hmac

package standard library

go1.26.0 Latest Latest Go to latest Published: Feb 10, 2026 License: BSD-3-Clause Imports: 7 Imported by: 0

Details

Package hmac implements HMAC according to FIPS 198-1.

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func MarkAsUsedInKDF(h *HMAC)

MarkAsUsedInKDF records that this HMAC instance is used as part of a KDF.

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

func New[H hash.Hash](h func() H, key []byte) *HMAC

New returns a new HMAC hash using the given hash.Hash type and key.

func (h *HMAC) BlockSize() int

func (h *HMAC) Clone() (hash.Cloner, error)

Clone implements hash.Cloner if the underlying hash does. Otherwise, it returns an error wrapping errors.ErrUnsupported.

func (h *HMAC) Reset()

func (h *HMAC) Size() int

func (h *HMAC) Sum(in []byte) []byte

func (h *HMAC) Write(p []byte) (n int, err error)