xsalsa20/test.js

XSalsa20 implemented in Javascript and WebAssembly

var tape = require('tape')
var crypto = require('crypto')
var b4a = require('b4a')
var xsalsa20 = require('./')

var LIBSODIUM_TEST_KEY = b4a.from([
  0x1b, 0x27, 0x55, 0x64, 0x73, 0xe9, 0x85,
  0xd4, 0x62, 0xcd, 0x51, 0x19, 0x7a, 0x9a,
  0x46, 0xc7, 0x60, 0x09, 0x54, 0x9e, 0xac,
  0x64, 0x74, 0xf2, 0x06, 0xc4, 0xee, 0x08,
  0x44, 0xf6, 0x83, 0x89
])

var LIBSODIUM_TEST_NONCE = b4a.from([
  0x69, 0x69, 0x6e, 0xe9, 0x55, 0xb6,
  0x2b, 0x73, 0xcd, 0x62, 0xbd, 0xa8,
  0x75, 0xfc, 0x73, 0xd6, 0x82, 0x19,
  0xe0, 0x03, 0x6b, 0x7a, 0x0b, 0x37
])

var LIBSODIUM_TEST_MESSAGE = b4a.from([
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0xbe, 0x07, 0x5f, 0xc5,
  0x3c, 0x81, 0xf2, 0xd5, 0xcf, 0x14, 0x13, 0x16, 0xeb, 0xeb, 0x0c, 0x7b,
  0x52, 0x28, 0xc5, 0x2a, 0x4c, 0x62, 0xcb, 0xd4, 0x4b, 0x66, 0x84, 0x9b,
  0x64, 0x24, 0x4f, 0xfc, 0xe5, 0xec, 0xba, 0xaf, 0x33, 0xbd, 0x75, 0x1a,
  0x1a, 0xc7, 0x28, 0xd4, 0x5e, 0x6c, 0x61, 0x29, 0x6c, 0xdc, 0x3c, 0x01,
  0x23, 0x35, 0x61, 0xf4, 0x1d, 0xb6, 0x6c, 0xce, 0x31, 0x4a, 0xdb, 0x31,
  0x0e, 0x3b, 0xe8, 0x25, 0x0c, 0x46, 0xf0, 0x6d, 0xce, 0xea, 0x3a, 0x7f,
  0xa1, 0x34, 0x80, 0x57, 0xe2, 0xf6, 0x55, 0x6a, 0xd6, 0xb1, 0x31, 0x8a,
  0x02, 0x4a, 0x83, 0x8f, 0x21, 0xaf, 0x1f, 0xde, 0x04, 0x89, 0x77, 0xeb,
  0x48, 0xf5, 0x9f, 0xfd, 0x49, 0x24, 0xca, 0x1c, 0x60, 0x90, 0x2e, 0x52,
  0xf0, 0xa0, 0x89, 0xbc, 0x76, 0x89, 0x70, 0x40, 0xe0, 0x82, 0xf9, 0x37,
  0x76, 0x38, 0x48, 0x64, 0x5e, 0x07, 0x05
])

var LIBSODIUM_TEST_CIPHER = b4a.from([
  0x8e, 0x99, 0x3b, 0x9f, 0x48, 0x68, 0x12, 0x73,
  0xc2, 0x96, 0x50, 0xba, 0x32, 0xfc, 0x76, 0xce,
  0x48, 0x33, 0x2e, 0xa7, 0x16, 0x4d, 0x96, 0xa4,
  0x47, 0x6f, 0xb8, 0xc5, 0x31, 0xa1, 0x18, 0x6a,
  0xc0, 0xdf, 0xc1, 0x7c, 0x98, 0xdc, 0xe8, 0x7b,
  0x4d, 0xa7, 0xf0, 0x11, 0xec, 0x48, 0xc9, 0x72,
  0x71, 0xd2, 0xc2, 0x0f, 0x9b, 0x92, 0x8f, 0xe2,
  0x27, 0x0d, 0x6f, 0xb8, 0x63, 0xd5, 0x17, 0x38,
  0xb4, 0x8e, 0xee, 0xe3, 0x14, 0xa7, 0xcc, 0x8a,
  0xb9, 0x32, 0x16, 0x45, 0x48, 0xe5, 0x26, 0xae,
  0x90, 0x22, 0x43, 0x68, 0x51, 0x7a, 0xcf, 0xea,
  0xbd, 0x6b, 0xb3, 0x73, 0x2b, 0xc0, 0xe9, 0xda,
  0x99, 0x83, 0x2b, 0x61, 0xca, 0x01, 0xb6, 0xde,
  0x56, 0x24, 0x4a, 0x9e, 0x88, 0xd5, 0xf9, 0xb3,
  0x79, 0x73, 0xf6, 0x22, 0xa4, 0x3d, 0x14, 0xa6,
  0x59, 0x9b, 0x1f, 0x65, 0x4c, 0xb4, 0x5a, 0x74,
  0xe3, 0x55, 0xa5
])

