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@@ -0,0 +1,380 @@
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+package com.platform.yijia.utils;
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+
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+import com.alibaba.fastjson.JSON;
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+import sun.misc.BASE64Decoder;
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+import sun.misc.BASE64Encoder;
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+
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+import javax.crypto.BadPaddingException;
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+import javax.crypto.Cipher;
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+import javax.crypto.IllegalBlockSizeException;
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+import javax.crypto.NoSuchPaddingException;
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+import java.io.*;
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+import java.security.*;
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+import java.security.interfaces.RSAPrivateKey;
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+import java.security.interfaces.RSAPublicKey;
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+import java.security.spec.InvalidKeySpecException;
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+import java.security.spec.PKCS8EncodedKeySpec;
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+import java.security.spec.X509EncodedKeySpec;
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+import java.util.Map;
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+
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+
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+/**
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+ * rsa 签名
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+ * 利用genKeyPair ()方法来生成钥匙对。
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+ 加密:RSAEncrypt.encryptBASE64(RSAEncrypt.encrypt(RSAEncrypt.loadPublicKeyByStr(RSAEncrypt.loadPublicKeyByFile(filepath)),"要加密的字符串".getBytes()))
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+ 解密:RSAEncrypt.decrypt(RSAEncrypt.loadPrivateKeyByStr(RSAEncrypt.loadPrivateKeyByFile(filepath)), RSAEncrypt.decryptBASE64("要解密的字符串"))
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+ */
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+public class RSAEncrypt {
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+ /**
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+ * 字节数据转字符串专用集合
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+ */
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+ private static final char[] HEX_CHAR = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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+
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+ /**
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+ * 随机生成密钥对
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+ */
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+ public static void genKeyPair(String filePath) {
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+ // KeyPairGenerator类用于生成公钥和私钥对,基于RSA算法生成对象
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+ KeyPairGenerator keyPairGen = null;
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+ try {
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+ keyPairGen = KeyPairGenerator.getInstance("RSA");
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+ } catch (NoSuchAlgorithmException e) {
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+ e.printStackTrace();
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+ }
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+ // 初始化密钥对生成器,密钥大小为96-1024位
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+ keyPairGen.initialize(1024, new SecureRandom());
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+ // 生成一个密钥对,保存在keyPair中
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+ KeyPair keyPair = keyPairGen.generateKeyPair();
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+ // 得到私钥
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+ RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
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+ // 得到公钥
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+ RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
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+ try {
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+ // 得到公钥字符串
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+ String publicKeyString = new String(encryptBASE64(publicKey.getEncoded()));
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+ // 得到私钥字符串
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+ String privateKeyString = new String(encryptBASE64(privateKey.getEncoded()));
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+ // 将密钥对写入到文件
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+ FileWriter pubfw = new FileWriter(filePath + "/publicKey.keystore");
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+ FileWriter prifw = new FileWriter(filePath + "/privateKey.keystore");
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+ BufferedWriter pubbw = new BufferedWriter(pubfw);
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+ BufferedWriter pribw = new BufferedWriter(prifw);
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+ pubbw.write(publicKeyString);
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+ pribw.write(privateKeyString);
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+ pubbw.flush();
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+ pubbw.close();
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+ pubfw.close();
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+ pribw.flush();
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+ pribw.close();
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+ prifw.close();
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+
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+ /**
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+ * 从文件中输入流中加载公钥
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+ *
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+ * @param path 公钥路径
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+ * @throws Exception 加载公钥时产生的异常
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+ */
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+ public static String loadPublicKeyByFile(String path) throws Exception {
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+ try {
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+ BufferedReader br = new BufferedReader(new FileReader(path + "/publicKey.keystore"));
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+ String readLine = null;
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+ StringBuilder sb = new StringBuilder();
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+ while ((readLine = br.readLine()) != null) {
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+ sb.append(readLine);
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+ }
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+ br.close();
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+ return sb.toString();
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+ } catch (IOException e) {
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+ throw new Exception("公钥数据流读取错误");
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+ } catch (NullPointerException e) {
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+ throw new Exception("公钥输入流为空");
