C++ 哪个库可以方便的进行 AES 加密解密

Crypto++（也叫CryptoPP）是一款非常方便的C++加密库，可以用于AES加密和解密。以下是简单的示例代码：

AES加密：

#include <cryptopp/aes.h>
#include <cryptopp/modes.h>
#include <cryptopp/filters.h>

std::string plaintext = "Hello World!";
std::string key = "mysecretkey";
std::string iv = "myivalue";

CryptoPP::AES::Encryption aesEncryption((byte*)key.c_str(), CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Encryption cbcEncryption(aesEncryption, (byte*)iv.c_str());

std::string ciphertext;

CryptoPP::StreamTransformationFilter stfEncryptor(cbcEncryption, new CryptoPP::StringSink(ciphertext));
stfEncryptor.Put(reinterpret_cast<const unsigned char*>(plaintext.c_str()), plaintext.length()+1);
stfEncryptor.MessageEnd();

std::string encrypted = CryptoPP::base64_encode(reinterpret_cast<const unsigned char*>(ciphertext.c_str()), ciphertext.length());

AES解密：

#include <cryptopp/aes.h>
#include <cryptopp/modes.h>
#include <cryptopp/filters.h>

std::string encrypted = "encrypted";
std::string key = "mysecretkey";
std::string iv = "myivalue";

std::string ciphertext = CryptoPP::base64_decode(encrypted);
CryptoPP::AES::Decryption aesDecryption((byte*)key.c_str(), CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Decryption cbcDecryption(aesDecryption, (byte*)iv.c_str());

std::string decrypted;

CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, new CryptoPP::StringSink(decrypted));
stfDecryptor.Put(reinterpret_cast<const unsigned char*>(ciphertext.c_str()), ciphertext.size());
stfDecryptor.MessageEnd();

需要注意的是，Crypto++库需要自行安装并配置，但它提供了丰富的加密算法，使用方便，是一款广泛应用的C++加密库。