cmac

Documentation

Index

• func New(c cipher.Block) (hash.Hash, error)
• func NewWithTagSize(c cipher.Block, tagsize int) (hash.Hash, error)
• func Sum(msg []byte, c cipher.Block, tagsize int) ([]byte, error)
• func Verify(mac, msg []byte, c cipher.Block, tagsize int) bool

Functions

func New

func New(c cipher.Block) (hash.Hash, error)

New returns a hash.Hash computing the CMAC checksum.

func NewWithTagSize

func NewWithTagSize(c cipher.Block, tagsize int) (hash.Hash, error)

NewWithTagSize returns a hash.Hash computing the CMAC checksum with the given tag size. The tag size must between the 1 and the cipher's block size.

func Sum

func Sum(msg []byte, c cipher.Block, tagsize int) ([]byte, error)

Sum computes the CMAC checksum with the given tagsize of msg using the cipher.Block.

func Verify

func Verify(mac, msg []byte, c cipher.Block, tagsize int) bool

Verify computes the CMAC checksum with the given tagsize of msg and compares it with the given mac. This functions returns true if and only if the given mac is equal to the computed one.