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Add _init() and _free() for hash modules

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This commit is contained in:
Paul Bakker 2014-06-26 12:09:34 +02:00
parent 8cfd9d8c59
commit 5b4af39a36
19 changed files with 346 additions and 73 deletions
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25
library/md5.c
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@ -78,6 +78,19 @@ static void polarssl_zeroize( void *v, size_t n ) {
}
#endif
void md5_init( md5_context *ctx )
{
memset( ctx, 0, sizeof( md5_context ) );
}
void md5_free( md5_context *ctx )
{
if( ctx == NULL )
return;
polarssl_zeroize( ctx, sizeof( md5_context ) );
}
/*
* MD5 context setup
*/
@ -302,11 +315,11 @@ void md5( const unsigned char *input, size_t ilen, unsigned char output[16] )
{
md5_context ctx;
md5_init( &ctx );
md5_starts( &ctx );
md5_update( &ctx, input, ilen );
md5_finish( &ctx, output );
polarssl_zeroize( &ctx, sizeof( md5_context ) );
md5_free( &ctx );
}
#if defined(POLARSSL_FS_IO)
@ -323,14 +336,14 @@ int md5_file( const char *path, unsigned char output[16] )
if( ( f = fopen( path, "rb" ) ) == NULL )
return( POLARSSL_ERR_MD5_FILE_IO_ERROR );
md5_init( &ctx );
md5_starts( &ctx );
while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
md5_update( &ctx, buf, n );
md5_finish( &ctx, output );
polarssl_zeroize( &ctx, sizeof( md5_context ) );
md5_free( &ctx );
if( ferror( f ) != 0 )
{
@ -417,11 +430,11 @@ void md5_hmac( const unsigned char *key, size_t keylen,
{
md5_context ctx;
md5_init( &ctx );
md5_hmac_starts( &ctx, key, keylen );
md5_hmac_update( &ctx, input, ilen );
md5_hmac_finish( &ctx, output );
polarssl_zeroize( &ctx, sizeof( md5_context ) );
md5_free( &ctx );
}
#if defined(POLARSSL_SELF_TEST)