该文介绍了使用Golang实现AES加密算法，包括字符串和文件的加解密，并在遇到Qt库问题后转向使用PyQt创建GUI界面。文章详细展示了代码实现，包括关键函数如子密钥扩展、字节替换、行移位和列混淆等，并提供了加解密的程序源码。
一. 个人感悟
该程序实现了AES加密算法的软件实现，使用Golang语言实现核心算法，使用Python实现前端展示程序，功能有字符串的加解密演示、文件的加解密演示。
首先呢,其实AES加密算法我去年已经写过了, 详情见 (AES加密算法软件实现-Java_aes软件实现_西瓜刀盹了的博客-优快云博客), 今年老师要求还要做GUI ,那就再写一遍吧 .
这次遇到的Bug是, 密钥扩展的时候, 要竖着一列一列扩展, 但是我赋值的时候给成横向的给了 . 遇到的困难, 还是列混合的时候, 真的不懂有限域乘法的具体算法, 只能用判断的方式, 来乘具体的数值了.
GUI部分了, 先去试了一下GTK, 由于我的Go版本太高了, get已经不支持了, 也是出一堆Bug , 后来去试了Qt, 发现官方文档是两年前的, 还是get , 照着Git上装, 还是装不上.浪费了将近一天时间, 放弃了. 后来用PyQt做了GUi, 然后封装了exe .
二. 结果验证
-
我的计算结果:
2. 网站验证
-
多余的我就不验证了, 我已经测试好了, 都是对的.
三. 程序源码
-
aes.go
/*
************************************************************************
> File Name: aes.go
> Author: Yu/Jinyang
> Created Time: 2022/10/23
***********************************************************************
*/
package aes
import (
"fmt"
"strconv"
)
type Aes struct {
plain_text string //明文字符串
key string //密钥字符串
cipher_text [4][4]uint64 //中间变量list
key_list [4][4]uint64 //密钥list
key_extended [11][4][4]uint64 //密钥扩展结果存起来,用于解密
round int
}
// 只公开了三个方法, 设置初始明文和密钥, 加密, 解密
// 其他方法全部封装在内, 拒绝访问
func (aes *Aes) SetPlaintextAndKey(p, k string) {
aes.plain_text = p
aes.key = k
aes.round = 0
}
func (aes *Aes) dataFormat() {
var temp [4][4]uint64
var err error
var tag bool = true
//将明文字符串转换为二维数组
for j := 0; j < 4; j++ {
for i := 0; i < 4; i++ {
temp[i][j], err = strconv.ParseUint(aes.plain_text[(j*8+i*2):(j*8+i*2+2)], 16, 64)
if err != nil {
tag = false
fmt.Println(i, j, "error")
}
}
}
aes.cipher_text = temp
//将密钥转换为二维数组
for j := 0; j < 4; j++ {
for i := 0; i < 4; i++ {
temp[i][j], err = strconv.ParseUint(aes.key[(j*8+i*2):(j*8+i*2+2)], 16, 64)
if err != nil {
tag = false
fmt.Println(i, j, "error")
}
}
}
aes.key_list = temp
aes.key_extended[0] = temp
if !tag {
fmt.Println("过程出现错误!")
