crypto

Documentation

Index

• Constants
• Variables
• func CalculateMac(meta []byte, data []byte, macKey []byte) ([]byte, error)
• func DecryptData(data []byte, encKey []byte, iv []byte) ([]byte, error)
• func DeriveSessionKeys(secret, pairingKey, cardData []byte) ([]byte, []byte, []byte)
• func EncryptData(data []byte, encKey []byte, iv []byte) ([]byte, error)
• func GenerateECDHSharedSecret(priv *ecdsa.PrivateKey, pub *ecdsa.PublicKey) []byte
• func OneShotEncrypt(pubKeyData, secret, data []byte) ([]byte, error)
• func VerifyCryptogram(challenge []byte, pairingPass string, cardCryptogram []byte) ([]byte, error)

Constants

const PairingTokenSalt = "Keycard Pairing Password Salt"

Variables

var ErrInvalidCardCryptogram = errors.New("invalid card cryptogram")

Functions

func CalculateMac

func CalculateMac(meta []byte, data []byte, macKey []byte) ([]byte, error)

func DecryptData

func DecryptData(data []byte, encKey []byte, iv []byte) ([]byte, error)

func DeriveSessionKeys

func DeriveSessionKeys(secret, pairingKey, cardData []byte) ([]byte, []byte, []byte)

func EncryptData

func EncryptData(data []byte, encKey []byte, iv []byte) ([]byte, error)

func GenerateECDHSharedSecret

func GenerateECDHSharedSecret(priv *ecdsa.PrivateKey, pub *ecdsa.PublicKey) []byte

func OneShotEncrypt

func OneShotEncrypt(pubKeyData, secret, data []byte) ([]byte, error)

func VerifyCryptogram

func VerifyCryptogram(challenge []byte, pairingPass string, cardCryptogram []byte) ([]byte, error)