Account

Name
Thomas
Username
vonk
Joined
Oct. 30, 2022, 11:41 a.m.

Points
65,797
Rank
35
Trophies
Gold0
Silver0
Bronze0

Progress
Level I Challenges
77 / 93
Level II Challenges
45 / 179
Level III Challenges
4 / 76
Level X Challenges
0 / 18

Solved Challenges (126)

LevelNamePointsDate
Weakened Granit — Part 1100April 1, 2023, 6:16 p.m.
Monoalphabetic Substitution with Camouflage — Part 51,081March 31, 2023, 4:59 p.m.
Monoalphabetic substitution with camouflage — Part 4100March 31, 2023, 4:42 p.m.
Monoalphabetic substitution with camouflage — Part 31,080March 31, 2023, 1:12 p.m.
Monoalphabetic substitution with camouflage — Part 1100March 31, 2023, 11:51 a.m.
Polyhomophonic Substitution — Part 1100March 30, 2023, 8:23 p.m.
Music Code — Part 1100March 30, 2023, 5:28 p.m.
The Josse Challenge – Part 21,327March 29, 2023, 5:57 p.m.
The Josse Challenge – Part 11,290March 29, 2023, 2:03 p.m.
Music Code — Part 21,079March 28, 2023, 5:23 p.m.
Number Sequence — Part 5100March 28, 2023, 3:40 p.m.
An Invisible Message100March 28, 2023, 2:18 p.m.
AES ECB Wrong Encoding1,099March 28, 2023, 1:48 p.m.
CMEA 213,006March 27, 2023, 12:33 p.m.
Playfair Encryption100March 27, 2023, 11:46 a.m.
Molehunt (Part 3/3)1,078March 26, 2023, 2:37 p.m.
Cascading Encryption — Part 1/3100March 24, 2023, 7:40 p.m.
Hill Cipher with Sudoku Key100March 24, 2023, 9:31 a.m.
Unusual encryption using a diophantine equation1,080March 23, 2023, 10:23 a.m.
Typex — Part 21,083March 22, 2023, 7:48 p.m.
Smartcard RSA1,078March 22, 2023, 11:36 a.m.
Merkle-Hellman Knapsack Challenge — Part 21,201March 21, 2023, 6:21 p.m.
Typex — Part 11,083March 20, 2023, 7:25 p.m.
ADFGVX — Part 2100March 20, 2023, 7:22 p.m.
ADFGVX — Part 1100March 20, 2023, 6:11 p.m.
Unconcealed RSA messages1,080March 20, 2023, 3:55 p.m.
Playfair with hints about the grid100March 20, 2023, 12:24 p.m.
Monoalphabetic Substitution with Nostradamus Flavor1,106March 20, 2023, noon
The Last Note100March 20, 2023, 8:44 a.m.
Multilingual Monoalphabetic Substitution100March 19, 2023, 8:25 p.m.
Partial Key Exposure with RSA — Part 11,081March 19, 2023, 9:51 a.m.
CMEA 11,078March 18, 2023, 6:15 p.m.
Turing Bombe Enigma I100March 14, 2023, 10:58 a.m.
Trifid Cipher100March 12, 2023, 5:55 p.m.
Enigma Part 21,078March 12, 2023, 4:27 p.m.
The Book Code: A Challenge for Bookworms100March 11, 2023, 9:47 p.m.
Enigma Messages100March 11, 2023, 6:58 p.m.
Enigma Part 11,078March 11, 2023, 6:34 p.m.
Enigma Combinatorics100March 10, 2023, 10:25 p.m.
Molehunt (Part 2/3)100March 10, 2023, 9:31 a.m.
Molehunt (Part 1/3)100March 9, 2023, 7:51 p.m.
Factorization Cipher — Part 31,080March 9, 2023, 6:59 p.m.
BCR code (Book-Caesar-RSA)1,082March 8, 2023, 7:47 p.m.
Enigma Messages with Repeated Letters — Part 5100March 7, 2023, 2:13 p.m.
Enigma Messages with Repeated Letters — Part 4100March 7, 2023, 2:11 p.m.
Enigma Messages with Repeated Letters — Part 3100March 7, 2023, 1:36 p.m.
Enigma Messages with Repeated Letters — Part 2100March 7, 2023, 1:23 p.m.
Cracking SHA1-Hashed Passwords1,079March 7, 2023, 9:36 a.m.
Enigma Messages with Repeated Letters — Part 1100March 6, 2023, 2:18 p.m.
Cryptanalysis Hacking Puzzles — Part 1100March 5, 2023, 4:22 p.m.
The LoRa Cipher: Logic Randomness — Part 11,115March 5, 2023, 2:50 p.m.
Lightweight Introduction to Lattices — Part 31,119March 5, 2023, 1:50 p.m.
Advent Challenge — Part 41,099March 4, 2023, 8:15 p.m.
Advent Challenge — Part 31,099March 4, 2023, 6:44 p.m.
Advent-Challenge — Part 21,099March 4, 2023, 6:26 p.m.
Find the right route — Part 1100March 4, 2023, 2:58 p.m.
Modular Sequences100March 4, 2023, 2:19 p.m.
A really long number sequence1,080March 4, 2023, 11:41 a.m.
Pigpen with a twist — Part 1100March 3, 2023, 6:24 p.m.
Nils away on travel100March 3, 2023, 4:32 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100March 2, 2023, 9:24 a.m.
