Don't use dynamic pointer dispatch in md
In the generic message digest abstraction, instead of storing method
pointers in the per-algorithm data structure and using wrapper
functions as those methods, call the per-algorithm function directly.
This saves some code size (2336B -> 2043B for md with all algorithms
enabled on M0+ with gcc -Os). This should also make it easier to
optimize the case when a single algorithm is supported. In addition,
this is a very slight security improvement since it removes one
opportunity for a buffer overflow to directly turn into letting the
attacker overwrite a pointer to a function pointer.
This commit does not modify the documented API. However, it removes
the possibility for users to define their own hash implementations and
use them by building their own md_info.
Changing mbedtls_md_context to contain a md type identifier rather
than a pointer to an info structure would save a few more bytes and a
few more runtime memory accesses, but would be a major API break since
a lot of code uses `const mbedtls_md_info *` to keep track of which
hash is in use.
diff --git a/library/md.c b/library/md.c
index ac8fac5..2ef50f6 100644
--- a/library/md.c
+++ b/library/md.c
@@ -35,6 +35,14 @@
#include "mbedtls/md_internal.h"
#include "mbedtls/platform_util.h"
+#include "mbedtls/md2.h"
+#include "mbedtls/md4.h"
+#include "mbedtls/md5.h"
+#include "mbedtls/ripemd160.h"
+#include "mbedtls/sha1.h"
+#include "mbedtls/sha256.h"
+#include "mbedtls/sha512.h"
+
#if defined(MBEDTLS_PLATFORM_C)
#include "mbedtls/platform.h"
#else
@@ -49,6 +57,83 @@
#include <stdio.h>
#endif
+#if defined(MBEDTLS_MD2_C)
+const mbedtls_md_info_t mbedtls_md2_info = {
+ MBEDTLS_MD_MD2,
+ "MD2",
+ 16,
+ 16,
+};
+#endif
+
+#if defined(MBEDTLS_MD4_C)
+const mbedtls_md_info_t mbedtls_md4_info = {
+ MBEDTLS_MD_MD4,
+ "MD4",
+ 16,
+ 64,
+};
+#endif
+
+#if defined(MBEDTLS_MD5_C)
+const mbedtls_md_info_t mbedtls_md5_info = {
+ MBEDTLS_MD_MD5,
+ "MD5",
+ 16,
+ 64,
+};
+#endif
+
+#if defined(MBEDTLS_RIPEMD160_C)
+const mbedtls_md_info_t mbedtls_ripemd160_info = {
+ MBEDTLS_MD_RIPEMD160,
+ "RIPEMD160",
+ 20,
+ 64,
+};
+#endif
+
+#if defined(MBEDTLS_SHA1_C)
+const mbedtls_md_info_t mbedtls_sha1_info = {
+ MBEDTLS_MD_SHA1,
+ "SHA1",
+ 20,
+ 64,
+};
+#endif
+
+#if defined(MBEDTLS_SHA256_C)
+const mbedtls_md_info_t mbedtls_sha224_info = {
+ MBEDTLS_MD_SHA224,
+ "SHA224",
+ 28,
+ 64,
+};
+
+const mbedtls_md_info_t mbedtls_sha256_info = {
+ MBEDTLS_MD_SHA256,
+ "SHA256",
+ 32,
+ 64,
+};
+#endif
+
+#if defined(MBEDTLS_SHA512_C)
+const mbedtls_md_info_t mbedtls_sha384_info = {
+ MBEDTLS_MD_SHA384,
+ "SHA384",
+ 48,
+ 128,
+};
+
+const mbedtls_md_info_t mbedtls_sha512_info = {
+ MBEDTLS_MD_SHA512,
+ "SHA512",
+ 64,
+ 128,
+};
+#endif
+
/*
* Reminder: update profiles in Mbed TLS's x509_crt.c when adding a new hash!
