type
Post
status
Published
date
May 29, 2023
slug
CISCN2023
summary
国赛、CISCN2023
tags
Crypto
CTF
category
CRYPTO
icon
password
基于国密SM2算法的密钥分发
非预期,直接search能找到明文
curl -d "name=ha&school=hznu&phone=110" http://123.56.244.196:30817/api/login
curl -d "id=984aeb58-a758-43f5-b321-acdb7cbd534e&publicKey=B9C9A6E04E9C91F7BA880429273747D7EF5DDEB0BB2FF6317EB00BEF331A83081A6994B8993F3F5D6EADDDB81872266C87C018FB4162F5AF347B483E24620207" http://123.56.244.196:30817/api/allkey
curl -d "id=984aeb58-a758-43f5-b321-acdb7cbd534e" http://123.56.244.196:30817/api/search
curl -d "id=984aeb58-a758-43f5-b321-acdb7cbd534e&quantumString=8eaa7070bcf3d39d7b39db030ea81165" http://123.56.244.196:30817/api/check

可信度量
非预期,之前一次国赛也是差不多,直接查找flag
因为没有权限不能直接grep,提示player.sh是通过root运行,修改player.sh
grep -ra "flag" /
运行player.sh

Sign_in_passwd
base64变表,表通过url编码解密

BB84
先把表格里的数据提出来,进行纠错
如果EPC1是1或2,则表示APD1是1或ADP2是1,且ADP只有一个为1
同理如果EPC1是3或4,则表示APD3是1或ADP4是1,且ADP只有一个为1
上述如果成功,则EPC1是1或3则密钥赋值0,2或4则赋值1
得到密钥串,通过线性同余方程(
x_n = (A * x_n-1 + B) % M
)得到索引串M为密钥串长度
得到正确密钥之后跟密文异或得到flag
import binascii from Crypto.PublicKey import RSA from gmpy2 import gcd from math import * from Crypto.Util.number import * EPC1 = [4, 2, 2, 1, 1, 4, 4, 2, 4, 2, 1, 4, 2, 1, 3, 1, 3, 3, 2, 2, 3, 1, 2, 1, 2, 2, 2, 1, 1, 3, 3, 4, 4, 4, 1, 2, 3, 2, 3, 1, 1, 4, 2, 2, 1, 2, 2, 2, 3, 4, 1, 4, 4, 4, 1, 2, 3, 3, 4, 2, 2, 1, 2, 2, 4, 3, 4, 1, 4, 3, 2, 4, 3, 4, 3, 1, 1, 3, 3, 4, 2, 4, 4, 4, 3, 2, 1, 4, 1, 2, 3, 2, 3, 4, 3, 4, 1, 2, 3, 2, 1, 3, 3, 3, 2, 1, 1, 4, 4, 2, 3, 3, 2, 2, 1, 3, 1, 2, 1, 1, 4, 1, 1, 1, 1, 2, 1, 2, 1, 2, 3, 2, 4, 2, 2, 3, 4, 2, 4, 4, 4, 2, 3, 3, 1, 2, 2, 1, 3, 4, 2, 3, 2, 3, 1, 1, 3, 3, 1, 4, 2, 4, 1, 1, 1, 3, 3, 3, 1, 3, 1, 4, 2, 4, 4, 1, 4, 3, 3, 2, 4, 1, 1, 3, 2, 3, 3, 3, 2, 4, 2, 4, 2, 4, 3, 3, 3, 3, 2, 2, 1, 4, 4, 2, 4, 2, 4, 1, 2, 2, 2, 4, 2, 1, 2, 3, 3, 3, 1, 3, 1, 3, 2, 2, 1, 1, 1, 4, 4, 3, 1, 2, 2, 3, 4, 4, 2, 4, 3, 3, 2, 2, 2, 3, 1, 1, 4, 4, 3, 1, 4, 4, 1, 3, 4, 2, 4, 3, 1, 2, 3, 4, 4, 1, 