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# 服务端（用户A）
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from os import SEEK_SET
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from tkinter import *
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from tkinter.filedialog import askopenfilename
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import socket
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import threading
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import rsa
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from Crypto.Cipher import AES
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from Crypto.PublicKey import RSA
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from Crypto.Cipher import PKCS1_v1_5 as Cipher_pkcs1_v1_5
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import base64
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from Crypto.Signature import PKCS1_v1_5 as Signature_pkcs1_v1_5
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from Crypto.Hash import SHA
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from binascii import b2a_hex, a2b_hex
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import chardet
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class a():
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def t3():
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client = socket.socket() # 生成socket连接对象
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ip_port =("localhost", 6970) # 地址和端口号
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client.connect(ip_port) # 连接
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print("服务器已连接")
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sn=len(path.get().encode("utf-8"))
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client.send(str(sn).encode("utf-8"))
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# size=os.stat(path.get()).st_size
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client.send(path.get().encode("utf-8")) #文件名
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client.send(mode.get().encode("utf-8"))
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# client.send(str(size).encode("utf-8")) #大小
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#读取密钥
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rsakey2 = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/ka/private.pem").read())
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signer = Signature_pkcs1_v1_5.new(rsakey2)
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digest = SHA.new()
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if mode.get()=="rsa":
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# fpk=open("C:/Users/Shinelon/Desktop/综合实验/kb/public.pem", 'rb')
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# pk=fpk.read()
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# fpk.close()
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# fpr=open("C:/Users/Shinelon/Desktop/综合实验/kb/private.pem", 'rb')
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# pr=fpr.read()
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# fpr.close
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rsakey = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/kb/public.pem").read())
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cipher = Cipher_pkcs1_v1_5.new(rsakey) #创建用于执行pkcs1_v1_5加密或解密的密码
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# cipher_text = base64.b64encode(cipher.encrypt(message.encode('utf-8')))
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f=open(path.get(),"rb")
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for line in f:
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# print(pr.decode("utf-8"))
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digest.update(line)
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crypto=base64.b64encode(cipher.encrypt(line))
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size=len(crypto)
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client.send(str(size).encode("utf-8"))
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client.send(crypto)
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f.close()
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sign=signer.sign(digest)
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Signature=base64.b64encode(sign)
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client.send(' '.encode("utf-8")) #停止接收文件，开始接收摘要
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# client.send(str(len(Signature)).encode("utf-8"))
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client.send(str(len(Signature)).encode("utf-8"))
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client.send(Signature)
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#AES
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elif mode.get()=="aes":
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fk=open("C:/Users/Shinelon/Desktop/综合实验/ka/aeskey.pem", 'rb')
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AESKEY=fk.read()
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fk.close()
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rsakey = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/kb/public.pem").read())
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cipher = Cipher_pkcs1_v1_5.new(rsakey)
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crypto=base64.b64encode(cipher.encrypt(AESKEY))
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client.send(str(len(crypto)).encode("utf-8"))
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client.send(crypto)
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model = AES.MODE_ECB
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aes = AES.new(add_to_16(AESKEY),model)
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f=open(path.get(),"rb")
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for line in f:
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# print(pr.decode("utf-8"))
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digest.update(line)
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crypto=add_to_16(line)
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crypto=aes.encrypt(crypto)
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crypto=base64.encodebytes(crypto).decode().strip()
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size=len(crypto)
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s=len(str(size))
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client.send(str(s).encode("utf-8"))
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client.send(str(size).encode("utf-8"))
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client.send(crypto.encode("utf-8"))
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f.close()
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sign=signer.sign(digest)
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Signature=base64.b64encode(sign)
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client.send(' '.encode("utf-8")) #停止接收文件，开始接收摘要
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# client.send(str(len(Signature)).encode("utf-8"))
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client.send(str(len(Signature)).encode("utf-8"))
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client.send(Signature)
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root = Tk()
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path = StringVar()
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mode1=StringVar()
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result=StringVar()
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mode=StringVar()
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root.title("server")
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def selectPath():
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path_ = askopenfilename()
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path.set(path_)
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def createkey():
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(pubkey, privkey) = rsa.newkeys(1024)
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# 生成公钥
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pub = pubkey.save_pkcs1()
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pubfile = open("C:/Users/Shinelon/Desktop/综合实验/ka/public.pem", 'wb')
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pubfile.write(pub)
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pubfile.close()
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# 生成私钥
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pri = privkey.save_pkcs1()
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prifile = open("C:/Users/Shinelon/Desktop/综合实验/ka/private.pem", 'wb')
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prifile.write(pri)
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prifile.close()
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def t2():
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server = socket.socket()
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server.bind(("localhost", 6969)) # 绑定监听端口
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server.listen(5) # 监听
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print("监听开始..")
