mirror of
https://github.com/fluencelabs/js-libp2p-crypto
synced 2025-03-15 21:50:54 +00:00
200 lines
6.3 KiB
Markdown
200 lines
6.3 KiB
Markdown
# js-libp2p-crypto
|
|
|
|
[](http://ipn.io)
|
|
[](http://ipfs.io/)
|
|
[](http://webchat.freenode.net/?channels=%23ipfs)
|
|
[](https://github.com/RichardLitt/standard-readme)
|
|
[](https://coveralls.io/github/libp2p/js-libp2p-crypto?branch=master)
|
|
[](https://travis-ci.org/libp2p/js-libp2p-crypto)
|
|
[](https://circleci.com/gh/libp2p/js-libp2p-crypto)
|
|
[](https://david-dm.org/libp2p/js-libp2p-crypto)
|
|
[](https://github.com/feross/standard)
|
|
|
|
|
|
|
|
[](https://saucelabs.com/u/ipfs-js-
|
|
libp2p-crypto)
|
|
|
|
> Crypto primitives for libp2p in JavaScript
|
|
|
|
This repo contains the JavaScript implementation of the crypto primitives
|
|
needed for libp2p. This is based on this [go implementation](https://github.com/libp2p/go-libp2p-crypto).
|
|
|
|
## Table of Contents
|
|
|
|
- [Install](#install)
|
|
- [Usage](#usage)
|
|
- [Example](#example)
|
|
- [API](#api)
|
|
- [`hmac`](#hmac)
|
|
- [`create(hash, secret, callback)`](#createhash-secret-callback)
|
|
- [`digest(data, callback)`](#digestdata-callback)
|
|
- [`aes`](#aes)
|
|
- [`create(key, iv, callback)`](#createkey-iv-callback)
|
|
- [`encrypt(data, callback)`](#encryptdata-callback)
|
|
- [`encrypt(data, callback)`](#encryptdata-callback)
|
|
- [`webcrypto`](#webcrypto)
|
|
- [`keys`](#keys)
|
|
- [`generateKeyPair(type, bits, callback)`](#generatekeypairtype-bits-callback)
|
|
- [`generateEphemeralKeyPair(curve, callback)`](#generateephemeralkeypaircurve-callback)
|
|
- [`keyStretcher(cipherType, hashType, secret, callback)`](#keystretcherciphertype-hashtype-secret-callback)
|
|
- [`marshalPublicKey(key[, type], callback)`](#marshalpublickeykey-type-callback)
|
|
- [`unmarshalPublicKey(buf)`](#unmarshalpublickeybuf)
|
|
- [`marshalPrivateKey(key[, type])`](#marshalprivatekeykey-type)
|
|
- [`unmarshalPrivateKey(buf, callback)`](#unmarshalprivatekeybuf-callback)
|
|
- [Contribute](#contribute)
|
|
- [License](#license)
|
|
|
|
## Install
|
|
|
|
```sh
|
|
npm install --save libp2p-crypto
|
|
```
|
|
|
|
## Usage
|
|
|
|
### Example
|
|
|
|
```js
|
|
const crypto = require('libp2p-crypto')
|
|
|
|
crypto.generateKeyPair('RSA', 2048, (err, key) => {
|
|
})
|
|
```
|
|
|
|
## API
|
|
|
|
### `hmac`
|
|
|
|
Exposes an interface to the Keyed-Hash Message Authentication Code (HMAC) as defined in U.S. Federal Information Processing Standards Publication 198. An HMAC is a cryptographic hash that uses a key to sign a message. The receiver verifies the hash by recomputing it using the same key.
|
|
|
|
#### `create(hash, secret, callback)`
|
|
|
|
- `hash: String`
|
|
- `secret: Buffer`
|
|
- `callback: Function`
|
|
|
|
##### `digest(data, callback)`
|
|
|
|
- `data: Buffer`
|
|
- `callback: Function`
|
|
|
|
### `aes`
|
|
Expoes an interface to AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197.
|
|
|
|
This uses `CTR` mode.