4, 3, 2, 4, 2, 1, 4, 4, 3, 2, 2, 3, 4, 4, 2, 2, 1, 2, 1, 2, 2, 1, 4, 4, 4, 2, 2, 2, 1, 3, 2, 4, 1, 1, 3, 3, 1, 1, 2, 3, 4, 2, 4, 2, 2, 1, 1, 4, 2, 1, 1, 4, 3, 4, 1, 2, 1, 1, 2, 2, 2, 2, 4, 4, 3, 3, 4, 3, 4, 4, 3, 4, 1, 4, 1, 2, 2, 4, 4, 3, 1, 1, 2, 2, 1, 3, 1, 2, 4, 4, 2, 3, 1, 3, 1, 3, 4, 3, 2, 3, 3, 1, 2, 2, 2, 1, 3, 2, 4, 3, 4, 4, 3, 4, 3, 2, 2, 1, 2, 2, 3, 1, 1, 4, 4, 2, 4, 4, 2, 3, 2, 4, 2, 2, 1, 1, 1, 3, 2, 4, 3, 4, 3, 1, 2, 2, 3, 1, 3, 2, 1, 2, 2, 4, 3, 1, 4, 3, 1, 3, 3, 4, 2, 4, 3, 4, 3, 4, 2, 3, 1, 3, 4, 1, 3, 1, 1, 4, 3, 4, 3, 1, 2, 2, 3, 3, 2, 4, 2, 4, 2, 3, 2, 2, 1, 2, 4, 4, 1, 3, 4, 4, 2, 2, 1, 2, 2, 3, 2, 4, 1, 2, 1, 2, 3, 1, 1, 3, 1, 2, 3, 4, 3, 3, 4, 1, 3, 3, 3, 2, 2, 2, 1, 4, 1, 3, 4, 1, 4, 1, 2, 3, 2, 2, 1, 3, 2, 4, 3, 3, 1, 1, 2, 1, 1, 1, 3, 1, 2, 2, 4, 4, 3, 2, 1, 1, 3, 3, 3, 2, 2, 2, 3, 3, 3, 2, 3, 3, 1, 1, 2, 1, 1, 2, 3, 2, 4, 2, 1, 4, 1, 4, 4, 3, 3, 4, 2, 1, 4, 1, 3, 1, 2, 1, 1, 3, 4, 2, 3, 2, 1, 3, 3, 1, 2, 1, 4, 2, 1, 1, 4, 1, 1, 3, 3, 2, 3, 4, 1, 2, 1, 3, 1, 3, 1, 3, 4, 3, 3, 1, 1, 2, 4, 2, 4, 1, 3, 1, 1, 3, 4, 3, 1, 2, 4, 4, 4, 4, 1, 4, 2, 3, 4, 4, 1, 3, 3, 2, 3, 1, 4, 2, 1, 2, 1, 3, 2, 1, 4, 2, 1, 3, 1, 4, 2, 2, 4, 2, 4, 3, 2, 2, 1, 3, 4, 2, 2, 3, 4, 4, 4, 4, 3, 4, 3, 4, 3, 1, 1, 4, 4, 3, 4, 2, 3, 3, 3, 1, 1, 4, 1, 1, 1, 1, 1, 2, 1, 4, 1, 2, 3, 4, 2, 4, 4, 4, 4, 3, 1, 1, 4, 3, 1, 2, 4, 1, 3, 3, 4, 4, 4, 1, 3, 1, 3, 1, 1, 4, 3, 2, 4, 4, 2, 1, 3, 3, 2, 3, 1, 1, 4, 1, 2, 2, 1, 2, 2, 3, 4, 4, 1, 1, 1, 4, 2, 4, 2, 3, 2, 4, 2, 4, 1, 2, 2, 1, 3, 3, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 4, 3, 1, 4, 3, 1, 1, 2, 2, 2, 2, 3, 3, 3, 2, 4, 2, 1, 1, 1, 4, 4, 4, 1, 4, 3, 3, 3, 4, 1, 1, 2, 4, 2, 3, 4, 2, 4, 2, 2, 4, 2, 1, 1, 1, 3, 3, 3, 3, 3, 1, 4, 1, 1, 4, 3, 1, 1, 4, 1, 2, 1, 1, 3, 1, 3, 2, 1, 4, 2, 4, 3, 2, 4, 1, 1, 1, 1, 2, 4, 1, 2, 1, 1, 1, 3, 4, 2, 2, 1, 2, 3, 2, 4, 2, 3, 2, 1, 4, 1, 3, 2, 2, 1, 4, 2, 3, 3, 3, 4, 2, 3, 3, 1, 1, 2, 3, 3, 4, 1, 1, 1, 3, 4, 1, 2, 2, 2, 2, 3, 3, 4, 3, 2, 4, 1, 3, 3, 4, 1, 