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/*
* NIST SP800-38D compliant GCM implementation
*
* Copyright (C) 2006-2012, Brainspark B.V.
*
* This file is part of PolarSSL (http://www.polarssl.org)
* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
*
* All rights reserved.
*
* 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.
*/
/*
* http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
*/
#include "polarssl/config.h"
#if defined(POLARSSL_GCM_C)
#include "polarssl/gcm.h"
/*
* 32-bit integer manipulation macros (big endian)
*/
#ifndef GET_UINT32_BE
#define GET_UINT32_BE(n,b,i) \
{ \
(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
| ( (uint32_t) (b)[(i) + 1] << 16 ) \
| ( (uint32_t) (b)[(i) + 2] << 8 ) \
| ( (uint32_t) (b)[(i) + 3] ); \
}
#endif
#ifndef PUT_UINT32_BE
#define PUT_UINT32_BE(n,b,i) \
{ \
(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
(b)[(i) + 3] = (unsigned char) ( (n) ); \
}
#endif
static void gcm_gen_table( gcm_context *ctx )
{
int i, j;
uint64_t hi, lo;
uint64_t vl, vh;
unsigned char h[16];
memset( h, 0, 16 );
aes_crypt_ecb( &ctx->aes_ctx, AES_ENCRYPT, h, h );
ctx->HH[0] = 0;
ctx->HL[0] = 0;
GET_UINT32_BE( hi, h, 0 );
GET_UINT32_BE( lo, h, 4 );
vh = (uint64_t) hi << 32 | lo;
GET_UINT32_BE( hi, h, 8 );
GET_UINT32_BE( lo, h, 12 );
vl = (uint64_t) hi << 32 | lo;
ctx->HL[8] = vl;
ctx->HH[8] = vh;
for( i = 4; i > 0; i >>= 1 )
{
uint32_t T = ( vl & 1 ) * 0xe1000000U;
vl = ( vh << 63 ) | ( vl >> 1 );
vh = ( vh >> 1 ) ^ ( (uint64_t) T << 32);
ctx->HL[i] = vl;
ctx->HH[i] = vh;
}
for (i = 2; i < 16; i <<= 1 )
{
uint64_t *HiL = ctx->HL + i, *HiH = ctx->HH + i;
vh = *HiH;
vl = *HiL;
for( j = 1; j < i; j++ )
{
HiH[j] = vh ^ ctx->HH[j];
HiL[j] = vl ^ ctx->HL[j];
}
}
}
int gcm_init( gcm_context *ctx, const unsigned char *key, unsigned int keysize )
{
int ret;
memset( ctx, 0, sizeof(gcm_context) );
if( ( ret = aes_setkey_enc( &ctx->aes_ctx, key, keysize ) ) != 0 )
return( ret );
gcm_gen_table( ctx );
return( 0 );
}
static const uint64_t last4[16] =
{
0x0000, 0x1c20, 0x3840, 0x2460,
0x7080, 0x6ca0, 0x48c0, 0x54e0,
0xe100, 0xfd20, 0xd940, 0xc560,
0x9180, 0x8da0, 0xa9c0, 0xb5e0
};
void gcm_mult( gcm_context *ctx, const unsigned char x[16], unsigned char output[16] )
{
int i = 0;
unsigned char z[16];
unsigned char lo, hi, rem;
uint64_t zh, zl;
memset( z, 0x00, 16 );
lo = x[15] & 0xf;
hi = x[15] >> 4;
zh = ctx->HH[lo];
zl = ctx->HL[lo];