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+ }
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+ }
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+
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+ /**
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+ * 从字符串中加载公钥
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+ *
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+ * @param publicKeyStr 公钥数据字符串
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+ * @throws Exception 加载公钥时产生的异常
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+ */
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+ public static RSAPublicKey loadPublicKeyByStr(String publicKeyStr) throws Exception {
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+ try {
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+ byte[] buffer = decryptBASE64(publicKeyStr);
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+ KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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+ X509EncodedKeySpec keySpec = new X509EncodedKeySpec(buffer);
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+ return (RSAPublicKey) keyFactory.generatePublic(keySpec);
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+ } catch (NoSuchAlgorithmException e) {
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+ throw new Exception("无此算法");
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+ } catch (InvalidKeySpecException e) {
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+ throw new Exception("公钥非法");
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+ } catch (NullPointerException e) {
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+ throw new Exception("公钥数据为空");
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+ }
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+ }
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+
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+ /**
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+ * 从文件中加载私钥
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+ *
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+ * @param path 私钥文件路径
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+ * @return 是否成功
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+ * @throws Exception
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+ */
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+ public static String loadPrivateKeyByFile(String path) throws Exception {
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+ try {
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+ BufferedReader br = new BufferedReader(new FileReader(path + "/privateKey.keystore"));
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+ String readLine = null;
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+ StringBuilder sb = new StringBuilder();
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+ while ((readLine = br.readLine()) != null) {
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+ sb.append(readLine);
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+ }
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+ br.close();
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+ return sb.toString();
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+ } catch (IOException e) {
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+ throw new Exception("私钥数据读取错误");
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+ } catch (NullPointerException e) {
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+ throw new Exception("私钥输入流为空");
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+ }
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+ }
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+
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+ public static RSAPrivateKey loadPrivateKeyByStr(String privateKeyStr) throws Exception {
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+ try {
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+ byte[] buffer = decryptBASE64(privateKeyStr);
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+ PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(buffer);
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+ KeyFactory keyFactory = KeyFactory.getInstance("RSA");
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+ return (RSAPrivateKey) keyFactory.generatePrivate(keySpec);
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+ } catch (NoSuchAlgorithmException e) {
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+ throw new Exception("无此算法");
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+ } catch (InvalidKeySpecException e) {
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+ throw new Exception("私钥非法");
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+ } catch (NullPointerException e) {
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+ throw new Exception("私钥数据为空");
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+ }
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+ }
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+
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+ /**
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+ * 公钥加密过程
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+ *
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+ * @param publicKey 公钥
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+ * @param plainTextData 明文数据
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+ * @return
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+ * @throws Exception 加密过程中的异常信息
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+ */
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+ public static byte[] encrypt(RSAPublicKey publicKey, byte[] plainTextData) throws Exception {
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+ if (publicKey == null) {
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+ throw new Exception("加密公钥为空, 请设置");
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+ }
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+ Cipher cipher = null;
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+ try {
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+ // 使用默认RSA
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+ cipher = Cipher.getInstance("RSA");
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+ // cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
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+ cipher.init(Cipher.ENCRYPT_MODE, publicKey);
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+ byte[] output = cipher.doFinal(plainTextData);
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+ return output;
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+ } catch (NoSuchAlgorithmException e) {
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+ throw new Exception("无此加密算法");
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+ } catch (NoSuchPaddingException e) {
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+ e.printStackTrace();
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+ return null;
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+ } catch (InvalidKeyException e) {
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+ throw new Exception("加密公钥非法,请检查");
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+ } catch (IllegalBlockSizeException e) {
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+ throw new Exception("明文长度非法");
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+ } catch (BadPaddingException e) {
