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Case Study: Trivial Attack and Nontrivial Attacks against DSS

 Mon Mar 16 2020  Thu Apr 2 2020  Cryptography  1326
In this post, we give a concise study of several attaks against DSS, including, reused $k$, $k$ generated via LCG, and lattice attack against short $k$.
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James Manger’s CCA on RSAES-OAEP

 Sat Mar 14 2020  Fri May 1 2020  Cryptography  749
Reproduction of James Manger’s chosen ciphertext attack on RSAES-OAEP under decryption oracle.
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Two Easy Ways to Factor RSA

 Sat Mar 14 2020  Fri May 1 2020  Cryptography  482
In this post, we give some underlying about two easy factorization methods under some specified circumstances.
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Writeup for GxzyCTF by X1cT34m

 Tue Mar 10 2020  Sat Apr 18 2020  Writeup  5846
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).
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Intended Solution to NHP in GxzyCTF 2020

 Tue Mar 10 2020  Wed Jan 13 2021  Writeup  1405
Leaked length information on the nonce $k$ could be exploited to break DSA.
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Intended Solution to Crypto Problems in VN Open Competition

 Mon Mar 2 2020  Tue Sep 15 2020  Writeup  965
VN公开赛前三道Crypto题的出题思路
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Intended Solution to GGH in GYCTF 2020

 Tue Feb 25 2020  Thu May 14 2020  Writeup  440
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.
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Writeup for Crypto Problems in hgame 2020

 Fri Feb 14 2020  Sat Apr 11 2020  Writeup  5326
Brief writeup for all the crypto challenges in hgame 2020.
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[Mirror] An Introduction to NTRUEncrypt Through a CTF Challenge

 Thu Feb 6 2020  Tue Sep 8 2020  Cryptography  638
A gentle introduction to lattice cryptography by solving a 2-D NTRUEncrypt CTF challenge.
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Notes on “An Introduction to Mathematical Cryptography”

 Tue Dec 10 2019  Mon Jan 11 2021  Notes  6049
"An Introduction to Mathematical Cryptography" 读书笔记 (没写完,有空再更新)
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