Account

Name
madness
Username
madness
Joined
Nov. 15, 2018, 12:47 a.m.

Points
209,756
Rank
9
Trophies
Gold5
Silver2
Bronze3

Progress
Level I Challenges
80 / 92
Level II Challenges
100 / 177
Level III Challenges
6 / 75
Level X Challenges
0 / 18

Active Challenges (6)

LevelNameAttemptsDate
The SZ42 Challenge — Part 44 / 15Sept. 1, 2023, 2:30 a.m.
Monoalphabetic Substitution with Nostradamus Flavor1 / 15Aug. 29, 2022, 10:55 p.m.
Kaskade-S/T — Part 52 / 20Aug. 21, 2022, 10:15 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 22 / 20March 22, 2020, 9:34 p.m.
Cryptanalysis Hacking Puzzles — Part 11 / 15Feb. 20, 2020, 11:26 p.m.
ElsieFour — Part 11 / 15Feb. 20, 2020, 4 p.m.

Solved Challenges (186)

LevelNamePointsDate
The Heavy T52 Sturgeon Challenge — Part 913,564Sept. 24, 2023, 3:06 p.m.
The Heavy T52 Sturgeon Challenge — Part 613,564Sept. 19, 2023, 3:10 a.m.
Purple 11,077Sept. 15, 2023, 2:46 a.m.
The Heavy T52 Sturgeon Challenge — Part 713,567Sept. 10, 2023, 3:45 p.m.
The Heavy T52 Sturgeon Challenge — Part 413,566Sept. 6, 2023, 9:41 p.m.
The Hutton Cipher – Part 42,000Sept. 6, 2023, 3:40 p.m.
The Heavy T52 Sturgeon Challenge — Part 513,569Sept. 3, 2023, 5:38 p.m.
The Heavy T52 Sturgeon Challenge — Part 113,497Aug. 31, 2023, 6:33 a.m.
The SZ42 Challenge — Part 91,119Aug. 29, 2023, 4:40 a.m.
The SZ42 Challenge — Part 81,117Aug. 29, 2023, 12:22 a.m.
The SZ42 Challenge — Part 71,117Aug. 29, 2023, 12:10 a.m.
The SZ42 Challenge — Part 61,116Aug. 28, 2023, 11:47 p.m.
The SZ42 Challenge — Part 51,115Aug. 28, 2023, 11:32 p.m.
The SZ42 Challenge — Part 31,115Aug. 27, 2023, 8:36 p.m.
The SZ42 Challenge — Part 21,115Aug. 27, 2023, 8:21 p.m.
The SZ42 Challenge — Part 11,114Aug. 27, 2023, 8:21 p.m.
The T52 Sturgeon Challenge — Part 111,106Aug. 27, 2023, 3:18 a.m.
The T52 Sturgeon Challenge — Part 101,106Aug. 26, 2023, 6:22 p.m.
The T52 Sturgeon Challenge — Part 121,106Aug. 25, 2023, 7:40 p.m.
The T52 Sturgeon Challenge — Part 91,106Aug. 25, 2023, 6:13 a.m.
The T52 Sturgeon Challenge — Part 51,106Aug. 24, 2023, 6:49 p.m.
The T52 Sturgeon Challenge — Part 41,106Aug. 23, 2023, 7:35 p.m.
The T52 Sturgeon Challenge — Part 81,106Aug. 21, 2023, 7:08 p.m.
The T52 Sturgeon Challenge — Part 71,106Aug. 20, 2023, 7:19 p.m.
The T52 Sturgeon Challenge — Part 61,106Aug. 20, 2023, 6:42 a.m.
The T52 Sturgeon Challenge — Part 31,106Aug. 18, 2023, 11:42 p.m.
The T52 Sturgeon Challenge — Part 21,106Aug. 18, 2023, 6:37 a.m.
The T52 Sturgeon Challenge — Part 11,106Aug. 17, 2023, 8:18 p.m.
Typex — Part 11,082Aug. 16, 2023, 6:11 p.m.
Sigaba Part 11,077Aug. 7, 2023, 4:57 p.m.
BCR code (Book-Caesar-RSA)1,081Aug. 6, 2023, 2:09 a.m.
The Hutton Cipher – Part 31,824July 22, 2023, 6:56 p.m.
The Hutton Cipher – Part 22,000June 5, 2023, 3:59 p.m.
The Hutton Cipher – Part 12,000May 2, 2023, 7:28 p.m.
The Josse Challenge – Part 32,000March 27, 2023, 1:34 p.m.
