RSA加解密 Java

import cn.hutool.crypto.asymmetric.KeyType;
import cn.hutool.crypto.asymmetric.RSA;


/**
 * RAS非对称加密
 */
public class RsaUtil {

    private static final String publicKey;
    private static final String privateKey;
    private static final RSA rsa;
    private static final String SALT = "123";

    static {
        publicKey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC2xhZ9YP2GhO1jxb8a1aPP7i6ZjfjD6kTS++9/HfFb9KhUGt1zr3m5H7WQ" +
                "/8oNUaJqaDHpjmKQ5hFUpHYVGQWjBlM+P1Ut2Y8EzKu6Kjra1tRC1r3YhoI7erLhRuv+8TZd+yswmn0ZnCskK6bUaFKlzXRaiZGzQKYQdDPJ12hubwIDAQAB";
        privateKey = "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";
        rsa = new RSA(privateKey, publicKey);
    }

    /**
     * 公钥加密
     * @param data 加密前数据
     * @return 返回加密后数据, base64格式
     */
    public static String encrypt(String data) {
        return rsa.encryptBase64(data + SALT, KeyType.PublicKey);
    }

    /**
     * 私钥解密
     * @param encryptStr 加密后的字符串
     * @return
     */
    public static String decrypt(String encryptStr) {
        return rsa.decryptStr(encryptStr, KeyType.PrivateKey);
    }

    public static void main(String[] args) {
        System.out.println("公钥:" + publicKey);
        System.out.println("私钥:" + privateKey);
        String encryptStr = encrypt("test");
        String decryptStr = decrypt(encryptStr);

        System.out.println("加密后:" + encryptStr);
        System.out.println("解密后:" + decryptStr);
    }
}

 依赖 

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
</dependency>