GO: AES Example

aes.go

package main

import (
  "crypto/aes"
  "crypto/cipher"
  "fmt"
)

func main() {
  input := []byte("this is a test")
  iv := []byte("532b6195636c6127")[:aes.BlockSize]
  key := []byte("532b6195636c61279a010000")

  fmt.Println("Input:     ", input)
  fmt.Println("Key:       ", key)
  fmt.Println("IV:        ", iv)

  encrypted := make([]byte, len(input))
  EncryptAES(encrypted, input, key, iv)

  fmt.Println("Output:    ", encrypted)
}

func EncryptAES(dst, src, key, iv []byte) error {
  aesBlockEncryptor, err := aes.NewCipher([]byte(key))
  if err != nil {
    return err
  }
  aesEncrypter := cipher.NewCFBEncrypter(aesBlockEncryptor, iv)
  aesEncrypter.XORKeyStream(dst, src)
  return nil
}

func DecryptAES(dst, src, key, iv []byte) error {
  aesBlockEncryptor, err := aes.NewCipher([]byte(key))
  if err != nil {
    return err
  }
  aesEncrypter := cipher.NewCFBEncrypter(aesBlockEncryptor, iv)
  aesEncrypter.XORKeyStream(dst, src)
  return nil
}