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Add int return values to MD5 function calls

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The following function calls are being deprecated to introduce int
return values.
    * mbedtls_md5()
    * mbedtls_md5_starts()
    * mbedtls_md5_update()
    * mbedtls_md5_finish()
    * mbedtls_md5_process()
The return codes can be used to return error values. This is important
when using hardware accelerators.
This commit is contained in:
Andres Amaya Garcia 2017-05-02 10:19:27 +01:00
parent bee0635b15
commit 2cfd7a982c
2 changed files with 177 additions and 26 deletions
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127
include/mbedtls/md5.h
View File

@ -78,8 +78,10 @@ void mbedtls_md5_clone( mbedtls_md5_context *dst,
* \brief MD5 context setup
*
* \param ctx context to be initialized
*
* \return 0 if successful
*/
void mbedtls_md5_starts( mbedtls_md5_context *ctx );
int mbedtls_md5_starts_ext( mbedtls_md5_context *ctx );
/**
* \brief MD5 process buffer
@ -87,19 +89,103 @@ void mbedtls_md5_starts( mbedtls_md5_context *ctx );
* \param ctx MD5 context
* \param input buffer holding the data
* \param ilen length of the input data
*
* \return 0 if successful
*/
void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen );
int mbedtls_md5_update_ext( mbedtls_md5_context *ctx,
const unsigned char *input,
size_t ilen );
/**
* \brief MD5 final digest
*
* \param ctx MD5 context
* \param output MD5 checksum result
*
* \return 0 if successful
*/
void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] );
int mbedtls_md5_finish_ext( mbedtls_md5_context *ctx,
unsigned char output[16] );
/* Internal use */
void mbedtls_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64] );
/**
* \brief MD5 process data block (internal use only)
*
* \param ctx MD5 context
* \param data buffer holding one block of data
*
* \return 0 if successful
*/
int mbedtls_md5_process_ext( mbedtls_md5_context *ctx,
const unsigned char data[64] );
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief MD5 context setup
*
* \deprecated Superseded by mbedtls_md5_starts_ext() in 2.5.0
*
* \param ctx context to be initialized
*/
MBEDTLS_DEPRECATED static inline void mbedtls_md5_starts(
mbedtls_md5_context *ctx )
{
mbedtls_md5_starts_ext( ctx );
}
/**
* \brief MD5 process buffer
*
* \deprecated Superseded by mbedtls_md5_update_ext() in 2.5.0
*
* \param ctx MD5 context
* \param input buffer holding the data
* \param ilen length of the input data
*/
MBEDTLS_DEPRECATED static inline void mbedtls_md5_update(
mbedtls_md5_context *ctx,
const unsigned char *input,
size_t ilen )
{
mbedtls_md5_update_ext( ctx, input, ilen );
}
/**
* \brief MD5 final digest
*
* \deprecated Superseded by mbedtls_md5_finish_ext() in 2.5.0
*
* \param ctx MD5 context
* \param output MD5 checksum result
*/
MBEDTLS_DEPRECATED static inline void mbedtls_md5_finish(
mbedtls_md5_context *ctx,
unsigned char output[16] )
{
mbedtls_md5_finish_ext( ctx, output );
}
/**
* \brief MD5 process data block (internal use only)
*
* \deprecated Superseded by mbedtls_md5_process_ext() in 2.5.0
*
* \param ctx MD5 context
* \param data buffer holding one block of data
*/
MBEDTLS_DEPRECATED static inline void mbedtls_md5_process(
mbedtls_md5_context *ctx,
const unsigned char data[64] )
{
mbedtls_md5_process_ext( ctx, data );
}
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
#ifdef __cplusplus
}
@ -119,8 +205,37 @@ extern "C" {
* \param input buffer holding the data
* \param ilen length of the input data
* \param output MD5 checksum result
*
* \return 0 if successful
*/
void mbedtls_md5( const unsigned char *input, size_t ilen, unsigned char output[16] );
int mbedtls_md5_ext( const unsigned char *input,
size_t ilen,
unsigned char output[16] );
#if !defined(MBEDTLS_DEPRECATED_REMOVED)
#if defined(MBEDTLS_DEPRECATED_WARNING)
#define MBEDTLS_DEPRECATED __attribute__((deprecated))
#else
#define MBEDTLS_DEPRECATED
#endif
/**
* \brief Output = MD5( input buffer )
*
* \deprecated Superseded by mbedtls_md5_ext() in 2.5.0
*
* \param input buffer holding the data
* \param ilen length of the input data
* \param output MD5 checksum result
*/
MBEDTLS_DEPRECATED static inline void mbedtls_md5( const unsigned char *input,
size_t ilen,
unsigned char output[16] )
{
mbedtls_md5_ext( input, ilen, output );
}
#undef MBEDTLS_DEPRECATED
#endif /* !MBEDTLS_DEPRECATED_REMOVED */
/**
* \brief Checkup routine

