unichain-crypto

> :warning: Unichain 9 uses v2 of this module while Unichain 10 uses v3.

The crypto primitives used in unichain, extracted into a separate module

``
npm install unichain-crypto
`

Usage

` js
const crypto = require('unichain-crypto')

const keyPair = crypto.keyPair()
console.log(keyPair) // prints a ed25519 keypair
`

API

#### keyPair = crypto.keyPair()

Returns an ED25519 keypair that can used for tree signing.

#### signature = crypto.sign(message, secretKey)

Signs a message (buffer).

#### verified = crypto.verify(message, signature, publicKey)

Verifies a signature for a message.

#### hash = crypto.data(data)

Hashes a leaf node in a merkle tree.

#### hash = crypto.parent(left, right)

Hash a parent node in a merkle tree. left and right should look like this:

`js
{
index: treeIndex,
hash: hashOfThisNode,
size: byteSizeOfThisTree
}
`

#### hash = crypto.tree(peaks)

Hashes the merkle root of the tree. peaks should be an array of the peaks of the tree and should look like above.

#### buffer = crypto.randomBytes(size)

Returns a buffer containing random bytes of size size.

#### hash = crypto.discoveryKey(publicKey)

Return a hash derived from a publicKey that can used for discovery
without disclosing the public key.

#### list = crypto.namespace(name, count)`

Make a list of namespaces from a specific publicly known name.
Use this to namespace capabilities or hashes / signatures across algorithms.

License

MIT