@trust/keyto
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1.0.1 • Public • Published

Keyto (@trust/keyto)

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A utility for translating cryptographic keys between representations.

Keyto is pronounced 'key-to'.

Full project documentation is available here.

Table of Contents

Status

RSA

  • [x] PKCS1
  • [x] PKCS8
  • [x] JWK

ECDSA - secp256k1 (Blockchain Curve)

  • [x] PKCS1 (Private Only)
  • [x] PKCS8
  • [x] JWK
  • [x] BLK (Private Key Hex String)

ECDSA - secp256r1 (P-256)

  • [x] PKCS1 (Private Only)
  • [x] PKCS8
  • [x] JWK

ECDSA - secp384r1 (P-384)

  • [x] PKCS1 (Private Only)
  • [x] PKCS8
  • [x] JWK

ECDSA - secp521r1 (P-521)

  • [x] PKCS1 (Private Only)
  • [x] PKCS8
  • [x] JWK

EDDSA - ed25519

  • [x] PKCS8
  • [x] JWK

EDDSA - ed448

  • [ ] PKCS8
  • [ ] JWK

Install

$ npm install @trust/keyto --save

Usage

Translate Private PEM to Public JWK:

const keyto = require('@trust/keyto')

let pemPrivate = getPrivatePemStringSomehow()
let jwk = getPublicJwkSomehow()

// String data can either be passed in directly:
let key = keyto.from(pemPrivate, 'pem').toJwk('public')

// Or can be passed in as an object instead:
let key = keyto.from({ key: pemPrivate }, 'pem').toJwk('public')
assertEqual(jwk, key)

Translate Private Hex (Blockchain) Key to PKCS8 Public PEM:

const keyto = require('@trust/keyto')

let blk = getPrivateBlockchainHexStringSomehow()
let pemPublic = getPublicPemSomehow()

let key = keyto.from(blk, 'blk').toString('pem', 'public_pkcs8')
assertEqual(pemPublic, key)

API

keyto.from(key, format) -> {Key}

args:

  • key := (String|JWK)
  • format := String

format:

Format can be any of these: 'pem', 'jwk' or 'blk'.

  • format = pem: will parse a PEM encoded string (as per OpenSSL output).
  • format = jwk: will parse a JWK object or JSON String
  • format = blk: will parse a hex encoded key string as used on various blockchains (limited to secp256k1 keys).

{Key}.toJwk(selector = 'public') -> {JWK}

args:

  • selector := String

selector:

Selector can be any of these: 'public', 'private'.

  • selector := public: will produce a public JWK.
  • selector := private: will produce a private JWK.

{Key}.toString(format = 'pem', selector = 'public') -> {String}

args:

  • format := String
  • selector := String

format:

Format can be any of these: 'pem', 'jwk' or 'blk'.

  • format = pem: will produce a PEM encoded string (as per OpenSSL output).
  • format = jwk: will produce a stringified JWK.
  • format = blk: will produce a hex encoded key string as used on various blockchains (limited to secp256k1 keys).

selector:

Selector can be any of these: 'public', 'private', 'public_pkcs1', 'public_pkcs8', 'private_pkcs1' or 'private_pkcs8'.

  • selector = public: will produce a public key.
  • selector = private: will produce a private key.
  • selector = public_pkcs1: will produce a public key according to the PKCS1 ASN Schema. Only relevant to DER related encodings.
  • selector = public_pkcs8: will produce a public key according to the PKCS8 ASN Schema. Only relevant to DER related encodings.
  • selector = private_pkcs1: will produce a private key according to the PKCS1 ASN Schema. Only relevant to DER related encodings.
  • selector = private_pkcs8: will produce a private key according to the PKCS8 ASN Schema. Only relevant to DER related encodings.

Maintainers

@EternalDeiwos @thelunararmy

Contribute

PRs accepted.

Small note: If editing the README, please conform to the standard-readme specification.

License

MIT © 2017-2020 Greg Linklater

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npm i @trust/keyto

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Version

1.0.1

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Collaborators

  • christiansmith
  • codenamedmitri
  • cstefanache
  • eternaldeiwos
  • ibudea
  • keelerh
  • thelunararmy