用AES加密算法加密,windows系统加解密正常,可在linux系统中加密正常,但linux上加密的数据在linux上解不出来,在window上也解不出来,问题原因已找到,并已修改,可原先在linux上产生的加密数据怎样才能解密?原始加密方法:
public static String encrypt(String content, String key) {
if (isEmpty(key)) {
return encrypt(content);
}
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(key.getBytes(encodFormat)));
byte[] bytes = kgen.generateKey().getEncoded();
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(bytes, "AES"));
byte[] result = cipher.doFinal(content.getBytes(encodFormat));
StringBuffer sb = new StringBuffer();
for (int i = 0; i < result.length; i++) {
String hex = Integer.toHexString(result[i] & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
原始解密方法:
/**
* 解密
*
* @param content
* @param securityKey
* @return
*/
public static String decrypt(String content, String securityKey) {
if (isEmpty(securityKey)) {
return decrypt(content);
}
byte[] bytes = new byte[content.length() / 2];
for (int i = 0; i < content.length() / 2; i++) {
int high = Integer.parseInt(content.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(content.substring(i * 2 + 1, i * 2 + 2), 16);
bytes[i] = (byte) (high * 16 + low);
}
try {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128, new SecureRandom(securityKey.getBytes()));
SecretKey secretKey = kgen.generateKey();
SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey.getEncoded(), "AES");
Cipher cipher = Cipher.getInstance("AES");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] result = cipher.doFinal(bytes);
return new String(result);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
现在已经找到原因了,修改后的代码已经能满足所有系统加解密,可是历史数据怎么破解?下边是修改后的代码:
package com.ecotech.loginservice.util;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.security.SecureRandom;
/**
* Created by kajya
* Date: 2019/06/04
*/
public class AESUtil {
/**
* 编码格式
*/
private static final String ENCODING = "UTF-8";
/**
* 加密算法
*/
public static final String KEY_ALGORITHM = "AES";
/**
* 签名算法
*/
public static final String SIGN_ALGORITHMS = "SHA1PRNG";
/**
* 加密
*
* @param content 待加密内容
* @param key 加密的密钥
* @return
*/
public static String encrypt(String content, String key) {
try {
KeyGenerator kgen = KeyGenerator.getInstance(KEY_ALGORITHM);
SecureRandom random = SecureRandom.getInstance(SIGN_ALGORITHMS);
random.setSeed(key.getBytes(ENCODING));
kgen.init(128, random);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, KEY_ALGORITHM);
Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
byte[] byteContent = content.getBytes(ENCODING);
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
byte[] byteRresult = cipher.doFinal(byteContent);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < byteRresult.length; i++) {
String hex = Integer.toHexString(byteRresult[i] & 0xFF);
if (hex.length() == 1) hex = '0' + hex;
sb.append(hex.toUpperCase());
}
return sb.toString();
} catch (Exception e) {
e.toString();
}
return null;
}
/**
* 解密
*
* @param content 待解密内容
* @param key 解密的密钥
* @return
*/
public static String decrypt(String content, String key) {
if (content.length() < 1) return null;
byte[] byteRresult = new byte[content.length() / 2];
for (int i = 0; i < content.length() / 2; i++) {
int high = Integer.parseInt(content.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(content.substring(i * 2 + 1, i * 2 + 2), 16);
byteRresult[i] = (byte) (high * 16 + low);
}
try {
KeyGenerator kgen = KeyGenerator.getInstance(KEY_ALGORITHM);
SecureRandom random = SecureRandom.getInstance(SIGN_ALGORITHMS);
random.setSeed(key.getBytes(ENCODING));
kgen.init(128, random);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec secretKeySpec = new SecretKeySpec(enCodeFormat, KEY_ALGORITHM);
Cipher cipher = Cipher.getInstance(KEY_ALGORITHM);
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] result = cipher.doFinal(byteRresult);
return new String(result, ENCODING);
} catch (Exception e) {
e.toString();
}
return null;
}
}
现在需要把原始加密方法加密的数据都解密出来,解密失败,linux系统加密产生的历史数据,还有办法解出来吗?
附一条测试数据:
key:E10ADC3949BA59ABBE56E057F20F883E
密文内容:3BC14F72DADE3A0107373BA8E9ECC377FDCF7F4ECE85698169E6E799FD54F3453E03D1AFA84AD963AD8A7D5E88C977FFC3E43902564EEFA29995640B2548E814F3B772C91D5EE710F9F84479C86F2EEB