for( i = 15; i >= 0; i-- )
{
lo = x[i] & 0xf;
hi = x[i] >> 4;
if( i != 15 )
{
rem = (unsigned char) zl & 0xf;
zl = ( zh << 60 ) | ( zl >> 4 );
zh = ( zh >> 4 );
zh ^= (uint64_t) last4[rem] << 48;
zh ^= ctx->HH[lo];
zl ^= ctx->HL[lo];
}
rem = (unsigned char) zl & 0xf;
zl = ( zh << 60 ) | ( zl >> 4 );
zh = ( zh >> 4 );
zh ^= (uint64_t) last4[rem] << 48;
zh ^= ctx->HH[hi];
zl ^= ctx->HL[hi];
}
PUT_UINT32_BE( zh >> 32, output, 0 );
PUT_UINT32_BE( zh, output, 4 );
PUT_UINT32_BE( zl >> 32, output, 8 );
PUT_UINT32_BE( zl, output, 12 );
}
int gcm_crypt_and_tag( gcm_context *ctx,
int mode,
size_t length,
const unsigned char *iv,
size_t iv_len,
const unsigned char *add,
size_t add_len,
const unsigned char *input,
unsigned char *output,
size_t tag_len,
unsigned char *tag )
{
unsigned char y[16];
unsigned char ectr[16];
unsigned char buf[16];
unsigned char work_buf[16];
size_t i;
const unsigned char *p;
unsigned char *out_p = output;
size_t use_len;
uint64_t orig_len = length * 8;
uint64_t orig_add_len = add_len * 8;
memset( y, 0x00, 16 );
memset( work_buf, 0x00, 16 );
memset( tag, 0x00, tag_len );
memset( buf, 0x00, 16 );
if( output > input && (size_t) ( output - input ) < length )
return( POLARSSL_ERR_GCM_BAD_INPUT );
if( iv_len == 12 )
{
memcpy( y, iv, iv_len );
y[15] = 1;
}
else
{
memset( work_buf, 0x00, 16 );
PUT_UINT32_BE( iv_len * 8, work_buf, 12 );
p = iv;
while( iv_len > 0 )
{
use_len = ( iv_len < 16 ) ? iv_len : 16;
for( i = 0; i < use_len; i++ )
y[i] ^= p[i];
gcm_mult( ctx, y, y );
iv_len -= use_len;
p += use_len;
}
for( i = 0; i < 16; i++ )
y[i] ^= work_buf[i];
gcm_mult( ctx, y, y );
}
aes_crypt_ecb( &ctx->aes_ctx, AES_ENCRYPT, y, ectr );
memcpy( tag, ectr, tag_len );
p = add;
while( add_len > 0 )
{
use_len = ( add_len < 16 ) ? add_len : 16;
for( i = 0; i < use_len; i++ )
buf[i] ^= p[i];
gcm_mult( ctx, buf, buf );
add_len -= use_len;
p += use_len;
}
p = input;
while( length > 0 )
{
use_len = ( length < 16 ) ? length : 16;
for( i = 16; i > 12; i-- )
if( ++y[i - 1] != 0 )
break;
aes_crypt_ecb( &ctx->aes_ctx, AES_ENCRYPT, y, ectr );
for( i = 0; i < use_len; i++ )
{
if( mode == GCM_DECRYPT )
buf[i] ^= p[i];
out_p[i] = ectr[i] ^ p[i];
if( mode == GCM_ENCRYPT )
buf[i] ^= out_p[i];
}
gcm_mult( ctx, buf, buf );
length -= use_len;
p += use_len;
out_p += use_len;
}
if( orig_len || orig_add_len )
{
memset( work_buf, 0x00, 16 );
PUT_UINT32_BE( ( orig_add_len >> 32 ), work_buf, 0 );
