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90 lines (72 loc) · 3 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "gandiva/encrypt_utils.h"
#include <stdexcept>
namespace gandiva {
GANDIVA_EXPORT
int32_t aes_encrypt(const char* plaintext, int32_t plaintext_len, const char* key,
unsigned char* cipher) {
int32_t cipher_len = 0;
int32_t len = 0;
EVP_CIPHER_CTX* en_ctx = EVP_CIPHER_CTX_new();
if (!en_ctx) {
throw std::runtime_error("could not create a new evp cipher ctx for encryption");
}
if (!EVP_EncryptInit_ex(en_ctx, EVP_aes_128_ecb(), nullptr,
reinterpret_cast<const unsigned char*>(key), nullptr)) {
throw std::runtime_error("could not initialize evp cipher ctx for encryption");
}
if (!EVP_EncryptUpdate(en_ctx, cipher, &len,
reinterpret_cast<const unsigned char*>(plaintext),
plaintext_len)) {
throw std::runtime_error("could not update evp cipher ctx for encryption");
}
cipher_len += len;
if (!EVP_EncryptFinal_ex(en_ctx, cipher + len, &len)) {
throw std::runtime_error("could not finish evp cipher ctx for encryption");
}
cipher_len += len;
EVP_CIPHER_CTX_free(en_ctx);
return cipher_len;
}
GANDIVA_EXPORT
int32_t aes_decrypt(const char* ciphertext, int32_t ciphertext_len, const char* key,
unsigned char* plaintext) {
int32_t plaintext_len = 0;
int32_t len = 0;
EVP_CIPHER_CTX* de_ctx = EVP_CIPHER_CTX_new();
if (!de_ctx) {
throw std::runtime_error("could not create a new evp cipher ctx for decryption");
}
if (!EVP_DecryptInit_ex(de_ctx, EVP_aes_128_ecb(), nullptr,
reinterpret_cast<const unsigned char*>(key), nullptr)) {
throw std::runtime_error("could not initialize evp cipher ctx for decryption");
}
if (!EVP_DecryptUpdate(de_ctx, plaintext, &len,
reinterpret_cast<const unsigned char*>(ciphertext),
ciphertext_len)) {
throw std::runtime_error("could not update evp cipher ctx for decryption");
}
plaintext_len += len;
if (!EVP_DecryptFinal_ex(de_ctx, plaintext + len, &len)) {
throw std::runtime_error("could not finish evp cipher ctx for decryption");
}
plaintext_len += len;
EVP_CIPHER_CTX_free(de_ctx);
return plaintext_len;
}
} // namespace gandiva