CMAC support for cipher with 64bit blocks (DES/3DES)
This commit is contained in:
Brian Murray
Simon Butcher
parent
5a8c004f79
commit
7c6476c330
2 changed files with 442 additions and 87 deletions
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@ -37,8 +37,8 @@ extern "C" {
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*/
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typedef struct {
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mbedtls_cipher_context_t cipher_ctx; /*!< cipher context used */
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unsigned char K1[16];
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unsigned char K2[16];
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unsigned char* K1;
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unsigned char* K2;
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}
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mbedtls_cmac_context;
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@ -108,9 +108,8 @@ int mbedtls_cmac_verify( mbedtls_cmac_context *ctx,
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/**
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* \brief AES-CMAC-128-PRF
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* TODO: add reference to the standard
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* See RFC
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*
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* \param ctx CMAC context
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* \param key PRF key
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* \param key_len PRF key length
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* \param input buffer holding the input data
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@ -120,8 +119,7 @@ int mbedtls_cmac_verify( mbedtls_cmac_context *ctx,
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*
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* \return 0 if successful
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*/
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int mbedtls_aes_cmac_prf_128( mbedtls_cmac_context *ctx,
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const unsigned char *key, size_t key_len,
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int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_len,
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const unsigned char *input, size_t in_len,
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unsigned char *tag );
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519
library/cmac.c
519
library/cmac.c
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@ -60,24 +60,39 @@ void mbedtls_cmac_init( mbedtls_cmac_context *ctx )
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}
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/*
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* Multiply by u in GF(2^128)
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* Multiplication by u in the Galois field of GF(2^n)
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*
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* As explained in the paper, this can be achieved as
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* As explained in the paper, this can computed:
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* If MSB(p) = 0, then p = (p << 1)
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* If MSB(p) = 1, then p = (p << 1) ^ Rb
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* with Rb = 0x87
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* If MSB(p) = 1, then p = (p << 1) ^ R_n
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* with R_64 = 0x1B and R_128 = 0x87
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*
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* Input and output MUST not point to the same buffer
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* Block size must be 8 byes or 16 bytes.
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*/
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static void cmac_multiply_by_u( unsigned char *output,
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const unsigned char *input )
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static int cmac_multiply_by_u( unsigned char *output,
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const unsigned char *input,
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size_t blocksize)
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{
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const unsigned char Rb = 0x87; /* block size 16 only */
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unsigned char mask;
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unsigned char overflow = 0;
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int i;
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for( i = 15; i >= 0; i-- )
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const unsigned char R_128 = 0x87;
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const unsigned char R_64 = 0x1B;
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unsigned char R_n, mask;
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unsigned char overflow = 0x00;
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int i, starting_index;
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starting_index = blocksize -1;
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if(blocksize == 16){
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R_n = R_128;
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} else if(blocksize == 8) {
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R_n = R_64;
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} else {
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return MBEDTLS_ERR_CMAC_BAD_INPUT;
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}
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for( i = starting_index; i >= 0; i-- )
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{
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output[i] = input[i] << 1 | overflow;
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overflow = input[i] >> 7;
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@ -96,7 +111,8 @@ static void cmac_multiply_by_u( unsigned char *output,
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#pragma warning( pop )
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#endif
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output[15] ^= Rb & mask;
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output[starting_index] ^= R_n & mask;
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return 0;
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}
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/*
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@ -104,27 +120,35 @@ static void cmac_multiply_by_u( unsigned char *output,
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*/
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static int cmac_generate_subkeys( mbedtls_cmac_context *ctx )
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{
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int ret;
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unsigned char L[16];
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size_t olen;
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int ret, keybytes;
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unsigned char *L;
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size_t olen, block_size;
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ret = 0;
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block_size = ctx->cipher_ctx.cipher_info->block_size;
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L = mbedtls_calloc(block_size, sizeof(unsigned char));