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while True:
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conn, addr = server.accept() # 等待连接
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print("conn:", conn, "\naddr:", addr) # conn连接实例
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# while True:
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sn=conn.recv(2)
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fname=conn.recv(int(sn))
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filename=fname.decode("utf-8")
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fl=filename.split("/")
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fl[5]="b2a"+fl[5]
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filename="/".join(fl)
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mode=conn.recv(3)
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mode=mode.decode("utf-8")
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mode1.set(mode)
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if mode=="rsa":
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f=open(filename,"wb")
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rsakey = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/ka/private.pem").read())
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cipher = Cipher_pkcs1_v1_5.new(rsakey)
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# received_size=0
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while True:
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size=conn.recv(3)
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size=size.decode("utf-8")
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if size!=' ':
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size=int(size)
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data=conn.recv(size)
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data=cipher.decrypt(base64.b64decode(data), "解密失败")
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f.write(data)
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else:
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break
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f.close()
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sl=conn.recv(3)
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Signature=conn.recv(int(sl.decode("utf-8")))
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rsakey2 = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/kb/public.pem").read())
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verifier = Signature_pkcs1_v1_5.new(rsakey2)
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hsmsg = SHA.new()
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f=open(filename,"rb")
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for line in f:
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hsmsg.update(line)
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f.close()
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is_verify = verifier.verify(hsmsg, base64.b64decode(Signature.decode("utf-8")))
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if is_verify:
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result.set("文件未被篡改")
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else:
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result.set("文件可能被篡改")
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elif mode=="aes":
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#获取密钥
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kl=conn.recv(3)
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kl=int(kl.decode("utf-8"))
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key=conn.recv(kl)
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rsakey = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/ka/private.pem").read())
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cipher = Cipher_pkcs1_v1_5.new(rsakey)
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AESKEY=cipher.decrypt(base64.b64decode(key), "解密失败")
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model = AES.MODE_ECB
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aes = AES.new(add_to_16(AESKEY),model)
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f=open(filename,"wb")
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while True:
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s=conn.recv(1)
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s=s.decode("utf-8")
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if s!=' ':
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s=int(s)
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size=conn.recv(s)
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size=size.decode("utf-8")
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size=int(size)
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data=conn.recv(size)
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data=base64.decodebytes(data)
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data=str(aes.decrypt(add_to_16(data)),encoding="GBK").strip('\0')
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f.write(data.encode("GBK"))
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else:
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break
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f.close()
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sl=conn.recv(3)
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Signature=conn.recv(int(sl.decode("utf-8")))
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# Signature=conn.recv(172)
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rsakey2 = RSA.importKey(open("C:/Users/Shinelon/Desktop/综合实验/kb/public.pem").read())
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verifier = Signature_pkcs1_v1_5.new(rsakey2)
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hsmsg = SHA.new()
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f=open(filename,"rb")
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for line in f:
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hsmsg.update(line)
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f.close()
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is_verify = verifier.verify(hsmsg, base64.b64decode(Signature.decode("utf-8")))
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if is_verify:
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result.set("文件未被篡改")
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else:
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result.set("文件可能被篡改")
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if 1==2:
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break
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server.close()
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def add_to_16(par):
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# par = par.encode() #先将字符串类型数据转换成字节型数据
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while len(par) % 16 != 0: #对字节型数据进行长度判断
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par += b'\x00' #如果字节型数据长度不是16倍整数就进行 补充
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return par
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def tt():
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mode.set(m.get())
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t3=threading.Thread(target=a.t3)
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t3.start()
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Label(root,text = "发送:").grid(row = 0, column = 0)
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Entry(root, textvariable = path).grid(row = 1, column = 1)
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Button(root, text = "路径选择", command = selectPath).grid(row = 1, column = 0)
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Label(root,text = "加密模式:").grid(row = 2, column = 0)
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m=Entry(root, textvariable = mode)
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m.grid(row = 2, column = 1)
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Button(root,text="生成密钥",command=createkey).grid(row=3,column=0)
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Button(root,text="发送" ,command=tt).grid(row=3,column=1)
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Label(root,text = "接收:").grid(row = 4, column = 0)
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Label(root,text = "加密模式:").grid(row = 5, column = 0)
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Entry(root, textvariable = mode1).grid(row = 5, column = 1)
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Label(root,text = "验证结果:").grid(row = 6, column = 0)
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Entry(root, textvariable = result).grid(row = 6, column = 1)
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t2=threading.Thread(target=t2)
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t2.start()
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root.mainloop()
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