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- Split current md_starts() and md_hmac_starts() functionality into separate md_init_ctx() for allocating the context and the existing starts() functions to initialize the message digest for use.

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This commit is contained in:
Paul Bakker 2011-01-20 16:42:01 +00:00
parent a885d6835f
commit 562535d11b
3 changed files with 62 additions and 47 deletions
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48
library/md.c
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@ -147,7 +147,7 @@ const md_info_t *md_info_from_type( md_type_t md_type )
}
}
int md_starts( const md_info_t *md_info, md_context_t *ctx )
int md_init_ctx( md_context_t *ctx, const md_info_t *md_info )
{
if( md_info == NULL )
return 1;
@ -165,6 +165,27 @@ int md_starts( const md_info_t *md_info, md_context_t *ctx )
return 0;
}
int md_free_ctx( md_context_t *ctx )
{
if( ctx == NULL || ctx->md_info == NULL )
return 1;
ctx->md_info->ctx_free_func( ctx->md_ctx );
ctx->md_ctx = NULL;
return 0;
}
int md_starts( md_context_t *ctx )
{
if( ctx == NULL || ctx->md_info == NULL )
return 1;
ctx->md_info->starts_func( ctx->md_ctx );
return 0;
}
int md_update( md_context_t *ctx, const unsigned char *input, int ilen )
{
if( ctx == NULL || ctx->md_info == NULL )
@ -185,16 +206,6 @@ int md_finish( md_context_t *ctx, unsigned char *output )
return 0;
}
int md_free_ctx( md_context_t *ctx )
{
if( ctx == NULL || ctx->md_info == NULL )
return 1;
ctx->md_info->ctx_free_func( ctx->md_ctx );
return 0;
}
int md( const md_info_t *md_info, const unsigned char *input, int ilen,
unsigned char *output )
{
@ -214,21 +225,12 @@ int md_file( const md_info_t *md_info, const char *path, unsigned char *output )
return md_info->file_func( path, output );
}
int md_hmac_starts( const md_info_t *md_info, md_context_t *ctx,
const unsigned char *key, int keylen )
int md_hmac_starts( md_context_t *ctx, const unsigned char *key, int keylen )
{
if(md_info == NULL )
if( ctx == NULL || ctx->md_info == NULL )
return 1;
if( ctx == NULL || ctx->md_ctx != NULL )
return 1;
if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
return 1;
ctx->md_info = md_info;
md_info->hmac_starts_func( ctx->md_ctx, key, keylen);
ctx->md_info->hmac_starts_func( ctx->md_ctx, key, keylen);
return 0;
}