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WIP: Remove scrypt.js dependency (help wanted) #91

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WIP: Remove scrypt.js dependency (help wanted) #91

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c0526cf
implement naive removal of scrypt module
Leibniz137 Jun 16, 2019
45c5098
update crypto.scrypt calls to include dummy callback
Leibniz137 Jun 16, 2019
cdc1875
increment standard patch version to 12.0.1
Leibniz137 Jun 16, 2019
3c9bfa2
apply standard --fix
Leibniz137 Jun 16, 2019
a13f398
use scryptSync instead scrypt to remove the need to pass callback
Leibniz137 Jun 16, 2019
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3 changes: 1 addition & 2 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,6 @@
"hdkey": "^1.1.1",
"randombytes": "^2.0.6",
"safe-buffer": "^5.1.2",
"scrypt.js": "^0.3.0",
"utf8": "^3.0.0",
"uuid": "^3.3.2"
},
Expand All @@ -54,7 +53,7 @@
"husky": "^2.1.0",
"istanbul": "^0.4.5",
"mocha": "^5.2.0",
"standard": "^12.0.0"
"standard": "^12.0.1"
},
"standard": {
"globals": [
Expand Down
7 changes: 3 additions & 4 deletions src/index.js
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Expand Up @@ -2,7 +2,6 @@ var Buffer = require('safe-buffer').Buffer
var ethUtil = require('ethereumjs-util')
var crypto = require('crypto')
var randomBytes = require('randombytes')
var scryptsy = require('scrypt.js')
var uuidv4 = require('uuid/v4')
var bs58check = require('bs58check')

Expand Down Expand Up @@ -130,7 +129,7 @@ Wallet.prototype.toV3 = function (password, opts) {
kdfparams.n = opts.n || 262144
kdfparams.r = opts.r || 8
kdfparams.p = opts.p || 1
derivedKey = scryptsy(Buffer.from(password), salt, kdfparams.n, kdfparams.r, kdfparams.p, kdfparams.dklen)
derivedKey = crypto.scryptSync(Buffer.from(password), salt, kdfparams.dklen, { 'cost': kdfparams.n, 'blockSize': kdfparams.r, 'parallelization': kdfparams.p })
} else {
throw new Error('Unsupported kdf')
}
Expand Down Expand Up @@ -226,7 +225,7 @@ Wallet.fromV1 = function (input, password) {
}

var kdfparams = json.Crypto.KeyHeader.KdfParams
var derivedKey = scryptsy(Buffer.from(password), Buffer.from(json.Crypto.Salt, 'hex'), kdfparams.N, kdfparams.R, kdfparams.P, kdfparams.DkLen)
var derivedKey = crypto.scryptSync(Buffer.from(password), Buffer.from(json.Crypto.Salt, 'hex'), kdfparams.dklen, { 'cost': kdfparams.n, 'blockSize': kdfparams.r, 'parallelization': kdfparams.p })

var ciphertext = Buffer.from(json.Crypto.CipherText, 'hex')

Expand Down Expand Up @@ -256,7 +255,7 @@ Wallet.fromV3 = function (input, password, nonStrict) {
kdfparams = json.crypto.kdfparams

// FIXME: support progress reporting callback
derivedKey = scryptsy(Buffer.from(password), Buffer.from(kdfparams.salt, 'hex'), kdfparams.n, kdfparams.r, kdfparams.p, kdfparams.dklen)
derivedKey = crypto.scryptSync(Buffer.from(password), Buffer.from(kdfparams.salt, 'hex'), kdfparams.dklen, { 'cost': kdfparams.n, 'blockSize': kdfparams.r, 'parallelization': kdfparams.p })
} else if (json.crypto.kdf === 'pbkdf2') {
kdfparams = json.crypto.kdfparams

Expand Down
8 changes: 6 additions & 2 deletions src/thirdparty.js
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Original file line number Diff line number Diff line change
@@ -1,7 +1,6 @@
var Wallet = require('./index.js')
var ethUtil = require('ethereumjs-util')
var crypto = require('crypto')
var scryptsy = require('scrypt.js')
var utf8 = require('utf8')
var aesjs = require('aes-js')
var Buffer = require('safe-buffer').Buffer
Expand Down Expand Up @@ -186,7 +185,12 @@ Thirdparty.fromKryptoKit = function (entropy, password) {
var checksum = entropy.slice(30, 46)

var salt = kryptoKitBrokenScryptSeed(encryptedSeed)
var aesKey = scryptsy(Buffer.from(password, 'utf8'), salt, 16384, 8, 1, 32)
var dklen = 32
var n = 16384
var r = 8
var p = 1

var aesKey = crypto.scryptSync(Buffer.from(password, 'utf8'), salt, dklen, { 'cost': n, 'blockSize': r, 'parallelization': p })

/* FIXME: try to use `crypto` instead of `aesjs`

Expand Down