- if ((err = cbc_encrypt(pt, ct, ptlen, &cbc)) != CRYPT_OK)
- return err;
- if ((err = cbc_done(&cbc)) != CRYPT_OK)
- return err;
- if ((err = unregister_cipher(&aes_desc)) != CRYPT_OK)
+ err= cbc_encrypt(pt, ct, tlen, &cbc);
+ (void)cbc_done(&cbc);
+ return err;
+}
+
+static unsigned long tom_decrypt(void *key, int keylen, void *iv,
+ void *ct, void *pt, int tlen)
+{
+ symmetric_CBC cbc;
+ int index, err;
+
+ if ((index = register_cipher(&aes_desc)) == -1)
+ return CRYPT_INVALID_CIPHER;
+ if ((err = cbc_start(index, iv, key, keylen, 0, &cbc)) != CRYPT_OK)