ecb

Documentation

Overview

Package ecb implements block cipher mode of encryption ECB (Electronic Code Book) functions. This is implemented for legacy purposes only and should not be used for any new encryption needs. Use CBC (Cipher Block Chaining) instead.

Index

• func NewECBDecrypter(b cipher.Block) cipher.BlockMode
• func NewECBEncrypter(b cipher.Block) cipher.BlockMode

Examples

• NewECBDecrypter
• NewECBDecrypter (Second)
• NewECBEncrypter
• NewECBEncrypter (Second)

Functions

func NewECBDecrypter

func NewECBDecrypter(b cipher.Block) cipher.BlockMode

NewECBDecrypter returns a BlockMode which decrypts in electronic codebook (ECB) mode, using the given Block.

Example

key := []byte("SomeBlowfishKey")
ciphertext, err := hex.DecodeString("66E6E737F23E570ACA5710BA3C0E321A")
if err != nil {
	panic(err.Error())
}
block, err := blowfish.NewCipher(key)
if err != nil {
	panic(err.Error())
}
mode := NewECBDecrypter(block)
plaintext := make([]byte, len(ciphertext))
mode.CryptBlocks(plaintext, ciphertext)
fmt.Printf("%s\n", string(plaintext))

Output:

exampleplaintext

Example (Second)

key := []byte("AES256Key-32Characters1234567890")
ciphertext, err := hex.DecodeString("717FADE7B97198A8C2F67766FBAC7B07")
if err != nil {
	panic(err.Error())
}
block, err := aes.NewCipher(key)
if err != nil {
	panic(err.Error())
}
mode := NewECBDecrypter(block)
plaintext := make([]byte, len(ciphertext))
mode.CryptBlocks(plaintext, ciphertext)
fmt.Printf("%s\n", string(plaintext))

Output:

exampleplaintext

func NewECBEncrypter

func NewECBEncrypter(b cipher.Block) cipher.BlockMode

NewECBEncrypter returns a BlockMode which encrypts in elecronic codebook (ECB) mode, using the given Block (Cipher).

Example

key := []byte("SomeBlowfishKey")
plaintext := []byte("exampleplaintext")
block, err := blowfish.NewCipher(key)
if err != nil {
	panic(err.Error())
}
mode := NewECBEncrypter(block)
ciphertext := make([]byte, len(plaintext))
mode.CryptBlocks(ciphertext, plaintext)
fmt.Printf("%X\n", ciphertext)

Output:

66E6E737F23E570ACA5710BA3C0E321A

Example (Second)

key := []byte("AES256Key-32Characters1234567890")
plaintext := []byte("exampleplaintext")
block, err := aes.NewCipher(key)
if err != nil {
	panic(err.Error())
}
mode := NewECBEncrypter(block)
ciphertext := make([]byte, len(plaintext))
mode.CryptBlocks(ciphertext, plaintext)
fmt.Printf("%X\n", ciphertext)

Output:

717FADE7B97198A8C2F67766FBAC7B07