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/* LibTomCrypt, modular cryptographic library -- Tom St Denis
*
* LibTomCrypt is a library that provides various cryptographic
* algorithms in a highly modular and flexible manner.
*
* The library is free for all purposes without any express
* guarantee it works.
*/
#include "tomcrypt.h"
/**
@file ccm_test.c
CCM support, process a block of memory, Tom St Denis
*/
#ifdef LTC_CCM_MODE
int ccm_test(void)
{
#ifndef LTC_TEST
return CRYPT_NOP;
#else
static const struct {
unsigned char key[16];
unsigned char nonce[16];
int noncelen;
unsigned char header[64];
int headerlen;
unsigned char pt[64];
int ptlen;
unsigned char ct[64];
unsigned char tag[16];
unsigned long taglen;
} tests[] = {
/* 13 byte nonce, 8 byte auth, 23 byte pt */
{
{ 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF },
{ 0x00, 0x00, 0x00, 0x03, 0x02, 0x01, 0x00, 0xA0,
0xA1, 0xA2, 0xA3, 0xA4, 0xA5 },
13,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 },
8,
{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E },
23,
{ 0x58, 0x8C, 0x97, 0x9A, 0x61, 0xC6, 0x63, 0xD2,
0xF0, 0x66, 0xD0, 0xC2, 0xC0, 0xF9, 0x89, 0x80,
0x6D, 0x5F, 0x6B, 0x61, 0xDA, 0xC3, 0x84 },
{ 0x17, 0xe8, 0xd1, 0x2c, 0xfd, 0xf9, 0x26, 0xe0 },
8
},
/* 13 byte nonce, 12 byte header, 19 byte pt */
{
{ 0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7,
0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF },
{ 0x00, 0x00, 0x00, 0x06, 0x05, 0x04, 0x03, 0xA0,
0xA1, 0xA2, 0xA3, 0xA4, 0xA5 },
13,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B },
12,
{ 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13,
0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B,
0x1C, 0x1D, 0x1E },
19,
{ 0xA2, 0x8C, 0x68, 0x65, 0x93, 0x9A, 0x9A, 0x79,
0xFA, 0xAA, 0x5C, 0x4C, 0x2A, 0x9D, 0x4A, 0x91,
0xCD, 0xAC, 0x8C },
{ 0x96, 0xC8, 0x61, 0xB9, 0xC9, 0xE6, 0x1E, 0xF1 },
8
},
/* supplied by Brian Gladman */
{
{ 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f },
{ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 },
7,
{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 },
8,
{ 0x20, 0x21, 0x22, 0x23 },
4,
{ 0x71, 0x62, 0x01, 0x5b },
{ 0x4d, 0xac, 0x25, 0x5d },
4
},
{
{ 0xc9, 0x7c, 0x1f, 0x67, 0xce, 0x37, 0x11, 0x85,
0x51, 0x4a, 0x8a, 0x19, 0xf2, 0xbd, 0xd5, 0x2f },
{ 0x00, 0x50, 0x30, 0xf1, 0x84, 0x44, 0x08, 0xb5,
0x03, 0x97, 0x76, 0xe7, 0x0c },
13,
{ 0x08, 0x40, 0x0f, 0xd2, 0xe1, 0x28, 0xa5, 0x7c,
0x50, 0x30, 0xf1, 0x84, 0x44, 0x08, 0xab, 0xae,
0xa5, 0xb8, 0xfc, 0xba, 0x00, 0x00 },
22,
{ 0xf8, 0xba, 0x1a, 0x55, 0xd0, 0x2f, 0x85, 0xae,
0x96, 0x7b, 0xb6, 0x2f, 0xb6, 0xcd, 0xa8, 0xeb,
0x7e, 0x78, 0xa0, 0x50 },
20,
{ 0xf3, 0xd0, 0xa2, 0xfe, 0x9a, 0x3d, 0xbf, 0x23,
0x42, 0xa6, 0x43, 0xe4, 0x32, 0x46, 0xe8, 0x0c,
0x3c, 0x04, 0xd0, 0x19 },
{ 0x78, 0x45, 0xce, 0x0b, 0x16, 0xf9, 0x76, 0x23 },
8
},
};
unsigned long taglen, x, y;
unsigned char buf[64], buf2[64], tag[16], tag2[16], tag3[16], zero[64];
int err, idx;
symmetric_key skey;
ccm_state ccm;
zeromem(zero, 64);
idx = find_cipher("aes");
if (idx == -1) {
idx = find_cipher("rijndael");
if (idx == -1) {
return CRYPT_NOP;
}
}
for (x = 0; x < (sizeof(tests)/sizeof(tests[0])); x++) {
for (y = 0; y < 2; y++) {
taglen = tests[x].taglen;
if (y == 0) {
