//  JSEncrypt()  node-rsa 两个包
// npm install node-rsa

var node_rsa = require("node-rsa").NodeRSA;  // node-rsa 2.x 导出的是 { NodeRSA, default }


class RsaEncryptDecrypt {
    constructor(key_size = 1024) {
        this.node_rsa = new node_rsa({b: key_size});
        this.public_key = this.node_rsa.exportKey("pkcs8-public");
        this.private_key = this.node_rsa.exportKey("pkcs8-private");

        console.log("公钥：", this.public_key);
        console.log("私钥", this.private_key);
    }

    encrypt(data) {
        const public_instance = new node_rsa(this.public_key, "pkcs8-public");
        return public_instance.encrypt(data, "base64");
    }

    decrypt(data) {
        const private_instance = new node_rsa(this.private_key, "pkcs8-private");
        return private_instance.decrypt(data, "utf8");
    }


}

const rsa = new RsaEncryptDecrypt();
const source_data = "你好，世界";

const enc_data = rsa.encrypt(source_data);
console.log("base", enc_data);

const dec_data = rsa.decrypt(enc_data);
console.log("解密结果", dec_data);