yamlopenapi: 3.0.1
info:
  title: OTA Audio Security API
  version: 1.0.0
paths:
  /audio/encrypt:
    post:
      summary: Encrypt raw audio data (WAV/PCM/MP3)
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary
                key:
                  type: string
                  example: 32-char AES key or path to .key file
                algo:
                  type: string
                  enum: [AES-128, AES-256]
      responses:
        '200':
          description: Encrypted audio file
          content:
            application/octet-stream:
              schema:
                type: string
                format: binary

  /audio/decrypt:
    post:
      summary: Decrypt encrypted audio file
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary
                key:
                  type: string
                algo:
                  type: string
                  enum: [AES-128, AES-256]
      responses:
        '200':
          description: Decrypted raw audio
          content:
            application/octet-stream:
              schema:
                type: string
                format: binary

Sample script :

from Crypto.Cipher import AES
from flask import Flask, request, send_file
import tempfile, os

app = Flask(name)

def pad(data): return data + b”\0″ * (16 – len(data) % 16)

@app.route(“/audio/encrypt”, methods=[“POST”])
def encrypt_audio():
key = request.form[‘key’].encode()
algo = request.form[‘algo’]
file = request.files[‘file’]
raw = pad(file.read())

cipher = AES.new(key, AES.MODE_ECB)
enc = cipher.encrypt(raw)

tmp = tempfile.NamedTemporaryFile(delete=False)
tmp.write(enc)
tmp.close()
return send_file(tmp.name, as_attachment=True, download_name="encrypted_audio.ota")

@app.route(“/audio/decrypt”, methods=[“POST”])
def decrypt_audio():
key = request.form[‘key’].encode()
algo = request.form[‘algo’]
file = request.files[‘file’]
enc = file.read()

cipher = AES.new(key, AES.MODE_ECB)
dec = cipher.decrypt(enc).rstrip(b"\0")

tmp = tempfile.NamedTemporaryFile(delete=False)
tmp.write(dec)
tmp.close()
return send_file(tmp.name, as_attachment=True, download_name="decrypted_audio.raw")

if name == “main“:
app.run(port=5050)

Note , no information on the site to be used and is not intended to be used in part tool to illegally transmit on unapproved frequencies.