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- Added additional (configurable) cipher block modes. AES-CTR, Camellia-CTR, XTEA-CBC

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This commit is contained in:
Paul Bakker
2011-04-19 14:29:23 +00:00
parent 34953bbcd3
commit b6ecaf5276
10 changed files with 551 additions and 3 deletions
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166
library/camellia.c
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@ -573,6 +573,7 @@ int camellia_crypt_cbc( camellia_context *ctx,
return( 0 );
}
#if defined(POLARSSL_CIPHER_MODE_CFB)
/*
* Camellia-CFB128 buffer encryption/decryption
*/
@ -617,6 +618,45 @@ int camellia_crypt_cfb128( camellia_context *ctx,
return( 0 );
}
#endif /* POLARSSL_CIPHER_MODE_CFB */
#if defined(POLARSSL_CIPHER_MODE_CTR)
/*
* Camellia-CTR buffer encryption/decryption
*/
int camellia_crypt_ctr( camellia_context *ctx,
int length,
int *nc_off,
unsigned char nonce_counter[16],
unsigned char stream_block[16],
const unsigned char *input,
unsigned char *output )
{
int c, n = *nc_off, i, cb;
while( length-- )
{
if( n == 0 ) {
camellia_crypt_ecb( ctx, CAMELLIA_ENCRYPT, nonce_counter, stream_block );
i = 15;
do {
nonce_counter[i]++;
cb = nonce_counter[i] == 0;
} while( i-- && cb );
}
c = *input++;
*output++ = (unsigned char)( c ^ stream_block[n] );
n = (n + 1) & 0x0F;
}
*nc_off = n;
return( 0 );
}
#endif /* POLARSSL_CIPHER_MODE_CTR */
#if defined(POLARSSL_SELF_TEST)
@ -752,6 +792,68 @@ static const unsigned char camellia_test_cbc_cipher[3][CAMELLIA_TESTS_CBC][16] =
}
};
#if defined(POLARSSL_CIPHER_MODE_CTR)
/*
* Camellia-CTR test vectors from:
*
* http://www.faqs.org/rfcs/rfc5528.html
*/
static const unsigned char camellia_test_ctr_key[3][16] =
{
{ 0xAE, 0x68, 0x52, 0xF8, 0x12, 0x10, 0x67, 0xCC,
0x4B, 0xF7, 0xA5, 0x76, 0x55, 0x77, 0xF3, 0x9E },
{ 0x7E, 0x24, 0x06, 0x78, 0x17, 0xFA, 0xE0, 0xD7,
0x43, 0xD6, 0xCE, 0x1F, 0x32, 0x53, 0x91, 0x63 },
{ 0x76, 0x91, 0xBE, 0x03, 0x5E, 0x50, 0x20, 0xA8,
0xAC, 0x6E, 0x61, 0x85, 0x29, 0xF9, 0xA0, 0xDC }
};
static const unsigned char camellia_test_ctr_nonce_counter[3][16] =
{
{ 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
{ 0x00, 0x6C, 0xB6, 0xDB, 0xC0, 0x54, 0x3B, 0x59,
0xDA, 0x48, 0xD9, 0x0B, 0x00, 0x00, 0x00, 0x01 },
{ 0x00, 0xE0, 0x01, 0x7B, 0x27, 0x77, 0x7F, 0x3F,
0x4A, 0x17, 0x86, 0xF0, 0x00, 0x00, 0x00, 0x01 }
};
static const unsigned char camellia_test_ctr_pt[3][48] =
{
{ 0x53, 0x69, 0x6E, 0x67, 0x6C, 0x65, 0x20, 0x62,
0x6C, 0x6F, 0x63, 0x6B, 0x20, 0x6D, 0x73, 0x67 },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F },
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
0x20, 0x21, 0x22, 0x23 }
};
static const unsigned char camellia_test_ctr_ct[3][48] =
{
{ 0xD0, 0x9D, 0xC2, 0x9A, 0x82, 0x14, 0x61, 0x9A,
0x20, 0x87, 0x7C, 0x76, 0xDB, 0x1F, 0x0B, 0x3F },
{ 0xDB, 0xF3, 0xC7, 0x8D, 0xC0, 0x83, 0x96, 0xD4,
0xDA, 0x7C, 0x90, 0x77, 0x65, 0xBB, 0xCB, 0x44,
0x2B, 0x8E, 0x8E, 0x0F, 0x31, 0xF0, 0xDC, 0xA7,
0x2C, 0x74, 0x17, 0xE3, 0x53, 0x60, 0xE0, 0x48 },
{ 0xB1, 0x9D, 0x1F, 0xCD, 0xCB, 0x75, 0xEB, 0x88,
0x2F, 0x84, 0x9C, 0xE2, 0x4D, 0x85, 0xCF, 0x73,
0x9C, 0xE6, 0x4B, 0x2B, 0x5C, 0x9D, 0x73, 0xF1,
0x4F, 0x2D, 0x5D, 0x9D, 0xCE, 0x98, 0x89, 0xCD,
0xDF, 0x50, 0x86, 0x96 }
};
static const int camellia_test_ctr_len[3] =
{ 16, 32, 36 };
#endif /* POLARSSL_CIPHER_MODE_CTR */
/*
* Checkup routine
@ -764,6 +866,12 @@ int camellia_self_test( int verbose )
unsigned char src[16];
unsigned char dst[16];
unsigned char iv[16];
#if defined(POLARSSL_CIPHER_MODE_CTR)
int offset, len;
unsigned char nonce_counter[16];
unsigned char stream_block[16];
#endif
camellia_context ctx;
memset( key, 0, 32 );
@ -859,6 +967,64 @@ int camellia_self_test( int verbose )
if( verbose != 0 )
printf( "\n" );
#if defined(POLARSSL_CIPHER_MODE_CTR)
/*
* CTR mode
*/
for( i = 0; i < 6; i++ )
{
u = i >> 1;
v = i & 1;
if( verbose != 0 )
printf( " CAMELLIA-CTR-128 (%s): ",
( v == CAMELLIA_DECRYPT ) ? "dec" : "enc" );
memcpy( nonce_counter, camellia_test_ctr_nonce_counter[u], 16 );
memcpy( key, camellia_test_ctr_key[u], 16 );
offset = 0;
camellia_setkey_enc( &ctx, key, 128 );
if( v == CAMELLIA_DECRYPT )
{
len = camellia_test_ctr_len[u];
memcpy( buf, camellia_test_ctr_ct[u], len );
camellia_crypt_ctr( &ctx, len, &offset, nonce_counter, stream_block, buf, buf );
if( memcmp( buf, camellia_test_ctr_pt[u], len ) != 0 )
{
if( verbose != 0 )
printf( "failed\n" );
return( 1 );
}
}
else
{
len = camellia_test_ctr_len[u];
memcpy( buf, camellia_test_ctr_pt[u], len );
camellia_crypt_ctr( &ctx, len, &offset, nonce_counter, stream_block, buf, buf );
if( memcmp( buf, camellia_test_ctr_ct[u], len ) != 0 )
{
if( verbose != 0 )
printf( "failed\n" );
return( 1 );
}
}
if( verbose != 0 )
printf( "passed\n" );
}
if( verbose != 0 )
printf( "\n" );
#endif /* POLARSSL_CIPHER_MODE_CTR */
return ( 0 );
}