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/* Calculate Ek(0) */
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memset( L, 0, 16 );
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memset( L, 0, block_size );
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if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx,
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L, 16, L, &olen ) ) != 0 )
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L, block_size, L, &olen ) ) != 0 )
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{
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return( ret );
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goto exit;
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}
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/*
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* Generate K1 and K2
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*/
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cmac_multiply_by_u( ctx->K1, L );
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cmac_multiply_by_u( ctx->K2, ctx->K1 );
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if( ( ret = cmac_multiply_by_u( ctx->K1, L , block_size) ) != 0 )
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goto exit;
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if( ( cmac_multiply_by_u( ctx->K2, ctx->K1 , block_size) ) != 0 )
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goto exit;
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mbedtls_zeroize( L, sizeof( L ) );
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return( 0 );
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exit:
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mbedtls_zeroize( L, sizeof( L ) );
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free(L);
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return ret;
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}
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/*
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@ -135,7 +159,7 @@ int mbedtls_cmac_setkey( mbedtls_cmac_context *ctx,
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const unsigned char *key,
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unsigned int keybits )
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{
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int ret;
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int ret, blocksize;
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const mbedtls_cipher_info_t *cipher_info;
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cipher_info = mbedtls_cipher_info_from_values( cipher, keybits,
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@ -143,8 +167,8 @@ int mbedtls_cmac_setkey( mbedtls_cmac_context *ctx,
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if( cipher_info == NULL )
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return( MBEDTLS_ERR_CMAC_BAD_INPUT );
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if( cipher_info->block_size != 16 )
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return( MBEDTLS_ERR_CMAC_BAD_INPUT );
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ctx->K1 = mbedtls_calloc( cipher_info->block_size, sizeof( unsigned char ) );
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ctx->K2 = mbedtls_calloc( cipher_info->block_size, sizeof( unsigned char ) );
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mbedtls_cipher_free( &ctx->cipher_ctx );
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@ -165,8 +189,15 @@ int mbedtls_cmac_setkey( mbedtls_cmac_context *ctx,
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*/
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void mbedtls_cmac_free( mbedtls_cmac_context *ctx )
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{
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int block_size;
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block_size = ctx->cipher_ctx.cipher_info->block_size;
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mbedtls_cipher_free( &ctx->cipher_ctx );
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mbedtls_zeroize( ctx, sizeof( mbedtls_cmac_context ) );
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mbedtls_zeroize(ctx->K1, block_size * sizeof( unsigned char ) );
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mbedtls_zeroize(ctx->K2, block_size * sizeof( unsigned char ) );
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mbedtls_free( ctx->K1 );
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mbedtls_free( ctx->K2 );
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}
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/*
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@ -176,16 +207,17 @@ void mbedtls_cmac_free( mbedtls_cmac_context *ctx )
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* CBC and we use ECB mode, and anyway we need to XOR K1 or K2 in addition.
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*/
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static void cmac_pad( unsigned char padded_block[16],
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size_t padded_block_len,
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const unsigned char *last_block,
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size_t length )
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size_t last_block_len )
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{
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size_t j;
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for( j = 0; j < 16; j++ )
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for( j = 0; j < padded_block_len; j++ )
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{
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if( j < length )
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if( j < last_block_len )
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padded_block[j] = last_block[j];
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else if( j == length )
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else if( j == last_block_len )
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padded_block[j] = 0x80;
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else
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padded_block[j] = 0x00;
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@ -193,11 +225,11 @@ static void cmac_pad( unsigned char padded_block[16],
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}
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/*
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* XOR 128-bit
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* XOR Block
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* Here, macro results in smaller compiled code than static inline function
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*/
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#define XOR_128( o, i1, i2 ) \
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for( i = 0; i < 16; i++ ) \
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#define XOR_BLOCK( o, i1, i2 ) \
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for( i = 0; i < block_size; i++ ) \
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( o )[i] = ( i1 )[i] ^ ( i2 )[i];
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/*
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@ -205,9 +237,10 @@ static void cmac_pad( unsigned char padded_block[16],
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*/
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#define UPDATE_CMAC( x ) \
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do { \
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XOR_128( state, ( x ), state ); \
