md2_ctx_free( void *ctx )
free( ctx );
}
static void md2_process_wrap( void *ctx, const unsigned char *data )
{
((void) data);
md2_process( (md2_context *) ctx );
}
const md_info_t md2_info = {
POLARSSL_MD_MD2,
"MD2",
@ -133,6 +140,7 @@ const md_info_t md2_info = {
md2_hmac,
md2_ctx_alloc,
md2_ctx_free,
md2_process_wrap,
};
#endif
@ -195,6 +203,11 @@ void md4_ctx_free( void *ctx )
free( ctx );
}
void md4_process_wrap( void *ctx, const unsigned char *data )
{
md4_process( (md4_context *) ctx, data );
}
const md_info_t md4_info = {
POLARSSL_MD_MD4,
"MD4",
@ -211,6 +224,7 @@ const md_info_t md4_info = {
md4_hmac,
md4_ctx_alloc,
md4_ctx_free,
md4_process_wrap,
};
#endif
@ -273,6 +287,11 @@ static void md5_ctx_free( void *ctx )
free( ctx );
}
static void md5_process_wrap( void *ctx, const unsigned char *data )
{
md5_process( (md5_context *) ctx, data );
}
const md_info_t md5_info = {
POLARSSL_MD_MD5,
"MD5",
@ -289,6 +308,7 @@ const md_info_t md5_info = {
md5_hmac,
md5_ctx_alloc,
md5_ctx_free,
md5_process_wrap,
};
#endif
@ -351,6 +371,11 @@ void sha1_ctx_free( void *ctx )
free( ctx );
}
void sha1_process_wrap( void *ctx, const unsigned char *data )
{
sha1_process( (sha1_context *) ctx, data );
}
const md_info_t sha1_info = {
POLARSSL_MD_SHA1,
"SHA1",
@ -367,6 +392,7 @@ const md_info_t sha1_info = {
sha1_hmac,
sha1_ctx_alloc,
sha1_ctx_free,
sha1_process_wrap,
};
#endif
@ -445,6 +471,11 @@ void sha224_ctx_free( void *ctx )
free( ctx );
}
void sha224_process_wrap( void *ctx, const unsigned char *data )
{
sha2_process( (sha2_context *) ctx, data );
}
const md_info_t sha224_info = {
POLARSSL_MD_SHA224,
"SHA224",
@ -461,6 +492,7 @@ const md_info_t sha224_info = {
sha224_hmac_wrap,
sha224_ctx_alloc,
sha224_ctx_free,
sha224_process_wrap,
};
void sha256_starts_wrap( void *ctx )
@ -532,6 +564,11 @@ void sha256_ctx_free( void *ctx )
free( ctx );
}
void sha256_process_wrap( void *ctx, const unsigned char *data )
{
sha2_process( (sha2_context *) ctx, data );
}
const md_info_t sha256_info = {
POLARSSL_MD_SHA256,
"SHA256",
@ -548,6 +585,7 @@ const md_info_t sha256_info = {
sha256_hmac_wrap,
sha256_ctx_alloc,
sha256_ctx_free,
sha256_process_wrap,
};
#endif
@ -623,6 +661,11 @@ void sha384_ctx_free( void *ctx )
free( ctx );
}
void sha384_process_wrap( void *ctx, const unsigned char *data )
{
sha4_process( (sha4_context *) ctx, data );
}
const md_info_t sha384_info = {
POLARSSL_MD_SHA384,
"SHA384",
@ -639,6 +682,7 @@ const md_info_t sha384_info = {
sha384_hmac_wrap,
sha384_ctx_alloc,
sha384_ctx_free,
sha384_process_wrap,
};
void sha512_starts_wrap( void *ctx )
@ -710,6 +754,11 @@ void sha512_ctx_free( void *ctx )
free( ctx );
}
void sha512_process_wrap( void *ctx, const unsigned char *data )
{
sha4_process( (sha4_context *) ctx, data );
}
const md_info_t sha512_info = {
POLARSSL_MD_SHA512,
"SHA512",
@ -726,6 +775,7 @@ const md_info_t sha512_info = {
sha512_hmac_wrap,
sha512_ctx_alloc,
sha512_ctx_free,
sha512_process_wrap,
};
#endif