我有以下Java代码
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
public class AESEncryption
{
public static final String AES_TRANSFORMATION = "AES/ECB/PKCS5Padding";
public static final String AES_ALGORITHM = "AES";
public static final int ENC_BITS = 256;
public static final String CHARACTER_ENCODING = "UTF-8";
private static Cipher ENCRYPT_CIPHER;
private static Cipher DECRYPT_CIPHER;
private static KeyGenerator KEYGEN;
static
{
try
{
ENCRYPT_CIPHER = Cipher.getInstance(AES_TRANSFORMATION);
DECRYPT_CIPHER = Cipher.getInstance(AES_TRANSFORMATION);
KEYGEN = KeyGenerator.getInstance(AES_ALGORITHM);
KEYGEN.init(ENC_BITS);
}
catch(NoSuchAlgorithmException | NoSuchPaddingException e)
{
e.printStackTrace();
}
}
/**
* This method is used to encode bytes[] to base64 string.
*
* @param bytes
* : Bytes to encode
* @return : Encoded Base64 String
*/
private static String encodeBase64String(byte[] bytes)
{
return new String(java.util.Base64.getEncoder().encode(bytes));
}
/**
* This method is used to decode the base64 encoded string to byte[]
*
* @param stringData
* : String to decode
* @return : decoded String
* @throws UnsupportedEncodingException
*/
private static byte[] decodeBase64StringTOByte(String stringData) throws Exception
{
return java.util.Base64.getDecoder().decode(stringData.getBytes(CHARACTER_ENCODING));
}
/**
* This method is used to encrypt the string which is passed to it as byte[] and return base64 encoded
* encrypted String
* @param plainText
* : byte[]
* @param secret
* : Key using for encrypt
* @return : base64 encoded of encrypted string.
*
*/
private static String encryptEK(byte[] plainText, byte[] secret)
{
try
{
SecretKeySpec sk = new SecretKeySpec(secret, AES_ALGORITHM);
ENCRYPT_CIPHER.init(Cipher.ENCRYPT_MODE, sk);
return Base64.encodeBase64String(ENCRYPT_CIPHER.doFinal(plainText));
}
catch(Exception e)
{
e.printStackTrace();
return "";
}
}
/**
* This method is used to decrypt base64 encoded string using an AES 256 bit key.
*
* @param plainText
* : plain text to decrypt
* @param secret
* : key to decrypt
* @return : Decrypted String
* @throws IOException
* @throws InvalidKeyException
* @throws BadPaddingException
* @throws IllegalBlockSizeException
*/
public static byte[] decrypt(String plainText, byte[] secret)
throws InvalidKeyException, IOException, IllegalBlockSizeException,
BadPaddingException,Exception
{
SecretKeySpec sk = new SecretKeySpec(secret, AES_ALGORITHM);
DECRYPT_CIPHER.init(Cipher.DECRYPT_MODE, sk);
return DECRYPT_CIPHER.doFinal(Base64.decodeBase64(plainText));
}
public static void main(String args[])throws Exception
{
String encKey = "";
//client asp_secret
String asp_secret="";
byte[] enc_key = decrypt(encKey, asp_secret.getBytes());
String enc_asp_secret=encryptEK(asp_secret.getBytes(), decodeBase64StringTOByte(encodeBase64String(enc_key)));
System.out.println("asp secret encrypted:");
System.out.println(enc_asp_secret);
}
}
我碰巧在*中看到一个非常相似的帖子,没有答案
Cannot replicate an AES 256 encryption code from Java to PHP
标记为与另一个不同的问题重复.
我已经尝试了一些PHP代码,但是没有成功.
我会为此加点赏金,因为我尝试了很久了.
免责声明：使用与上述问题相同的代码段,因为这一代码段更加清晰.
