Initial commit: API Debug Tool

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/test-rsa.js

@@ -0,0 +1,20 @@
+const crypto = require('crypto');
+const { generateKeyPairSync } = crypto;
+
+const { privateKey, publicKey } = generateKeyPairSync('rsa', {
+  modulusLength: 2048,
+  publicKeyEncoding: {
+    type: 'spki',
+    format: 'pem'
+  },
+  privateKeyEncoding: {
+    type: 'pkcs8',
+    format: 'pem'
+  }
+});
+
+const data = "apiCode=0001&entCode=1&nonce=999&timestamp=1565244098737";
+const sign = crypto.createSign('RSA-MD5');
+sign.update(data);
+const signature = sign.sign(privateKey, 'base64');
+console.log('Signature:', signature);