krb5_error_code krb5int_aes_decrypt(krb5_key key, const krb5_data *ivec, krb5_crypto_iov *data, size_t num_data) { int ret = 0; int nblocks = 0; size_t input_length, i; for (i = 0, input_length = 0; i < num_data; i++) { krb5_crypto_iov *iov = &data[i]; if (ENCRYPT_IOV(iov)) input_length += iov->data.length; } nblocks = (input_length + BLOCK_SIZE - 1) / BLOCK_SIZE; if (nblocks == 1) { if (input_length != BLOCK_SIZE) return KRB5_BAD_MSIZE; ret = cbc_decr(key, ivec, data, num_data); } else if (nblocks > 1) { ret = cts_decr(key, ivec, data, num_data, input_length); } return ret; }
krb5_error_code krb5int_aes_decrypt(krb5_key key, const krb5_data *ivec, krb5_crypto_iov *data, size_t num_data) { int ret = 0; size_t input_length, nblocks; input_length = iov_total_length(data, num_data, FALSE); nblocks = (input_length + BLOCK_SIZE - 1) / BLOCK_SIZE; if (nblocks == 1) { if (input_length != BLOCK_SIZE) return KRB5_BAD_MSIZE; ret = cbc_decr(key, ivec, data, num_data); } else if (nblocks > 1) { ret = cts_decr(key, ivec, data, num_data, input_length); } return ret; }