*/
@@ -185,7 +270,52 @@
return;
if( ctx->md_ctx != NULL )
- ctx->md_info->ctx_free_func( ctx->md_ctx );
+ {
+ switch( ctx->md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ mbedtls_md2_free( ctx->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ mbedtls_md4_free( ctx->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ mbedtls_md5_free( ctx->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ mbedtls_ripemd160_free( ctx->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ mbedtls_sha1_free( ctx->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ case MBEDTLS_MD_SHA256:
+ mbedtls_sha256_free( ctx->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ case MBEDTLS_MD_SHA512:
+ mbedtls_sha512_free( ctx->md_ctx );
+ break;
+#endif
+ default:
+ /* Shouldn't happen */
+ break;
+ }
+ mbedtls_free( ctx->md_ctx );
+ }
if( ctx->hmac_ctx != NULL )
{
@@ -207,7 +337,48 @@
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
}
- dst->md_info->clone_func( dst->md_ctx, src->md_ctx );
+ switch( src->md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ mbedtls_md2_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ mbedtls_md4_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ mbedtls_md5_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ mbedtls_ripemd160_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ mbedtls_sha1_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ case MBEDTLS_MD_SHA256:
+ mbedtls_sha256_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ case MBEDTLS_MD_SHA512:
+ mbedtls_sha512_clone( dst->md_ctx, src->md_ctx );
+ break;
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
return( 0 );
}
@@ -219,20 +390,69 @@
}
#endif
+#define ALLOC( type ) \
+ do { \
+ ctx->md_ctx = mbedtls_calloc( 1, sizeof( mbedtls_##type##_context ) ); \
+ if( ctx->md_ctx == NULL ) \
+ return( MBEDTLS_ERR_MD_ALLOC_FAILED ); \
+ mbedtls_##type##_init( ctx->md_ctx ); \
+ } \
+ while( 0 )
+
int mbedtls_md_setup( mbedtls_md_context_t *ctx, const mbedtls_md_info_t *md_info, int hmac )
{
if( md_info == NULL || ctx == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
- return( MBEDTLS_ERR_MD_ALLOC_FAILED );
+ switch( md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ ALLOC( md2 );
+ break;
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ ALLOC( md4 );
+ break;
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ ALLOC( md5 );
+ break;
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ ALLOC( ripemd160 );
+ break;
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ ALLOC( sha1 );
+ break;
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ case MBEDTLS_MD_SHA256:
+ ALLOC( sha256 );
+ break;
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ case MBEDTLS_MD_SHA512:
+ ALLOC( sha512 );
+ break;
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
if( hmac != 0 )
{
ctx->hmac_ctx = mbedtls_calloc( 2, md_info->block_size );
if( ctx->hmac_ctx == NULL )
{
- md_info->ctx_free_func( ctx->md_ctx );
+ mbedtls_md_free( ctx );
return( MBEDTLS_ERR_MD_ALLOC_FAILED );
}
}
@@ -241,13 +461,50 @@
return( 0 );
}
+#undef ALLOC
int mbedtls_md_starts( mbedtls_md_context_t *ctx )
{
if( ctx == NULL || ctx->md_info == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- return( ctx->md_info->starts_func( ctx->md_ctx ) );
+ switch( ctx->md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ return( mbedtls_md2_starts_ret( ctx->md_ctx ) );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ return( mbedtls_md4_starts_ret( ctx->md_ctx ) );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ return( mbedtls_md5_starts_ret( ctx->md_ctx ) );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ return( mbedtls_ripemd160_starts_ret( ctx->md_ctx ) );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ return( mbedtls_sha1_starts_ret( ctx->md_ctx ) );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ return( mbedtls_sha256_starts_ret( ctx->md_ctx, 1 ) );
+ case MBEDTLS_MD_SHA256:
+ return( mbedtls_sha256_starts_ret( ctx->md_ctx, 0 ) );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ return( mbedtls_sha512_starts_ret( ctx->md_ctx, 1 ) );
