News

[dennis....@gmail.com]

My Discord server/channels and Discourse
https://discord.gg/uXuDAtBb
https://discourse.yurichev.com/

Topics: reverse engineering, math, CS, SAT, SMT...

My latest blog posts:

2022-Jul-24: [Math] Modulo inverse and the solution to the reverse engineering challenge #87
https://yurichev.org/modinv

2022-Jul-24: [Math] Factlets about integer factorization
https://yurichev.org/factor

2022-Jul-22: [SAT] Deducing CNF for multi-input XOR function
https://yurichev.org/XOR-CNF

2022-Jul-21: [Math] Exponentiation and binary logarithm for network administrators
https://yurichev.org/log2

2022-Jul-19: [RevEng][Math] Data compression and entropy
https://yurichev.org/entropy

2022-Jul-15: Using tabs
https://yurichev.org/tabs

2022-Jul-05: [Math][Python] Mixed radix, role-playing dices and PRNG
https://yurichev.org/mixed_radix

2022-Jul-05: [Russian] Как писать технические тексты
https://yurichev.org/writing

2022-Jun-18: [Crypto] Safe backups (or ransomware) using RSA/PGP/GnuPG/OpenSSL
https://yurichev.org/RSA_bak

2022-Jun-10: [Math] OEIS mirrored for local browsing
https://yurichev.org/OEIS

2022-May-18: [Crypto] RSA: how Chinese Remainder Theorem is used here
https://yurichev.org/RSA-CRT

2022-May-15: [Crypto] Birthday attack: yet another explanation
https://yurichev.org/birthday

2022-May-15: [Crypto] Low-exponent attack on RSA: an example
https://yurichev.org/RSA_low

2022-May-11: [Unix][Crypto] Simplest possible password manager
https://yurichev.org/password

2022-May-07: [Python][Math] Deciphering Uber rating
https://yurichev.org/uber

2022-May-06: [Lisp, ML, Haskell] Tail call/recursion/optimization
https://yurichev.org/tail

2022-Apr-30: ElGamal signature scheme
https://yurichev.org/ElGamal2

2022-Apr-27: ElGamal encryption system, cracking it using CADO-NFS
https://yurichev.org/ElGamal1

2022-Apr-16: [Math] Android lock screen (9 dots) has exactly 140240 possible ways to (un)lock it
https://yurichev.org/android

2022-Apr-13: Lisp notes
https://yurichev.org/lisp

2022-Apr-01: Trimming backups with logarithmic scale
https://yurichev.org/backups_log

22 Mar 2022
[Math] Drawing a circle, point-by-point, without floating point support
https://yurichev.com/news/20220322_circle/

22 Mar 2022
[Math] How I rented a flat with the help of calculus
https://yurichev.com/news/20220322_calculus_eng/

21 Mar 2022
[Unix] Using the 'uniq -c' command to get some statistics, part II
https://yurichev.com/news/20220321_uniq_II/

21 Mar 2022
[Math] Drawing clock with sin()/cos()
https://yurichev.com/news/20220321_sin_cos_clock/

25 Feb 2022
[Unix] Using the 'uniq -c' command to get some statistics
https://yurichev.com/news/20220225_uniq/

25 Feb 2022
[Crypto] Cracking Diffie–Hellman key exchange using CADO-NFS + Logjam SSL/TLS attack
https://yurichev.com/news/20220225_Diffie_Hellman/