Encrypt and decrypt streams

crypto-stream.js

// Part of https://github.com/chris-rock/node-crypto-examples

// Nodejs encryption of buffers
var crypto = require('crypto'),
    algorithm = 'aes-256-ctr',
    password = 'd6F3Efeq';

var fs = require('fs');
var zlib = require('zlib');

// input file
var r = fs.createReadStream('file.txt');
// zip content
var zip = zlib.createGzip();
// encrypt content
var encrypt = crypto.createCipher(algorithm, password);
// decrypt content
var decrypt = crypto.createDecipher(algorithm, password)
// unzip content
var unzip = zlib.createGunzip();
// write file
var w = fs.createWriteStream('file.out.txt');

// start pipe
r.pipe(zip).pipe(encrypt).pipe(decrypt).pipe(unzip).pipe(w);

r.pipe(zip).pipe(encrypt).pipe(decrypt).pipe(unzip).pipe(w);
How split the pipe to mutil function? I want to encrypt the file to a path, and then read the encrypted file by path and decrypt to a memery stream.

How to get this to work when using createDecipheriv? I get this error:

Error: digital envelope routines:EVP_DecryptFinal_ex:wrong final block length

What's the best way to encrypt the file using streams and have the output in base64?

@michael-ts
Check these for file encryption using iv
https://gist.github.com/bbstilson/2c4241f8e89e6af4539cd2f347a28a17#file-encrypt-js
https://gist.github.com/bbstilson/a3a6c74fdc2a2519ab6ba59bcd06a1c4#file-decrypt-js

Missing ; one line 18 😅

Thanks for this