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new Buffer is deprecated and unsafe #1952

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new Buffer is deprecated and unsafe #1952

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Use Buffer.from instead of new Buffer
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noelyoo committed Oct 10, 2018
commit 65dc0c3c4bde1ae0c5d18e6e19e4dc1a70216241
2 changes: 1 addition & 1 deletion docs/_build/html/_sources/web3-eth.txt
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Expand Up @@ -1086,7 +1086,7 @@ Example
.. code-block:: javascript

var Tx = require('ethereumjs-tx');
var privateKey = new Buffer('e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109', 'hex')
var privateKey = Buffer.from('e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109', 'hex')

var rawTx = {
nonce: '0x00',
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2 changes: 1 addition & 1 deletion docs/web3-eth.rst
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Expand Up @@ -1097,7 +1097,7 @@ Example
.. code-block:: javascript

var Tx = require('ethereumjs-tx');
var privateKey = new Buffer('e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109', 'hex')
var privateKey = Buffer.from('e331b6d69882b4cb4ea581d88e0b604039a3de5967688d3dcffdd2270c0fd109', 'hex')

var rawTx = {
nonce: '0x00',
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16 changes: 8 additions & 8 deletions packages/web3-eth-accounts/src/index.js
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Expand Up @@ -307,27 +307,27 @@ Accounts.prototype.decrypt = function (v3Keystore, password, nonStrict) {
kdfparams = json.crypto.kdfparams;

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

if (kdfparams.prf !== 'hmac-sha256') {
throw new Error('Unsupported parameters to PBKDF2');
}

derivedKey = cryp.pbkdf2Sync(new Buffer(password), new Buffer(kdfparams.salt, 'hex'), kdfparams.c, kdfparams.dklen, 'sha256');
derivedKey = cryp.pbkdf2Sync(Buffer.from(password), Buffer.from(kdfparams.salt, 'hex'), kdfparams.c, kdfparams.dklen, 'sha256');
} else {
throw new Error('Unsupported key derivation scheme');
}

var ciphertext = new Buffer(json.crypto.ciphertext, 'hex');
var ciphertext = Buffer.from(json.crypto.ciphertext, 'hex');

var mac = utils.sha3(Buffer.concat([ derivedKey.slice(16, 32), ciphertext ])).replace('0x','');
if (mac !== json.crypto.mac) {
throw new Error('Key derivation failed - possibly wrong password');
}

var decipher = cryp.createDecipheriv(json.crypto.cipher, derivedKey.slice(0, 16), new Buffer(json.crypto.cipherparams.iv, 'hex'));
var decipher = cryp.createDecipheriv(json.crypto.cipher, derivedKey.slice(0, 16), Buffer.from(json.crypto.cipherparams.iv, 'hex'));
var seed = '0x'+ Buffer.concat([ decipher.update(ciphertext), decipher.final() ]).toString('hex');

return this.privateKeyToAccount(seed);
Expand All @@ -351,13 +351,13 @@ Accounts.prototype.encrypt = function (privateKey, password, options) {
if (kdf === 'pbkdf2') {
kdfparams.c = options.c || 262144;
kdfparams.prf = 'hmac-sha256';
derivedKey = cryp.pbkdf2Sync(new Buffer(password), salt, kdfparams.c, kdfparams.dklen, 'sha256');
derivedKey = cryp.pbkdf2Sync(Buffer.from(password), salt, kdfparams.c, kdfparams.dklen, 'sha256');
} else if (kdf === 'scrypt') {
// FIXME: support progress reporting callback
kdfparams.n = options.n || 8192; // 2048 4096 8192 16384
kdfparams.r = options.r || 8;
kdfparams.p = options.p || 1;
derivedKey = scryptsy(new Buffer(password), salt, kdfparams.n, kdfparams.r, kdfparams.p, kdfparams.dklen);
derivedKey = scryptsy(Buffer.from(password), salt, kdfparams.n, kdfparams.r, kdfparams.p, kdfparams.dklen);
} else {
throw new Error('Unsupported kdf');
}
Expand All @@ -367,9 +367,9 @@ Accounts.prototype.encrypt = function (privateKey, password, options) {
throw new Error('Unsupported cipher');
}

var ciphertext = Buffer.concat([ cipher.update(new Buffer(account.privateKey.replace('0x',''), 'hex')), cipher.final() ]);
var ciphertext = Buffer.concat([ cipher.update(Buffer.from(account.privateKey.replace('0x',''), 'hex')), cipher.final() ]);

var mac = utils.sha3(Buffer.concat([ derivedKey.slice(16, 32), new Buffer(ciphertext, 'hex') ])).replace('0x','');
var mac = utils.sha3(Buffer.concat([ derivedKey.slice(16, 32), Buffer.from(ciphertext, 'hex') ])).replace('0x','');

return {
version: 3,
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2 changes: 1 addition & 1 deletion test/eth.accounts.create.js
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Expand Up @@ -22,7 +22,7 @@ describe("eth", function () {
var acc = ethAccounts.create();

// create ethereumjs-wallet account
var ethWall = ethereumWallet.fromPrivateKey(new Buffer(acc.privateKey.replace('0x',''),'hex'));
var ethWall = ethereumWallet.fromPrivateKey(Buffer.from(acc.privateKey.replace('0x',''),'hex'));

// compare addresses
assert.equal(acc.address, ethWall.getChecksumAddressString());
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6 changes: 3 additions & 3 deletions test/eth.accounts.encrypt-decrypt.js
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Expand Up @@ -11,8 +11,8 @@ for (var i = 0; i < 50; i++) {
}
var n = 256;
var salt = '3a1012583f8be138537bc7cf8a50c925b6fcc01a9f7744c85a18fbdc07999f10';
var iv = new Buffer('653195c3e2791ac53f3f19b125c18f8c', 'hex');
var uuid = new Buffer('ff31ddc3e2791ac53f3f19b125c18fff', 'hex');
var iv = Buffer.from('653195c3e2791ac53f3f19b125c18f8c', 'hex');
var uuid = Buffer.from('ff31ddc3e2791ac53f3f19b125c18fff', 'hex');
var pw = 'test';

// tests from https://github.com/Gustav-Simonsson/go-ethereum/blob/7cc6b801e0967e5ebfa26b9f670675acea6e3a20/accounts/testdata/v3_test_vector.json
Expand Down Expand Up @@ -120,7 +120,7 @@ describe("eth", function () {
var acc = ethAccounts.create();

// create ethereumjs-wallet account
var ethWall = ethereumWallet.fromPrivateKey(new Buffer(acc.privateKey.replace('0x',''),'hex'));
var ethWall = ethereumWallet.fromPrivateKey(Buffer.from(acc.privateKey.replace('0x',''),'hex'));

// compare addresses
assert.equal(acc.address, ethWall.getChecksumAddressString());
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