}
}
func (aes *Aes) subBytes() {
for i := 0; i < 4; i++ {
aes.cipher_text[i] = aes.s_box_for_row(aes.cipher_text[i])
}
}
func (aes *Aes) s_box_for_row(row [4]uint64) [4]uint64 {
var ans [4]uint64
s_box := [16][16]uint64{
{0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76},
{0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0},
{0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15},
{0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75},
{0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84},
{0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf},
{0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8},
{0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2},
{0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73},
{0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb},
{0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79},
{0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08},
{0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a},
{0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e},
{0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf},
{0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16}}
for j := 0; j < 4; j++ {
index := (row[j] & 0xf0) >> 4
column := (row[j] & 0xf)
ans[j] = s_box[index][column]
}
return ans
}
func (aes *Aes) shiftRows() {
var temp [4][4]uint64
for i := 0; i < 4; i++ {
for j := 0; j < 4; j++ {
temp[i][j] = aes.cipher_text[i][(j+i)%4]
}
}
aes.cipher_text = temp
}
func (aes *Aes) mixColumns() {
matrix := [4][4]uint64{{2, 3, 1, 1}, {1, 2, 3, 1}, {1, 1, 2, 3}, {3, 1, 1, 2}}
//矩阵转置 放入 temp
var temp [4][4]uint64
for i := 0; i < 4; i++ {
for j := 0; j < 4; j++ {
temp[i][j] = aes.cipher_text[j][i]
}
}
//遍历 存值
for j := 0; j < 4; j++ {
for i := 0; i < 4; i++ {
aes.cipher_text[i][j] = uint64(aes.mulInFiniteDomain(matrix[i], temp[j]))
}
}
}
func (aes *Aes) mulInFiniteDomain(x, y [4]uint64) uint64 {
var ans uint64
for i := 0; i < 4; i++ {
if x[i]&0x01 == 1 {
ans ^= y[i] & 0xff
}
if x[i]&0x02 == 2 {
ans ^= aes.mulInFiniteDomainTwoNum(y[i])
}
if x[i]&0x04 == 4 {
tem := aes.mulInFiniteDomainTwoNum(y[i])
ans ^= aes.mulInFiniteDomainTwoNum(tem)
}
if x[i]&0x08 == 8 {
tem := aes.mulInFiniteDomainTwoNum(y[i])
tem2 := aes.mulInFiniteDomainTwoNum(tem)
ans ^= aes.mulInFiniteDomainTwoNum(tem2)
}
}
return ans
}
func (aes *Aes) mulInFiniteDomainTwoNum(y uint64) uint64 {
var ans uint64
if y&0x80 == 0x80 { //a7 = 1 的情况, << 1并 异或0x00011011
ans ^= ((y << 1) & 0xff) ^ (0x1b)
} else { // a7 = 0 的情况, 直接 << 1 即可
ans ^= (y << 1) & 0xff
}
return ans
}
func (aes *Aes) addRoundKey() {
for i := 0; i < 4; i++ {
for j := 0; j < 4; j++ {
aes.cipher_text[i][j] = aes.cipher_text[i][j] ^ aes.key_list[i][j]
}
}
}
func (aes *Aes) keySchedule(round int) {
var temp [4][4]uint64
//第一列 , 4的倍数
var rot_world [4]uint64
//列移位
for i := 0; i < 4; i++ {
rot_world[i] = aes.key_list[(i+1)%4][3]
}
//s盒变换
rot_world = aes.s_box_for_row(rot_world)
//异或第一列
for i := 0; i < 4; i++ {
rot_world[i] = aes.key_list[i][0] ^ rot_world[i]
}
//最后异或轮常数
var rcon uint64
if round < 8 {
rcon = 0x01 << round
} else if round == 8 {
rcon = 0x1b
} else if round == 9 {
rcon = 0x36
} else {
fmt.Println("Round out of range!")