Summer Job1,102March 1, 2023, 9:39 p.m.
Hybrid Encryption I1,078March 1, 2023, 8:39 p.m.
Fastest in the West1,102March 1, 2023, 8:12 p.m.
ECDH-Key Exchange for Beginners100March 1, 2023, 6:39 p.m.
Factorization Cipher — Part 21,080Feb. 23, 2023, 5:34 p.m.
¿No Hablas Español? No problemo!100Feb. 23, 2023, 4:17 p.m.
RSA Factoring Challenge: RSA-2100Feb. 23, 2023, 3:16 p.m.
RSA Factoring Challenge: RSA-2200Feb. 23, 2023, 3:15 p.m.
RSA Factoring Challenge: RSA-2300Feb. 23, 2023, 3:15 p.m.
RSA Factoring Challenge: RSA-2320Feb. 23, 2023, 3:13 p.m.
RSA Factoring Challenge: RSA-2400Feb. 23, 2023, 3:12 p.m.
RSA Factoring Challenge: RSA-2500Feb. 23, 2023, 3:11 p.m.
RSA Factoring Challenge: RSA-7040Feb. 23, 2023, 3:10 p.m.
AES key — encoded in the machine readable zone of a European ePassport1,081Feb. 23, 2023, 2:48 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,078Feb. 23, 2023, 12:42 p.m.
Alice's Birthday Party (Part 2)1,078Feb. 23, 2023, 11:33 a.m.
Alice's Birthday Party (Part 1)1,078Feb. 23, 2023, 10:53 a.m.
The Syllabary Cipher – Part 1101Feb. 23, 2023, 10:03 a.m.
RSA: Two different keys — same ciphertext1,080Feb. 22, 2023, 2:44 p.m.
Broadcasting and low exponent — RSA Attack1,080Feb. 22, 2023, 2:05 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,078Feb. 22, 2023, 10:03 a.m.
Letter from the Alleged Countess Julie von Ortenburg100Feb. 18, 2023, 6:17 p.m.
News from Castle Mansfeld100Feb. 18, 2023, 5:41 p.m.
Classical Ciphers^3100Feb. 17, 2023, 5:34 p.m.
Reserve Hand Procedure — Part 1100Feb. 17, 2023, 2:55 p.m.
Modified Caesar Cipher100Feb. 17, 2023, 2:09 p.m.
One-Time Pad with Flaws100Feb. 17, 2023, 12:23 p.m.
Factorization Cipher — Part 1100Feb. 17, 2023, 11:31 a.m.
A hidden word100Feb. 17, 2023, 10:45 a.m.
How do you become a big cryptographer?100Feb. 17, 2023, 10:40 a.m.
Kaskade-S/T — Part 21,079Feb. 16, 2023, 6:54 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100Feb. 16, 2023, 11:19 a.m.
A modified homophonic cipher with reduced alphabets — Part 1100Feb. 16, 2023, 11:02 a.m.
Kaskade-S/T — Part 1100Feb. 15, 2023, 4:39 p.m.
Strange Message from Thessaloniki100Feb. 14, 2023, 1:51 p.m.
Snow White and the seven dwarfs100Feb. 13, 2023, 3:18 p.m.
M-138 — Part 1100Feb. 8, 2023, 12:19 p.m.
Autokey Cipher100Feb. 7, 2023, 2:39 p.m.
Cryptanalysis Hacking Puzzles — Part 2100Feb. 7, 2023, 1:40 p.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100Feb. 7, 2023, 12:11 p.m.
Wheatstone Cryptograph — Part 1100Feb. 7, 2023, 11:40 a.m.
Number Sequence — Part 7100Feb. 7, 2023, 8:26 a.m.
Alberti Challenge — Part 1100Feb. 6, 2023, 5:43 p.m.
Number Sequence — Part 4100Feb. 6, 2023, 3:13 p.m.
Number Sequence — Part 6100Feb. 6, 2023, 2:27 p.m.
Number Sequence — Part 8100Feb. 6, 2023, 2:14 p.m.
Number Sequence — Part 9100Feb. 6, 2023, 2:11 p.m.
Number Sequence — Part 3100Feb. 6, 2023, 2:06 p.m.
Number Sequence — Part 10100Feb. 2, 2023, 6:53 p.m.
Merkle-Hellman Knapsack Challenge - Part 1101Feb. 2, 2023, 4:53 p.m.
Caesar Encryption100Feb. 2, 2023, 2:12 p.m.
The Einstein Enigma1,100Feb. 2, 2023, 2:04 p.m.
Letter to the Templars — Part 31,083Nov. 2, 2022, 5:58 p.m.
Letter to the Templars — Part 2100Nov. 2, 2022, 5:49 p.m.
Letter to the Templars — Part 1100Nov. 2, 2022, 5:41 p.m.
From Russia with Love100Nov. 2, 2022, 5:06 p.m.
Monoalphabetic Substitution100Nov. 2, 2022, 4:18 p.m.
Double Columnar Transposition100Nov. 2, 2022, 2:10 p.m.
Number Sequence100Oct. 30, 2022, 8:43 p.m.
Advent-Challenge — Part 1100Oct. 30, 2022, 8:17 p.m.
Grille Cipher100Oct. 30, 2022, 6:23 p.m.
Number Sequence — Part 2100Oct. 30, 2022, 11:54 a.m.
Beaver Code100Oct. 30, 2022, 11:47 a.m.
Original Caesar Cipher100Oct. 30, 2022, 11:44 a.m.
A Secret Message from Castle Mansfeld100Oct. 30, 2022, 11:43 a.m.

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