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- 摘要：微信小程序解密建议使用1.6及以上的环境使用maven下载jar包org.bouncycastlebcprov-jdk15on1.55加密类代码importorg.bouncycastle.jce.provider.BouncyCastleProvider;importorg.bouncycastle.util.Arrays;importjavax.crypto.Cipher;importjavax.crypto.NoSuchPaddingException;importja
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微信小程序解密
建议使用1.6及以上的环境
使用maven下载jar包
org.bouncycastle bcprov-jdk15on 1.55加密类代码
import org.bouncycastle.jce.provider.BouncyCastleProvider;import org.bouncycastle.util.Arrays;import javax.crypto.Cipher;import javax.crypto.NoSuchPaddingException;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import java.security.Key;import java.security.NoSuchAlgorithmException;import java.security.NoSuchProviderException;import java.security.Security;/*** Created by wind on 2016/12/24.*//**** @author ngh* AES128 算法** CBC 模式** PKCS7Padding 填充模式** CBC模式需要添加一个参数iv--对称解密算法初始向量 iv** 介于java 不支持PKCS7Padding,只支持PKCS5Padding 但是PKCS7Padding 和 PKCS5Padding 没有什么区别* 要实现在java端用PKCS7Padding填充,需要用到bouncycastle组件来实现*/public class Pkcs7Encoder { // 算法名称static final String KEY_ALGORITHM = "AES";// 加解密算法/模式/填充方式static final String algorithmStr = "AES/CBC/PKCS7Padding";private static Key key;private static Cipher cipher;boolean isInited = false;//默认对称解密算法初始向量 ivstatic byte[] iv = { 0x30, 0x31, 0x30, 0x32, 0x30, 0x33, 0x30, 0x34, 0x30, 0x35, 0x30, 0x36, 0x30, 0x37, 0x30, 0x38 };public static void init(byte[] keyBytes) { // 如果密钥不足16位,那么就补足. 这个if 中的内容很重要int base = 16;if (keyBytes.length % base != 0) { int groups = keyBytes.length / base + (keyBytes.length % base != 0 ? 1 : 0);byte[] temp = new byte[groups * base];Arrays.fill(temp, (byte) 0);System.arraycopy(keyBytes, 0, temp, 0, keyBytes.length);keyBytes = temp;}// 初始化Security.addProvider(new BouncyCastleProvider());// 转化成JAVA的密钥格式key = new SecretKeySpec(keyBytes, KEY_ALGORITHM);try { // 初始化ciphercipher = Cipher.getInstance(algorithmStr, "BC");} catch (NoSuchAlgorithmException e) { // TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchPaddingException e) { // TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchProviderException e) { // TODO Auto-generated catch blocke.printStackTrace();}}/*** 加密方法* --使用默认iv时* @param content* 要加密的字符串* @param keyBytes* 加密密钥* @return*/public static byte[] encrypt(byte[] content, byte[] keyBytes) { byte[] encryptedText = encryptOfDiyIV(content,keyBytes,iv);return encryptedText;} /*** 解密方法* --使用默认iv时* @param encryptedData* 要解密的字符串* @param keyBytes* 解密密钥* @return*/public static byte[] decrypt(byte[] encryptedData, byte[] keyBytes) { byte[] encryptedText = decryptOfDiyIV(encryptedData,keyBytes,iv);return encryptedText;}/*** 加密方法* ---自定义对称解密算法初始向量 iv* @param content* 要加密的字符串* @param keyBytes* 加密密钥* @param ivs* 自定义对称解密算法初始向量 iv* @return 加密的结果*/public static byte[] encryptOfDiyIV(byte[] content, byte[] keyBytes, byte[] ivs) { byte[] encryptedText = null;init(keyBytes);System.out.println("IV:" + new String(ivs));try { cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(ivs));encryptedText = cipher.doFinal(content);} catch (Exception e) { // TODO Auto-generated catch blocke.printStackTrace();}return encryptedText;}/*** 解密方法** @param encryptedData* 要解密的字符串* @param keyBytes* 解密密钥* @param ivs* 自定义对称解密算法初始向量 iv* @return*/public static byte[] decryptOfDiyIV(byte[] encryptedData, byte[] keyBytes,byte[] ivs) { byte[] encryptedText = null;init(keyBytes);System.out.println("IV:" + new String(ivs));try { cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(ivs));encryptedText = cipher.doFinal(encryptedData);} catch (Exception e) { // TODO Auto-generated catch blocke.printStackTrace();}return encryptedText;}}测试类
public class Test { public static void main(String[] args) throws Exception { String encryptedData = "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";String iv="r7BXXKkLb8qrSNn05n0qiA==";String sessionKey = "tiihtNczf5v6AKRyjwEUhQ==";toStr(sessionKey,encryptedData,iv);}private static void toStr(String sessionKey,String encryptedData ,String iv) throws Exception{ byte[] sessionKeyBy = BASE64.decryptBASE64(sessionKey.getBytes());byte[] encryptedDataBy = BASE64.decryptBASE64(encryptedData.getBytes());byte[] ivBy = BASE64.decryptBASE64(iv.getBytes());byte[] dec = Pkcs7Encoder.decryptOfDiyIV(encryptedDataBy, sessionKeyBy,ivBy);System.out.println(new String(dec));}} 测试类中的Base64 带测试方法 import org.apache.commons.codec.binary.Base64;/** * BASE64加密解密 */ public class BASE64 { /** * BASE64解密 * @param key * @return * @throws Exception */ public static byte[] decryptBASE64(byte[] key) throws Exception { return (new Base64()).decode(key); } /** * BASE64加密 * @param key * @return * @throws Exception */ public static byte[] encryptBASE64(byte[] key) throws Exception { return (new Base64()).encode(key); } public static void main(String[] args) throws Exception { byte[] data = BASE64.encryptBASE64("http://aub.iteye.com/".getBytes()); System.out.println("加密前:" + new String(data)); byte[] byteArray = BASE64.decryptBASE64(data); System.out.println("解密后:" + new String(byteArray)); } } 完成会出现的一些错误:
cannot load mian class 打包成jar包以后,在正式运行执行:java bcprov-jdk150on-1.55.jar之前,需要删除 .jar包中的一个文件:META-INF/BCKEY.DSA no such provider: BC 在jdk中的jre/lib/security修改java.security文件, security.provider.6=com.sun.security.sasl.Provider 下面添加 security.provider.7=org.bouncycastle.jce.provider.BouncyCastleProvider在/jre/lib/ext中添加bcprov-jdk15-135.jar的jar包bcprov-jdk16-143.jar提供加密,解密,生成密钥对等方法 下载网址:http://download.csdn.net/download/tomliguocai/3945936文章大部分代码来自http://windcoder.com/jinjiweixinxiaochengxu-javabanaescbcpkcs7paddingjiajiemizifuchuan/
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