Diff: polarssl/md.c

Revision:

0:137634ff4186

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/polarssl/md.c	Thu Jun 11 03:27:03 2015 +0000
@@ -0,0 +1,342 @@
+/**
+ * \file md.c
+ *
+ * \brief Generic message digest wrapper for mbed TLS
+ *
+ * \author Adriaan de Jong <dejong@fox-it.com>
+ *
+ *  Copyright (C) 2006-2014, ARM Limited, All Rights Reserved
+ *
+ *  This file is part of mbed TLS (https://tls.mbed.org)
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#if !defined(POLARSSL_CONFIG_FILE)
+#include "polarssl/config.h"
+#else
+#include POLARSSL_CONFIG_FILE
+#endif
+
+#if defined(POLARSSL_MD_C)
+
+#include "polarssl/md.h"
+#include "polarssl/md_wrap.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(_MSC_VER) && !defined strcasecmp && !defined(EFIX64) && \
+    !defined(EFI32)
+#define strcasecmp  _stricmp
+#endif
+
+/* Implementation that should never be optimized out by the compiler */
+static void polarssl_zeroize( void *v, size_t n ) {
+    volatile unsigned char *p = v; while( n-- ) *p++ = 0;
+}
+
+static const int supported_digests[] = {
+
+#if defined(POLARSSL_SHA512_C)
+        POLARSSL_MD_SHA512,
+        POLARSSL_MD_SHA384,
+#endif
+
+#if defined(POLARSSL_SHA256_C)
+        POLARSSL_MD_SHA256,
+        POLARSSL_MD_SHA224,
+#endif
+
+#if defined(POLARSSL_SHA1_C)
+        POLARSSL_MD_SHA1,
+#endif
+
+#if defined(POLARSSL_RIPEMD160_C)
+        POLARSSL_MD_RIPEMD160,
+#endif
+
+#if defined(POLARSSL_MD5_C)
+        POLARSSL_MD_MD5,
+#endif
+
+#if defined(POLARSSL_MD4_C)
+        POLARSSL_MD_MD4,
+#endif
+
+#if defined(POLARSSL_MD2_C)
+        POLARSSL_MD_MD2,
+#endif
+
+        POLARSSL_MD_NONE
+};
+
+const int *md_list( void )
+{
+    return( supported_digests );
+}
+
+const md_info_t *md_info_from_string( const char *md_name )
+{
+    if( NULL == md_name )
+        return( NULL );
+
+    /* Get the appropriate digest information */
+#if defined(POLARSSL_MD2_C)
+    if( !strcasecmp( "MD2", md_name ) )
+        return md_info_from_type( POLARSSL_MD_MD2 );
+#endif
+#if defined(POLARSSL_MD4_C)
+    if( !strcasecmp( "MD4", md_name ) )
+        return md_info_from_type( POLARSSL_MD_MD4 );
+#endif
+#if defined(POLARSSL_MD5_C)
+    if( !strcasecmp( "MD5", md_name ) )
+        return md_info_from_type( POLARSSL_MD_MD5 );
+#endif
+#if defined(POLARSSL_RIPEMD160_C)
+    if( !strcasecmp( "RIPEMD160", md_name ) )
+        return md_info_from_type( POLARSSL_MD_RIPEMD160 );
+#endif
+#if defined(POLARSSL_SHA1_C)
+    if( !strcasecmp( "SHA1", md_name ) || !strcasecmp( "SHA", md_name ) )
+        return md_info_from_type( POLARSSL_MD_SHA1 );
+#endif
+#if defined(POLARSSL_SHA256_C)
+    if( !strcasecmp( "SHA224", md_name ) )
+        return md_info_from_type( POLARSSL_MD_SHA224 );
+    if( !strcasecmp( "SHA256", md_name ) )
+        return md_info_from_type( POLARSSL_MD_SHA256 );
+#endif
+#if defined(POLARSSL_SHA512_C)
+    if( !strcasecmp( "SHA384", md_name ) )
+        return md_info_from_type( POLARSSL_MD_SHA384 );
+    if( !strcasecmp( "SHA512", md_name ) )
+        return md_info_from_type( POLARSSL_MD_SHA512 );
+#endif
+    return( NULL );
+}
+
+const md_info_t *md_info_from_type( md_type_t md_type )
+{
+    switch( md_type )
+    {
+#if defined(POLARSSL_MD2_C)
+        case POLARSSL_MD_MD2:
+            return( &md2_info );
+#endif
+#if defined(POLARSSL_MD4_C)
+        case POLARSSL_MD_MD4:
+            return( &md4_info );
+#endif
+#if defined(POLARSSL_MD5_C)
+        case POLARSSL_MD_MD5:
+            return( &md5_info );
+#endif
+#if defined(POLARSSL_RIPEMD160_C)
+        case POLARSSL_MD_RIPEMD160:
+            return( &ripemd160_info );
+#endif
+#if defined(POLARSSL_SHA1_C)
