key-fingerprint  

Node.js library to easy calculate MD, SHA, etc fingerprint of a public/private key.

Installation

npm install key-fingerprint

OR

yarn add key-fingerprint

Usage

``typescript
fingerprint(key: string, algorithm: string = 'sha512', colons: boolean = false)
`

OR

`typescript
export enum SUPPORTED_ALGORITHM {
MD4 = 'md4',
MD5 = 'md5',
RMD160 = 'rmd160',
SHA1 = 'sha1',
SHA224 = 'sha224',
SHA256 = 'sha256',
SHA384 = 'sha384',
SHA512 = 'sha512',
}

export enum SUPPORTED_ENCODING {
HEX = 'hex',
LATIN1 = 'latin1',
BASE64 = 'base64',
}

interface IConfig {
algorithm: SUPPORTED_ALGORITHM,
colons: boolean,
encoding: SUPPORTED_ENCODING,
}

const DEFAULT_CONFIGURATION: IConfig = {
algorithm: SUPPORTED_ALGORITHM.SHA256,
colons: false,
encoding: SUPPORTED_ENCODING.HEX,
}

fingerprint(key: string, configuration: Partial)
`

Supported algorithms

- MD4
- MD5
- RMD160
- SHA1
- SHA224
- SHA256
- SHA384
- SHA512

Examples

`typescript
import { fingerprint } from 'key-fingerprint'

const key = '-----BEGIN PUBLIC KEY-----\n.........'
const sha256 = fingerprint(key, 'sha256') // => 'ab12ef12....
const sha256WithColons = fingerprint(key, 'sha256', true) // => 'ab:12:ef:12....
`

`typescript
import { fingerprint } from 'key-fingerprint'

const key = '-----BEGIN PUBLIC KEY-----\n.........'
const config = { encoding: 'base64', algorithm: 'sha512' } // options fallback to default if missing
const sha256 = fingerprint(key, config) // => 'ab12ef12....
const sha256WithColons = fingerprint(key, 'sha256', true) // => 'ab:12:ef:12....
``