PUT_UINT32_BE( ( orig_add_len ), work_buf, 4 );
PUT_UINT32_BE( ( orig_len >> 32 ), work_buf, 8 );
PUT_UINT32_BE( ( orig_len ), work_buf, 12 );
for( i = 0; i < 16; i++ )
buf[i] ^= work_buf[i];
gcm_mult( ctx, buf, buf );
for( i = 0; i < tag_len; i++ )
tag[i] ^= buf[i];
}
return( 0 );
}
int gcm_auth_decrypt( gcm_context *ctx,
size_t length,
const unsigned char *iv,
size_t iv_len,
const unsigned char *add,
size_t add_len,
const unsigned char *tag,
size_t tag_len,
const unsigned char *input,
unsigned char *output )
{
unsigned char check_tag[16];
gcm_crypt_and_tag( ctx, GCM_DECRYPT, length, iv, iv_len, add, add_len, input, output, tag_len, check_tag );
if( memcmp( check_tag, tag, tag_len ) == 0 )
return( 0 );
memset( output, 0, length );
return( POLARSSL_ERR_GCM_AUTH_FAILED );
}
#if defined(POLARSSL_SELF_TEST)
#include <stdio.h>
/*
* GCM test vectors from:
*
* http://csrc.nist.gov/groups/STM/cavp/documents/mac/gcmtestvectors.zip
*/
#define MAX_TESTS 6
int key_index[MAX_TESTS] =
{ 0, 0, 1, 1, 1, 1 };
unsigned char key[MAX_TESTS][32] =
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08,
0xfe, 0xff, 0xe9, 0x92, 0x86, 0x65, 0x73, 0x1c,
0x6d, 0x6a, 0x8f, 0x94, 0x67, 0x30, 0x83, 0x08 },
};
size_t iv_len[MAX_TESTS] =
{ 12, 12, 12, 12, 8, 60 };
int iv_index[MAX_TESTS] =
{ 0, 0, 1, 1, 1, 2 };
unsigned char iv[MAX_TESTS][64] =
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 },
{ 0xca, 0xfe, 0xba, 0xbe, 0xfa, 0xce, 0xdb, 0xad,
0xde, 0xca, 0xf8, 0x88 },
{ 0x93, 0x13, 0x22, 0x5d, 0xf8, 0x84, 0x06, 0xe5,
0x55, 0x90, 0x9c, 0x5a, 0xff, 0x52, 0x69, 0xaa,
0x6a, 0x7a, 0x95, 0x38, 0x53, 0x4f, 0x7d, 0xa1,
0xe4, 0xc3, 0x03, 0xd2, 0xa3, 0x18, 0xa7, 0x28,
0xc3, 0xc0, 0xc9, 0x51, 0x56, 0x80, 0x95, 0x39,
0xfc, 0xf0, 0xe2, 0x42, 0x9a, 0x6b, 0x52, 0x54,
0x16, 0xae, 0xdb, 0xf5, 0xa0, 0xde, 0x6a, 0x57,
0xa6, 0x37, 0xb3, 0x9b },
};
size_t add_len[MAX_TESTS] =
{ 0, 0, 0, 20, 20, 20 };
int add_index[MAX_TESTS] =
{ 0, 0, 0, 1, 1, 1 };
unsigned char additional[MAX_TESTS][64] =
{
{ 0x00 },
{ 0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
0xfe, 0xed, 0xfa, 0xce, 0xde, 0xad, 0xbe, 0xef,
0xab, 0xad, 0xda, 0xd2 },
};
size_t pt_len[MAX_TESTS] =
{ 0, 16, 64, 60, 60, 60 };
int pt_index[MAX_TESTS] =
{ 0, 0, 1, 1, 1, 1 };
unsigned char pt[MAX_TESTS][64] =
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xd9, 0x31, 0x32, 0x25, 0xf8, 0x84, 0x06, 0xe5,
0xa5, 0x59, 0x09, 0xc5, 0xaf, 0xf5, 0x26, 0x9a,
0x86, 0xa7, 0xa9, 0x53, 0x15, 0x34, 0xf7, 0xda,
