cipher

type CipherCreator func([]byte) (_cipher.Block, error)

type XTSBlockMode interface {
	// BlockSize returns the mode's block size.
	BlockSize() int

	// Encrypt encrypts or decrypts a number of blocks. The length of
	// src must be a multiple of the block size. Dst and src must overlap
	// entirely or not at all.
	//
	Encrypt(dst, src []byte, sectorNum uint64)

	// Decrypt decrypts a number of blocks. The length of
	// src must be a multiple of the block size. Dst and src must overlap
	// entirely or not at all.
	//
	Decrypt(dst, src []byte, sectorNum uint64)
}