3, 3, 2, 1, 4, 4, 1, 4, 1, 1, 4, 4, 3, 2, 1, 1, 1, 2, 1, 3, 1, 3, 3, 4, 3, 2, 1, 2, 1, 3, 3, 3, 2, 3, 2, 1, 1, 1, 3, 2, 4, 3, 4, 3, 3, 3, 4, 3, 1, 1, 2, 2, 2, 4, 3, 4, 1, 4, 3, 3, 1, 4, 3, 2, 3, 3, 2, 2, 2, 2, 1, 2, 3, 3, 2, 2, 1, 1, 3, 4, 2, 1, 1, 2, 3, 3, 2, 4, 1, 4, 2, 3, 3, 3, 1, 1, 2, 1, 4, 4, 1, 1, 1, 4, 3, 3, 2, 2, 1, 2, 4, 2, 2, 3, 4, 1, 2, 1, 4, 3, 1, 3, 1, 2, 2, 2, 4, 2, 3, 2, 3, 4, 3, 3, 1, 4, 3, 1, 2, 1, 3, 3, 2, 2, 2, 1, 2, 1, 4, 3, 2, 3, 2, 3, 3, 1, 3, 1, 1, 4, 4, 4, 2, 2, 4, 1, 2, 1, 1, 3, 3, 4, 1, 3, 3, 3, 3, 2, 2, 2, 1, 2, 3, 2, 1, 2, 2, 1, 1, 3, 1, 4, 3, 2, 3, 3, 1, 3, 1, 2, 3, 1, 2, 3, 4, 2, 3, 2, 3, 1, 1, 2, 2, 4, 1, 1, 2, 4, 2, 1, 2, 3, 4, 4, 1, 3, 2, 1, 3, 3, 3, 4, 1, 3, 2, 2, 1, 1, 4, 2, 3, 1, 4, 4, 3, 3, 1, 3, 1, 4, 2, 4, 4, 4, 1, 4, 4, 2, 3, 4, 3, 2, 1, 4, 1, 2, 4, 3, 4, 4, 3, 1, 4, 4, 3, 2, 1, 3, 3, 2, 3, 4, 1, 4, 4, 1, 3, 1, 2, 1, 1, 1, 1, 2, 2, 3, 3, 4, 3, 4, 4, 1, 2, 3, 1, 1, 3, 2, 2, 2, 3, 2, 4, 4, 1, 4, 4, 1, 2, 2, 3, 4, 4, 4, 1, 3, 2, 1, 1, 2, 1, 4, 1, 2, 2, 3, 4, 3, 4, 4, 2, 2, 3, 2, 3, 3, 1, 1, 4, 3, 3, 2, 1, 2, 2, 1, 1, 4, 4, 3, 2, 1, 1, 4, 3, 3, 2, 1, 3, 3, 3, 4, 4, 4, 3, 3, 3, 2, 4, 2, 4, 1, 1, 2, 1, 1, 4, 2, 4, 4, 3, 1, 1, 1, 3, 3, 1, 4, 4, 1, 2, 3, 1, 4, 3, 2, 1, 3, 3, 3, 2, 4, 3, 4, 1, 1, 3, 3, 1, 2, 2, 4, 1, 3, 2, 4, 3, 2, 4, 1, 1, 3, 4, 2, 2, 2, 1, 4, 3, 1, 3, 4, 1, 2, 4, 1, 1, 1, 2, 2, 4, 4, 1, 1, 4, 3, 2, 1, 4, 1, 3, 3, 3, 4, 3, 2, 1, 2, 2, 1, 2, 4, 4, 2, 3, 3, 1, 2, 3, 4, 1, 1, 2, 1, 2, 1, 3, 3, 4, 3, 1, 1, 3, 2, 2, 4, 1, 3, 3, 4, 4, 3, 2, 1, 3, 3, 2, 3, 2, 4, 1, 4, 1, 3, 1, 2, 4, 4, 2, 3, 1, 2, 1, 1, 2, 1, 2, 3, 1, 4, 1, 4, 1, 2, 2, 4, 3, 3, 2, 2, 3, 1, 1, 2, 2, 2, 4, 3, 3, 1, 2, 2, 3, 4, 1, 2, 3, 3, 3, 3, 3, 3, 1, 1, 3, 3, 2, 2, 4, 4, 2, 2, 1, 4, 1, 2, 4, 4, 2, 2, 2, 3, 2, 3, 3, 1, 4, 1, 3, 2, 1, 2, 3, 2, 1, 1, 4, 4, 1, 3, 4, 4, 3, 1, 3, 2, 3, 2, 4, 2, 3, 1, 4, 4, 4, 4, 3, 1, 1, 2, 1, 3, 2, 1, 4, 4, 2, 2, 1, 4, 3, 3, 2, 1, 3, 4, 4, 1, 2, 2, 1, 3, 3, 2, 3, 3, 4, 3, 3, 2, 2, 3, 1, 2, 4, 3, 