static int tnepres_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keylen)
{
u8 rev_key[SERPENT_MAX_KEY_SIZE];
int i;
for (i = 0; i < keylen; ++i)
rev_key[keylen - i - 1] = key[i];
return serpent_setkey(tfm, rev_key, keylen);
}
static int tnepres_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
{
u8 rev_key[SERPENT_MAX_KEY_SIZE];
int i;
if ((keylen < SERPENT_MIN_KEY_SIZE)
|| (keylen > SERPENT_MAX_KEY_SIZE)) {
*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
return -EINVAL;
}
for (i = 0; i < keylen; ++i)
rev_key[keylen - i - 1] = key[i];
return serpent_setkey(ctx, rev_key, keylen, flags);
}
int main()
{
uint32_t expkey[SERPENT_EXPKEY_WORDS];
uint8_t check[16];
int i, j;
/* test serpent with 128key key */
for (i = 0; i < table128_num; i++) {
serpent_setkey(expkey, table128[i].key, 16);
/* encryption test */
serpent_encrypt(check, table128[i].plain, expkey);
if (memcmp(check, table128[i].enc, 16) != 0) {
fprintf(stderr, "serpent-128 encrypt test %d failed\n", i+1);
return 1;
}
/* encrypt 99 times more */
for (j = 0; j < 99; j++)
serpent_encrypt(check, check, expkey);
if (memcmp(check, table128[i].enc100, 16) != 0) {
fprintf(stderr, "serpent-128 100x encrypt test %d failed\n", i+1);
return 1;
}
/* encrypt 900 times more */
for (j = 0; j < 900; j++)
serpent_encrypt(check, check, expkey);
if (memcmp(check, table128[i].enc1000, 16) != 0) {
fprintf(stderr, "serpent-128 1000x encrypt test %d failed\n", i+1);
return 1;
}
}
/* test serpent with 256bit key */
for (i = 0; i < table256_num; i++) {
serpent_setkey(expkey, table256[i].key, 32);
/* encrypt test */
serpent_encrypt(check, table256[i].plain, expkey);
if (memcmp(check, table256[i].enc, 16) != 0) {
fprintf(stderr, "serpent-256 encrypt test %d failed\n", i+1);
return 1;
}
/* 100x encrypt test */
for (j = 0; j < 99; j++)
serpent_encrypt(check, check, expkey);
if (memcmp(check, table256[i].enc100, 16) != 0) {
fprintf(stderr, "serpent-256 100x encrypt test %d failed\n", i+1);
return 1;
}
/* 1000x encrypt test */
for (j = 0; j < 900; j++)
serpent_encrypt(check, check, expkey);
if (memcmp(check, table256[i].enc1000, 16) != 0) {
fprintf(stderr, "serpent-256 1000x encrypt test %d failed\n", i+1);
return 1;
}
}
return 0;
}
