shifro

Installation

npm install shifro

npm install -g shifro

Usage

Library

Decrypting file using browser's Web Streams API

import { Input, StreamSource, Output, StreamTarget, Decryption } from 'shifro';
const selectFile = async () =>
 new Promise<File>((resolve) => {
 const input = document.querySelector<HTMLInputElement>('#input')!;
 input.addEventListener('change', () => resolve(input.files![0]));
 });
async function main() {
 const inputFile = await selectFile();
 const inputStream = inputFile.stream();
 const outputFileHandle = window.showSaveFilePicker({ suggestedName: 'output.mp4', startIn: 'downloads' });
 const outputStream = await outputFileHandle.createWritable();
 const input = new Input({ source: new StreamSource(inputStream) });
 const output = new Output({ target: new StreamTarget(outputStream) });
 const decryption = await Decryption.init({
 input,
 output,
 keys: [
 {
 kid: 'eb676abbcb345e96bbcf616630f1a3da',
 key: '100b6c20940f779a4589152b57d2dacb',
 },
 ],
 onProgress: (progress) => console.log(`Decrypting... ${progress}`),
 });
 await decryption.execute();
}

Decrypting file using Node.js streams

import { Input, FilePathSource, Output, FilePathTarget, Decryption } from 'shifro';
async function main() {
 const input = new Input({ source: new FilePathSource('./input.mp4') });
 const output = new Output({ target: new FilePathTarget('./output.mp4') });
 const decryption = await Decryption.init({
 input,
 output,
 keys: [
 {
 kid: 'eb676abbcb345e96bbcf616630f1a3da',
 key: '100b6c20940f779a4589152b57d2dacb',
 },
 ],
 onProgress: (progress) => process.stdout.write(`\rDecrypting... [${progress}]`),
 });
 await decryption.execute();
}

CLI

shifro --key eb676abbcb345e96bbcf616630f1a3da:100b6c20940f779a4589152b57d2dacb ./input.mp4 ./output.mp4

Credits