1, 2, 3, 2, 4, 1, 1, 1, 2, 2, 1, 2, 3, 3, 4, 1, 1, 2, 1, 1, 4, 3, 2, 3, 4, 1, 2, 1, 4, 2, 3, 4, 1, 3, 2, 1, 1, 2, 2, 2, 3, 4, 2, 1, 2, 1, 2, 2, 1, 1, 2, 4, 4, 1, 4, 2, 1, 4, 3, 4, 2, 1, 1, 1, 2, 4, 4, 2, 4, 2, 1, 1, 4, 2, 2, 4, 2, 3, 3, 3, 3, 4, 3, 2, 1, 1, 1, 3, 2, 2, 4, 3, 2, 3, 1, 4, 3, 1, 4, 4, 3, 2, 2, 3, 1, 3, 1, 1, 2, 3, 3, 4, 1, 3, 2, 3, 4, 2, 3, 3, 3, 2, 4, 2, 1, 4, 4, 1, 1, 1, 4, 2, 4, 3, 2, 4, 3, 2, 2, 3, 3, 1, 1, 4, 2, 1, 3, 3, 1, 1, 2, 4, 2, 4, 3, 1, 4, 3, 2, 2, 4, 2, 1, 1, 1, 1, 4, 4, 1, 3, 2, 2, 1, 1, 1, 3, 1, 1, 1, 4, 3, 4, 1, 2, 3, 2, 1, 4, 4, 2, 4, 1, 2, 1, 4, 3, 1, 3, 2, 2, 1, 4, 1, 1, 4, 3, 1, 2, 3, 4, 1, 4, 1, 3, 2, 3, 1, 3, 1, 3, 2, 2, 4, 3, 3, 4, 3, 1, 4, 1, 2, 1, 3, 2, 1, 3, 1, 4, 1, 4, 2, 2, 1, 2, 4, 4, 2, 2, 2, 1, 3, 2, 3, 2, 3, 1, 2, 1, 3, 1, 2, 3, 1, 4, 1, 4, 3, 4, 2, 3, 3, 4, 1, 1, 3, 3, 3, 4, 4, 2, 3, 2, 2, 1, 2, 2, 3, 1, 3, 4, 3, 2, 2, 3, 3, 4, 4, 1, 1, 2, 2, 4, 3, 1, 2, 3, 4, 1, 4, 2, 3, 2, 2, 1, 1, 1, 1, 1, 4, 4, 2, 2, 1, 1, 2, 2, 1, 4, 4, 2, 3, 1, 2, 3, 2, 2, 1, 3, 1, 1, 3, 2, 1, 3, 3, 1, 1, 1, 4, 3, 2, 2, 2, 2, 1, 3, 4, 1, 1, 4, 2, 4, 4, 1, 2, 2, 3, 2, 3, 1, 2, 3, 4, 4, 2, 3, 4, 4, 2, 2, 4, 3, 2, 4, 1, 1, 3, 2, 4, 4, 4, 1, 2, 3, 4, 3, 4, 1, 2, 4, 1, 2, 2, 2, 3, 3, 2, 4, 4, 1, 2, 1, 3, 3, 1, 2, 3, 1, 2, 4, 4, 1, 3, 2, 4, 4, 1, 4, 2, 2, 1, 2, 1, 2, 4, 2, 3, 3, 4, 4, 2, 2, 1, 2, 4, 4, 2, 1, 1, 3, 3, 1, 1, 1, 3, 1, 1, 2, 1, 4, 2, 4, 3, 1, 1, 2, 1, 3, 2, 2, 3, 2, 3, 1, 4, 3, 2, 3, 1, 3, 3, 2, 1, 1, 2, 1, 4, 3, 4, 4, 1, 2, 4, 3, 3, 2, 1, 1, 3, 2, 4, 2, 1, 1, 3, 2, 1, 4, 3, 1, 1, 3, 4, 1, 2, 2, 1, 1, 2, 3, 2, 2, 4, 3, 2, 4, 3, 1, 4, 4, 1, 1, 3, 4, 4, 2, 4, 3, 3, 2, 4, 4, 1, 3, 4, 2, 4, 3, 3, 1, 4, 1, 3, 2, 4, 4, 1, 4, 1, 1, 3, 1, 2, 1, 1, 4, 2, 2, 4, 2, 1, 2, 3, 2, 2, 1, 1, 3, 2, 2, 2, 2, 3, 2, 4, 3, 2, 3, 4, 4, 4, 2, 2, 2, 4, 1, 3, 1, 4, 3, 1, 4, 2, 4, 2, 4, 1, 3, 1, 4, 1, 1, 2, 4, 4, 1, 1, 2, 2, 2, 3, 2, 3, 2, 2, 2, 3, 4, 2, 2, 2, 4, 4, 2, 3, 2, 4, 4, 3, 1, 4, 2, 1, 1, 1, 1, 3, 2, 4, 2, 3, 3, 4, 3, 1, 1, 