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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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40
library/sha256.c
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@ -78,6 +78,19 @@ static void polarssl_zeroize( void *v, size_t n ) {
}
#endif
void sha256_init( sha256_context *ctx )
{
memset( ctx, 0, sizeof( sha256_context ) );
}
void sha256_free( sha256_context *ctx )
{
if( ctx == NULL )
return;
polarssl_zeroize( ctx, sizeof( sha256_context ) );
}
/*
* SHA-256 context setup
*/
@ -338,11 +351,11 @@ void sha256( const unsigned char *input, size_t ilen,
{
sha256_context ctx;
sha256_init( &ctx );
sha256_starts( &ctx, is224 );
sha256_update( &ctx, input, ilen );
sha256_finish( &ctx, output );
polarssl_zeroize( &ctx, sizeof( sha256_context ) );
sha256_free( &ctx );
}
#if defined(POLARSSL_FS_IO)
@ -359,14 +372,14 @@ int sha256_file( const char *path, unsigned char output[32], int is224 )
if( ( f = fopen( path, "rb" ) ) == NULL )
return( POLARSSL_ERR_SHA256_FILE_IO_ERROR );
sha256_init( &ctx );
sha256_starts( &ctx, is224 );
while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
sha256_update( &ctx, buf, n );
sha256_finish( &ctx, output );
polarssl_zeroize( &ctx, sizeof( sha256_context ) );
sha256_free( &ctx );
if( ferror( f ) != 0 )
{
@ -457,11 +470,11 @@ void sha256_hmac( const unsigned char *key, size_t keylen,
{
sha256_context ctx;
sha256_init( &ctx );
sha256_hmac_starts( &ctx, key, keylen, is224 );
sha256_hmac_update( &ctx, input, ilen );
sha256_hmac_finish( &ctx, output );
polarssl_zeroize( &ctx, sizeof( sha256_context ) );
sha256_free( &ctx );
}
#if defined(POLARSSL_SELF_TEST)
@ -632,11 +645,13 @@ static const unsigned char sha256_hmac_test_sum[14][32] =
*/
int sha256_self_test( int verbose )
{
int i, j, k, buflen;
int i, j, k, buflen, ret = 0;
unsigned char buf[1024];
unsigned char sha256sum[32];
sha256_context ctx;
sha256_init( &ctx );
for( i = 0; i < 6; i++ )
{
j = i % 3;
@ -665,7 +680,8 @@ int sha256_self_test( int verbose )
if( verbose != 0 )
polarssl_printf( "failed\n" );
return( 1 );
ret = 1;
goto exit;
}
if( verbose != 0 )
@ -704,7 +720,8 @@ int sha256_self_test( int verbose )
if( verbose != 0 )
polarssl_printf( "failed\n" );
return( 1 );
ret = 1;
goto exit;
}
if( verbose != 0 )
@ -714,7 +731,10 @@ int sha256_self_test( int verbose )
if( verbose != 0 )
polarssl_printf( "\n" );
return( 0 );
exit:
sha256_free( &ctx );
return( ret );
}
#endif /* POLARSSL_SELF_TEST */