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+ throw new Exception("明文数据已损坏");
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+ }
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+ }
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+
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+ /**
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+ * 私钥加密过程
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+ *
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+ * @param privateKey 私钥
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+ * @param plainTextData 明文数据
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+ * @return
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+ * @throws Exception 加密过程中的异常信息
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+ */
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+ public static byte[] encrypt(RSAPrivateKey privateKey, byte[] plainTextData) throws Exception {
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+ if (privateKey == null) {
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+ throw new Exception("加密私钥为空, 请设置");
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+ }
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+ Cipher cipher = null;
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+ try {
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+ // 使用默认RSA
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+ cipher = Cipher.getInstance("RSA");
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+ cipher.init(Cipher.ENCRYPT_MODE, privateKey);
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+ byte[] output = cipher.doFinal(plainTextData);
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+ return output;
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+ } catch (NoSuchAlgorithmException e) {
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+ throw new Exception("无此加密算法");
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+ } catch (NoSuchPaddingException e) {
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+ e.printStackTrace();
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+ return null;
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+ } catch (InvalidKeyException e) {
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+ throw new Exception("加密私钥非法,请检查");
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+ } catch (IllegalBlockSizeException e) {
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+ throw new Exception("明文长度非法");
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+ } catch (BadPaddingException e) {
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+ throw new Exception("明文数据已损坏");
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+ }
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+ }
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+
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+ /**
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+ * 私钥解密过程
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+ *
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+ * @param privateKey 私钥
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+ * @param cipherData 密文数据
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+ * @return 明文
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+ * @throws Exception 解密过程中的异常信息
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+ */
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+ public static byte[] decrypt(RSAPrivateKey privateKey, byte[] cipherData) throws Exception {
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+ if (privateKey == null) {
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+ throw new Exception("解密私钥为空, 请设置");
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+ }
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+ Cipher cipher = null;
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+ try {
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+ // 使用默认RSA
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+ cipher = Cipher.getInstance("RSA");
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+ // cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
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+ cipher.init(Cipher.DECRYPT_MODE, privateKey);
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+ byte[] output = cipher.doFinal(cipherData);
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+ return output;
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+ } catch (NoSuchAlgorithmException e) {
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+ throw new Exception("无此解密算法");
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+ } catch (NoSuchPaddingException e) {
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+ e.printStackTrace();
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+ return null;
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+ } catch (InvalidKeyException e) {
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+ throw new Exception("解密私钥非法,请检查");
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+ } catch (IllegalBlockSizeException e) {
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+ throw new Exception("密文长度非法");
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+ } catch (BadPaddingException e) {
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+ throw new Exception("密文数据已损坏");
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+ }
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+ }
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+
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+ /**
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+ * 公钥解密过程
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+ *
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+ * @param publicKey 公钥
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+ * @param cipherData 密文数据
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+ * @return 明文
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+ * @throws Exception 解密过程中的异常信息
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+ */
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+ public static byte[] decrypt(RSAPublicKey publicKey, byte[] cipherData) throws Exception {
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+ if (publicKey == null) {
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+ throw new Exception("解密公钥为空, 请设置");
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+ }
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+ Cipher cipher = null;
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+ try {
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+ // 使用默认RSA
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+ cipher = Cipher.getInstance("RSA");
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+ // cipher= Cipher.getInstance("RSA", new BouncyCastleProvider());
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+ cipher.init(Cipher.DECRYPT_MODE, publicKey);
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+ byte[] output = cipher.doFinal(cipherData);
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+ return output;
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+ } catch (NoSuchAlgorithmException e) {
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+ throw new Exception("无此解密算法");
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+ } catch (NoSuchPaddingException e) {
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+ e.printStackTrace();
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+ return null;
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+ } catch (InvalidKeyException e) {
