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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
}
