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How to use the from function from safe-buffer

Find comprehensive JavaScript safe-buffer.from code examples handpicked from public code repositorys.

safe-buffer.from is a function in the safe-buffer library that creates a new Buffer instance from a given data source, such as a string or array.

README.md?plain=1

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// batch verifying
const publicKeys = [
  Buffer.from('9D03B28781BD34C3250E4250FEB4543AF02AC6529398EBF776AAA5C3BDA10CFD', 'hex'),
  Buffer.from('141F9A1B6360A717A7C71CB67E98D57513A84101192DC048F4382B5DF1B3C756', 'hex'),
  Buffer.from('F986619C277577317E362101E08F8ACF63B34623B6A4758C2254398F70564D5A', 'hex'),
];
const messages = [
  Buffer.from('243F6A8885A308D313198A2E03707344A4093822299F31D0082EFA98EC4E6C89', 'hex'),
  Buffer.from('5E2D58D8B3BCDF1ABADEC7829054F90DDA9805AAB56C77333024B9D0A508B75C', 'hex'),

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+ 223 other calls in file

sign.js

GitHub: browserify/browserify-sign

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  res = res.concat(r, [0x02, s.length], s)
  return Buffer.from(res)
}

function getKey (x, q, hash, algo) {
  x = Buffer.from(x.toArray())
  if (x.length < q.byteLength()) {
    var zeros = Buffer.alloc(q.byteLength() - x.length)
    x = Buffer.concat([zeros, x])
  }

+ 55 other calls in file

How does safe-buffer.from work?

safe-buffer.from is a function in the safe-buffer library that creates a new Buffer instance from a given data source. When you call safe-buffer.from with a data source as its argument, it creates a new Buffer instance that contains the same data as the source. The data source can be a string, an array of bytes, or an array-like object such as a TypedArray or DataView. If the data source is a string, safe-buffer.from will encode the string using the specified encoding (defaults to 'utf8') and return a new Buffer instance containing the encoded data. If the data source is an array of bytes or an array-like object, safe-buffer.from will create a new Buffer instance that contains the same bytes as the source. By using safe-buffer.from to create new Buffer instances, you can ensure that your code is compatible with both Node.js and web environments, where the implementation of Buffer may vary. The safe-buffer library provides a consistent and reliable implementation of Buffer that is compatible with both environments. Note that safe-buffer.from is designed to be a drop-in replacement for the Buffer.from method, which is not available in older versions of Node.js or in web environments. If you're working with newer versions of Node.js or in a web environment, you can use the native Buffer.from method instead.

wallet-address-validator.js

GitHub: mikedeshazer/CreateSendBitcoin

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  // deal with leading zeros
  for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) {
    bytes.push(0)
  }

  return Buffer.from(bytes.reverse())
}

function decode (string) {
  var buffer = decodeUnsafe(string)

+ 9 other calls in file

bs58check.js

GitHub: quantumbitcoin/wallets

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}
inherits(CipherBase, Transform)

CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
  if (typeof data === 'string') {
    data = Buffer.from(data, inputEnc)
  }

  var outData = this._update(data)
  if (this.hashMode) return this

+ 7 other calls in file

Ai Example

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const safeBuffer = require("safe-buffer");

// Define a string to encode as a buffer
const myString = "Hello, world!";

// Create a new buffer from the string using safeBuffer.from
const myBuffer = safeBuffer.from(myString);

// Output the contents of the buffer to the console
console.log(myBuffer);

In this example, we start by defining a string that we want to encode as a Buffer instance. We then pass that string to safe-buffer.from to create a new Buffer instance that contains the encoded data. We output the contents of the buffer to the console using console.log. The output will be a Buffer instance that contains the encoded data: r Copy code

rlp.js

GitHub: input-output-hk/mallet

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 * @param {Buffer,String,Integer,Array} data - will be converted to buffer
 * @returns {Array} - returns decode Array of Buffers containg the original message
 **/
exports.decode = function (input, stream) {
  if (!input || input.length === 0) {
    return Buffer.from([])
  }

  input = toBuffer(input)
  var decoded = _decode(input)

+ 71 other calls in file

MultipartDataGenerator.js

GitHub: team-telnyx/telnyx-node

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headers['Content-Type'] = ('multipart/form-data; boundary=' + segno);
var buffer = Buffer.alloc(0);

function push(l) {
  var prevBuffer = buffer;
  var newBuffer = (l instanceof Buffer) ? l : Buffer.from(l);
  buffer = Buffer.alloc(prevBuffer.length + newBuffer.length + 2);
  prevBuffer.copy(buffer);
  newBuffer.copy(buffer, prevBuffer.length);
  buffer.write('\r\n', buffer.length - 2);

+ 11 other calls in file

thirdparty.js

GitHub: velas/mobile-wallet

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if (!json.locked) {
  if (json.private.length !== 64) {
    throw new Error('Invalid private key length');
  }

  privKey = Buffer.from(json.private, 'hex');
} else {
  if (typeof password !== 'string') {
    throw new Error('Password required');
  }