76
library/md5.c
View File

@ -97,7 +97,7 @@ void mbedtls_md5_clone( mbedtls_md5_context *dst,
/*
* MD5 context setup
*/
void mbedtls_md5_starts( mbedtls_md5_context *ctx )
int mbedtls_md5_starts_ext( mbedtls_md5_context *ctx )
{
ctx->total[0] = 0;
ctx->total[1] = 0;
@ -106,10 +106,13 @@ void mbedtls_md5_starts( mbedtls_md5_context *ctx )
ctx->state[1] = 0xEFCDAB89;
ctx->state[2] = 0x98BADCFE;
ctx->state[3] = 0x10325476;
return( 0 );
}
#if !defined(MBEDTLS_MD5_PROCESS_ALT)
void mbedtls_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64] )
int mbedtls_md5_process_ext( mbedtls_md5_context *ctx,
const unsigned char data[64] )
{
uint32_t X[16], A, B, C, D;
@ -230,19 +233,24 @@ void mbedtls_md5_process( mbedtls_md5_context *ctx, const unsigned char data[64]
ctx->state[1] += B;
ctx->state[2] += C;
ctx->state[3] += D;
return( 0 );
}
#endif /* !MBEDTLS_MD5_PROCESS_ALT */
/*
* MD5 process buffer
*/
void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, size_t ilen )
int mbedtls_md5_update_ext( mbedtls_md5_context *ctx,
const unsigned char *input,
size_t ilen )
{
int ret;
size_t fill;
uint32_t left;
if( ilen == 0 )
return;
return( 0 );
left = ctx->total[0] & 0x3F;
fill = 64 - left;
@ -256,7 +264,9 @@ void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, s
if( left && ilen >= fill )
{
memcpy( (void *) (ctx->buffer + left), input, fill );
mbedtls_md5_process( ctx, ctx->buffer );
if( ( ret = mbedtls_md5_process_ext( ctx, ctx->buffer ) ) != 0 )
return( ret );
input += fill;
ilen -= fill;
left = 0;
@ -264,7 +274,9 @@ void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, s
while( ilen >= 64 )
{
mbedtls_md5_process( ctx, input );
if( ( ret = mbedtls_md5_process_ext( ctx, input ) ) != 0 )
return( ret );
input += 64;
ilen -= 64;
}
@ -273,6 +285,8 @@ void mbedtls_md5_update( mbedtls_md5_context *ctx, const unsigned char *input, s
{
memcpy( (void *) (ctx->buffer + left), input, ilen );
}
return( 0 );
}
static const unsigned char md5_padding[64] =
@ -286,8 +300,10 @@ static const unsigned char md5_padding[64] =
/*
* MD5 final digest
*/
void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] )
int mbedtls_md5_finish_ext( mbedtls_md5_context *ctx,
unsigned char output[16] )
{
int ret;
uint32_t last, padn;
uint32_t high, low;
unsigned char msglen[8];
@ -302,13 +318,18 @@ void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] )
last = ctx->total[0] & 0x3F;
padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
mbedtls_md5_update( ctx, md5_padding, padn );
mbedtls_md5_update( ctx, msglen, 8 );
if( ( ret = mbedtls_md5_update_ext( ctx, md5_padding, padn ) ) != 0 )
return( ret );
if( ( ret = mbedtls_md5_update_ext( ctx, msglen, 8 ) ) != 0 )
return( ret );
PUT_UINT32_LE( ctx->state[0], output, 0 );
PUT_UINT32_LE( ctx->state[1], output, 4 );
PUT_UINT32_LE( ctx->state[2], output, 8 );
PUT_UINT32_LE( ctx->state[3], output, 12 );
return( 0 );
}
#endif /* !MBEDTLS_MD5_ALT */
@ -316,15 +337,27 @@ void mbedtls_md5_finish( mbedtls_md5_context *ctx, unsigned char output[16] )
/*
* output = MD5( input buffer )
*/
void mbedtls_md5( const unsigned char *input, size_t ilen, unsigned char output[16] )
int mbedtls_md5_ext( const unsigned char *input,
size_t ilen,
unsigned char output[16] )
{
int ret;
mbedtls_md5_context ctx;
mbedtls_md5_init( &ctx );
mbedtls_md5_starts( &ctx );
mbedtls_md5_update( &ctx, input, ilen );
mbedtls_md5_finish( &ctx, output );
if( ( ret = mbedtls_md5_starts_ext( &ctx ) ) != 0 )
return( ret );
if( ( ret = mbedtls_md5_update_ext( &ctx, input, ilen ) ) != 0 )
return( ret );
if( ( ret = mbedtls_md5_finish_ext( &ctx, output ) ) != 0 )
return( ret );
mbedtls_md5_free( &ctx );
return( 0 );
}
#if defined(MBEDTLS_SELF_TEST)
@ -379,15 +412,12 @@ int mbedtls_md5_self_test( int verbose )
if( verbose != 0 )
mbedtls_printf( " MD5 test #%d: ", i + 1 );
mbedtls_md5( md5_test_buf[i], md5_test_buflen[i], md5sum );
if( mbedtls_md5_ext( md5_test_buf[i],
md5_test_buflen[i], md5sum ) != 0 )
goto fail;
if( memcmp( md5sum, md5_test_sum[i], 16 ) != 0 )
{
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
}
goto fail;
if( verbose != 0 )
mbedtls_printf( "passed\n" );
@ -397,6 +427,12 @@ int mbedtls_md5_self_test( int verbose )
mbedtls_printf( "\n" );
return( 0 );
fail:
if( verbose != 0 )
mbedtls_printf( "failed\n" );
return( 1 );
}
#endif /* MBEDTLS_SELF_TEST */