package root

import "go.mau.fi/libsignal/keys/root"

Package root provides root keys which are used to derive new chain and root keys in a ratcheting session.

Index ¶

• Constants
• type Key
• func NewKey(kdf kdf.HKDF, key []byte) *Key
• func (k *Key) Bytes() []byte
• func (k *Key) CreateChain(theirRatchetKey ecc.ECPublicKeyable, ourRatchetKey *ecc.ECKeyPair) (*session.KeyPair, error)

Constants ¶

const DerivedSecretsSize = 64

DerivedSecretsSize is the size of the derived secrets for root keys.

const KdfInfo string = "WhisperRatchet"

KdfInfo is used as the info for message keys to derive secrets using a Key Derivation Function

Types ¶

type Key ¶

type Key struct {
	// contains filtered or unexported fields
}

Key is a structure for RootKeys, which are used to derive a new set of chain and root keys for every round trip of messages.

func NewKey ¶

func NewKey(kdf kdf.HKDF, key []byte) *Key

NewKey returns a new RootKey given the key derivation function and bytes.

func (*Key) Bytes ¶

func (k *Key) Bytes() []byte

Bytes returns the RootKey in bytes.

func (*Key) CreateChain ¶

func (k *Key) CreateChain(theirRatchetKey ecc.ECPublicKeyable, ourRatchetKey *ecc.ECKeyPair) (*session.KeyPair, error)

CreateChain creates a new RootKey and ChainKey from the recipient's ratchet key and our private key.

Source Files ¶

RootKey.go