go/src/crypto/cipher/ofb.go

type ofb …

// NewOFB returns a [Stream] that encrypts or decrypts using the block cipher b
// in output feedback mode. The initialization vector iv's length must be equal
// to b's block size.
func NewOFB(b Block, iv []byte) Stream { … }

func (x *ofb) refill() { … }

func (x *ofb) XORKeyStream(dst, src []byte) { … }