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XOR_BLOCK( state, ( x ), state ); \
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if( ( ret = mbedtls_cipher_update( &ctx->cipher_ctx, \
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state, 16, state, &olen ) ) != 0 ) \
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state, block_size, \
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state, &olen ) ) != 0 ) \
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return( ret ); \
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} while( 0 )
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@ -219,50 +252,61 @@ int mbedtls_cmac_generate( mbedtls_cmac_context *ctx,
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unsigned char *tag, size_t tag_len )
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{
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unsigned char state[16];
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unsigned char M_last[16];
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unsigned char *state;
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unsigned char *M_last;
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int n, i, j, ret, needs_padding;
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size_t olen;
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size_t olen, block_size;
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ret = 0;
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block_size = ctx->cipher_ctx.cipher_info->block_size;
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state = mbedtls_calloc(block_size, sizeof(unsigned char) );
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M_last = mbedtls_calloc(block_size, sizeof(unsigned char) );
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/*
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* Check in_len requirements: SP800-38B A
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* 4 is a worst case bottom limit
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*/
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if( tag_len < 4 || tag_len > 16 || tag_len % 2 != 0 )
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if( tag_len < 4 || tag_len > block_size || tag_len % 2 != 0 )
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return( MBEDTLS_ERR_CMAC_BAD_INPUT );
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if( in_len == 0 )
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needs_padding = 1;
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else
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needs_padding = in_len % 16 != 0;
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needs_padding = in_len % block_size != 0;
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n = in_len / 16 + needs_padding;
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n = in_len / block_size + needs_padding;
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/* Calculate last block */
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if( needs_padding )
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{
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cmac_pad( M_last, input + 16 * ( n - 1 ), in_len % 16 );
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XOR_128( M_last, M_last, ctx->K2 );
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cmac_pad( M_last, block_size, input + block_size * ( n - 1 ), in_len % block_size );
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XOR_BLOCK( M_last, M_last, ctx->K2 );
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}
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else
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{
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/* Last block is complete block */
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XOR_128( M_last, input + 16 * ( n - 1 ), ctx->K1 );
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XOR_BLOCK( M_last, input + block_size * ( n - 1 ), ctx->K1 );
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}
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memset( state, 0, 16 );
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memset( state, 0, block_size );
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for( j = 0; j < n - 1; j++ )
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UPDATE_CMAC( input + 16 * j );
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UPDATE_CMAC( input + block_size * j );
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UPDATE_CMAC( M_last );
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memcpy( tag, state, 16 );
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memcpy( tag, state, block_size );
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return( 0 );
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exit:
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free(state);
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free(M_last);
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return( ret );
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}
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#undef XOR_128
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#undef XOR_BLOCK
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#undef UPDATE_CMAC
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/*
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@ -273,14 +317,17 @@ int mbedtls_cmac_verify( mbedtls_cmac_context *ctx,
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const unsigned char *tag, size_t tag_len )
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{
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int ret;
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unsigned char check_tag[16];
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unsigned char *check_tag;
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unsigned char i;
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int diff;
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check_tag = mbedtls_calloc(ctx->cipher_ctx.cipher_info->block_size,
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sizeof(unsigned char) );
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if( ( ret = mbedtls_cmac_generate( ctx, input, in_len,
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check_tag, tag_len ) ) != 0 )
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{
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return ret;
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goto exit;
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}
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/* Check tag in "constant-time" */
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@ -288,25 +335,29 @@ int mbedtls_cmac_verify( mbedtls_cmac_context *ctx,
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diff |= tag[i] ^ check_tag[i];
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if( diff != 0 )
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return( MBEDTLS_ERR_CMAC_VERIFY_FAILED );
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ret = MBEDTLS_ERR_CMAC_VERIFY_FAILED;
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goto exit;
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return( 0 );
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exit:
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free(check_tag);
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return ret;
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}
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/*
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* PRF based on CMAC with AES-128
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* TODO: add reference to the standard
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* TODO: do we need to take a cmac_context as an argument here?
