Golang AES加密

package main

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

var commonIV = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}

func main() {
    //password length must be under 30
    password := []byte("thisisthepassword")
    //key string
    key := "s8*WQ0@KO#CN*raoua8ofCTx*oxqCk46"

    ciphercode := Encrypt(key, password)
    Decrypt(key, ciphercode)

}

func Encrypt(key string, password []byte) []byte {
    //create aes
    c, err := aes.NewCipher([]byte(key))
    if err != nil {
        fmt.Printf("Error: NewCipher(%d bytes) = %s", len(key), err)
        os.Exit(-1)
    }

    //encrypt string
    cfb := cipher.NewCFBEncrypter(c, commonIV)
    ciphertext := make([]byte, len(password))
    cfb.XORKeyStream(ciphertext, password)
    return ciphertext
}

func Decrypt(key string, ciphercode []byte) []byte {
    //create aes
    c, err := aes.NewCipher([]byte(key))
    if err != nil {
        fmt.Printf("Error: NewCipher(%d bytes) = %s", len(key), err)
        os.Exit(-1)
    }

    //decrypt string
    cfbdec := cipher.NewCFBDecrypter(c, commonIV)
    password := make([]byte, 30)
    cfbdec.XORKeyStream(password, ciphercode)
    return password
}