def sendMail():
friend = efriend.get() #发给谁
sendStr = esend.get() #发送的消息
#用MD5生成消息摘要
abstract = MD5.md5(sendStr)
#用RSA算法对消息摘要进行签名
signal1 = RSA.sign(str(abstract))
#生成消息
message = sendStr + '@' + str(signal1)
#用RC4算法对消息进行加密
key = "569716548"
box = RC4.init_box(key)
cipher = RC4.ex_encrypt(message, box)
#发送消息
sendStr = friend + ":" + cipher
ck.send(sendStr.encode("utf-8"))
out_put = md5.hex_digest()
print out_put
end = time.clock()
print('--------------------------MD5 end--------------------------\n')
print('Cost ' + str(end - start) + 's\n')
costdic[choose] = end - start
elif choose == 7:
print('--------------------------RC4--------------------------\n')
mode = raw_input("1 Encrypt or 2 Decode \n")
if mode == '1':
start = time.clock()
message = RC4.get_message()
key = RC4.get_key()
box = RC4.init_box(key)
RC4.ex_encrypt(message, box, mode)
end = time.clock()
elif mode == '2':
message = RC4.get_message()
key = RC4.get_key()
box = RC4.init_box(key)
RC4.ex_encrypt(message, box, mode)
print('--------------------------RC4 end--------------------------\n')
print('Cost ' + str(end - start) + 's\n')
costdic[choose] = end - start
elif choose == 8:
print('--------------------------A5--------------------------\n')
choice = raw_input("1 Encrypt or 2 Decode \n")
if choice == '1':
