sas

Documentation

Overview

sas provides the means to do SAS between keys

Index

• type SAS
  • func New() (*SAS, error)
  • func (s SAS) CalculateMAC(input, info []byte) ([]byte, error)
  • func (s SAS) CalculateMACLongKDF(input, info []byte) ([]byte, error)
  • func (s SAS) GenerateBytes(info []byte, length uint) ([]byte, error)
  • func (s SAS) GetPubkey() []byte
  • func (s *SAS) SetTheirKey(key []byte) error

Types

type SAS

type SAS struct {
	KeyPair crypto.Curve25519KeyPair
	Secret  []byte
}

SAS contains the key pair and secret for SAS.

func New

func New() (*SAS, error)

New creates a new SAS with a new key pair.

func (SAS) CalculateMAC

func (s SAS) CalculateMAC(input, info []byte) ([]byte, error)

CalculateMACFixes returns a base64 encoded, 32 byte long MAC of input.

func (SAS) CalculateMACLongKDF

func (s SAS) CalculateMACLongKDF(input, info []byte) ([]byte, error)

CalculateMACLongKDF returns a base64 encoded, 256 byte long MAC of input.

func (SAS) GenerateBytes

func (s SAS) GenerateBytes(info []byte, length uint) ([]byte, error)

GenerateBytes creates length bytes from the shared secret and info.

func (SAS) GetPubkey

func (s SAS) GetPubkey() []byte

GetPubkey returns the public key of the key pair base64 encoded

func (*SAS) SetTheirKey

func (s *SAS) SetTheirKey(key []byte) error

SetTheirKey sets the key of the other party and computes the shared secret.