RSA加密 MD5加密
import org.apache.commons.codec.binary.Base64; import javax.crypto.Cipher; import java.security.KeyFactory; import java.security.KeyPair; import java.security.KeyPairGenerator; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import java.security.interfaces.RSAPrivateKey; import java.security.interfaces.RSAPublicKey; import java.security.spec.PKCS8EncodedKeySpec; import java.security.spec.X509EncodedKeySpec; import java.util.HashMap; import java.util.Map; public class RSAEncrypt { private static Map<Integer, String> keyMap = new HashMap<Integer, String>(); //用于封装随机产生的公钥与私钥 public static void main(String[] args) throws Exception { //生成公钥和私钥 genKeyPair(); //加密字符串 String message = "df723820"; System.out.println("随机生成的公钥为:" + keyMap.get(0)); System.out.println("随机生成的私钥为:" + keyMap.get(1)); String messageEn = encrypt(message,keyMap.get(0)); System.out.println(message + "\t加密后的字符串为:" + messageEn); String messageDe = decrypt(messageEn,keyMap.get(1)); System.out.println("还原后的字符串为:" + messageDe); } /** * 随机生成密钥对 * @throws NoSuchAlgorithmException */ public static void genKeyPair() throws NoSuchAlgorithmException { // KeyPairGenerator类用于生成公钥和私钥对,基于RSA算法生成对象 KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA"); // 初始化密钥对生成器,密钥大小为96-1024位 keyPairGen.initialize(1024,new SecureRandom()); // 生成一个密钥对,保存在keyPair中 KeyPair keyPair = keyPairGen.generateKeyPair(); RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate(); // 得到私钥 RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic(); // 得到公钥 String publicKeyString = new String(Base64.encodeBase64(publicKey.getEncoded())); // 得到私钥字符串 String privateKeyString = new String(Base64.encodeBase64((privateKey.getEncoded()))); // 将公钥和私钥保存到Map keyMap.put(0,publicKeyString); //0表示公钥 keyMap.put(1,privateKeyString); //1表示私钥 } /** * RSA公钥加密 * * @param str * 加密字符串 * @param publicKey * 公钥 * @return 密文 * @throws Exception * 加密过程中的异常信息 */ public static String encrypt( String str, String publicKey ) throws Exception{ //base64编码的公钥 byte[] decoded = Base64.decodeBase64(publicKey); RSAPublicKey pubKey = (RSAPublicKey) KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(decoded)); //RSA加密 Cipher cipher = Cipher.getInstance("RSA"); cipher.init(Cipher.ENCRYPT_MODE, pubKey); String outStr = Base64.encodeBase64String(cipher.doFinal(str.getBytes("UTF-8"))); return outStr; } /** * RSA私钥解密 * * @param str * 加密字符串 * @param privateKey * 私钥 * @return 铭文 * @throws Exception * 解密过程中的异常信息 */ public static String decrypt(String str, String privateKey) throws Exception{ //64位解码加密后的字符串 byte[] inputByte = Base64.decodeBase64(str.getBytes("UTF-8")); //base64编码的私钥 byte[] decoded = Base64.decodeBase64(privateKey); RSAPrivateKey priKey = (RSAPrivateKey) KeyFactory.getInstance("RSA").generatePrivate(new PKCS8EncodedKeySpec(decoded)); //RSA解密 Cipher cipher = Cipher.getInstance("RSA"); cipher.init(Cipher.DECRYPT_MODE, priKey); String outStr = new String(cipher.doFinal(inputByte)); return outStr; } }
/** * @auther fuxd on 2020/3/16 0016 * @description md5密码加密 * @param * @return */ public static String encodeByMd5(String encodeText){ try { //创建md5的加密方式 MessageDigest messageDigest = MessageDigest.getInstance("MD5"); //使用md5方式对输入值进行加密 byte[] encodeData = messageDigest.digest(encodeText.getBytes("utf-8")); //使用BASE64Encoder的encode方法,把字节数组转成字符串 String result = new BASE64Encoder().encode(encodeData); return result; } catch(Exception e) { e.printStackTrace(); return null; } }
前端rsa加密
应用js,注意:由于ie浏览器的js编译规则比较强,在引入js包的时候要引入ie兼容的js
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>使用jsencrypt执行OpenSSL的RSA加密,解密</title> </head> <!--引入jsencrypt.js--> <script src="https://cdn.bootcss.com/jsencrypt/3.0.0-beta.1/jsencrypt.js"></script>//ie应该应用ie兼容的js,此js不是ie兼容的 <script type="text/javascript"> //公钥 var PUBLIC_KEY = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC8HMr2CBpoZPm3t9tCVlrKtTmI4jNJc7/HhxjIEiDjC8czP4PV+44LjXvLYcSV0fwi6nE4LH2c5PBPEnPfqp0g8TZeX+bYGvd70cXee9d8wHgBqi4k0J0X33c0ZnW7JruftPyvJo9OelYSofBXQTcwI+3uIl/YvrgQRv6A5mW01QIDAQAB'; //私钥 var PRIVATE_KEY = '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'; //使用公钥加密 var encrypt = new JSEncrypt(); //encrypt.setPrivateKey('-----BEGIN RSA PRIVATE KEY-----'+PRIVATE_KEY+'-----END RSA PRIVATE KEY-----'); encrypt.setPublicKey('-----BEGIN PUBLIC KEY-----' + PUBLIC_KEY + '-----END PUBLIC KEY-----'); var encrypted = encrypt.encrypt('ceshi01'); console.log('加密后数据:%o', encrypted); //使用私钥解密 var decrypt = new JSEncrypt(); //decrypt.setPublicKey('-----BEGIN PUBLIC KEY-----' + PUBLIC_KEY + '-----END PUBLIC KEY-----'); decrypt.setPrivateKey('-----BEGIN RSA PRIVATE KEY-----'+PRIVATE_KEY+'-----END RSA PRIVATE KEY-----'); var uncrypted = decrypt.decrypt(encrypted); console.log('解密后数据:%o', uncrypted); </script> </html>