AES/CBC/PKCS5Padding 解密报错
package com.example.demo.test;
import org.apache.tomcat.util.codec.binary.Base64;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.security.*;
import java.security.spec.AlgorithmParameterSpec;
public class AES {
public static IvParameterSpec getIv() throws UnsupportedEncodingException {
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv.getBytes("utf-8"));
return ivParameterSpec;
}
public static byte[] encrypt(String src, byte[] key) throws NoSuchAlgorithmException, NoSuchPaddingException,
InvalidKeyException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException, InvalidAlgorithmParameterException {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivParameterSpec);
byte[] cipherBytes = cipher.doFinal(src.getBytes(Charset.forName("utf-8")));
return cipherBytes;
}
public static byte[] decrypt(String src, byte[] key) throws Exception {
SecretKey secretKey = new SecretKeySpec(key, Algorithm);
IvParameterSpec ivParameterSpec = getIv();
Cipher cipher = Cipher.getInstance(AlgorithmProvider);
cipher.init(Cipher.DECRYPT_MODE, secretKey, ivParameterSpec);
byte[] hexBytes = hexStringToBytes(src);
byte[] plainBytes = cipher.doFinal(hexBytes);
return plainBytes;
}
public static String toKeyCode(String src) {
byte key[] = new byte[0];
String to = null;
try {
key = myKey.getBytes("utf-8");
to = new String(decrypt(src, key), "utf-8");
} catch (Exception e) {
e.printStackTrace();
}
return to;
}
public static String deKeyCode(String src) {
byte key[] = new byte[0];
String to = null;
try {
key = myKey.getBytes("utf-8");
to = byteToHexString(encrypt(src, key));
} catch (Exception e) {
e.printStackTrace();
}
return to;
}
/**
* 将byte转换为16进制字符串
*
* @param src
* @return
*/
public static String byteToHexString(byte[] src) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < src.length; i++) {
int v = src[i] & 0xff;
String hv = Integer.toHexString(v);
if (hv.length() < 2) {
sb.append("0");
}
sb.append(hv);
}
return sb.toString();
}
/**
* 将16进制字符串装换为byte数组
*
* @param hexString
* @return
*/
public static byte[] hexStringToBytes(String hexString) {
hexString = hexString.toUpperCase();
int length = hexString.length() / 2;
char[] hexChars = hexString.toCharArray();
byte[] b = new byte[length];
for (int i = 0; i < length; i++) {
int pos = i * 2;
b[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
}
return b;
}
private static byte charToByte(char c) {
return (byte) iv.indexOf(c);
}
private static String iv = "0102030405060708";//当模式是CBC的时候必须设置偏移量,偏移量字符串:自己随意定义，必须是16位 。
private static String Algorithm = "AES";
private static String AlgorithmProvider = "AES/CBC/PKCS5Padding"; //算法/模式/补码方式
private static String myKey = "e1bfc372ba5a24a3f9637857f115c81e"; //加密解密的秘钥key:自己随意定义。长度为n/8。 n代表的是多少bit
public static void main(String[] args) throws Exception {
String src="<response><process_result><return_code>0303</return_code><return_desc>缺少参数</return_desc><trade_no></trade_no></process_result></response>";
//加密
byte key[] = myKey.getBytes("utf-8");
String string = byteToHexString(encrypt(src, key));
System.out.println(string);
// String src2="1dc62b6cd7151b5d5c91af0c13861945533d96082c213d4bb525d703a26ed0a7f164d836b70f8931a454721a668c75049312daee7483fa67f045d44fd1ed017efd8575d13d7d2c43a36cefb7d9d2fbaed96ff174afcb25bffe3a7d3fd861a7c1f408094dd6574b904def1ebec558528916d10c5e18c2bb1c299331ab0b4938248fee999c88a5df9ba071d9b335f5b880fae31ce96f89623ba56815bb85b1d5a2";
//解密
byte[] decrypt = decrypt(string,myKey.getBytes("utf-8"));
System.out.println(new String(decrypt, "utf-8"));
}
}
试一试这个方法 https://blog.csdn.net/qq_38361800/article/details/101295265
可以参考代码
https://github.com/ouyangpeng/CryptionDemoOnKotlin/blob/master/src/com/oyp/crypt/aes/AESCryptUtil.kt
package com.oyp.crypt.aes
import com.oyp.crypt.encode.Base64Util
import javax.crypto.Cipher
import javax.crypto.spec.IvParameterSpec
import javax.crypto.spec.SecretKeySpec
/**
* 对称加密：AES
* 特点：可逆，加密速度快，可以加密大文件
*/
object AESCryptUtil {
//AES/CBC/NoPadding (128)
//AES 秘钥长度是16位，每位8个字节，所以是 16*8=128
// 算法/工作模式/填充模式
// AES/CBC/NoPadding (128)
// AES/CBC/PKCS5Padding(128)
// AES/ECB/NoPadding(128)
// AES/ECB/PKCS5Padding(128)
private val TRANSFORMATION = "AES/CBC/PKCS5Padding"
private val CRYPT_ALGORITHM = "AES"
private val cipher = Cipher.getInstance(TRANSFORMATION)
fun encrypt(originContent: String, aesKey: String): String {
initCipher(aesKey, Cipher.ENCRYPT_MODE)
// 3、Base64编码 加密后的内容
return Base64Util.encode(cipher.doFinal(originContent.toByteArray()))
}
fun decrypt(encryptContent: String, aesKey: String): String {
initCipher(aesKey, Cipher.DECRYPT_MODE)
// 3、Base64解码 解密后的内容
return String(cipher.doFinal(Base64Util.decode(encryptContent)))
}
private fun initCipher(aesKey: String, mode: Int) {
// 1、初始化AES相关的操作
val key: SecretKeySpec = initKey(aesKey)
// 2、初始化cipher对象(参数一：解密模式)
if (TRANSFORMATION.contains("CBC")) {
// CBC工作模式需要额外添加参数,否则报错：java.security.InvalidKeyException: Parameters missing
val iv = IvParameterSpec(aesKey.toByteArray())
cipher.init(mode, key, iv)
} else {
cipher.init(mode, key)
}
}
private fun initKey(aesKey: String): SecretKeySpec {
return SecretKeySpec(aesKey.toByteArray(), CRYPT_ALGORITHM)
}
}
fun main(args: Array<String>) {
// 原文
val originContent = "欧阳鹏的博客：http://blog.csdn.net/ouyang_peng"
// 自定义的aes的秘钥
val aesKey = "1234567812345678"
val aesEncryptContent = AESCryptUtil.encrypt(originContent, aesKey)
println("原文为：【${originContent}】 进行aes加密后的内容为：【${aesEncryptContent}】")
val aesDecryptContent = AESCryptUtil.decrypt(aesEncryptContent, aesKey)
println("秘文为：【${aesEncryptContent}】 进行aes解密后的内容为：【${aesDecryptContent}】")
}