The Josse Challenge – Part 22,000Feb. 25, 2023, 3:32 p.m.
Flawed Usage of a OTP Cipher by the BND1,090Feb. 19, 2023, 1:40 a.m.
The Josse Challenge – Part 11,547Feb. 17, 2023, 3:42 a.m.
The Syllabary Cipher – Part 51,547Nov. 4, 2022, 1:59 a.m.
The Syllabary Cipher – Part 31,576Nov. 2, 2022, 4:40 p.m.
The Syllabary Cipher – Part 41,613Nov. 1, 2022, 4:56 p.m.
The Syllabary Cipher – Part 21,660Nov. 1, 2022, 11:15 a.m.
The Syllabary Cipher – Part 1200Oct. 29, 2022, 1:14 a.m.
Hill Cipher1,286Oct. 23, 2022, 7:20 p.m.
Merkle-Hellman Knapsack Challenge — Part 21,576Oct. 19, 2022, 10:31 p.m.
Merkle-Hellman Knapsack Challenge - Part 1117Oct. 19, 2022, 8:33 p.m.
Modified Vigenère Cipher1,183Aug. 29, 2022, 10:02 p.m.
The Einstein Enigma1,103Aug. 27, 2022, 6:46 p.m.
New Year's Greetings — Part 4100Aug. 26, 2022, 2:46 a.m.
New Year's Greetings — Part 3100Aug. 26, 2022, 2:35 a.m.
New Year's Greetings — Part 2100Aug. 26, 2022, 2:13 a.m.
New Year's Greetings — Part 1100Aug. 26, 2022, 2:02 a.m.
Image Noise100Aug. 26, 2022, 1:48 a.m.
Kaskade-S/T — Part 31,080Aug. 21, 2022, 3:52 p.m.
Kaskade-S/T — Part 21,080Aug. 21, 2022, 4:02 a.m.
Alberti Challenge — Part 21,237Aug. 13, 2022, 11:44 p.m.
Alberti Challenge — Part 1101Aug. 13, 2022, 4:38 a.m.
Number Sequence — Part 9100June 20, 2021, 2:48 a.m.
Number Sequence — Part 7100June 20, 2021, 2:33 a.m.
Number Sequence — Part 6100June 20, 2021, 2:22 a.m.
Handycipher made in love — Part 21,128June 17, 2021, 6:13 p.m.
Handycipher made in love — Part 11,124June 17, 2021, 4:01 a.m.
Lightweight Introduction to Lattices — Part 31,162June 13, 2021, 2:07 a.m.
Lightweight Introduction to Lattices — Part 2100June 13, 2021, 1:32 a.m.
Lightweight Introduction to Lattices — Part 1100June 13, 2021, 1:13 a.m.
Unconcealed RSA messages1,084May 16, 2021, 10:05 p.m.
CMEA 11,082April 24, 2021, 4:34 p.m.
A really long number sequence1,084April 24, 2021, 3:16 p.m.
Number Sequence — Part 10100April 23, 2021, 4:41 a.m.
Number Sequence — Part 5100April 23, 2021, 3:47 a.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,082April 17, 2021, 8:59 p.m.
AES key — encoded in the machine readable zone of a European ePassport1,085April 17, 2021, 7:15 p.m.
Double Column Transposition — Part 41,092April 13, 2021, 12:31 a.m.
Double Column Transposition — Part 31,091April 12, 2021, 4:01 p.m.
Double Column Transposition — Part 21,091April 12, 2021, 3:42 p.m.
Double Column Transposition — Part 11,091April 12, 2021, 4:34 a.m.
Not-so-Secret Message from Malawi — Part II (ECC)1,082April 10, 2021, 6:06 p.m.
Advent Challenge — Part 41,113Feb. 26, 2021, 3:22 a.m.
Advent Challenge — Part 31,113Feb. 26, 2021, 3:03 a.m.
Advent-Challenge — Part 21,113Feb. 26, 2021, 12:19 a.m.
Spanish Strip Cipher — Part 11,092Feb. 25, 2021, 3:01 a.m.
Molehunt (Part 3/3)1,082Feb. 24, 2021, 5:05 a.m.