0x2e, 0x4c, 0x30, 0x3d, 0x8a, 0x31, 0x8a, 0x72,
0x1c, 0x3c, 0x0c, 0x95, 0x95, 0x68, 0x09, 0x53,
0x2f, 0xcf, 0x0e, 0x24, 0x49, 0xa6, 0xb5, 0x25,
0xb1, 0x6a, 0xed, 0xf5, 0xaa, 0x0d, 0xe6, 0x57,
0xba, 0x63, 0x7b, 0x39, 0x1a, 0xaf, 0xd2, 0x55 },
};
unsigned char ct[MAX_TESTS * 3][64] =
{
{ 0x00 },
{ 0x03, 0x88, 0xda, 0xce, 0x60, 0xb6, 0xa3, 0x92,
0xf3, 0x28, 0xc2, 0xb9, 0x71, 0xb2, 0xfe, 0x78 },
{ 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
0x3d, 0x58, 0xe0, 0x91, 0x47, 0x3f, 0x59, 0x85 },
{ 0x42, 0x83, 0x1e, 0xc2, 0x21, 0x77, 0x74, 0x24,
0x4b, 0x72, 0x21, 0xb7, 0x84, 0xd0, 0xd4, 0x9c,
0xe3, 0xaa, 0x21, 0x2f, 0x2c, 0x02, 0xa4, 0xe0,
0x35, 0xc1, 0x7e, 0x23, 0x29, 0xac, 0xa1, 0x2e,
0x21, 0xd5, 0x14, 0xb2, 0x54, 0x66, 0x93, 0x1c,
0x7d, 0x8f, 0x6a, 0x5a, 0xac, 0x84, 0xaa, 0x05,
0x1b, 0xa3, 0x0b, 0x39, 0x6a, 0x0a, 0xac, 0x97,
0x3d, 0x58, 0xe0, 0x91 },
{ 0x61, 0x35, 0x3b, 0x4c, 0x28, 0x06, 0x93, 0x4a,
0x77, 0x7f, 0xf5, 0x1f, 0xa2, 0x2a, 0x47, 0x55,
0x69, 0x9b, 0x2a, 0x71, 0x4f, 0xcd, 0xc6, 0xf8,
0x37, 0x66, 0xe5, 0xf9, 0x7b, 0x6c, 0x74, 0x23,
0x73, 0x80, 0x69, 0x00, 0xe4, 0x9f, 0x24, 0xb2,
0x2b, 0x09, 0x75, 0x44, 0xd4, 0x89, 0x6b, 0x42,
0x49, 0x89, 0xb5, 0xe1, 0xeb, 0xac, 0x0f, 0x07,
0xc2, 0x3f, 0x45, 0x98 },
{ 0x8c, 0xe2, 0x49, 0x98, 0x62, 0x56, 0x15, 0xb6,
0x03, 0xa0, 0x33, 0xac, 0xa1, 0x3f, 0xb8, 0x94,
0xbe, 0x91, 0x12, 0xa5, 0xc3, 0xa2, 0x11, 0xa8,
0xba, 0x26, 0x2a, 0x3c, 0xca, 0x7e, 0x2c, 0xa7,
0x01, 0xe4, 0xa9, 0xa4, 0xfb, 0xa4, 0x3c, 0x90,
0xcc, 0xdc, 0xb2, 0x81, 0xd4, 0x8c, 0x7c, 0x6f,
0xd6, 0x28, 0x75, 0xd2, 0xac, 0xa4, 0x17, 0x03,
0x4c, 0x34, 0xae, 0xe5 },
{ 0x00 },
{ 0x98, 0xe7, 0x24, 0x7c, 0x07, 0xf0, 0xfe, 0x41,
0x1c, 0x26, 0x7e, 0x43, 0x84, 0xb0, 0xf6, 0x00 },
{ 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
0xcc, 0xda, 0x27, 0x10, 0xac, 0xad, 0xe2, 0x56 },
{ 0x39, 0x80, 0xca, 0x0b, 0x3c, 0x00, 0xe8, 0x41,
0xeb, 0x06, 0xfa, 0xc4, 0x87, 0x2a, 0x27, 0x57,
0x85, 0x9e, 0x1c, 0xea, 0xa6, 0xef, 0xd9, 0x84,
0x62, 0x85, 0x93, 0xb4, 0x0c, 0xa1, 0xe1, 0x9c,
0x7d, 0x77, 0x3d, 0x00, 0xc1, 0x44, 0xc5, 0x25,
0xac, 0x61, 0x9d, 0x18, 0xc8, 0x4a, 0x3f, 0x47,
0x18, 0xe2, 0x44, 0x8b, 0x2f, 0xe3, 0x24, 0xd9,
0xcc, 0xda, 0x27, 0x10 },
{ 0x0f, 0x10, 0xf5, 0x99, 0xae, 0x14, 0xa1, 0x54,
0xed, 0x24, 0xb3, 0x6e, 0x25, 0x32, 0x4d, 0xb8,
0xc5, 0x66, 0x63, 0x2e, 0xf2, 0xbb, 0xb3, 0x4f,
0x83, 0x47, 0x28, 0x0f, 0xc4, 0x50, 0x70, 0x57,
0xfd, 0xdc, 0x29, 0xdf, 0x9a, 0x47, 0x1f, 0x75,