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* See RFC 4615
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*/
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int mbedtls_aes_cmac_prf_128( mbedtls_cmac_context *ctx,
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const unsigned char *key, size_t key_length,
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int mbedtls_aes_cmac_prf_128( const unsigned char *key, size_t key_length,
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const unsigned char *input, size_t in_len,
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unsigned char *tag )
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{
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int ret;
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mbedtls_cmac_context ctx;
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unsigned char zero_key[16];
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unsigned char int_key[16];
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mbedtls_cmac_init(&ctx);
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if( key_length == 16 )
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{
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/* Use key as is */
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@ -322,21 +373,27 @@ int mbedtls_aes_cmac_prf_128( mbedtls_cmac_context *ctx,
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ret = mbedtls_cmac_setkey( &zero_ctx, MBEDTLS_CIPHER_ID_AES,
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zero_key, 8 * sizeof zero_key );
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if( ret != 0 )
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return( ret );
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goto exit;
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ret = mbedtls_cmac_generate( &zero_ctx, key, key_length, int_key, 16 );
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if( ret != 0 )
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return( ret );
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goto exit;
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}
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ret = mbedtls_cmac_setkey( ctx, MBEDTLS_CIPHER_ID_AES,
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ret = mbedtls_cmac_setkey( &ctx, MBEDTLS_CIPHER_ID_AES,
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int_key, 8 * sizeof int_key );
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if( ret != 0 )
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return( ret );
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goto exit;
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mbedtls_zeroize( int_key, sizeof( int_key ) );
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return( mbedtls_cmac_generate( ctx, input, in_len, tag, 16 ) );
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ret = mbedtls_cmac_generate( &ctx, input, in_len, tag, 16 );
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exit:
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mbedtls_cmac_free(&ctx);
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return( ret );
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}
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#if defined(MBEDTLS_SELF_TEST) && defined(MBEDTLS_AES_C)
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@ -345,30 +402,116 @@ int mbedtls_aes_cmac_prf_128( mbedtls_cmac_context *ctx,