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+ throw new Exception("解密公钥非法,请检查");
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+ } catch (IllegalBlockSizeException e) {
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+ throw new Exception("密文长度非法");
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+ } catch (BadPaddingException e) {
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+ throw new Exception("密文数据已损坏");
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+ }
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+ }
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+
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+ /**
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+ * 字节数据转十六进制字符串
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+ *
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+ * @param data 输入数据
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+ * @return 十六进制内容
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+ */
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+ public static String byteArrayToString(byte[] data) {
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+ StringBuilder stringBuilder = new StringBuilder();
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+ for (int i = 0; i < data.length; i++) {
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+ // 取出字节的高四位 作为索引得到相应的十六进制标识符 注意无符号右移
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+ stringBuilder.append(HEX_CHAR[(data[i] & 0xf0) >>> 4]);
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+ // 取出字节的低四位 作为索引得到相应的十六进制标识符
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+ stringBuilder.append(HEX_CHAR[(data[i] & 0x0f)]);
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+ if (i < data.length - 1) {
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+ stringBuilder.append(' ');
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+ }
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+ }
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+ return stringBuilder.toString();
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+ }
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+
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+ public static String encryptBASE64(byte[] key) throws Exception {
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+ return (new BASE64Encoder()).encodeBuffer(key);
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+ }
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+
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+ public static byte[] decryptBASE64(String key) throws Exception {
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+ return (new BASE64Decoder()).decodeBuffer(key);
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+ }
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+
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+ /**
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+ * 私钥加密(数字签名),用公钥进行验证
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+ * @param args
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+ */
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+ public static void main(String[] args) {
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+ String filepath = "/Users/cxd/Documents/Exercise/ideaDemo/src/main/resources";
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+
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+ String privateKey = "";
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+ String publicKey = "";
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+
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+
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+ String key = "123123123";
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+
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+ //RSAEncrypt.genKeyPair(filepath);
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+ System. out.println( "---------------私钥签名过程------------------" );
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+ String content= "{\"addressType01\":\"01\",\"addressType02\":\"01\",\"addressType03\":\"01\"}";
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+ String signstr= null;
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+ try {
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+
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+ // String enData = EncryptUtil.encryptBASE64(EncryptUtil.encrypt(content.getBytes(), key.getBytes()));
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+ Map<String, Object> requestParam = (Map<String, Object>) JSON.parse(content);
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+
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+ String signContent = RSASignature.getOrderContent(requestParam);
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+
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+ signstr = RSASignature.encryptBASE64(RSASignature.sign(signContent, privateKey));
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+
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+ // System.out.println("加密后的数据" + enData);
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+ System. out.println( "签名原串:" +signContent);
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+ System. out.println( "签名串:"+signstr);
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+ System. out.println();
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|
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+ //
|
|
|
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+ System. out.println( "---------------公钥校验签名------------------" );
|
|
|
|
+ System. out.println( "签名原串:" +content);
|
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|
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+ System. out.println( "签名串:"+signstr);
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|
|
+
|
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|
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+ System. out. println("验签结果:"+RSASignature.doCheck(signContent, signstr,publicKey ));
|
|
|
|
+
|
|
|
|
+
|
|
|
|
+ /* key = "123123121";
|
|
|
|
+ System.out.println("DES开始解密.....");
|
|
|
|
+ String deData = new String(EncryptUtil.decrypt(EncryptUtil.decryptBASE64(enData), key.getBytes()));
|
|
|
|
+ System.out.println("DES解密后的数据:" + deData);
|
|
|
|
+*/
|
|
|
|
+
|
|
|
|
+ String enData1 = "pTrCotXethMaH3K7jiM3Eg==\r\n";
|
|
|
|
+ String signstr1 = "RUPwD/bF/7Vgg203JQ/T3W4R1yHso1p6ZoUS8nysWand76fyB1+X1GdJNsBALQhajvaQHhTtWAaQ"
|
|
|
|
++"K7ezL2NASa7EYWC+H+jXhd98C6WgWFWga4ApjK2RjSWsTz1y30GJSxW++fbYYSuz8Owrx3iNLNyc"
|
|
|
|
++"E8Br0pdj40pL+OJs60A=";
|
|
|
|
+ String publicKey1 = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCOmsrFtFPTnEzfpJ/hDl5RODBxw4i9Ex3NmmG/N7A1+by032zZZgLLpdNh8y5otjFY0E37Nyr4FGKFRSSuDiTk8vfx3pv6ImS1Rxjjg4qdVHIfqhCeB0Z2ZPuBD3Gbj8hHFEtXZq8+msAFu/5ZQjiVhgs5WWBjh54LYWSum+d9+wIDAQAB";
|
|
|
|
+ System. out. println("验签结果1:"+RSASignature.doCheck(enData1, signstr1,publicKey1 ));
|
|
|
|
+ String desStr = "DFk3/UBtnjRh+b/S4EE3snSorVigDXmKIfWYap1PAlYNe5t5RNQnE9QoQzXOd9P8BKMa8Sld+ea4\nDWClWD1a7cZ6qrD29o7vDiaqM6md3FihHL+CuYJrwgOUzSHCbnGSjQNayKSxZ4ccXB4NKY+s4/8F\n8Q5p0wZ6H1jbYawv1qrUGV9Sdv2pVw5Q2nL1vhr5nws1plHxuTU0vQ8yVppYDt+Z42KkwDGs\n";
|
|
|
|
+
|
|
|
|
+ // String deData = new String(EncryptUtil.decrypt(EncryptUtil.decryptBASE64(desStr), key.getBytes()));
|
|
|
|
+ // System.out.println("DES解密后的数据:" + deData);
|
|
|
|
+
|
|
|
|
+ } catch (Exception e) {
|
|
|
|
+ e.printStackTrace();
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+}
|