1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
6 * The library is free for all purposes without any express
13 LRW_MODE implementation, Decrypt blocks, Tom St Denis
20 @param ct The ciphertext
21 @param pt [out] The plaintext
22 @param len The length in octets, must be a multiple of 16
23 @param lrw The LRW state
25 int lrw_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_LRW *lrw)
29 LTC_ARGCHK(pt != NULL);
30 LTC_ARGCHK(ct != NULL);
31 LTC_ARGCHK(lrw != NULL);
33 if ((err = cipher_is_valid(lrw->cipher)) != CRYPT_OK) {
37 if (cipher_descriptor[lrw->cipher].accel_lrw_decrypt != NULL) {
38 return cipher_descriptor[lrw->cipher].accel_lrw_decrypt(ct, pt, len, lrw->IV, lrw->tweak, &lrw->key);
41 return lrw_process(ct, pt, len, LRW_DECRYPT, lrw);
47 /* ref: $Format:%D$ */
48 /* git commit: $Format:%H$ */
49 /* commit time: $Format:%ai$ */