添加RSA非对称加密工具类

2026-08-12 21:02:08 +08:00 · 2024-04-09 17:53:13 +08:00
parent 8661826538
commit 3cf092a7b6
1 changed files with 102 additions and 0 deletions
@@ -0,0 +1,102 @@
+package com.cf.imes.module.system.util.rsa;
+
+import cn.hutool.core.codec.Base64;
+import cn.hutool.crypto.SecureUtil;
+import cn.hutool.crypto.asymmetric.AsymmetricAlgorithm;
+import cn.hutool.crypto.asymmetric.KeyType;
+import cn.hutool.crypto.asymmetric.RSA;
+import java.security.KeyPair;
+import java.util.LinkedList;
+
+/**
+ * 非对称加密工具类
+ *
+ * @author edimen
+ */
+public class AsymmetricAlgorithmUtil {
+
+
+    /**
+     * 公钥加密（解密就要用到对应的私钥）
+     *
+     * @param msg    明文信息
+     * @param pubKey 公钥，用来加密明文
+     * @return
+     */
+    public static String encryptByPublic(String msg, String pubKey) {
+        RSA rsa = new RSA(AsymmetricAlgorithm.RSA_ECB_PKCS1.getValue(), null, pubKey);
+        return rsa.encryptBase64(msg, KeyType.PublicKey);
+    }
+
+    /**
+     * 私钥解密
+     *
+     * @param encryptMsg 公钥加密的密文
+     * @param priKey     私钥，用来解密密文
+     * @return
+     */
+    public static String decryptByPrivate(String encryptMsg, String priKey) {
+        RSA rsa = new RSA(AsymmetricAlgorithm.RSA_ECB_PKCS1.getValue(), priKey, null);
+        return rsa.decryptStr(encryptMsg, KeyType.PrivateKey);
+    }
+
+    /**
+     * 私钥加密（解密就要用到对应的公钥）
+     *
+     * @param msg    明文信息
+     * @param priKey 私钥，用来加密明文
+     * @return
+     */
+    public static String encryptByPrivate(String msg, String priKey) {
+        RSA rsa = new RSA(AsymmetricAlgorithm.RSA_ECB_PKCS1.getValue(), priKey, null);
+        return rsa.encryptBase64(msg, KeyType.PrivateKey);
+    }
+
+
+    /**
+     * 公钥解密
+     *
+     * @param encryptMsg 密文
+     * @param pubKey     公钥，用来解密
+     * @return
+     */
+    public static String decryptByPublic(String encryptMsg, String pubKey) {
+        RSA rsa = new RSA(AsymmetricAlgorithm.RSA_ECB_PKCS1.getValue(), null, pubKey);
+        return rsa.decryptStr(encryptMsg, KeyType.PublicKey);
+    }
+
+    /**
+     * 获取公私钥集合
+     *
+     * @return
+     */
+    public static LinkedList<String> getPriKeyAndPubKey() {
+        KeyPair pair = SecureUtil.generateKeyPair("RSA");
+        String privateKey = Base64.encode(pair.getPrivate().getEncoded());
+        String publicKey = Base64.encode(pair.getPublic().getEncoded());
+        LinkedList<String> keys = new LinkedList<>();
+        keys.add(privateKey);
+        keys.add(publicKey);
+        return keys;
+    }
+
+    public static void main(String[] args) {
+
+        LinkedList<String> priKeyAndPubKey = AsymmetricAlgorithmUtil.getPriKeyAndPubKey();
+        String privateKey = priKeyAndPubKey.get(0);
+        String publicKey = priKeyAndPubKey.get(1);
+        String text = "HelloWorld";
+
+        String encryptByPublic = AsymmetricAlgorithmUtil.encryptByPublic(text, publicKey);
+        System.out.println(encryptByPublic);
+        String s = AsymmetricAlgorithmUtil.decryptByPrivate(encryptByPublic, privateKey);
+        System.out.println("公钥加密私钥解密："+s);
+
+        String encryptByPrivate = AsymmetricAlgorithmUtil.encryptByPrivate(text, privateKey);
+        System.out.println(encryptByPrivate);
+        String s1 = AsymmetricAlgorithmUtil.decryptByPublic(encryptByPrivate,publicKey);
+        System.out.println("私钥加密公钥解密:"+s1);
+    }
+
+}
+