MS-GUARD-256 API Documentation

Overview

The MS-GUARD-256 Encryption API provides secure AES-256-GCM encryption and decryption with strong password-based key derivation, nonce replay prevention, and optional rate limiting. It's built for developers who need cryptographic security and performance with privacy.

API Endpoint

Parameters

• action — required: encrypt or decrypt
• data — required: the plain text or the Base64 encoded encrypted string
• key — required: the password used to derive the encryption key

Examples

Encrypt

{
  "success": true,
  "result": "base64_payload_here"
}

Decrypt

{
  "success": true,
  "result": "Hello World"
}

JavaScript

fetch("https://guard.msnolix.com/api?action=encrypt&data=Hello%20World&key=secret123")
  .then(res => res.json())
  .then(json => console.log("Encrypted:", json.result));

Python

import requests

enc = requests.get("https://guard.msnolix.com/api", params={
  "action": "encrypt",
  "data": "Hello World",
  "key": "secret123"
}).json()["result"]

print("Encrypted:", enc)

result = requests.get("https://guard.msnolix.com/api", params={
  "action": "decrypt",
  "data": enc,
  "key": "secret123"
}).json()["result"]

print("Decrypted:", result)

PHP

$enc = json_decode(file_get_contents("https://guard.msnolix.com/api?action=encrypt&data=Hello%20World&key=secret123"), true);
echo "Encrypted: " . $enc['result'] . "\n";

$dec = json_decode(file_get_contents("https://guard.msnolix.com/api?action=decrypt&data=" . urlencode($enc['result']) . "&key=secret123"), true);
echo "Decrypted: " . $dec['result'] . "\n";

Technical Notes

• Encryption: AES-256-GCM with 12-byte IV and 16-byte tag
• Key derivation: Argon2id, 8 opslimit, 128MB memory
• Base64 output includes: version + salt + iv + tag + ciphertext
• Replay protection via IV file storage
• Rate limiting: 20 requests/minute per IP
• Max data size: 1MB