添加我尝试过的PHP代码
class AtomAES {
public function encrypt($data = '', $key = NULL, $salt = "") {
if($key != NULL && $data != "" && $salt != ""){
$method = "AES-256-CBC";
//Converting Array to bytes
$iv = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
$chars = array_map("chr", $iv);
$IVbytes = join($chars);
$salt1 = mb_convert_encoding($salt, "UTF-8"); //Encoding to UTF-8
$key1 = mb_convert_encoding($key, "UTF-8"); //Encoding to UTF-8
//SecretKeyFactory Instance of PBKDF2WithHmacSHA1 Java Equivalent
$hash = openssl_pbkdf2($key1,$salt1,'256','65536', 'sha1');
$encrypted = openssl_encrypt($data, $method, $hash, OPENSSL_RAW_DATA, $IVbytes);
return bin2hex($encrypted);
}else{
return "String to encrypt, Salt and Key is required.";
}
}
public function decrypt($data="", $key = NULL, $salt = "") {
if($key != NULL && $data != "" && $salt != ""){
$dataEncypted = hex2bin($data);
$method = "AES-256-CBC";
//Converting Array to bytes
$iv = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
$chars = array_map("chr", $iv);
$IVbytes = join($chars);
$salt1 = mb_convert_encoding($salt, "UTF-8");//Encoding to UTF-8
$key1 = mb_convert_encoding($key, "UTF-8");//Encoding to UTF-8
//SecretKeyFactory Instance of PBKDF2WithHmacSHA1 Java Equivalent
$hash = openssl_pbkdf2($key1,$salt1,'256','65536', 'sha1');
$decrypted = openssl_decrypt($dataEncypted, $method, $hash, OPENSSL_RAW_DATA, $IVbytes);
return $decrypted;
}else{
return "Encrypted String to decrypt, Salt and Key is required.";
}
}
}
我无法使用此PHP解密使用Java生成的字符串
更新资料
这是我尝试使用上述Java代码进行加密的文本和密钥
Random generated text (asp_secret) : DTosv9G179D0cY1985Uh2eF6ND80C95L
Random generated Key used (encKey): VEMwcCYfFpsrXQVIFTDrA/2zP/5PYOY6JC1XEkEcLGSk/klt+HqHzGSr781Yznku
Encrypted string using above java code (enc_asp_secret): zAnTcjmAezfdzrWGixyfwmb8cM0otrsmwJ8+cNDs48Axh9hYgBtCJyeSE9tCvEBz
解决方法:
由于您对解密的字符串感兴趣,该加密的字符串中的加密是使用Java cryptoEK方法完成的,而解密应该使用PHP解密方法完成(反之亦然),因此我忽略了main方法的代码(这对我来说还不是很清楚),我专注于将Java方法(encryptEK和解密)移植到PHP方法.
Java cryptoEK方法将纯文本和密钥作为字节数组,使用AES(256-ECB)加密纯文本,并使用Base64编码对加密的文本进行编码.可能的PHP对应对象为：
public function encrypt($data = '', $key = NULL) {
if($key != NULL && $data != ""){
$method = "AES-256-ECB";
$encrypted = openssl_encrypt($data, $method, $key, OPENSSL_RAW_DATA);
$result = base64_encode($encrypted);
return $result;
}else{
return "String to encrypt, Key is required.";
}
}
注意：ECB模式不使用IV.
Java解密方法采用base64编码的字符串,将其解码然后解密.一个可能的PHP对应对象是
public function decrypt($data="", $key = NULL) {
if($key != NULL && $data != ""){
$method = "AES-256-ECB";
$dataDecoded = base64_decode($data);
$decrypted = openssl_decrypt($dataDecoded, $method, $key, OPENSSL_RAW_DATA);
return $decrypted;
}else{
return "Encrypted String to decrypt, Key is required.";
}
}
使用Java.util.Base64类的两个Java方法encodeBase64String和decodeBase64StringTOByte都不会被Java方法cryptoEK和解密使用.取而代之的是,使用了org.apache.commons.codec.binary.Base64-class的相应方法(例如https://commons.apache.org/proper/commons-codec/download_codec.cgi).因此,我不再对这两种方法进行任何进一步的注意.
