package twofish

import "golang.org/x/crypto/twofish"

Package twofish implements Bruce Schneier's Twofish encryption algorithm.

Deprecated: Twofish is a legacy cipher and should not be used for new applications. Also, this package does not and will not provide an optimized implementation. Instead, use AES (from crypto/aes, if necessary in an AEAD mode like crypto/cipher.NewGCM) or XChaCha20-Poly1305 (from golang.org/x/crypto/chacha20poly1305).

Index ¶

• Constants
• type Cipher
• func NewCipher(key []byte) (*Cipher, error)
• func (c *Cipher) BlockSize() int
• func (c *Cipher) Decrypt(dst, src []byte)
• func (c *Cipher) Encrypt(dst, src []byte)
• type KeySizeError
• func (k KeySizeError) Error() string

Constants ¶

const BlockSize = 16

BlockSize is the constant block size of Twofish.

Types ¶

type Cipher ¶

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

A Cipher is an instance of Twofish encryption using a particular key.

func NewCipher ¶

func NewCipher(key []byte) (*Cipher, error)

NewCipher creates and returns a Cipher. The key argument should be the Twofish key, 16, 24 or 32 bytes.

func (*Cipher) BlockSize ¶

func (c *Cipher) BlockSize() int

BlockSize returns the Twofish block size, 16 bytes.

func (*Cipher) Decrypt ¶

func (c *Cipher) Decrypt(dst, src []byte)

Decrypt decrypts a 16-byte block from src to dst, which may overlap.

func (*Cipher) Encrypt ¶

func (c *Cipher) Encrypt(dst, src []byte)

Encrypt encrypts a 16-byte block from src to dst, which may overlap. Note that for amounts of data larger than a block, it is not safe to just call Encrypt on successive blocks; instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).

type KeySizeError ¶

type KeySizeError int

func (KeySizeError) Error ¶

func (k KeySizeError) Error() string

Source Files ¶

twofish.go