}
rot_world[0] ^= rcon
for i := 0; i < 4; i++ {
temp[i][0] = rot_world[i]
}
//处理后三列
for j := 1; j < 4; j++ {
for i := 0; i < 4; i++ {
temp[i][j] = temp[i][j-1] ^ aes.key_list[i][j]
}
}
aes.key_list = temp
aes.key_extended[round+1] = temp
}
func (aes *Aes) reFormat() string {
var ans string
for j := 0; j < 4; j++ {
for i := 0; i < 4; i++ {
tem := fmt.Sprintf("%02x", aes.cipher_text[i][j])
ans += tem
}
}
return ans
}
func (aes *Aes) Encode() string {
aes.dataFormat()
aes.addRoundKey()
aes.keySchedule(aes.round)
aes.round++
for i := 0; i < 9; i++ {
// fmt.Println("第", i, "轮:")
aes.subBytes()
// fmt.Printf("s盒后 %x\n", aes.cipher_text)
aes.shiftRows()
// fmt.Printf("行移位 %x\n", aes.cipher_text)
aes.mixColumns()
// fmt.Printf("列混合 %x\n", aes.cipher_text)
aes.addRoundKey()
// fmt.Printf("轮密钥加%x\n", aes.cipher_text)
aes.keySchedule(aes.round) // 密钥生成
aes.round++
}
//最终轮
aes.subBytes()
aes.shiftRows()
aes.addRoundKey()
return aes.reFormat()
}
func (aes *Aes) Decode() string {
aes.key_list = aes.key_extended[10]
aes.addRoundKey()
for i := 9; i > 0; i-- {
aes.reShiftRow()
aes.resubBytes()
aes.key_list = aes.key_extended[i]
aes.addRoundKey()
aes.remixColumns()
}
aes.reShiftRow()
aes.resubBytes()
aes.key_list = aes.key_extended[0]
aes.addRoundKey()
return aes.reFormat()
}
func (aes *Aes) reShiftRow() {
var temp [4][4]uint64
for i := 0; i < 4; i++ {
for j := 0; j < 4; j++ {
temp[i][j] = aes.cipher_text[i][(j-i+4)%4]
}
}
aes.cipher_text = temp
}
func (aes *Aes) resubBytes() {
for i := 0; i < 4; i++ {
aes.cipher_text[i] = aes.re_s_box_for_row(aes.cipher_text[i])
}
}
func (aes *Aes) re_s_box_for_row(row [4]uint64) [4]uint64 {
var ans [4]uint64
s_box := [16][16]uint64{
{0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb},
{0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb},
{0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e},
{0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25},
{0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92},
{0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84},
{0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06},
{0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b},
{0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73},
{0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e},
{0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b},
{0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4},
{0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f},
{0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef},
{0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61},
{0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d}}
for j := 0; j < 4; j++ {
index := (row[j] & 0xf0) >> 4
column := (row[j] & 0xf)
ans[j] = s_box[index][column]
}
return ans
}
func (aes *Aes) remixColumns() {
matrix := [4][4]uint64{{0x0e, 0x0b, 0x0d, 0x09}, {0x09, 0x0e, 0x0b, 0x0d}, {0x0d, 0x09, 0x0e, 0x0b},
{0x0b, 0x0d, 0x09, 0x0e}}
//矩阵转置 放入 temp
var temp [4][4]uint64
for i := 0; i < 4; i++ {
for j := 0; j < 4; j++ {
temp[i][j] = aes.cipher_text[j][i]
}
}
//遍历 存值
for j := 0; j < 4; j++ {
for i := 0; i < 4; i++ {
aes.cipher_text[i][j] = uint64(aes.mulInFiniteDomain(matrix[i], temp[j]))
}
}
}
2. aes_core.go
/*
************************************************************************
> File Name: main.go
> Author: Yu/Jinyang
> Created Time: 2022/10/23
***********************************************************************
*/
package main
import (
"aesDemo/aes"
"fmt"
)
func main() {
var plaintext string
// fmt.Println("请输入128位明文(16进制):")
fmt.Scanln(&plaintext)
var key string
// fmt.Println("请输入128位密钥(16进制):")
fmt.Scanln(&key)
aes := aes.Aes{}
aes.SetPlaintextAndKey(plaintext, key)
cipher_text := aes.Encode()
fmt.Println(cipher_text)
plain_text := aes.Decode()
fmt.Println(plain_text)
