cast5

Documentation

Overview

Package cast5 implements CAST5, as defined in RFC 2144.

CAST5 is a legacy cipher and its short block size makes it vulnerable to birthday bound attacks (see https://sweet32.info). It should only be used where compatibility with legacy systems, not security, is the goal.

Deprecated: any new system should use AES (from crypto/aes, if necessary in an AEAD mode like crypto/cipher.NewGCM) or XChaCha20-Poly1305 (from github.com/bored-engineer/crypto/chacha20poly1305).

Index

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

Constants

const BlockSize = 8

const KeySize = 16

Types

type Cipher

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

func NewCipher

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

func (*Cipher) BlockSize

func (c *Cipher) BlockSize() int

func (*Cipher) Decrypt

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

func (*Cipher) Encrypt

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