+        case POLARSSL_MD_SHA1:
+            return( &sha1_info );
+#endif
+#if defined(POLARSSL_SHA256_C)
+        case POLARSSL_MD_SHA224:
+            return( &sha224_info );
+        case POLARSSL_MD_SHA256:
+            return( &sha256_info );
+#endif
+#if defined(POLARSSL_SHA512_C)
+        case POLARSSL_MD_SHA384:
+            return( &sha384_info );
+        case POLARSSL_MD_SHA512:
+            return( &sha512_info );
+#endif
+        default:
+            return( NULL );
+    }
+}
+
+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 )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    memset( ctx, 0, sizeof( md_context_t ) );
+
+    if( ( ctx->md_ctx = md_info->ctx_alloc_func() ) == NULL )
+        return( POLARSSL_ERR_MD_ALLOC_FAILED );
+
+    ctx->md_info = md_info;
+
+    md_info->starts_func( ctx->md_ctx );
+
+    return( 0 );
+}
+
+#if ! defined(POLARSSL_DEPRECATED_REMOVED)
+int md_free_ctx( md_context_t *ctx )
+{
+    md_free( ctx );
+
+    return( 0 );
+}
+#endif
+
+int md_starts( md_context_t *ctx )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->starts_func( ctx->md_ctx );
+
+    return( 0 );
+}
+
+int md_update( md_context_t *ctx, const unsigned char *input, size_t ilen )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->update_func( ctx->md_ctx, input, ilen );
+
+    return( 0 );
+}
+
+int md_finish( md_context_t *ctx, unsigned char *output )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->finish_func( ctx->md_ctx, output );
+
+    return( 0 );
+}
+
+int md( const md_info_t *md_info, const unsigned char *input, size_t ilen,
+            unsigned char *output )
+{
+    if( md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    md_info->digest_func( input, ilen, output );
+
+    return( 0 );
+}
+
+int md_file( const md_info_t *md_info, const char *path, unsigned char *output )
+{
+#if defined(POLARSSL_FS_IO)
+    int ret;
+#endif
+
+    if( md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+#if defined(POLARSSL_FS_IO)
+    ret = md_info->file_func( path, output );
+    if( ret != 0 )
+        return( POLARSSL_ERR_MD_FILE_IO_ERROR + ret );
+
+    return( ret );
+#else
+    ((void) path);
+    ((void) output);
+
+    return( POLARSSL_ERR_MD_FEATURE_UNAVAILABLE );
+#endif /* POLARSSL_FS_IO */
+}
+
+int md_hmac_starts( md_context_t *ctx, const unsigned char *key, size_t keylen )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->hmac_starts_func( ctx->md_ctx, key, keylen );
+
+    return( 0 );
+}
+
+int md_hmac_update( md_context_t *ctx, const unsigned char *input, size_t ilen )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->hmac_update_func( ctx->md_ctx, input, ilen );
+
+    return( 0 );
+}
+
+int md_hmac_finish( md_context_t *ctx, unsigned char *output )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->hmac_finish_func( ctx->md_ctx, output );
+
+    return( 0 );
+}
+
+int md_hmac_reset( md_context_t *ctx )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->hmac_reset_func( ctx->md_ctx );
+
+    return( 0 );
+}
+
+int md_hmac( const md_info_t *md_info, const unsigned char *key, size_t keylen,
+                const unsigned char *input, size_t ilen,
+                unsigned char *output )
+{
+    if( md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    md_info->hmac_func( key, keylen, input, ilen, output );
+
+    return( 0 );
+}
+
+int md_process( md_context_t *ctx, const unsigned char *data )
+{
+    if( ctx == NULL || ctx->md_info == NULL )
+        return( POLARSSL_ERR_MD_BAD_INPUT_DATA );
+
+    ctx->md_info->process_func( ctx->md_ctx, data );
+
+    return( 0 );
+}
+
+#endif /* POLARSSL_MD_C */
+