Molehunt (Part 1/3)100Feb. 23, 2021, 1:48 a.m.
Find the right route — Part 3102Feb. 18, 2021, 2:35 a.m.
Find the right route — Part 2102Feb. 17, 2021, 7 a.m.
Find the right route — Part 1101Feb. 17, 2021, 6:13 a.m.
ADFGVX — Part 2100Feb. 17, 2021, 5:15 a.m.
ADFGVX — Part 1100Feb. 17, 2021, 4:49 a.m.
Trendy Messenger1,131April 27, 2020, 4:40 p.m.
Breaking a Filter Generator1,138April 27, 2020, 1:55 p.m.
Summer Job1,132April 21, 2020, 3:46 a.m.
Pigpen with a twist — Part 31,086March 31, 2020, 5:16 p.m.
Snow White and the seven dwarfs100March 31, 2020, 1:07 a.m.
Nils away on travel100March 30, 2020, 4:30 a.m.
Letter from the Alleged Countess Julie von Ortenburg100March 26, 2020, 2:55 a.m.
Number Sequence — Part 3100March 24, 2020, 8:56 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100March 22, 2020, 1:38 a.m.
Multilingual Monoalphabetic Substitution100March 21, 2020, 6:54 a.m.
Recycled One-Time Pad100March 21, 2020, 5:33 a.m.
Unusual encryption using a diophantine equation1,086March 11, 2020, 10:21 p.m.
Number Sequence — Part 8100March 11, 2020, 5:11 a.m.
Number Sequence — Part 4100March 11, 2020, 4:48 a.m.
Trifid Cipher100March 10, 2020, 3:46 p.m.
Polyphonic Substitution Cipher — Part 11,226March 7, 2020, 6:57 p.m.
Polyphonic Substitution Cipher — Part 21,281March 7, 2020, 1:38 p.m.
Cascading Encryption — Part 1/3100March 4, 2020, 7:44 a.m.
Molehunt (Part 2/3)100Feb. 29, 2020, 6:14 a.m.
Kaskade-S/T — Part 1100Feb. 28, 2020, 7:20 p.m.
Fastest in the West1,135Feb. 28, 2020, 5:56 p.m.
AES ECB Wrong Encoding1,126Feb. 28, 2020, 5:34 p.m.
Keyshanc — Part 21,089Feb. 28, 2020, 4:56 p.m.
Keyshanc — Part 11,089Feb. 28, 2020, 3:51 p.m.
Cipher ID — Part 11,230Feb. 27, 2020, 11:03 p.m.
A Cloaked Substitution Cipher — Part 21,192Feb. 25, 2020, 12:03 a.m.
Typex — Part 21,092Feb. 24, 2020, 11:45 p.m.
Cryptanalysis Hacking Puzzles — Part 2100Feb. 24, 2020, 8:05 a.m.
The LoRa Cipher: Logic Randomness — Part 12,000Feb. 20, 2020, 4:41 p.m.
Reserve Hand Procedure — Part 1100Feb. 20, 2020, 5:15 a.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,084Feb. 20, 2020, 3:25 a.m.
Hybrid Encryption I1,084Feb. 20, 2020, 12:41 a.m.
A Cloaked Substitution Cipher — Part 11,193Feb. 19, 2020, 4:28 a.m.
Monoalphabetic Substitution with Camouflage — Part 51,088Feb. 18, 2020, 3:20 a.m.
Monoalphabetic substitution with camouflage — Part 4100Feb. 18, 2020, 2:33 a.m.
Monoalphabetic substitution with camouflage — Part 31,087Feb. 18, 2020, 12:53 a.m.
Monoalphabetic substitution with camouflage — Part 21,087Feb. 18, 2020, 12:04 a.m.
Monoalphabetic substitution with camouflage — Part 1100Feb. 17, 2020, 8:48 p.m.
Enigma Combinatorics100Feb. 17, 2020, 2:54 a.m.
Zodiac Cipher100Feb. 16, 2020, 5:51 a.m.
Enigma Messages100Feb. 12, 2020, 7:22 a.m.
Enigma Part 21,084Feb. 12, 2020, 6:33 a.m.
Enigma Messages with Repeated Letters — Part 5100Feb. 11, 2020, 5:25 a.m.