0xc6, 0x65, 0x41, 0xd4, 0xd4, 0xda, 0xd1, 0xc9,
0xe9, 0x3a, 0x19, 0xa5, 0x8e, 0x8b, 0x47, 0x3f,
0xa0, 0xf0, 0x62, 0xf7 },
{ 0xd2, 0x7e, 0x88, 0x68, 0x1c, 0xe3, 0x24, 0x3c,
0x48, 0x30, 0x16, 0x5a, 0x8f, 0xdc, 0xf9, 0xff,
0x1d, 0xe9, 0xa1, 0xd8, 0xe6, 0xb4, 0x47, 0xef,
0x6e, 0xf7, 0xb7, 0x98, 0x28, 0x66, 0x6e, 0x45,
0x81, 0xe7, 0x90, 0x12, 0xaf, 0x34, 0xdd, 0xd9,
0xe2, 0xf0, 0x37, 0x58, 0x9b, 0x29, 0x2d, 0xb3,
0xe6, 0x7c, 0x03, 0x67, 0x45, 0xfa, 0x22, 0xe7,
0xe9, 0xb7, 0x37, 0x3b },
{ 0x00 },
{ 0xce, 0xa7, 0x40, 0x3d, 0x4d, 0x60, 0x6b, 0x6e,
0x07, 0x4e, 0xc5, 0xd3, 0xba, 0xf3, 0x9d, 0x18 },
{ 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
0xbc, 0xc9, 0xf6, 0x62, 0x89, 0x80, 0x15, 0xad },
{ 0x52, 0x2d, 0xc1, 0xf0, 0x99, 0x56, 0x7d, 0x07,
0xf4, 0x7f, 0x37, 0xa3, 0x2a, 0x84, 0x42, 0x7d,
0x64, 0x3a, 0x8c, 0xdc, 0xbf, 0xe5, 0xc0, 0xc9,
0x75, 0x98, 0xa2, 0xbd, 0x25, 0x55, 0xd1, 0xaa,
0x8c, 0xb0, 0x8e, 0x48, 0x59, 0x0d, 0xbb, 0x3d,
0xa7, 0xb0, 0x8b, 0x10, 0x56, 0x82, 0x88, 0x38,
0xc5, 0xf6, 0x1e, 0x63, 0x93, 0xba, 0x7a, 0x0a,
0xbc, 0xc9, 0xf6, 0x62 },
{ 0xc3, 0x76, 0x2d, 0xf1, 0xca, 0x78, 0x7d, 0x32,
0xae, 0x47, 0xc1, 0x3b, 0xf1, 0x98, 0x44, 0xcb,
0xaf, 0x1a, 0xe1, 0x4d, 0x0b, 0x97, 0x6a, 0xfa,
0xc5, 0x2f, 0xf7, 0xd7, 0x9b, 0xba, 0x9d, 0xe0,
0xfe, 0xb5, 0x82, 0xd3, 0x39, 0x34, 0xa4, 0xf0,
0x95, 0x4c, 0xc2, 0x36, 0x3b, 0xc7, 0x3f, 0x78,
0x62, 0xac, 0x43, 0x0e, 0x64, 0xab, 0xe4, 0x99,
0xf4, 0x7c, 0x9b, 0x1f },
{ 0x5a, 0x8d, 0xef, 0x2f, 0x0c, 0x9e, 0x53, 0xf1,
0xf7, 0x5d, 0x78, 0x53, 0x65, 0x9e, 0x2a, 0x20,
0xee, 0xb2, 0xb2, 0x2a, 0xaf, 0xde, 0x64, 0x19,
0xa0, 0x58, 0xab, 0x4f, 0x6f, 0x74, 0x6b, 0xf4,
0x0f, 0xc0, 0xc3, 0xb7, 0x80, 0xf2, 0x44, 0x45,
0x2d, 0xa3, 0xeb, 0xf1, 0xc5, 0xd8, 0x2c, 0xde,
0xa2, 0x41, 0x89, 0x97, 0x20, 0x0e, 0xf8, 0x2e,
0x44, 0xae, 0x7e, 0x3f },
};
unsigned char tag[MAX_TESTS * 3][16] =
{
{ 0x58, 0xe2, 0xfc, 0xce, 0xfa, 0x7e, 0x30, 0x61,
0x36, 0x7f, 0x1d, 0x57, 0xa4, 0xe7, 0x45, 0x5a },
{ 0xab, 0x6e, 0x47, 0xd4, 0x2c, 0xec, 0x13, 0xbd,
0xf5, 0x3a, 0x67, 0xb2, 0x12, 0x57, 0xbd, 0xdf },
{ 0x4d, 0x5c, 0x2a, 0xf3, 0x27, 0xcd, 0x64, 0xa6,
0x2c, 0xf3, 0x5a, 0xbd, 0x2b, 0xa6, 0xfa, 0xb4 },
{ 0x5b, 0xc9, 0x4f, 0xbc, 0x32, 0x21, 0xa5, 0xdb,
0x94, 0xfa, 0xe9, 0x5a, 0xe7, 0x12, 0x1a, 0x47 },
{ 0x36, 0x12, 0xd2, 0xe7, 0x9e, 0x3b, 0x07, 0x85,
0x56, 0x1b, 0xe1, 0x4a, 0xac, 0xa2, 0xfc, 0xcb },
{ 0x61, 0x9c, 0xc5, 0xae, 0xff, 0xfe, 0x0b, 0xfa,
0x46, 0x2a, 0xf4, 0x3c, 0x16, 0x99, 0xd0, 0x50 },