|
|
|
|
#### `create(key, iv, callback)`
|
|
|
|
- `key: Buffer` The key, if length `16` then `AES 128` is used. For length `32`, `AES 256` is used.
|
|
- `iv: Buffer` Must have length `16`.
|
|
- `callback: Function`
|
|
|
|
##### `encrypt(data, callback)`
|
|
|
|
- `data: Buffer`
|
|
- `callback: Function`
|
|
|
|
##### `encrypt(data, callback)`
|
|
|
|
- `data: Buffer`
|
|
- `callback: Function`
|
|
|
|
|
|
### `webcrypto`
|
|
|
|
Depending on the environment this is either an instance of [node-webcrypto-ossl](https://github.com/PeculiarVentures/node-webcrypto-ossl) or the result of `window.crypto`.
|
|
|
|
### `keys`
|
|
|
|
### `generateKeyPair(type, bits, callback)`
|
|
|
|
- `type: String`, only `'RSA'` is currently supported
|
|
- `bits: Number` Minimum of 1024
|
|
- `callback: Function`
|
|
|
|
Generates a keypair of the given type and bitsize.
|
|
|
|
### `generateEphemeralKeyPair(curve, callback)`
|
|
|
|
- `curve: String`, one of `'P-256'`, `'P-384'`, `'P-521'` is currently supported
|
|
- `callback: Function`
|
|
|
|
Generates an ephemeral public key and returns a function that will compute the shared secret key.
|
|
|
|
Focuses only on ECDH now, but can be made more general in the future.
|
|
|
|
Calls back with an object of the form
|
|
|
|
```js
|
|
{
|
|
key: Buffer,
|
|
genSharedKey: Function
|
|
}
|
|
```
|
|
|
|
### `keyStretcher(cipherType, hashType, secret, callback)`
|
|
|
|
- `cipherType: String`, one of `'AES-128'`, `'AES-256'`, `'Blowfish'`
|
|
- `hashType: String`, one of `'SHA1'`, `SHA256`, `SHA512`
|
|
- `secret: Buffer`
|
|
- `callback: Function`
|
|
|
|
Generates a set of keys for each party by stretching the shared key.
|
|
|
|
Calls back with an object of the form
|
|
```js
|
|
{
|
|
k1: {
|
|
iv: Buffer,
|
|
cipherKey: Buffer,
|
|
macKey: Buffer
|
|
},
|
|
k2: {
|
|
iv: Buffer,
|
|
cipherKey: Buffer,
|
|
macKey: Buffer
|
|
}
|
|
}
|
|
```
|
|
|
|
### `marshalPublicKey(key[, type], callback)`
|
|
|
|
- `key: crypto.rsa.RsaPublicKey`
|
|
- `type: String`, only `'RSA'` is currently supported
|
|
|
|
Converts a public key object into a protobuf serialized public key.
|
|
|
|
### `unmarshalPublicKey(buf)`
|
|
|
|
- `buf: Buffer`
|
|
|
|
Converts a protobuf serialized public key into its representative object.
|
|
|
|
### `marshalPrivateKey(key[, type])`
|
|
|
|
- `key: crypto.rsa.RsaPrivateKey`
|
|
- `type: String`, only `'RSA'` is currently supported
|
|
|
|
Converts a private key object into a protobuf serialized private key.
|
|
|
|
### `unmarshalPrivateKey(buf, callback)`
|
|
|
|
- `buf: Buffer`
|
|
- `callback: Function`
|
|
|
|
Converts a protobuf serialized private key into its representative object.
|
|
|
|
|
|
## Contribute
|
|
|
|
Feel free to join in. All welcome. Open an [issue](https://github.com/libp2p/js-libp2p-crypto/issues)!
|
|
|
|
This repository falls under the IPFS [Code of Conduct](https://github.com/ipfs/community/blob/master/code-of-conduct.md).
|
|
|
|
[](https://github.com/ipfs/community/blob/master/contributing.md)
|
|
|
|
## License
|
|
|
|
[MIT](LICENSE)
|