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* http://csrc.nist.gov/publications/nistpubs/800-38B/Updated_CMAC_Examples.pdf
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*/
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#define NB_CMAC_TESTS 4
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#define NB_CMAC_TESTS_AES_128 4
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#define NB_CMAC_TESTS_AES_192 4
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#define NB_CMAC_TESTS_AES_256 4
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#define NB_CMAC_TESTS_3DES 4
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#define NB_PRF_TESTS 3
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/* Key */
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static const unsigned char key[] = {
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/* AES 128 Key */
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static const unsigned char aes_128_key[] = {
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0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,
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0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c
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};
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/* AES 192 Key */
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static const unsigned char aes_192_key[] = {
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0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52,
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0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,
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0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b
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};
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/* AES 256 Key */
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static const unsigned char aes_256_key[] = {
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0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe,
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0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
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0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7,
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0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4
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};
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/* 3DES 112 bit key */
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static const unsigned char des3_2key_key[] = {
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0x4c, 0xf1, 0x51, 0x34, 0xa2, 0x85, 0x0d, 0xd5,
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0x8a, 0x3d, 0x10, 0xba, 0x80, 0x57, 0x0d, 0x38,
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0x4c, 0xf1, 0x51, 0x34, 0xa2, 0x85, 0x0d, 0xd5
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};
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/* 3DES 168 bit key */
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static const unsigned char des3_3key_key[] = {
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0x8a, 0xa8, 0x3b, 0xf8, 0xcb, 0xda, 0x10, 0x62,
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0x0b, 0xc1, 0xbf, 0x19, 0xfb, 0xb6, 0xcd, 0x58,
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0xbc, 0x31, 0x3d, 0x4a, 0x37, 0x1c, 0xa8, 0xb5
|
||||
};
|
||||
|
||||
|
||||
|
||||
/* Assume we don't need to test Ek0 as this is a function of the cipher */
|
||||
|
