## Two Easy Ways to Factor RSA

In this post, we give some underlying about two easy factorization methods under some specified circumstances.

## Writeup for GxzyCTF by X1cT34m

Writeup, by X1cT34m, for several problems in 2020 高校战“疫”网络安全分享赛 (2020-03-07 09:00 +48h).

## Intended Solution to NHP in GxzyCTF 2020

Leaked length information on the nonce $k$ could be exploited to break DSA.

## Intended Solution to Crypto Problems in VN Open Competition

VN公开赛前三道Crypto题的出题思路

## Intended Solution to GGH in GYCTF 2020

Break a 150-D GGH cryptosystem using Nguyen’s Attack by reducing the problem to a special CVP which is much easier than the general problem.

## Writeup for Crypto Problems in hgame 2020

Brief writeup for all the crypto challenges in hgame 2020.

## [Mirror] An Introduction to NTRUEncrypt Through a CTF Challenge

A gentle introduction to lattice cryptography by solving a 2-D NTRUEncrypt CTF challenge.

## Notes on “An Introduction to Mathematical Cryptography”

"An Introduction to Mathematical Cryptography" 读书笔记 （没写完，有空再更新）

## Intended Solution to Crypto Problems in NCTF 2019

19年南邮校赛NCTF所有Crypto题的预期解

## Writeup for 中国技能大赛——全国网络安全管理职业技能竞赛 2019

Writeup for several problems in 2019 中国技能大赛——全国网络安全管理职业技能竞赛 初赛+决赛