{ 0xcd, 0x33, 0xb2, 0x8a, 0xc7, 0x73, 0xf7, 0x4b,
0xa0, 0x0e, 0xd1, 0xf3, 0x12, 0x57, 0x24, 0x35 },
{ 0x2f, 0xf5, 0x8d, 0x80, 0x03, 0x39, 0x27, 0xab,
0x8e, 0xf4, 0xd4, 0x58, 0x75, 0x14, 0xf0, 0xfb },
{ 0x99, 0x24, 0xa7, 0xc8, 0x58, 0x73, 0x36, 0xbf,
0xb1, 0x18, 0x02, 0x4d, 0xb8, 0x67, 0x4a, 0x14 },
{ 0x25, 0x19, 0x49, 0x8e, 0x80, 0xf1, 0x47, 0x8f,
0x37, 0xba, 0x55, 0xbd, 0x6d, 0x27, 0x61, 0x8c },
{ 0x65, 0xdc, 0xc5, 0x7f, 0xcf, 0x62, 0x3a, 0x24,
0x09, 0x4f, 0xcc, 0xa4, 0x0d, 0x35, 0x33, 0xf8 },
{ 0xdc, 0xf5, 0x66, 0xff, 0x29, 0x1c, 0x25, 0xbb,
0xb8, 0x56, 0x8f, 0xc3, 0xd3, 0x76, 0xa6, 0xd9 },
{ 0x53, 0x0f, 0x8a, 0xfb, 0xc7, 0x45, 0x36, 0xb9,
0xa9, 0x63, 0xb4, 0xf1, 0xc4, 0xcb, 0x73, 0x8b },
{ 0xd0, 0xd1, 0xc8, 0xa7, 0x99, 0x99, 0x6b, 0xf0,
0x26, 0x5b, 0x98, 0xb5, 0xd4, 0x8a, 0xb9, 0x19 },
{ 0xb0, 0x94, 0xda, 0xc5, 0xd9, 0x34, 0x71, 0xbd,
0xec, 0x1a, 0x50, 0x22, 0x70, 0xe3, 0xcc, 0x6c },
{ 0x76, 0xfc, 0x6e, 0xce, 0x0f, 0x4e, 0x17, 0x68,
0xcd, 0xdf, 0x88, 0x53, 0xbb, 0x2d, 0x55, 0x1b },
{ 0x3a, 0x33, 0x7d, 0xbf, 0x46, 0xa7, 0x92, 0xc4,
0x5e, 0x45, 0x49, 0x13, 0xfe, 0x2e, 0xa8, 0xf2 },
{ 0xa4, 0x4a, 0x82, 0x66, 0xee, 0x1c, 0x8e, 0xb0,
0xc8, 0xb5, 0xd4, 0xcf, 0x5a, 0xe9, 0xf1, 0x9a },
};
int gcm_self_test( int verbose )
{
gcm_context ctx;
unsigned char buf[64];
unsigned char tag_buf[16];
int i, j, ret;
for( j = 0; j < 3; j++ )
{
int key_len = 128 + 64 * j;
for( i = 0; i < MAX_TESTS; i++ )
{
printf( " AES-GCM-%3d #%d (%s): ", key_len, i, "enc" );
gcm_init( &ctx, key[key_index[i]], key_len );
ret = gcm_crypt_and_tag( &ctx, GCM_ENCRYPT,
pt_len[i],
iv[iv_index[i]], iv_len[i],
additional[add_index[i]], add_len[i],
pt[pt_index[i]], buf, 16, tag_buf );
if( ret != 0 ||
memcmp( buf, ct[j * 6 + i], pt_len[i] ) != 0 ||
memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
{
if( verbose != 0 )
printf( "failed\n" );
return( 1 );
}
if( verbose != 0 )
printf( "passed\n" );
printf( " AES-GCM-%3d #%d (%s): ", key_len, i, "dec" );
gcm_init( &ctx, key[key_index[i]], key_len );
ret = gcm_crypt_and_tag( &ctx, GCM_DECRYPT,
pt_len[i],
iv[iv_index[i]], iv_len[i],
additional[add_index[i]], add_len[i],
ct[j * 6 + i], buf, 16, tag_buf );
if( ret != 0 ||
memcmp( buf, pt[pt_index[i]], pt_len[i] ) != 0 ||
memcmp( tag_buf, tag[j * 6 + i], 16 ) != 0 )
{
if( verbose != 0 )
printf( "failed\n" );
return( 1 );
}
if( verbose != 0 )
printf( "passed\n" );
}
}
printf( "\n" );
return( 0 );
}
#endif
#endif