static void
cfb64_test(char key1[8], char iv[8], char in[23], char out[23])
{
unsigned char k1[8],
indata[23], outdata[23], outdata2[23], ansdata[23];
DES_key_schedule s1;
DES_cblock ivdata;
int num;
memcpy(k1, key1, 8);
memcpy(indata, in, 23);
memcpy(ansdata, out, 23);
DES_set_odd_parity(&k1);
DES_set_key_unchecked(&k1, &s1);
num = 0;
memcpy(ivdata, iv, 8);
DES_cfb64_encrypt(indata, outdata, 23, &s1, &ivdata, &num, 1);
if (memcmp(outdata, ansdata, sizeof(ansdata)) != 0)
errx(1, "cfb64: encrypt");
num = 0;
memcpy(ivdata, iv, 8);
DES_cfb64_encrypt(outdata, outdata2, 23, &s1, &ivdata, &num, 0);
if (memcmp(indata, outdata2, sizeof(outdata2)) != 0)
errx(1, "cfb64: decrypt");
}
static int cfb64_test(unsigned char *cfb_cipher)
{
DES_key_schedule ks;
int err = 0, i, n;
DES_set_key_checked(&cfb_key, &ks);
memcpy(cfb_tmp, cfb_iv, sizeof(cfb_iv));
n = 0;
DES_cfb64_encrypt(plain, cfb_buf1, 12, &ks, &cfb_tmp, &n, DES_ENCRYPT);
DES_cfb64_encrypt(&(plain[12]), &(cfb_buf1[12]), sizeof(plain) - 12, &ks,
&cfb_tmp, &n, DES_ENCRYPT);
if (memcmp(cfb_cipher, cfb_buf1, sizeof(plain)) != 0) {
err = 1;
printf("cfb_encrypt encrypt error\n");
for (i = 0; i < 24; i += 8)
printf("%s\n", pt(&(cfb_buf1[i])));
}
memcpy(cfb_tmp, cfb_iv, sizeof(cfb_iv));
n = 0;
DES_cfb64_encrypt(cfb_buf1, cfb_buf2, 17, &ks, &cfb_tmp, &n, DES_DECRYPT);
DES_cfb64_encrypt(&(cfb_buf1[17]), &(cfb_buf2[17]),
sizeof(plain) - 17, &ks, &cfb_tmp, &n, DES_DECRYPT);
if (memcmp(plain, cfb_buf2, sizeof(plain)) != 0) {
err = 1;
printf("cfb_encrypt decrypt error\n");
for (i = 0; i < 24; i += 8)
printf("%s\n", pt(&(cfb_buf2[i])));
}
return (err);
}
static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
return 1;
}
static int encrypt( char *key, char *msg, int size, char *res)
{
int n=0;
DES_cblock key2;
DES_key_schedule schedule;
/* Prepare the key for use with DES_cfb64_encrypt */
memcpy( key2, key,8);
DES_set_odd_parity( &key2 );
DES_set_key_checked( &key2, &schedule );
/* Encryption occurs here */
DES_cfb64_encrypt( ( unsigned char * ) msg, ( unsigned char * ) res,
size, &schedule, &key2, &n, DES_ENCRYPT );
return size;
}
char *
Decrypt( char *Key, char *Msg, int size)
{
static char* Res;
int n=0;
DES_cblock Key2;
DES_key_schedule schedule;
Res = ( char * ) malloc( size );
/* Prepare the key for use with DES_cfb64_encrypt */
memcpy( Key2, Key,8);
DES_set_odd_parity( &Key2 );
DES_set_key_checked( &Key2, &schedule );
/* Decryption occurs here */
DES_cfb64_encrypt( ( unsigned char * ) Msg, ( unsigned char * ) Res,
size, &schedule, &Key2, &n, DES_DECRYPT );
return (Res);
}
void _ossl_old_des_cfb64_encrypt(unsigned char *in, unsigned char *out, long length,
des_key_schedule schedule, _ossl_old_des_cblock *ivec, int *num, int enc)
{
DES_cfb64_encrypt(in, out, length, (DES_key_schedule *)schedule,
ivec, num, enc);
}