Account

Name
r.g.
Username
rsgelhar
Joined
April 27, 2022, 6:14 p.m.

Rank
68
Points
31,498
Trophies
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Active Challenges (1)

LevelNameAttemptsDate
Enigma Part 12 / 15May 17, 2022, 4:17 a.m.

Solved Challenges (85)

LevelNamePointsDate
BCR code (Book-Caesar-RSA)1,084May 25, 2022, 6:30 p.m.
Not-so-Secret Message from Malawi — Part II (ECC)1,080May 25, 2022, 4:54 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100May 24, 2022, 6:55 p.m.
ECDH-Key Exchange for Beginners100May 20, 2022, 6:58 p.m.
A really long number sequence1,081May 17, 2022, 7:35 p.m.
Summer Job1,107May 16, 2022, 5:07 a.m.
Reserve Hand Procedure — Part 1100May 15, 2022, 5:39 a.m.
Modified Caesar Cipher100May 15, 2022, 4:23 a.m.
Polyhomophonic Substitution — Part 1100May 14, 2022, 10:51 p.m.
M-138 — Part 31,090May 14, 2022, 9:45 p.m.
Enigma Part 21,080May 14, 2022, 9:26 p.m.
Enigma Messages with Repeated Letters — Part 5100May 14, 2022, 8:36 p.m.
Enigma Messages with Repeated Letters — Part 4100May 14, 2022, 8:28 p.m.
Enigma Messages with Repeated Letters — Part 3100May 14, 2022, 8:26 p.m.
Enigma Messages with Repeated Letters — Part 2100May 14, 2022, 8:17 p.m.
Enigma Messages with Repeated Letters — Part 1100May 14, 2022, 7:51 p.m.
Factorization Cipher — Part 31,082May 14, 2022, 4:42 a.m.
Playfair Encryption100May 13, 2022, 9:13 p.m.
Trifid Cipher100May 13, 2022, 8:37 p.m.
M-138 — Part 21,090May 13, 2022, 5:53 p.m.
M-138 — Part 1100May 13, 2022, 5:14 p.m.
Unusual encryption using a diophantine equation1,081May 12, 2022, 10:53 p.m.
Image Noise100May 12, 2022, 7:09 p.m.
The Book Code: A Challenge for Bookworms100May 12, 2022, 6:47 p.m.
Pigpen with a twist — Part 1100May 12, 2022, 6:28 p.m.
¿No Hablas Español? No problemo!100May 12, 2022, 5:38 p.m.
Hybrid Encryption I1,080May 12, 2022, 5:10 p.m.
How do you become a big cryptographer?100May 12, 2022, 5:45 a.m.
Snow White and the seven dwarfs100May 12, 2022, 4:52 a.m.
One-Time Pad with Flaws100May 12, 2022, 4:40 a.m.
A modified homophonic cipher with reduced alphabets — Part 2100May 12, 2022, 3:38 a.m.
A modified homophonic cipher with reduced alphabets — Part 1100May 12, 2022, 2:16 a.m.
Grille Cipher100May 12, 2022, 1:54 a.m.
Cracking SHA1-Hashed Passwords1,081May 12, 2022, 1:32 a.m.
Monoalphabetic Substitution100May 12, 2022, 12:33 a.m.
Number Sequence — Part 7100May 11, 2022, 10:19 p.m.
RSA Factoring Challenge: RSA-7040May 11, 2022, 8:29 p.m.
RSA Factoring Challenge: RSA-2100May 11, 2022, 8:28 p.m.
RSA Factoring Challenge: RSA-2200May 11, 2022, 8:28 p.m.
RSA Factoring Challenge: RSA-2300May 11, 2022, 8:27 p.m.
Partial Key Exposure with RSA — Part 11,082May 11, 2022, 8:26 p.m.
AES ECB Wrong Encoding1,104May 11, 2022, 5:28 p.m.
Monoalphabetic Substitution with Nostradamus Flavor1,113May 11, 2022, 4:17 p.m.
Find the right route — Part 1100May 11, 2022, 6:06 a.m.
RSA: Two different keys — same ciphertext1,081May 11, 2022, 5:24 a.m.
Smartcard RSA1,080May 11, 2022, 5:06 a.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,080May 11, 2022, 4:26 a.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,080May 11, 2022, 3:06 a.m.
Lightweight Introduction to Lattices — Part 31,133May 11, 2022, 1:37 a.m.
Factorization Cipher — Part 21,082May 10, 2022, 10:37 p.m.
Alice's Birthday Party (Part 2)1,080May 10, 2022, 9:14 p.m.
Alice's Birthday Party (Part 1)1,080May 10, 2022, 9:07 p.m.
Letter to the Templars — Part 31,084May 10, 2022, 9 p.m.
Broadcasting and low exponent — RSA Attack1,081May 10, 2022, 8:22 p.m.
From Russia with Love100May 10, 2022, 4:45 p.m.
Playfair with hints about the grid100May 9, 2022, 7:48 p.m.
Number Sequence — Part 6100May 9, 2022, 7:42 p.m.
A hidden word — Part 2100May 9, 2022, 7:40 p.m.
Number Sequence — Part 8100May 9, 2022, 7:28 p.m.
Wheatstone Cryptograph — Part 1100May 9, 2022, 7:25 p.m.
Lightweight Introduction to Lattices — Part 2100May 9, 2022, 4:48 a.m.
RSA Factoring Challenge: RSA-2320May 8, 2022, 10:22 p.m.
RSA Factoring Challenge: RSA-2400May 8, 2022, 10:22 p.m.
RSA Factoring Challenge: RSA-2500May 8, 2022, 10:22 p.m.
Cryptanalysis Hacking Puzzles — Part 2100May 8, 2022, 10:13 p.m.
Number Sequence — Part 9100May 8, 2022, 10:11 p.m.
Advent-Challenge — Part 1100May 8, 2022, 10:09 p.m.
Number Sequence — Part 10100May 8, 2022, 10:07 p.m.
Modular Sequences100May 8, 2022, 9:48 p.m.
Autokey Cipher100May 8, 2022, 5:44 p.m.
Cryptanalysis Hacking Puzzles — Part 1100May 8, 2022, 5:21 p.m.
Lightweight Introduction to Lattices — Part 1100May 8, 2022, 4:27 p.m.
Alberti Challenge - Part 1102May 8, 2022, 5:41 a.m.
Factorization Cipher — Part 1100May 8, 2022, 1:50 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100May 8, 2022, 1:36 a.m.
Letter to the Templars — Part 2100May 8, 2022, 1:33 a.m.
A hidden word100May 8, 2022, 1:30 a.m.
Number Sequence — Part 4100May 7, 2022, 7:11 p.m.
Number Sequence — Part 3100May 7, 2022, 7:07 p.m.
Letter to the Templars — Part 1100May 7, 2022, 7:06 p.m.
Beaver Code100May 7, 2022, 7 p.m.
Caesar Encryption100May 7, 2022, 6:53 p.m.
Number Sequence — Part 2100May 7, 2022, 6:11 p.m.
Original Caesar Cipher100May 7, 2022, 6:10 p.m.
Number Sequence100May 7, 2022, 6:05 p.m.

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