var LIBSODIUM_TEST_KEY_2 = b4a.from([
  0x1b, 0x27, 0x55, 0x64, 0x73, 0xe9, 0x85,
  0xd4, 0x62, 0xcd, 0x51, 0x19, 0x7a, 0x9a,
  0x46, 0xc7, 0x60, 0x09, 0x54, 0x9e, 0xac,
  0x64, 0x74, 0xf2, 0x06, 0xc4, 0xee, 0x08,
  0x44, 0xf6, 0x83, 0x89
])

var LIBSODIUM_TEST_NONCE_2 = b4a.from([
  0x69, 0x69, 0x6e, 0xe9, 0x55, 0xb6,
  0x2b, 0x73, 0xcd, 0x62, 0xbd, 0xa8,
  0x75, 0xfc, 0x73, 0xd6, 0x82, 0x19,
  0xe0, 0x03, 0x6b, 0x7a, 0x0b, 0x37
])

var LIBSODIUM_TEST_CIPHER_2 = b4a.from([
  0xee, 0xa6, 0xa7, 0x25, 0x1c, 0x1e, 0x72, 0x91,
  0x6d, 0x11, 0xc2, 0xcb, 0x21, 0x4d, 0x3c, 0x25,
  0x25, 0x39, 0x12, 0x1d, 0x8e, 0x23, 0x4e, 0x65,
  0x2d, 0x65, 0x1f, 0xa4, 0xc8, 0xcf, 0xf8, 0x80
])

tape('libsodium fixture', function (t) {
  var xor = xsalsa20(LIBSODIUM_TEST_NONCE, LIBSODIUM_TEST_KEY)
  var output = b4a.alloc(LIBSODIUM_TEST_MESSAGE.length)
  xor.update(LIBSODIUM_TEST_MESSAGE, output)
  xor.finalize()
  t.same(output.slice(32), LIBSODIUM_TEST_CIPHER, 'should match fixture')
  t.end()
})

tape('libsodium fixture partial', function (t) {
  var xor = xsalsa20(LIBSODIUM_TEST_NONCE, LIBSODIUM_TEST_KEY)
  var output = b4a.alloc(LIBSODIUM_TEST_MESSAGE.length)

  for (var i = 0; i < output.length; i++) {
    xor.update(LIBSODIUM_TEST_MESSAGE.slice(i, i + 1), output.slice(i, i + 1))
  }

  xor.finalize()
  t.same(output.slice(32), LIBSODIUM_TEST_CIPHER, 'should match fixture')
  t.end()
})

tape('libsodium fixture partial (random chunks)', function (t) {
  var xor = xsalsa20(LIBSODIUM_TEST_NONCE, LIBSODIUM_TEST_KEY)
  var output = b4a.alloc(LIBSODIUM_TEST_MESSAGE.length)
  var i = 0

  while (i < output.length) {
    var end = i + Math.floor(Math.random() * 128)
    xor.update(LIBSODIUM_TEST_MESSAGE.slice(i, end), output.slice(i, end))
    i = end
  }

  xor.finalize()
  t.same(output.slice(32), LIBSODIUM_TEST_CIPHER, 'should match fixture')
  t.end()
})

tape('libsodium crypto_stream fixture', function (t) {
  var xor = xsalsa20(LIBSODIUM_TEST_NONCE_2, LIBSODIUM_TEST_KEY_2)
  var output = b4a.alloc(LIBSODIUM_TEST_CIPHER_2.length)
  output.fill(0)
  xor.update(output, output)
  xor.finalize()
  t.same(output, LIBSODIUM_TEST_CIPHER_2)
  t.end()
})

tape('encrypt and decrypt basic', function (t) {
  var key = crypto.randomBytes(32)
  var nonce = crypto.randomBytes(24)
  var cipher = b4a.from('hello world')

  var a = xsalsa20(nonce, key)
  a.update(cipher, cipher)
  t.notEqual(cipher, b4a.from('hello world'), 'encrypted')

  var b = xsalsa20(nonce, key)
  b.update(cipher, cipher)
  t.same(cipher, b4a.from('hello world'), 'unencrypted')

  a.finalize()
  b.finalize()

  t.end()
})

tape('encrypt and decrypt', function (t) {
  var key = crypto.randomBytes(32)
  var nonce = crypto.randomBytes(24)
  var message = crypto.randomBytes(10000)
  var cipher = b4a.alloc(10000)

  var xor = xsalsa20(nonce, key)
  xor.update(cipher, message)
  xor.finalize()
  t.notEqual(cipher, message, 'encrypted')

  xor = xsalsa20(nonce, key)
  xor.update(cipher, cipher)
  xor.finalize()
  t.same(cipher, message, 'unencrypted')
  t.end()
})

tape('core_hsalsa20', function (t) {
  var input = b4a.from(
    '50824531b103669bb974a92e03e27289e09ef7328b8c22bf3267c811bf28477c', 'hex')
  var output = b4a.alloc(32)
  var zero = b4a.alloc(16)
  zero.fill(0)

  xsalsa20.core_hsalsa20(output, zero, input, xsalsa20.SIGMA)

  var expected = b4a.from(
    '44317f32de851b34393a990b004840dc6e468fe10302ba4ec15b3304df34e326', 'hex')
  t.same(output, expected, 'core_hsalsa20 output')

  t.end()
});