1, 2, 1, 4, 3, 4, 1, 3, 1, 3, 2, 3, 1, 3, 3, 2, 1, 2, 1, 2, 4, 2, 1, 3, 1, 2, 3, 4, 1, 3, 1, 4, 2, 2, 4, 2, 4, 4, 2, 4, 2, 1, 4, 2, 4, 3, 4, 4, 1, 4, 1, 1, 4, 1, 2, 4, 2, 1, 3, 1, 1, 1, 2, 2, 2, 2, 4, 2, 1, 1, 1, 4, 4, 1, 4, 4, 2, 3, 3, 3, 1, 3, 4, 3, 1, 1, 3, 2, 3, 1, 1, 3, 2, 2, 3, 1, 4, 1, 3, 4, 4, 3, 1, 4, 4, 1, 4, 2, 2, 4, 3, 1, 4, 3, 2, 3, 3, 1, 4, 4, 1, 4, 1, 3, 1, 4, 4, 2, 2, 2, 4, 1, 1, 4, 3, 4, 1, 2, 4, 4, 3, 2, 4, 1, 3, 4, 2, 1, 2, 2, 4, 3, 1, 3, 4, 4, 1, 2, 1, 1, 3, 4, 4, 1, 1, 3, 4, 3, 1, 2, 2, 2, 1, 3, 4, 4, 1, 2, 2, 3, 3, 4, 1, 4, 1, 1, 1, 4, 2, 2, 3, 4, 2, 3, 1, 3, 4, 3, 4, 4, 1, 3, 1, 2, 2, 4, 3, 4, 1, 3, 3, 3, 1, 4, 1, 4, 1, 3, 2, 1, 3, 2, 4, 3, 2, 4, 3, 4, 2, 2, 1, 4, 4, 4, 4, 3, 2, 2, 1, 1, 2, 1, 2, 4, 4, 1, 1, 3, 3, 1, 2, 1, 2, 4, 2, 3, 3, 4, 1, 1, 1, 2, 1, 2, 3, 2, 2, 1, 4, 2, 2, 2, 2, 4, 1, 4, 4, 2, 3, 2, 1, 4, 2, 3, 3, 1, 2, 2, 2, 3, 3, 4, 4, 4, 1, 4, 4, 1, 3, 3, 2, 4, 4, 4, 1, 3, 1, 2, 2, 3, 2, 4, 2, 3, 2, 4, 4, 1, 3, 3, 3, 4, 4, 2, 4, 4, 4, 4, 1, 4, 4, 4, 2, 1, 1, 1, 3, 1, 1, 3, 1, 2, 2, 4, 1, 3, 2, 2, 1, 3, 4, 4, 4, 2, 2, 1, 3, 4, 2, 1, 2, 2, 2, 3, 3, 4, 2, 3, 3, 4, 1, 3, 4, 2, 1, 3, 3, 4, 3, 1, 4, 2, 1, 1, 2, 3, 1, 3, 3, 3, 3, 3, 2, 1, 1, 3, 3, 2, 3, 4, 2, 1, 4, 4, 2, 4, 2, 2, 4, 4, 3, 1, 2, 2, 1, 1, 3, 1, 2, 4, 1, 3, 1, 2, 4, 1, 4, 4, 3, 2, 4, 1, 1, 2, 2, 2, 2, 1, 2, 4, 1, 1, 3, 4, 1, 4, 2, 1, 3, 3, 2, 4, 4, 3, 1, 3, 1, 1, 1, 3, 1, 3, 4, 1, 2, 2, 1, 1, 3, 3, 1, 3, 4, 4, 1, 3, 1, 1, 2, 2, 2, 2, 1, 1, 1, 2, 2, 1, 1, 2, 4, 2, 4, 1, 4, 4, 3, 3, 1, 1, 1, 4, 2, 1, 2, 3, 2, 4, 1, 1, 1, 1, 1, 3, 1, 4, 1, 4, 4, 2, 1, 1, 2, 1, 2, 2, 2, 4, 2, 2, 1, 4, 4, 4, 3, 2, 1, 2, 1, 2, 3, 4, 3, 4, 4, 2, 2, 1, 1, 1, 3, 3, 3, 2, 4, 3, 4, 2, 3, 1, 4, 1, 2, 1, 1, 3, 1, 1, 2, 3, 4, 2, 4, 4, 1, 3, 2, 1, 3, 4, 4, 2, 3, 2, 3, 2, 4, 1, 4, 1, 3, 4, 2, 3, 1, 4, 4, 2, 2, 3, 1, 1, 2, 2, 2, 4, 2, 3, 4, 2, 1, 2, 2, 1, 1, 4, 3, 1, 2, 1, 4, 1, 2, 3, 1, 3, 3, 2, 3, 3, 2, 1, 4, 2, 3, 3, 1, 1, 3, 2, 1, 4, 4, 2, 1, 1, 1, 4, 4, 1, 4, 2, 1, 1, 4, 