mac

Documentation

Overview

Package mac provides subtle implementations of the Mac primitive.

Index

• func ValidateHmacParams(hash string, keySize uint32, tagSize uint32) error
• type Hmac
  • func NewHmac(hashAlg string, key []byte, tagSize uint32) (*Hmac, error)
  • func (h *Hmac) ComputeMac(data []byte) ([]byte, error)
  • func (h *Hmac) VerifyMac(mac []byte, data []byte) (bool, error)

Functions

func ValidateHmacParams

func ValidateHmacParams(hash string, keySize uint32, tagSize uint32) error

ValidateHmacParams validates parameters of Hmac constructor.

Types

type Hmac

type Hmac struct {
	HashFunc func() hash.Hash
	Key      []byte
	TagSize  uint32
}

Hmac implementation of interface tink.Mac

func NewHmac

func NewHmac(hashAlg string, key []byte, tagSize uint32) (*Hmac, error)

NewHmac creates a new instance of Hmac with the specified key and tag size.

func (*Hmac) ComputeMac

func (h *Hmac) ComputeMac(data []byte) ([]byte, error)

ComputeMac computes message authentication code (MAC) for the given data.

func (*Hmac) VerifyMac

func (h *Hmac) VerifyMac(mac []byte, data []byte) (bool, error)

VerifyMac verifies whether the given MAC is a correct authentication code (MAC) the given data.