+ case MBEDTLS_MD_SHA512:
+ return( mbedtls_sha512_starts_ret( ctx->md_ctx, 0 ) );
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
}
int mbedtls_md_update( mbedtls_md_context_t *ctx, const unsigned char *input, size_t ilen )
@@ -255,7 +512,43 @@
if( ctx == NULL || ctx->md_info == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- return( ctx->md_info->update_func( ctx->md_ctx, input, ilen ) );
+ switch( ctx->md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ return( mbedtls_md2_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ return( mbedtls_md4_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ return( mbedtls_md5_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ return( mbedtls_ripemd160_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ return( mbedtls_sha1_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ return( mbedtls_sha256_update_ret( ctx->md_ctx, input, ilen ) );
+ case MBEDTLS_MD_SHA256:
+ return( mbedtls_sha256_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ return( mbedtls_sha512_update_ret( ctx->md_ctx, input, ilen ) );
+ case MBEDTLS_MD_SHA512:
+ return( mbedtls_sha512_update_ret( ctx->md_ctx, input, ilen ) );
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
}
int mbedtls_md_finish( mbedtls_md_context_t *ctx, unsigned char *output )
@@ -263,7 +556,43 @@
if( ctx == NULL || ctx->md_info == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- return( ctx->md_info->finish_func( ctx->md_ctx, output ) );
+ switch( ctx->md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ return( mbedtls_md2_finish_ret( ctx->md_ctx, output ) );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ return( mbedtls_md4_finish_ret( ctx->md_ctx, output ) );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ return( mbedtls_md5_finish_ret( ctx->md_ctx, output ) );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ return( mbedtls_ripemd160_finish_ret( ctx->md_ctx, output ) );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ return( mbedtls_sha1_finish_ret( ctx->md_ctx, output ) );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ return( mbedtls_sha256_finish_ret( ctx->md_ctx, output ) );
+ case MBEDTLS_MD_SHA256:
+ return( mbedtls_sha256_finish_ret( ctx->md_ctx, output ) );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ return( mbedtls_sha512_finish_ret( ctx->md_ctx, output ) );
+ case MBEDTLS_MD_SHA512:
+ return( mbedtls_sha512_finish_ret( ctx->md_ctx, output ) );
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
}
int mbedtls_md( const mbedtls_md_info_t *md_info, const unsigned char *input, size_t ilen,
@@ -272,7 +601,43 @@
if( md_info == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- return( md_info->digest_func( input, ilen, output ) );
+ switch( md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ return( mbedtls_md2_ret( input, ilen, output ) );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ return( mbedtls_md4_ret( input, ilen, output ) );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ return( mbedtls_md5_ret( input, ilen, output ) );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ return( mbedtls_ripemd160_ret( input, ilen, output ) );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ return( mbedtls_sha1_ret( input, ilen, output ) );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ return( mbedtls_sha256_ret( input, ilen, output, 1 ) );
+ case MBEDTLS_MD_SHA256:
+ return( mbedtls_sha256_ret( input, ilen, output, 0 ) );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ return( mbedtls_sha512_ret( input, ilen, output, 1 ) );
+ case MBEDTLS_MD_SHA512:
+ return( mbedtls_sha512_ret( input, ilen, output, 0 ) );
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
}
#if defined(MBEDTLS_FS_IO)
@@ -295,17 +660,17 @@
if( ( ret = mbedtls_md_setup( &ctx, md_info, 0 ) ) != 0 )
goto cleanup;
- if( ( ret = md_info->starts_func( ctx.md_ctx ) ) != 0 )
+ if( ( ret = mbedtls_md_starts( &ctx ) ) != 0 )
goto cleanup;
while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
- if( ( ret = md_info->update_func( ctx.md_ctx, buf, n ) ) != 0 )
