Intended solution to Sum, babySum, and Game in WMCTF 2020.
What if you have a server in the school intranet that can not be connected, via ssh, from outside? In this post, we introduce two methods to solve this problem – ssh tunnel and frp.
Our work for “天融信杯”第五届（2020年）全国高校密码数学挑战赛
Writeup for 3 crypto challenges in “第五空间” 智能安全大赛 2020 (2020-06-24 09:00 +12h).
- (easy) rosb: RSA common modulus attack
- (medium) UnSafeAES: AES-GCM nonce reuse && forbidden attack
- (interesting) tinysocks: redirect attack on Shadowsocks stream ciphers.
A plain record of the first half year of 2020, some feelings about the first internship, and a dazed plan.
Upgrade SageMath and solve several problems occurred during upgrading.
Ethereum has three trees: the state tree, the transaction tree, and the receipt tree. Why do we need three trees? Can we discard one of them? In this post, we explore the principles of the construction of the three trees.
Writeup for several problems in De1CTF 2020 by X1cT34m.
Something I want to do.