}
3. main.py
import binascii
import os
import sys
from PyQt5 import QtWidgets
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QMainWindow, QMessageBox
from random import *
from StaticUI.MainWindow import Ui_MainWindow
import subprocess
import PyInstaller
# 22kb 50s
class MainWindow(QMainWindow, Ui_MainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.setupUi(self)
self.init_ui()
self.bind_button()
self.plaintext = ""
self.key = ""
self.key2 = ""
self.filepath = ""
def init_ui(self):
self.label_12.setTextInteractionFlags(Qt.TextSelectableByMouse)
pass
def bind_button(self):
self.pushButton_2.clicked.connect(self.auto_gen_plaintext)
self.pushButton_3.clicked.connect(self.auto_gen_key)
self.pushButton_6.clicked.connect(self.auto_gen_key2)
self.pushButton_4.clicked.connect(self.str_encode_decode)
self.pushButton_5.clicked.connect(self.file_encode_decode)
self.toolButton_4.clicked.connect(self.pick_file)
pass
def str_encode_decode(self):
if len(self.plaintext) != 33 or len(self.key) != 33:
QMessageBox.information(self, "警告", "明文或密钥长度不对!", QMessageBox.Yes)
else:
ret = subprocess.Popen(
"aes_core.exe",
stdout=subprocess.PIPE,
stdin=subprocess.PIPE,
stderr=subprocess.PIPE,
)
ret.stdin.write(self.plaintext.encode())
ret.stdin.flush()
ret.stdin.write(self.key.encode())
ret.stdin.flush()
ans1 = ret.stdout.readline().decode()
ans2 = ret.stdout.readline().decode()
ret.wait()
self.lineEdit_3.setText(ans1)
self.lineEdit_4.setText(ans2)
pass
def file_encode_decode(self):
if len(self.key2) != 33:
QMessageBox.information(self, "警告", "明文或密钥长度不对!", QMessageBox.Yes)
else:
self.lineEdit_6.setText("加密中, 请等待!")
self.lineEdit_5.setText("解密中, 请等待!")
f = open(self.filepath, "rb")
output_encode_file = open("aes_encrypted.txt", "wb")
output_decode_file = open("decode" + self.filepath[-4:], "wb")
output_encode_buff = ""
output_decode_buff = ""
while 1:
c = f.read(16)
if not c:
break
else:
cc = binascii.hexlify(c)
cc = str(cc, encoding="utf-8")
fill = 0
if len(cc) < 32:
fill = 32 - len(cc)
cc += (fill) * "0"
cc += "\n"
cy, m = self.encode_decode(cc, self.key2)
# cy = str(cy, encoding='utf-8')
cy = cy[:32]
cy = binascii.unhexlify(cy)
# m = str(m, encoding='utf-8')
m = m[:32 - fill]
m = binascii.unhexlify(m)
# output_encode_buff += cy
# output_decode_buff += m
output_encode_file.write(cy)
output_decode_file.write(m)
pass
self.lineEdit_6.setText(os.getcwd() + "\\aes_encrypted.txt")
self.lineEdit_5.setText(os.getcwd() + "\\decode" + self.filepath[-4:])
pass
def auto_gen_plaintext(self):
plaintext = "".join([choice("0123456789abcdef") for i in range(32)])
self.plaintext = plaintext + "\n"
self.lineEdit.setText(plaintext)
pass
def auto_gen_key(self):
plaintext = "".join([choice("0123456789abcdef") for i in range(32)])
self.key = plaintext + "\n"
self.lineEdit_2.setText(plaintext)
pass
def auto_gen_key2(self):
plaintext = "".join([choice("0123456789abcdef") for i in range(32)])
self.key2 = plaintext + "\n"
self.lineEdit_7.setText(plaintext)
pass
def pick_file(self):
filename, filetype = QtWidgets.QFileDialog.getOpenFileName(self, "选取文件",
os.getcwd() + '\\',
"All Files(*);;Text Files(*.txt)")
self.filepath = filename
self.toolButton_4.setText(filename)
@staticmethod
def encode_decode(plaintext, key):
ret = subprocess.Popen(
"aes_core.exe",
stdout=subprocess.PIPE,
stdin=subprocess.PIPE,
stderr=subprocess.PIPE,
)
ret.stdin.write(plaintext.encode())
ret.stdin.flush()
ret.stdin.write(key.encode())
ret.stdin.flush()
ans1 = ret.stdout.readline()
ans2 = ret.stdout.readline()
ret.wait()
print(ans1, ans2)
return ans1, ans2
pass
def main():
app = QtWidgets.QApplication(sys.argv) # 初始化app
test = MainWindow()
test.show()
sys.exit(app.exec_())
pass
if __name__ == '__main__':
main()
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