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libp2p-crypto
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[](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.
npm install --save libp2p-crypto
const crypto = require('libp2p-crypto')
crypto.generateKeyPair('RSA', 2048, (err, key) => {
})
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 or the result of window.crypto
.
keys
generateKeyPair(type, bits, callback)
type: String
, only 'RSA'
is currently supportedbits: Number
Minimum of 1024callback: 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 supportedcallback: 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
{
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
{
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 supportedConverts 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 supportedConverts 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.
randomBytes(number)
number: Number
Generates a Buffer with length number
populated by random bytes.
Feel free to join in. All welcome. Open an issue!
This repository falls under the IPFS Code of Conduct.
FAQs
Crypto primitives for libp2p
The npm package libp2p-crypto receives a total of 27,717 weekly downloads. As such, libp2p-crypto popularity was classified as popular.
We found that libp2p-crypto demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
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