+ 63 other calls in file

chunklistGeneratorBrowser.js

GitHub: jordicenzano/transport-stream-online-segmenter

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// properly optimized away early in Ignition+TurboFan.
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

+ 3 other calls in file

app.js

GitHub: Nyceane/clean_water_ai

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  res.status(400).send();
  return;
}

// The message is a unicode string encoded in base64.
const message = Buffer.from(req.body.message.data, 'base64').toString('utf-8');

//messages.push(message);
var data = qs.parse(message);
data.timestamp = new Date().getTime();

hdnode.js

GitHub: blockchaingate/Kanban-js

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  this.parentFingerprint = 0x00000000;
}

HDNode.HIGHEST_BIT = 0x80000000;
HDNode.LENGTH = 78;
HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8');

HDNode.fromSeedBuffer = function (seed, network) {
  typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments);

+ 7 other calls in file

built.js

GitHub: goonism/hyperbrowser

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if (size > 0) {  // getRandomValues fails on IE if size == 0
  crypto.getRandomValues(rawBytes)
}

// XXX: phantomjs doesn't like a buffer being passed here
var bytes = Buffer.from(rawBytes.buffer)

if (typeof cb === 'function') {
  return process.nextTick(function () {
    cb(null, bytes)

+ 9 other calls in file

transaction.js

GitHub: SmartCash/SmartCashjs-lib

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Transaction.ADVANCED_TRANSACTION_FLAG = 0x01

var EMPTY_SCRIPT = Buffer.allocUnsafe(0)
var EMPTY_WITNESS = []
var ZERO = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex')
var ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex')
var VALUE_UINT64_MAX = Buffer.from('ffffffffffffffff', 'hex')
var BLANK_OUTPUT = {
  script: EMPTY_SCRIPT,
  valueBuffer: VALUE_UINT64_MAX

+ 11 other calls in file

hdnode.js

GitHub: ZelCore-io/bitgo-utxo-lib

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  this.derivationCache = {}
}

HDNode.HIGHEST_BIT = 0x80000000
HDNode.LENGTH = 78
HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8')

HDNode.fromSeedBuffer = function (seed, network) {
  typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments)

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+ 3 other calls in file

payreq.js

GitHub: bitcoinjs/bolt11

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  }
  return hex
}


function textToBuffer (text) {
  return Buffer.from(text, 'utf8')
}


function hexToWord (hex) {
  const buffer = hexToBuffer(hex)

+ 9 other calls in file

verify.js

GitHub: browserify/browserify-sign

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pad = Buffer.from(pad)
var red = BN.mont(pub.modulus)
sig = new BN(sig).toRed(red)

sig = sig.redPow(new BN(pub.publicExponent))
sig = Buffer.from(sig.fromRed().toArray())
var out = padNum < 8 ? 1 : 0
len = Math.min(sig.length, pad.length)
if (sig.length !== pad.length) out = 1

index.js

GitHub: libertylocked/eth-ecies

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const Encrypt = (pubKeyTo, plaintext, opts) => {
  opts = opts || {};
  const ephemPrivKey = ec.keyFromPrivate(
    opts.ephemPrivKey || Crypto.randomBytes(32));
  const ephemPubKey = ephemPrivKey.getPublic();
  const ephemPubKeyEncoded = Buffer.from(ephemPubKey.encode());
  // Every EC public key begins with the 0x04 prefix before giving
  // the location of the two point on the curve
  const px = ephemPrivKey.derive(ec.keyFromPublic(
    Buffer.concat([Buffer.from([0x04]), pubKeyTo])).getPublic());

browserMqtt.js

GitHub: blockchain-mobility-ecosystem/mobility_dapps

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protocol.LENGTH_FIN_MASK = 0x80

/* Connack */
protocol.SESSIONPRESENT_MASK = 0x01
protocol.SESSIONPRESENT_HEADER = Buffer.from([protocol.SESSIONPRESENT_MASK])
protocol.CONNACK_HEADER = Buffer.from([protocol.codes['connack'] << protocol.CMD_SHIFT])

/* Connect */
protocol.USERNAME_MASK = 0x80
protocol.PASSWORD_MASK = 0x40

+ 19 other calls in file

tape.mjs

GitHub: thenikso/tu

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}


/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/

+ 111 other calls in file

exonum-client.js

GitHub: WCEF/wellweb

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}


Hash.prototype.update = function (data, enc) {
  if (typeof data === 'string') {
    enc = enc || 'utf8'
    data = Buffer.from(data, enc)
  }


  var block = this._block
  var blockSize = this._blockSize

+ 41 other calls in file

p2p-media-loader-hlsjs.js

GitHub: LiteLibria/litelibria.github.io

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		}
	})

	opts.infoHash = Array.isArray(opts.infoHash)
		? opts.infoHash.map(infoHash => Buffer.from(infoHash, 'hex'))
		: Buffer.from(opts.infoHash, 'hex')
	client.scrape({ infoHash: opts.infoHash })
	return client
}

+ 14 other calls in file

Other functions in safe-buffer

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