des

Documentation

Overview

Package des implements the Data Encryption Standard (DES) and the Triple Data Encryption Algorithm (TDEA) as defined in U.S. Federal Information Processing Standards Publication 46-3.

Index

• Constants
• func NewCipher(key []byte) (cipher.Block, error)
• func NewTripleDESCipher(key []byte) (cipher.Block, error)
• type KeySizeError
  • func (k KeySizeError) Error() string

Examples

• NewTripleDESCipher

Constants

const BlockSize = 8

The DES block size in bytes.

Functions

func NewCipher

func NewCipher(key []byte) (cipher.Block, error)

NewCipher creates and returns a new cipher.Block.

func NewTripleDESCipher

func NewTripleDESCipher(key []byte) (cipher.Block, error)

NewTripleDESCipher creates and returns a new cipher.Block.

Example

// NewTripleDESCipher can also be used when EDE2 is required by
// duplicating the first 8 bytes of the 16-byte key.
ede2Key := []byte("example key 1234")

var tripleDESKey []byte
tripleDESKey = append(tripleDESKey, ede2Key[:16]...)
tripleDESKey = append(tripleDESKey, ede2Key[:8]...)

_, err := NewTripleDESCipher(tripleDESKey)
if err != nil {
	panic(err)
}

// See crypto/cipher for how to use a cipher.Block for encryption and
// decryption.

Types

type KeySizeError

type KeySizeError int

func (KeySizeError) Error

func (k KeySizeError) Error() string