@digitalcredentials/base58-universal
v1.0.1
Published
Encode/decode using the Base58 Bitcoin Encoding Scheme.
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Base58 Universal Encoder/Decoder (@digitalcredentials/base58-universal)
Encoder/decoder for The Base58 Encoding Scheme for Node.js and Web browsers
Table of Contents
Security
TBD
Background
(Forked from digitalbazaar/base58-universal
to provide TypeScript compatibility.)
This library provides an encoder and decoder for The Base58 Encoding Scheme using an alphabet popularized by Bitcoin. It works in both Node.js and in Web browsers with no dependencies.
Install
- Node.js 8.3+ required.
To install for Node.js or in a Web project using npm:
npm install @digitalcredentials/base58-universal
To install locally or for development:
git clone https://github.com/digitalcredentials/base58-universal.git
cd base58-universal
npm install
Usage
The library can be loaded with CommonJS or ESM:
const {encode, decode} = require('@digitalcredentials/base58-universal');
import {encode, decode} from '@digitalcredentials/base58-universal';
Encoding
encode(input[, maxline])
input
:Uint8Array
- bytes to encodemaxline
:Number
- maximum number of encoded characters per line to use, defaults to infinite.- Returns a base58 encoded string.
import {encode} from 'base58-universal';
const input1 = Uint8Array([1, 2, 3, 4]);
const encoded1 = encode(input1);
// > 2VfUX
const input2 = Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
const encoded2 = encode(input2, 8);
// > 4HUtbHhN\r\n2TkpR
Decoding
decode(input)
input
:String
- string to decode- Returns a
Uint8Array
with the decoded bytes.
import {decode} from 'base58-universal';
const input3 = '2VfUX';
const decoded3 = decode(input3);
// > Uint8Array [ 1, 2, 3, 4 ]
const input4 = '4HUtbHhN\r\n2TkpR';
const decoded4 = decode(input4);
// > Uint8Array [
// 1, 2, 3, 4, 5,
// 6, 7, 8, 9, 10
// ]
String Handling
This library uses Uint8Array for encoder input and decoder output. Conversion to and from strings can be done with a variety of tools.
Browser
- TextEncoder and TextDecoder using the Encoding standard.
const input5 = new TextEncoder().encode('abc');
const encoded5 = encode(input5);
// > ZiCa
const decoded6 = decode(encoded5);
const output6 = new TextDecoder().decode(decoded6);
// > abc
Node.js
- util.TextEncoder and util.TextDecoder using the Encoding standard.
- Buffer
from
andtoString
with encoding options.
// Using TextEncoder/TextDecoder
const {TextEncoder, TextDecoder} = require('util');
const input7 = new TextEncoder().encode('abc');
const encoded7 = encode(input7);
// > ZiCa
const decoded8 = decode(encoded7);
const output8 = new TextDecoder().decode(decoded8);
// > abc
// Using Buffer (which is a Uint8Array)
const input9 = Buffer.from('616263', 'hex');
const encoded9 = encode(input9);
const decoded9 = decode(encoded9);
Buffer.from(decoded9).toString();
// > abc
Buffer.from(decoded9).toString('hex');
// > 616263
Contribute
Please follow the Bedrock contributing guidelines.
PRs accepted.
If editing the README, please conform to the standard-readme specification.
Commercial Support
Commercial support for this library is available upon request from Digital Bazaar: [email protected]
License
New BSD License (3-clause) © Digital Bazaar
Encoder/decoder original implementation from base-x under the MIT License.