Initialize encryption and JavaScript reverse-engineering study repository

Document the project structure and setup while excluding local dependencies and IDE settings.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

非对称加密-2026-08-31/node环境实现rsa加解密.js

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+//  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);