php - aes加密c ++和php的不同结果
问题描述
我将在 CPP 和 PHP 之间实现 AES 加密。但是它们每个的结果彼此不同,因此它们无法相互解码。我使用 OpenSsl 库进行加密。
我的PHP代码:
$key = '1234567890123456';
$iv = '1234567890123456';
$enc = openssl_encrypt("hello wolrd", 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv);
$decrypted = openssl_decrypt($enc, 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv);
结果:��.�+'W�x�@�</p>
我的 cpp 代码:
int aes_encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key,
unsigned char *iv, unsigned char *ciphertext)
{
EVP_CIPHER_CTX *ctx;
int len;
int ciphertext_len;
/* Create and initialise the context */
if(!(ctx = EVP_CIPHER_CTX_new()))
handleErrors();
/*
* Initialise the encryption operation. IMPORTANT - ensure you use a key
* and IV size appropriate for your cipher
* In this example we are using 256 bit AES (i.e. a 256 bit key). The
* IV size for *most* modes is the same as the block size. For AES this
* is 128 bits
*/
if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, key, iv))
handleErrors();
/*
* Provide the message to be encrypted, and obtain the encrypted output.
* EVP_EncryptUpdate can be called multiple times if necessary
*/
if(1 != EVP_EncryptUpdate(ctx, ciphertext, &len, plaintext, plaintext_len))
handleErrors();
ciphertext_len = len;
/*
* Finalise the encryption. Further ciphertext bytes may be written at
* this stage.
*/
if(1 != EVP_EncryptFinal_ex(ctx, ciphertext + len, &len))
handleErrors();
ciphertext_len += len;
/* Clean up */
EVP_CIPHER_CTX_free(ctx);
return ciphertext_len;
}
int aes_decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key,
unsigned char *iv, unsigned char *plaintext)
{
EVP_CIPHER_CTX *ctx;
int len;
int plaintext_len;
/* Create and initialise the context */
if(!(ctx = EVP_CIPHER_CTX_new()))
handleErrors();
/*
* Initialise the decryption operation. IMPORTANT - ensure you use a key
* and IV size appropriate for your cipher
* In this example we are using 256 bit AES (i.e. a 256 bit key). The
* IV size for *most* modes is the same as the block size. For AES this
* is 128 bits
*/
if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, key, iv))
handleErrors();
/*
* Provide the message to be decrypted, and obtain the plaintext output.
* EVP_DecryptUpdate can be called multiple times if necessary.
*/
if(1 != EVP_DecryptUpdate(ctx, plaintext, &len, ciphertext, ciphertext_len))
handleErrors();
plaintext_len = len;
/*
* Finalise the decryption. Further plaintext bytes may be written at
* this stage.
*/
if(1 != EVP_DecryptFinal_ex(ctx, plaintext + len, &len))
handleErrors();
plaintext_len += len;
/* Clean up */
EVP_CIPHER_CTX_free(ctx);
return plaintext_len;
}
/* A 256 bit key */
unsigned char *key = (unsigned char*)"1234567890123456";
/* A 128 bit IV */
unsigned char *iv = (unsigned char*)"1234567890123456";
/* Message to be encrypted */
unsigned char *plaintext = (unsigned char*)"hello wolrd";
/* Buffer for ciphertext. Ensure the buffer is long enough for the
* ciphertext which may be longer than the plaintext, dependant on the
* algorithm and mode
*/
unsigned char ciphertext[256];
/* Buffer for the decrypted text */
unsigned char decryptedtext[256];
int decryptedtext_len, ciphertext_len;
printf("Plaintext is:\n%s\n", plaintext);
/* Encrypt the plaintext */
ciphertext_len = aes_encrypt(plaintext, strlen((const char*)plaintext), key, iv,
ciphertext);
/* Do something useful with the ciphertext here */
printf("Ciphertext is %d bytes long:\n", ciphertext_len);
BIO_dump_fp(stdout, (const char*)ciphertext, ciphertext_len);
/* Decrypt the ciphertext */
decryptedtext_len = aes_decrypt(ciphertext, ciphertext_len, key, iv,
decryptedtext);
/* Add a NULL terminator. We are expecting printable text */
decryptedtext[decryptedtext_len] = '\0';
结果:�'^{�'ی�u�E��@@�s
问题是什么?
解决方案
推荐阅读
- c# - MongoDB C# .NET Driver ASP.NET Core Unsupported Filter
- apache-spark - Spark 中的块和分区是同义词吗?
- vue.js - Vuejs 问题;如何绑定添加到 DOM 的新元素?
- java - 不能为 HashMap 中的每一个
- linux - 查找已编译的可执行文件的版本
- c# - 有人可以解释什么是外键,以及为什么使用它吗?
- java - Java:从当前 src 目录读取图像
- javascript - 粒子生成太快 - Phaser 3
- dns - dig NS 和 nslookup 提供过时的名称服务器;+trace 或 whois 是正确的
- pyspark - Pyspark,EOFError - 内存问题或损坏的数据?