||||
/* Subkey K1 */
|
||||
static const unsigned char K1[] = {
|
||||
static const unsigned char aes_128_k1[] = {
|
||||
0xfb, 0xee, 0xd6, 0x18, 0x35, 0x71, 0x33, 0x66,
|
||||
0x7c, 0x85, 0xe0, 0x8f, 0x72, 0x36, 0xa8, 0xde
|
||||
};
|
||||
|
||||
/* Subkey K2 */
|
||||
static const unsigned char K2[] = {
|
||||
static const unsigned char aes_128_k2[] = {
|
||||
0xf7, 0xdd, 0xac, 0x30, 0x6a, 0xe2, 0x66, 0xcc,
|
||||
0xf9, 0x0b, 0xc1, 0x1e, 0xe4, 0x6d, 0x51, 0x3b
|
||||
};
|
||||
|
||||
/* All Messages */
|
||||
|
||||
|
||||
/* Subkey K1 */
|
||||
static const unsigned char aes_192_k1[] = {
|
||||
0x44, 0x8a, 0x5b, 0x1c, 0x93, 0x51, 0x4b, 0x27,
|
||||
0x3e, 0xe6, 0x43, 0x9d, 0xd4, 0xda, 0xa2, 0x96
|
||||
};
|
||||
|
||||
/* Subkey K2 */
|
||||
static const unsigned char aes_192_k2[] = {
|
||||
0x89, 0x14, 0xb6, 0x39, 0x26, 0xa2, 0x96, 0x4e,
|
||||
0x7d, 0xcc, 0x87, 0x3b, 0xa9, 0xb5, 0x45, 0x2c
|
||||
};
|
||||
|
||||
/* Subkey K1 */
|
||||
static const unsigned char aes_256_k1[] = {
|
||||
0xca, 0xd1, 0xed, 0x03, 0x29, 0x9e, 0xed, 0xac,
|
||||
0x2e, 0x9a, 0x99, 0x80, 0x86, 0x21, 0x50, 0x2f
|
||||
};
|
||||
|
||||
/* Subkey K2 */
|
||||
static const unsigned char aes_256_k2[] = {
|
||||
0x95, 0xa3, 0xda, 0x06, 0x53, 0x3d, 0xdb, 0x58,
|
||||
0x5d, 0x35, 0x33, 0x01, 0x0c, 0x42, 0xa0, 0xd9
|
||||
};
|
||||
|
||||
|
||||
/* Subkey K1 */
|
||||
static const unsigned char des3_2key_k1[] = {
|
||||
0x8e, 0xcf, 0x37, 0x3e, 0xd7, 0x1a, 0xfa, 0xef
|
||||
};
|
||||
|
||||
/* Subkey K2 */
|
||||
static const unsigned char des3_2key_k2[] = {
|
||||
0x1d, 0x9e, 0x6e, 0x7d, 0xae, 0x35, 0xf5, 0xc5
|
||||
};
|
||||
|
||||
/* Subkey K1 */
|
||||
static const unsigned char des3_3key_k1[] = {
|
||||
0x91, 0x98, 0xe9, 0xd3, 0x14, 0xe6, 0x53, 0x5f
|
||||
};
|
||||
|
||||
/* Subkey K2 */
|
||||
static const unsigned char des3_3key_k2[] = {
|
||||
0x23, 0x31, 0xd3, 0xa6, 0x29, 0xcc, 0xa6, 0xa5
|
||||
};
|
||||
|
||||
/* Assume we don't need to test Ek0 as this is a function of the cipher */
|
||||
|
||||
|
||||
|
||||
/* All Messages are the same. The difference is the length */
|
||||
static const unsigned char M[] = {
|
||||
0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96,
|
||||
0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
|
||||
|
|
@ -380,7 +523,7 @@ static const unsigned char M[] = {
|
|||
0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10
|
||||
};
|
||||
|
||||
static const unsigned char T[NB_CMAC_TESTS][16] = {
|
||||
static const unsigned char T_128[NB_CMAC_TESTS_3DES][16] = {
|
||||
{
|
||||
0xbb, 0x1d, 0x69, 0x29, 0xe9, 0x59, 0x37, 0x28,
|
||||
0x7f, 0xa3, 0x7d, 0x12, 0x9b, 0x75, 0x67, 0x46
|
||||
|
|
@ -400,13 +543,91 @@ static const unsigned char T[NB_CMAC_TESTS][16] = {
|
|||
};
|
||||
|
||||
/* Sizes in bytes */
|
||||
static const size_t Mlen[NB_CMAC_TESTS] = {
|
||||
static const size_t Mlen[NB_CMAC_TESTS_AES_192] = {
|
||||
0,
|
||||
16,
|
||||
40,
|
||||
64
|
||||
};
|
||||
|
||||
static const size_t Mlen_3des[NB_CMAC_TESTS_AES_192] = {
|
||||
0,
|
||||
8,
|
||||
20,
|
||||
32
|
||||
};
|
||||
|
||||
|
||||
|
||||
static const unsigned char T_256[NB_CMAC_TESTS_AES_192][16] = {
|
||||
{
|
||||
0x02, 0x89, 0x62, 0xf6, 0x1b, 0x7b, 0xf8, 0x9e,
|
||||
0xfc, 0x6b, 0x55, 0x1f, 0x46, 0x67, 0xd9, 0x83
|
||||
},
|
||||
{
|
||||
0x28, 0xa7, 0x02, 0x3f, 0x45, 0x2e, 0x8f, 0x82,
|
||||
0xbd, 0x4b, 0xf2, 0x8d, 0x8c, 0x37, 0xc3, 0x5c
|
||||
},
|
||||
{
|
||||
0xaa, 0xf3, 0xd8, 0xf1, 0xde, 0x56, 0x40, 0xc2,
|
||||
0x32, 0xf5, 0xb1, 0x69, 0xb9, 0xc9, 0x11, 0xe6
|
||||
},
|
||||
{
|
||||
