Generating base64-encoded Authorization headers in a variety of languages

example.cs

httpClient.DefaultRequestHeaders.Authorization = 
    new AuthenticationHeaderValue(
        "Basic", 
        Convert.ToBase64String(
            System.Text.ASCIIEncoding.ASCII.GetBytes(
                string.Format("{0}:{1}", username, password))));

example.php

$header = "Authorization: Basic " . base64_encode($username . ':' . $password);

example.py

base64string = base64.encodestring('%s:%s' % (username, password)).replace('\n', '')
header = ("Authorization: Basic %s" % base64string)   

example.rb

$header = 'Authorization: Basic ' + Base64.encode64( username + ':' + password ).chomp

jquery.js

$.ajax
({
  type: "GET",
  url: "https://www.example.com",
  dataType: 'json',
  headers: {
    "Authorization", btoa(username + ":" + password)
  },
  data: '{}',
  success: function (){
   ...
  }
});

node.js

var username = 'Test';
var password = '123';
var auth = 'Basic ' + new Buffer(username + ':' + password).toString('base64');

var header = {'Host': 'www.example.com', 'Authorization': auth};
var request = client.request('GET', '/', header);

Scala:

val bytesFromString = (username ++ ":" ++ password).getBytes("UTF-8")
val urlAuth = "Basic " ++ Base64.encode(bytesFromString)

The right scala implementation which run directly :

  val tokenBytes = s"$username:$password".getBytes("UTF-8")
  val tokenB64 = new String(java.util.Base64.getEncoder.encode(tokenBytes))
  val token = s"Basic $tokenB64"

in JQuery, aren't we missing the 'Basic ' prefix?

in Rust;

use http_auth_basic::Credentials;

let credentials = Credentials::new("username", "password").as_http_header();

assert_eq!(String::from("Basic dXNlcm5hbWU6cGFzc3dvcmQ="), credentials);

In Elixir:

username = "username"
password = "password"

"#{username}:#{password}"
|> Base.encode64()

In kotlin:

val username = "username"
val password = "password
val userpass = username + ":" + password
val encodedAuth = encodeToString(userpass.toByteArray(), NO_WRAP)
val authHeaderValue = "Basic " + encodedAuth
httpURLConnection.setRequestProperty("Authorization", authHeaderValue)