if ((err = cipher_descriptor[idx].setup(tests[x].key, 16, 0, &skey)) != CRYPT_OK) {
return err;
}
if ((err = ccm_memory(idx,
tests[x].key, 16,
&skey,
tests[x].nonce, tests[x].noncelen,
tests[x].header, tests[x].headerlen,
(unsigned char*)tests[x].pt, tests[x].ptlen,
buf,
tag, &taglen, 0)) != CRYPT_OK) {
return err;
}
/* run a second time to make sure skey is not touched */
if ((err = ccm_memory(idx,
tests[x].key, 16,
&skey,
tests[x].nonce, tests[x].noncelen,
tests[x].header, tests[x].headerlen,
(unsigned char*)tests[x].pt, tests[x].ptlen,
buf,
tag, &taglen, 0)) != CRYPT_OK) {
return err;
}
} else {
if ((err = ccm_init(&ccm, idx, tests[x].key, 16, tests[x].ptlen, tests[x].taglen, tests[x].headerlen)) != CRYPT_OK) {
return err;
}
if ((err = ccm_add_nonce(&ccm, tests[x].nonce, tests[x].noncelen)) != CRYPT_OK) {
return err;
}
if ((err = ccm_add_aad(&ccm, tests[x].header, tests[x].headerlen)) != CRYPT_OK) {
return err;
}
if ((err = ccm_process(&ccm, (unsigned char*)tests[x].pt, tests[x].ptlen, buf, CCM_ENCRYPT)) != CRYPT_OK) {
return err;
}
if ((err = ccm_done(&ccm, tag, &taglen)) != CRYPT_OK) {
return err;
}
}
if (compare_testvector(buf, tests[x].ptlen, tests[x].ct, tests[x].ptlen, "CCM encrypt data", x)) {
return CRYPT_FAIL_TESTVECTOR;
}
if (compare_testvector(tag, taglen, tests[x].tag, tests[x].taglen, "CCM encrypt tag", x)) {
return CRYPT_FAIL_TESTVECTOR;
}
if (y == 0) {
XMEMCPY(tag3, tests[x].tag, tests[x].taglen);
taglen = tests[x].taglen;
if ((err = ccm_memory(idx,
tests[x].key, 16,
NULL,
tests[x].nonce, tests[x].noncelen,
tests[x].header, tests[x].headerlen,
buf2, tests[x].ptlen,
buf,
tag3, &taglen, 1 )) != CRYPT_OK) {
return err;
}
} else {
if ((err = ccm_init(&ccm, idx, tests[x].key, 16, tests[x].ptlen, tests[x].taglen, tests[x].headerlen)) != CRYPT_OK) {
return err;
}
if ((err = ccm_add_nonce(&ccm, tests[x].nonce, tests[x].noncelen)) != CRYPT_OK) {
return err;
}
if ((err = ccm_add_aad(&ccm, tests[x].header, tests[x].headerlen)) != CRYPT_OK) {
return err;
}
if ((err = ccm_process(&ccm, buf2, tests[x].ptlen, buf, CCM_DECRYPT)) != CRYPT_OK) {
return err;
}
if ((err = ccm_done(&ccm, tag2, &taglen)) != CRYPT_OK) {
return err;
}
}
if (compare_testvector(buf2, tests[x].ptlen, tests[x].pt, tests[x].ptlen, "CCM decrypt data", x)) {
return CRYPT_FAIL_TESTVECTOR;
}
if (y == 0) {
/* check if decryption with the wrong tag does not reveal the plaintext */
XMEMCPY(tag3, tests[x].tag, tests[x].taglen);
tag3[0] ^= 0xff; /* set the tag to the wrong value */
taglen = tests[x].taglen;
if ((err = ccm_memory(idx,
tests[x].key, 16,
NULL,
tests[x].nonce, tests[x].noncelen,
tests[x].header, tests[x].headerlen,
buf2, tests[x].ptlen,
buf,
tag3, &taglen, 1 )) != CRYPT_ERROR) {
return CRYPT_FAIL_TESTVECTOR;
}
if (compare_testvector(buf2, tests[x].ptlen, zero, tests[x].ptlen, "CCM decrypt wrong tag", x)) {
return CRYPT_FAIL_TESTVECTOR;
}
} else {
if (compare_testvector(tag2, taglen, tests[x].tag, tests[x].taglen, "CCM decrypt tag", x)) {
return CRYPT_FAIL_TESTVECTOR;
}
}
if (y == 0) {
cipher_descriptor[idx].done(&skey);
}
}
}
return CRYPT_OK;
#endif
}
#endif
/* ref: $Format:%D$ */
/* git commit: $Format:%H$ */
/* commit time: $Format:%ai$ */
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