在Java参考代码中,没有示例性地生成256位AES密钥,但是通常通过以下方式生成随机密钥：
KEYGEN.init(256);
SecretKey secretKey = KEYGEN.generateKey();
byte[] key = secretKey.getEncoded();
在PHP中,这是通过
$key = random_bytes(32);
对于双方的混合加密/解密测试(例如Java / PHP),必须使用相同的密钥.例如,此密钥由Java提供：
byte[] key = "This is a 256 bits = 32 byte key".getBytes(Charsets.UTF_8);
在PHP中：
$key = mb_convert_encoding("This is a 256 bits = 32 byte key", "UTF-8");
测试1：使用Java加密/解密(使用随机生成的密钥)
Plain text: The quick brown fox jumps over the lazy dog
Randomly generated key (hex): 20e9c191374b688e74e68ab6c969109e84c5c8e059d84f16f2beb07a7545cbc8
Encrypted text (base64 encoded): ZWOnSYErRxRRtqoVFTLVQMT329pOFHzN1gPDMuiZt0zFpt4n2TF/L54RB21zhVUa
Decrypted text: The quick brown fox jumps over the lazy dog
测试2：使用PHP加密/解密(使用随机生成的密钥)
Plain text: The quick brown fox jumps over the lazy dog
Randomly generated key (hex): eecd40c21e2a395f3aa3baeac19bfc8dcee04ea6e07f02dca7069397a487824f
Encrypted text (base64 encoded): 8wjusOED9TTXHjyEqvmGExLATVlvhg3hXEBHQ6Ku3Fos2OrYKbF+4XdO6cD9JJA5
Decrypted text: The quick brown fox jumps over the lazy dog
可能的加密和解密部分：
$key = random_bytes(32);
echo bin2hex($key);
$atomAES = new AtomAES();
$encrypt = $atomAES->encrypt("The quick brown fox jumps over the lazy dog", $key);
echo $encrypt;
$decrypt = $atomAES->decrypt($encrypt, $key);
echo $decrypt;
测试3：使用Java加密/使用PHP解密(使用上面的具体密钥)
Plain text: The quick brown fox jumps over the lazy dog
Encrypted text (base64 encoded) with Java: /XjXJc5dNk6p/h2HL8MVmmWG8Vd0Ud2x1QQWwmIQr9OG/PXZ0AzsIIMV1YmvMJho
Decrypted text with PHP: The quick brown fox jumps over the lazy dog
可能的解密部分：
$key = mb_convert_encoding("This is a 256 bits = 32 byte key", "UTF-8");
$atomAES = new AtomAES();
$decrypt = $atomAES->decrypt("/XjXJc5dNk6p/h2HL8MVmmWG8Vd0Ud2x1QQWwmIQr9OG/PXZ0AzsIIMV1YmvMJho", $key);
echo $decrypt;
测试4：使用PHP加密/使用Java解密(使用上面的具体密钥)
Plain text: The quick brown fox jumps over the lazy dog
Encrypted text (base64 encoded) with PHP: /XjXJc5dNk6p/h2HL8MVmmWG8Vd0Ud2x1QQWwmIQr9OG/PXZ0AzsIIMV1YmvMJho
Decrypted text with Java: The quick brown fox jumps over the lazy dog
可能的加密部分：
$key = mb_convert_encoding("This is a 256 bits = 32 byte key", "UTF-8");
$atomAES = new AtomAES();
$encrypt = $atomAES->encrypt("The quick brown fox jumps over the lazy dog", $key);
echo $encrypt;
编辑：
与主方法中的代码相对应的是(与示例结合)：
$encKey = mb_convert_encoding("VEMwcCYfFpsrXQVIFTDrA/2zP/5PYOY6JC1XEkEcLGSk/klt+HqHzGSr781Yznku", "UTF-8");
$asp_secret = mb_convert_encoding("DTosv9G179D0cY1985Uh2eF6ND80C95L", "UTF-8");
atomAES = new AtomAES();
$enc_key = $atomAES->decrypt($encKey, $asp_secret);
$enc_asp_secret = $atomAES->encrypt($asp_secret, base64_decode(base64_encode($enc_key)));
//$enc_asp_secret = $atomAES->encrypt($asp_secret, $enc_key);
echo "asp secret encrypted:\n".mb_convert_encoding($enc_asp_secret, "UTF-8")."\n";
注意：PHP表达式base64_decode(base64_encode($enc_key))等效于$enc_key,因此您也可以将其替换为当前注释掉的行.我编码的唯一原因是因为它也在Java代码中编码.这里的decodeBase64StringTOByte(encodeBase64String(enc_key)是等效的
到enc_key.这是因为一个方法与另一种方法相反.
如果运行上面的代码,则输出为
asp secret encrypted:
zAnTcjmAezfdzrWGixyfwmb8cM0otrsmwJ8+cNDs48Axh9hYgBtCJyeSE9tCvEBz
您也可以定义AtomAES类的第三个方法：
public function main(){
$encKey = mb_convert_encoding("VEMwcCYfFpsrXQVIFTDrA/2zP/5PYOY6JC1XEkEcLGSk/klt+HqHzGSr781Yznku", "UTF-8");
$asp_secret = mb_convert_encoding("DTosv9G179D0cY1985Uh2eF6ND80C95L", "UTF-8");
$enc_key = $this->decrypt($encKey, $asp_secret);
$enc_asp_secret = $this->encrypt($asp_secret, base64_decode(base64_encode($enc_key)));
//$enc_asp_secret = $this->encrypt($asp_secret, $enc_key);
echo "asp secret encrypted:\n".mb_convert_encoding($enc_asp_secret, "UTF-8")."\n";
}
可以用
$atomAES = new AtomAES();
$atomAES->main();