0xe1, 0x99, 0x21, 0x90, 0x54, 0x9f, 0x6e, 0xd5,
|
||||
0x69, 0x6a, 0x2c, 0x05, 0x6c, 0x31, 0x54, 0x10
|
||||
}
|
||||
};
|
||||
|
||||
static const unsigned char T_192[NB_CMAC_TESTS_AES_192][16] = {
|
||||
{
|
||||
0xd1, 0x7d, 0xdf, 0x46, 0xad, 0xaa, 0xcd, 0xe5,
|
||||
0x31, 0xca, 0xc4, 0x83, 0xde, 0x7a, 0x93, 0x67
|
||||
},
|
||||
{
|
||||
0x9e, 0x99, 0xa7, 0xbf, 0x31, 0xe7, 0x10, 0x90,
|
||||
0x06, 0x62, 0xf6, 0x5e, 0x61, 0x7c, 0x51, 0x84
|
||||
},
|
||||
{
|
||||
0x8a, 0x1d, 0xe5, 0xbe, 0x2e, 0xb3, 0x1a, 0xad,
|
||||
0x08, 0x9a, 0x82, 0xe6, 0xee, 0x90, 0x8b, 0x0e
|
||||
},
|
||||
{
|
||||
0xa1, 0xd5, 0xdf, 0x0e, 0xed, 0x79, 0x0f, 0x79,
|
||||
0x4d, 0x77, 0x58, 0x96, 0x59, 0xf3, 0x9a, 0x11
|
||||
}
|
||||
};
|
||||
|
||||
static const unsigned char T_3des_2key[NB_CMAC_TESTS_AES_192][16] = {
|
||||
{
|
||||
0xbd, 0x2e, 0xbf, 0x9a, 0x3b, 0xa0, 0x03, 0x61
|
||||
},
|
||||
{
|
||||
0x4f, 0xf2, 0xab, 0x81, 0x3c, 0x53, 0xce, 0x83
|
||||
},
|
||||
{
|
||||
0x62, 0xdd, 0x1b, 0x47, 0x19, 0x02, 0xbd, 0x4e
|
||||
},
|
||||
{
|
||||
0x31, 0xb1, 0xe4, 0x31, 0xda, 0xbc, 0x4e, 0xb8
|
||||
}
|
||||
};
|
||||
|
||||
static const unsigned char T_3des_3key[NB_CMAC_TESTS_AES_192][16] = {
|
||||
{
|
||||
0xb7, 0xa6, 0x88, 0xe1, 0x22, 0xff, 0xaf, 0x95
|
||||
},
|
||||
{
|
||||
0x8e, 0x8f, 0x29, 0x31, 0x36, 0x28, 0x37, 0x97
|
||||
},
|
||||
{
|
||||
0x74, 0x3d, 0xdb, 0xe0, 0xce, 0x2d, 0xc2, 0xed
|
||||
},
|
||||
{
|
||||
0x33, 0xe6, 0xb1, 0x09, 0x24, 0x00, 0xea, 0xe5
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/* PRF K */
|
||||
static const unsigned char PRFK[] = {
|
||||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
||||
|
|
@ -453,7 +674,8 @@ int mbedtls_cmac_self_test( int verbose )
|
|||
|
||||
mbedtls_cmac_init( &ctx );
|
||||
|
||||
if( mbedtls_cmac_setkey( &ctx, MBEDTLS_CIPHER_ID_AES, key, 8 * sizeof key ) != 0 )
|
||||
// AES 128 bit key
|
||||
if( mbedtls_cmac_setkey( &ctx, MBEDTLS_CIPHER_ID_AES, aes_128_key, 8 * sizeof(aes_128_key) ) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: setup failed\n" );
|
||||
|
|
@ -461,8 +683,8 @@ int mbedtls_cmac_self_test( int verbose )
|
|||
return( 1 );
|
||||
}
|
||||
|
||||
if( ( memcmp( ctx.K1, K1, 16 ) != 0 ) ||
|
||||
( memcmp( ctx.K2, K2, 16 ) != 0 ) )
|
||||
if( ( memcmp( ctx.K1, aes_128_k1, 16 ) != 0 ) ||
|
||||
( memcmp( ctx.K2, aes_128_k2, 16 ) != 0 ) )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: subkey generation failed\n" );
|
||||
|
|
@ -470,13 +692,13 @@ int mbedtls_cmac_self_test( int verbose )
|
|||
return( 1 );
|
||||
}
|
||||
|
||||
for( i = 0; i < NB_CMAC_TESTS; i++ )
|
||||
for( i = 0; i < NB_CMAC_TESTS_AES_128; i++ )
|
||||
{
|
||||
mbedtls_printf( " AES-128-CMAC #%u: ", i );
|
||||
|
||||
ret = mbedtls_cmac_generate( &ctx, M, Mlen[i], tag, 16 );
|
||||
if( ret != 0 ||
|
||||
memcmp( tag, T[i], 16 ) != 0 )
|
||||
memcmp( tag, T_128[i], 16 ) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
|
@ -484,7 +706,7 @@ int mbedtls_cmac_self_test( int verbose )
|
|||
return( 1 );
|
||||
}
|
||||
|
||||
ret = mbedtls_cmac_verify( &ctx, M, Mlen[i], T[i], 16 );
|
||||
ret = mbedtls_cmac_verify( &ctx, M, Mlen[i], T_128[i], 16 );
|
||||
if( ret != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
|
|
@ -497,14 +719,130 @@ int mbedtls_cmac_self_test( int verbose )
|
|||
mbedtls_printf( "passed\n" );
|
||||
}
|
||||
|
||||
for( i = 0; i < NB_PRF_TESTS; i++ )
|
||||
// AES 192 bit key
|
||||
if( mbedtls_cmac_setkey( &ctx, MBEDTLS_CIPHER_ID_AES, aes_192_key, 8 * sizeof(aes_192_key) ) != 0 )
|
||||
{
|
||||
mbedtls_printf( " AES-CMAC-128-PRF #%u: ", i );
