refactor: 客户端目录统一添加 kenaito-conf- 前缀

- go-client → kenaito-conf-go-client
- python-client → kenaito-conf-python-client
- python-client-demo → kenaito-conf-python-client-demo
- nodejs-client → kenaito-conf-nodejs-client
- nodejs-client-demo → kenaito-conf-nodejs-client-demo
- 更新所有 README 和 package.json 中的路径引用

kenaito-conf-nodejs-client/lib/crypto.js

@@ -0,0 +1,24 @@
+import crypto from 'node:crypto';
+
+const CRYPT_PREFIX = '{Cipher}';
+
+export function decryptConfig(secret, data) {
+  if (!data.startsWith(CRYPT_PREFIX)) {
+    return data;
+  }
+  const encrypted = data.slice(CRYPT_PREFIX.length);
+  return decryptWithAES(secret, encrypted);
+}
+
+export function decryptWithAES(key, data) {
+  const md5Hash = crypto.createHash('md5').update(key).digest('hex');
+  const aesKey = md5Hash.slice(16);
+  const cipherText = Buffer.from(data, 'base64');
+  const iv = Buffer.alloc(16, 0);
+  const decipher = crypto.createDecipheriv('aes-128-cbc', aesKey, iv);
+  decipher.setAutoPadding(false);
+  let plainText = Buffer.concat([decipher.update(cipherText), decipher.final()]);
+  const padding = plainText[plainText.length - 1];
+  plainText = plainText.slice(0, plainText.length - padding);
+  return plainText.toString('utf8');
+}