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Adapt cipher and MD layer with _init() and _free()

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This commit is contained in:
Paul Bakker 2014-07-01 14:53:22 +02:00
parent accaffe2c3
commit 84bbeb58df
13 changed files with 134 additions and 47 deletions
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23
library/md.c
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@ -172,6 +172,22 @@ const md_info_t *md_info_from_type( md_type_t md_type )
}
}
void md_init( md_context_t *ctx )
{
memset( ctx, 0, sizeof( md_context_t ) );
}
void md_free( md_context_t *ctx )
{
if( ctx == NULL )
return;
if( ctx->md_ctx )
ctx->md_info->ctx_free_func( ctx->md_ctx );
polarssl_zeroize( ctx, sizeof( md_context_t ) );
}
int md_init_ctx( md_context_t *ctx, const md_info_t *md_info )
{
if( md_info == NULL || ctx == NULL )
@ -191,12 +207,7 @@ int md_init_ctx( md_context_t *ctx, const md_info_t *md_info )
int md_free_ctx( md_context_t *ctx )
{
if( ctx == NULL || ctx->md_info == NULL )
return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
ctx->md_info->ctx_free_func( ctx->md_ctx );
polarssl_zeroize( ctx, sizeof( md_context_t ) );
md_free( ctx );
return( 0 );
}