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: setup failed\n" );
|
||||
|
||||
mbedtls_aes_cmac_prf_128( &ctx, PRFK, PRFKlen[i], PRFM, 20, tag );
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
if( ( memcmp( ctx.K1, aes_192_k1, 16 ) != 0 ) ||
|
||||
( memcmp( ctx.K2, aes_192_k2, 16 ) != 0 ) )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: subkey generation failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
for( i = 0; i < NB_CMAC_TESTS_AES_192; i++ )
|
||||
{
|
||||
mbedtls_printf( " AES-192-CMAC #%u: ", i );
|
||||
|
||||
ret = mbedtls_cmac_generate( &ctx, M, Mlen[i], tag, 16 );
|
||||
if( ret != 0 ||
|
||||
memcmp( tag, PRFT[i], 16 ) != 0 )
|
||||
memcmp( tag, T_192[i], 16 ) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
ret = mbedtls_cmac_verify( &ctx, M, Mlen[i], T_192[i], 16 );
|
||||
if( ret != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "passed\n" );
|
||||
}
|
||||
|
||||
// 3DES 2 key bit key
|
||||
if( (ret = mbedtls_cmac_setkey( &ctx, MBEDTLS_CIPHER_ID_3DES, des3_2key_key, 8 * sizeof(des3_2key_key) )) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: setup failed %i\n", ret);
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
if( ( memcmp( ctx.K1, des3_2key_k1, 8 ) != 0 ) ||
|
||||
( memcmp( ctx.K2, des3_2key_k2, 8 ) != 0 ) )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: subkey generation failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
for( i = 0; i < NB_CMAC_TESTS_3DES; i++ )
|
||||
{
|
||||
mbedtls_printf( " DES-112-CMAC #%u: ", i );
|
||||
|
||||
ret = mbedtls_cmac_generate( &ctx, M, Mlen_3des[i], tag, 8 );
|
||||
if( ret != 0 ||
|
||||
memcmp( tag, T_3des_2key[i], 8 ) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
ret = mbedtls_cmac_verify( &ctx, M, Mlen_3des[i], T_3des_2key[i], 8 );
|
||||
if( ret != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "passed\n" );
|
||||
}
|
||||
|
||||
// 3DES 3 key
|
||||
if( (ret = mbedtls_cmac_setkey( &ctx, MBEDTLS_CIPHER_ID_3DES, des3_3key_key, 8 * sizeof(des3_3key_key) )) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: setup failed %i\n", ret);
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
if( ( memcmp( ctx.K1, des3_3key_k1, 8 ) != 0 ) ||
|
||||
( memcmp( ctx.K2, des3_3key_k2, 8 ) != 0 ) )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( " CMAC: subkey generation failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
for( i = 0; i < NB_CMAC_TESTS_3DES; i++ )
|
||||
{
|
||||
mbedtls_printf( " DES-168-CMAC #%u: ", i );
|
||||
|
||||
ret = mbedtls_cmac_generate( &ctx, M, Mlen_3des[i], tag, 8 );
|
||||
if( ret != 0 ||
|
||||
memcmp( tag, T_3des_3key[i], 8 ) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
||||
return( 1 );
|
||||
}
|
||||
|
||||
ret = mbedtls_cmac_verify( &ctx, M, Mlen_3des[i], T_3des_3key[i], 8 );
|
||||
if( ret != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
|
@ -518,6 +856,25 @@ int mbedtls_cmac_self_test( int verbose )
|
|||
|
||||
mbedtls_cmac_free( &ctx );
|
||||
|
||||
for( i = 0; i < NB_PRF_TESTS; i++ )
|
||||
{
|
||||
mbedtls_printf( " AES-CMAC-128-PRF #%u: ", i );
|
||||
|
||||
mbedtls_aes_cmac_prf_128( PRFK, PRFKlen[i], PRFM, 20, tag );
|
||||
|
||||
if( ret != 0 ||
|
||||
memcmp( tag, PRFT[i], 16 ) != 0 )
|
||||
{
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "failed\n" );
|
||||
|
||||
return( 1 );
|
||||
} else if( verbose != 0 )
|
||||
{
|
||||
mbedtls_printf( "passed\n" );
|
||||
}
|
||||
}
|
||||
|
||||
if( verbose != 0 )
|
||||
mbedtls_printf( "\n" );
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue