Jsencrypt is used to encrypt data between APP and WEB

RSA data encryption and decryption plug-in on the Web

New in package. Json"jsencrypt": "3.0.0 - rc. 1"Js useimport JSEncrypt from 'jsencrypt/bin/jsencrypt'
var PUBLIC_KEY = ' ' // generate your own
/ / encryption
export function encrypt(txt) {
  const encryptor = new JSEncrypt()
  encryptor.setPublicKey(PUBLIC_KEY) // Set the public key
  return encryptor.encrypt(txt) // Encrypt the data to be encrypted
}
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APP RSA data encryption and decryption plug-in

Front-end JS script

Link: pan.baidu.com/s/1fKyrzide… The obr password: 1

Back-end Java universal decryption code

import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import java.security.*;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;

/** * RSA encryption and decryption tool class, implement public key encryption private key decryption and private key decryption public key decryption */
public class RSAUtils {


    private static final String PUBLIC_KEY = ""; // generate your own

    private static final String PRIVATE_KEY = ""; // generate your own
    private static String src = "123456q";

    public static void main(String[] args) throws Exception {
        System.out.println("\n");
        RSAKeyPair keyPair = new RSAKeyPair(PUBLIC_KEY,PRIVATE_KEY);
        System.out.println(Public key: + keyPair.getPublicKey());
        System.out.println("Private key:" + keyPair.getPrivateKey());
        System.out.println("\n");
        test1(keyPair, src);
// System.out.println("\n");
// test2(keyPair, src);
// System.out.println("\n");
    }

    /** * Public key encryption private key decryption */
    private static void test1(RSAKeyPair keyPair, String source) throws Exception {
        System.out.println("***************** Public key encryption start decryption of private key *****************");
        String text1 = encryptByPublicKey(keyPair.getPublicKey(), source);
        String text2 = decryptByPrivateKey(keyPair.getPrivateKey(), text1);
        System.out.println("Before encryption:" + source);
        System.out.println("After encryption:" + text1);
        System.out.println("After decryption:" + text2);
        if (source.equals(text2)) {
            System.out.println("Decrypted string consistent with original string, decrypted successfully.");
        } else {
            System.out.println("Decryption string inconsistent with original string, decryption failed");
        }
        System.out.println("***************** Public key encryption and private key decryption end *****************");
    }

    /** * Private key encrypts public key decrypts **@throws Exception
     */
    private static void test2(RSAKeyPair keyPair, String source) throws Exception {
        System.out.println("***************** private key encryption start public key decryption *****************");
        String text1 = encryptByPrivateKey(keyPair.getPrivateKey(), source);
        String text2 = decryptByPublicKey(keyPair.getPublicKey(), text1);
        System.out.println("Before encryption:" + source);
        System.out.println("After encryption:" + text1);
        System.out.println("After decryption:" + text2);
        if (source.equals(text2)) {
            System.out.println("Decrypted string consistent with original string, decrypted successfully.");
        } else {
            System.out.println("Decryption string inconsistent with original string, decryption failed");
        }
        System.out.println("***************** private key encryption end public key decryption *****************");
    }

    /** * Public key decrypts **@param publicKeyText
     * @param text
     * @return
     * @throws Exception
     */
    public static String decryptByPublicKey(String publicKeyText, String text) throws Exception {
        X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(Base64.decodeBase64(publicKeyText));
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec);
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.DECRYPT_MODE, publicKey);
        byte[] result = cipher.doFinal(Base64.decodeBase64(text));
        return new String(result);
    }

    /** * private key encryption **@param privateKeyText
     * @param text
     * @return
     * @throws Exception
     */
    public static String encryptByPrivateKey(String privateKeyText, String text) throws Exception {
        PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(Base64.decodeBase64(privateKeyText));
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec);
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, privateKey);
        byte[] result = cipher.doFinal(text.getBytes());
        return Base64.encodeBase64String(result);
    }

    /** * private key decryption **@param privateKeyText
     * @param text
     * @return
     * @throws Exception
     */
    public static String decryptByPrivateKey(String privateKeyText, String text) throws Exception {
        PKCS8EncodedKeySpec pkcs8EncodedKeySpec5 = new PKCS8EncodedKeySpec(Base64.decodeBase64(privateKeyText));
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec5);
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.DECRYPT_MODE, privateKey);
        byte[] result = cipher.doFinal(Base64.decodeBase64(text));
        return new String(result);
    }

    /** * Public key encryption **@param publicKeyText
     * @param text
     * @return* /
    public static String encryptByPublicKey(String publicKeyText, String text) throws Exception {
        X509EncodedKeySpec x509EncodedKeySpec2 = new X509EncodedKeySpec(Base64.decodeBase64(publicKeyText));
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PublicKey publicKey = keyFactory.generatePublic(x509EncodedKeySpec2);
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, publicKey);
        byte[] result = cipher.doFinal(text.getBytes());
        return Base64.encodeBase64String(result);
    }

    /** * Builds an RSA key pair **@return
     * @throws NoSuchAlgorithmException
     */
    public static RSAKeyPair generateKeyPair(a) throws NoSuchAlgorithmException {
        KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("RSA");
        keyPairGenerator.initialize(1024);
        KeyPair keyPair = keyPairGenerator.generateKeyPair();
        RSAPublicKey rsaPublicKey = (RSAPublicKey) keyPair.getPublic();
        RSAPrivateKey rsaPrivateKey = (RSAPrivateKey) keyPair.getPrivate();
        String publicKeyString = Base64.encodeBase64String(rsaPublicKey.getEncoded());
        String privateKeyString = Base64.encodeBase64String(rsaPrivateKey.getEncoded());
        RSAKeyPair rsaKeyPair = new RSAKeyPair(publicKeyString, privateKeyString);
        return rsaKeyPair;
    }


    /** * RSA key pair object */
    public static class RSAKeyPair {

        private String publicKey;
        private String privateKey;

        public RSAKeyPair(String publicKey, String privateKey) {
            this.publicKey = publicKey;
            this.privateKey = privateKey;
        }

        public String getPublicKey(a) {
            return publicKey;
        }

        public String getPrivateKey(a) {
            returnprivateKey; }}}Copy the code