4, 1, 3, 4, 2, 3, 3, 2, 3, 2, 2, 1, 2, 4, 1, 1, 3, 2, 3, 1, 1, 4, 3, 4, 4, 3, 2, 3, 1, 4, 3, 3, 4, 2, 4, 1, 2, 1, 3, 2, 1, 2, 3, 1, 3, 3, 4, 1, 4, 3, 1, 1, 2, 4, 3, 1, 4, 1, 4, 2, 2, 2, 4, 1, 1, 1, 3, 4, 4, 1, 4, 1, 3, 4, 4, 3, 2, 1, 3, 1, 4, 4, 3, 1, 2, 1, 3, 4, 3, 4, 2, 1, 1, 1, 1, 1, 3, 1, 3, 3, 3, 1, 1, 1, 1, 4, 2, 4, 4, 1, 3, 3, 1, 3, 2, 3, 1, 2, 1] APD1 = [0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 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1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0] APD2 = [1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 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0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0] strr = '0b' for i in range(len(EPC1)): if EPC1[i] == 1: if (APD1[i] == 1 and APD2[i] == 0 and APD3[i] == 0 and APD4[i] == 0) or (APD1[i] == 0 and APD2[i] == 1 and APD3[i] == 0 and APD4[i] == 0): strr += '0' elif EPC1[i] == 2: if (APD1[i] == 0 and APD2[i] == 1 and APD3[i] == 0 and APD4[i] == 0) or (APD1[i] == 1 and APD2[i] == 0 and APD3[i] == 0 and APD4[i] == 0): strr += '1' elif EPC1[i] == 3: if (APD1[i] == 0 and APD2[i] == 0 and APD3[i] == 1 and APD4[i] == 0) or (APD1[i] == 0 and APD2[i] == 0 and APD3[i] == 0 and APD4[i] == 1): strr += '0' elif EPC1[i] == 4: if (APD1[i] == 0 and APD2[i] == 0 and APD3[i] == 0 and APD4[i] == 1) or (APD1[i] == 0 and APD2[i] == 0 and APD3[i] == 1 and APD4[i] == 0): strr += '1' strr = strr[2:] print(strr) print(len(strr)) envc = 0xD9F7E0F737D4BF641E83D35D201457272ECB952D31F660E8EA9B5A326C55AF011686ADB8F478D1BD3852 env = str(bin(envc))[2:] A = 1709 B = 2003 M = len(strr) x0 = 17 c = strr[x0] flag = '0b' for i in range(336): f = (A * x0 + B) % M x0 = f c += strr[f] for i in range(336): flag += str((int(c[i], 2) ^ int(env[i], 2)) % 2) print(long_to_bytes(int(flag, 2)))
- 作者:Putao0v0
- 链接:https://tangly1024.com/article/CISCN2023
- 声明:本文采用 CC BY-NC-SA 4.0 许可协议,转载请注明出处。
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