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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
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10
library/md.c
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@ -294,4 +294,14 @@ int md_hmac( const md_info_t *md_info, const unsigned char *key, size_t keylen,
return 0;
}
int md_process( md_context_t *ctx, const unsigned char *data )
{
if( ctx == NULL || ctx->md_info == NULL )
return POLARSSL_ERR_MD_BAD_INPUT_DATA;
ctx->md_info->process_func( ctx->md_ctx, data );
return 0;
}
#endif