+ if( ( ret = mbedtls_md_update( &ctx, buf, n ) ) != 0 )
goto cleanup;
if( ferror( f ) != 0 )
ret = MBEDTLS_ERR_MD_FILE_IO_ERROR;
else
- ret = md_info->finish_func( ctx.md_ctx, output );
+ ret = mbedtls_md_finish( &ctx, output );
cleanup:
mbedtls_platform_zeroize( buf, sizeof( buf ) );
@@ -328,11 +693,11 @@
if( keylen > (size_t) ctx->md_info->block_size )
{
- if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
goto cleanup;
- if( ( ret = ctx->md_info->update_func( ctx->md_ctx, key, keylen ) ) != 0 )
+ if( ( ret = mbedtls_md_update( ctx, key, keylen ) ) != 0 )
goto cleanup;
- if( ( ret = ctx->md_info->finish_func( ctx->md_ctx, sum ) ) != 0 )
+ if( ( ret = mbedtls_md_finish( ctx, sum ) ) != 0 )
goto cleanup;
keylen = ctx->md_info->size;
@@ -351,10 +716,10 @@
opad[i] = (unsigned char)( opad[i] ^ key[i] );
}
- if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
goto cleanup;
- if( ( ret = ctx->md_info->update_func( ctx->md_ctx, ipad,
- ctx->md_info->block_size ) ) != 0 )
+ if( ( ret = mbedtls_md_update( ctx, ipad,
+ ctx->md_info->block_size ) ) != 0 )
goto cleanup;
cleanup:
@@ -368,7 +733,7 @@
if( ctx == NULL || ctx->md_info == NULL || ctx->hmac_ctx == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- return( ctx->md_info->update_func( ctx->md_ctx, input, ilen ) );
+ return( mbedtls_md_update( ctx, input, ilen ) );
}
int mbedtls_md_hmac_finish( mbedtls_md_context_t *ctx, unsigned char *output )
@@ -382,17 +747,17 @@
opad = (unsigned char *) ctx->hmac_ctx + ctx->md_info->block_size;
- if( ( ret = ctx->md_info->finish_func( ctx->md_ctx, tmp ) ) != 0 )
+ if( ( ret = mbedtls_md_finish( ctx, tmp ) ) != 0 )
return( ret );
- if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
return( ret );
- if( ( ret = ctx->md_info->update_func( ctx->md_ctx, opad,
- ctx->md_info->block_size ) ) != 0 )
+ if( ( ret = mbedtls_md_update( ctx, opad,
+ ctx->md_info->block_size ) ) != 0 )
return( ret );
- if( ( ret = ctx->md_info->update_func( ctx->md_ctx, tmp,
- ctx->md_info->size ) ) != 0 )
+ if( ( ret = mbedtls_md_update( ctx, tmp,
+ ctx->md_info->size ) ) != 0 )
return( ret );
- return( ctx->md_info->finish_func( ctx->md_ctx, output ) );
+ return( mbedtls_md_finish( ctx, output ) );
}
int mbedtls_md_hmac_reset( mbedtls_md_context_t *ctx )
@@ -405,10 +770,9 @@
ipad = (unsigned char *) ctx->hmac_ctx;
- if( ( ret = ctx->md_info->starts_func( ctx->md_ctx ) ) != 0 )
+ if( ( ret = mbedtls_md_starts( ctx ) ) != 0 )
return( ret );
- return( ctx->md_info->update_func( ctx->md_ctx, ipad,
- ctx->md_info->block_size ) );
+ return( mbedtls_md_update( ctx, ipad, ctx->md_info->block_size ) );
}
int mbedtls_md_hmac( const mbedtls_md_info_t *md_info,
@@ -445,7 +809,43 @@
if( ctx == NULL || ctx->md_info == NULL )
return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
- return( ctx->md_info->process_func( ctx->md_ctx, data ) );
+ switch( ctx->md_info->type )
+ {
+#if defined(MBEDTLS_MD2_C)
+ case MBEDTLS_MD_MD2:
+ return( mbedtls_internal_md2_process( ctx->md_ctx ) );
+#endif
+#if defined(MBEDTLS_MD4_C)
+ case MBEDTLS_MD_MD4:
+ return( mbedtls_internal_md4_process( ctx->md_ctx, data ) );
+#endif
+#if defined(MBEDTLS_MD5_C)
+ case MBEDTLS_MD_MD5:
+ return( mbedtls_internal_md5_process( ctx->md_ctx, data ) );
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+ case MBEDTLS_MD_RIPEMD160:
+ return( mbedtls_internal_ripemd160_process( ctx->md_ctx, data ) );
+#endif
+#if defined(MBEDTLS_SHA1_C)
+ case MBEDTLS_MD_SHA1:
+ return( mbedtls_internal_sha1_process( ctx->md_ctx, data ) );
+#endif
+#if defined(MBEDTLS_SHA256_C)
+ case MBEDTLS_MD_SHA224:
+ return( mbedtls_internal_sha256_process( ctx->md_ctx, data ) );
+ case MBEDTLS_MD_SHA256:
+ return( mbedtls_internal_sha256_process( ctx->md_ctx, data ) );
+#endif
+#if defined(MBEDTLS_SHA512_C)
+ case MBEDTLS_MD_SHA384:
+ return( mbedtls_internal_sha512_process( ctx->md_ctx, data ) );
+ case MBEDTLS_MD_SHA512:
+ return( mbedtls_internal_sha512_process( ctx->md_ctx, data ) );
+#endif
+ default:
+ return( MBEDTLS_ERR_MD_BAD_INPUT_DATA );
+ }
}
unsigned char mbedtls_md_get_size( const mbedtls_md_info_t *md_info )