Enigma Messages with Repeated Letters — Part 4100Feb. 11, 2020, 1:56 a.m.
Enigma Messages with Repeated Letters — Part 3100Feb. 11, 2020, 12:23 a.m.
Enigma Messages with Repeated Letters — Part 2100Feb. 11, 2020, 12:09 a.m.
Enigma Messages with Repeated Letters — Part 1100Feb. 10, 2020, 11:42 p.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme1,085Feb. 10, 2020, 11:27 p.m.
Homophonic Encryption — Part 21,170Feb. 10, 2020, 9:13 p.m.
Homophonic Encryption — Part 41,170Feb. 10, 2020, 11:37 a.m.
Homophonic Encryption — Part 31,170Feb. 10, 2020, 10:31 a.m.
Homophonic Encryption — Part 11,170Feb. 10, 2020, 10:30 a.m.
Enigma Part 11,084Feb. 10, 2020, 2:30 a.m.
Hill Cipher with Sudoku Key100May 12, 2019, 6:05 p.m.
Number Sequence — Part 2100April 19, 2019, 4:58 p.m.
Number Sequence100April 19, 2019, 4:54 p.m.
The Book Code: A Challenge for Bookworms100April 7, 2019, 5:55 p.m.
Partial Key Exposure with RSA — Part 11,091April 7, 2019, 5:52 a.m.
RSA: Two different keys — same ciphertext1,089April 6, 2019, 11:14 p.m.
Broadcasting and low exponent — RSA Attack1,089April 3, 2019, 5:48 a.m.
Modified Caesar Cipher100April 3, 2019, 5:28 a.m.
Alice's Birthday Party (Part 2)1,087April 3, 2019, 4:26 a.m.
Alice's Birthday Party (Part 1)1,087April 3, 2019, 4:05 a.m.
A hidden word — Part 2100April 3, 2019, 2:33 a.m.
Cracking SHA1-Hashed Passwords1,088April 1, 2019, 7:11 p.m.
ECDH-Key Exchange for Beginners100April 1, 2019, 6:53 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100April 1, 2019, 6:23 p.m.
A modified homophonic cipher with reduced alphabets — Part 1100April 1, 2019, 6 p.m.
Double Columnar Transposition100Feb. 27, 2019, 1:25 p.m.
One-Time Pad with Flaws100Feb. 26, 2019, 1:34 a.m.
Grille Cipher100Feb. 22, 2019, 4:03 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100Feb. 22, 2019, 2:27 a.m.
Beaver Code100Feb. 22, 2019, 2:01 a.m.
¿No Hablas Español? No problemo!100Feb. 21, 2019, 3:57 a.m.
How do you become a big cryptographer?100Feb. 21, 2019, 1:21 a.m.
Factorization Cipher — Part 21,090Feb. 19, 2019, 4:36 p.m.
An 'unhearable' message100Feb. 18, 2019, 3:55 p.m.
Factorization Cipher — Part 31,091Feb. 15, 2019, 5:20 a.m.
Factorization Cipher — Part 1100Feb. 15, 2019, 3:17 a.m.
Pigpen with a twist — Part 21,090Feb. 14, 2019, 10:10 p.m.
Pigpen with a twist — Part 1100Feb. 14, 2019, 4:48 p.m.
An Invisible Message100Feb. 14, 2019, 1:03 p.m.
Monoalphabetic Substitution100Feb. 13, 2019, 6:35 a.m.
Letter to the Templars — Part 31,094Feb. 13, 2019, 5:37 a.m.
Letter to the Templars — Part 2100Feb. 13, 2019, 5:22 a.m.
Letter to the Templars — Part 1100Feb. 13, 2019, 5:07 a.m.
Classical Ciphers^3100Feb. 13, 2019, 4:47 a.m.
A hidden word100Feb. 12, 2019, 3:29 a.m.
Caesar Encryption100Feb. 11, 2019, 4:29 p.m.
Playfair with hints about the grid100Feb. 11, 2019, 8:11 a.m.
Playfair Encryption100Feb. 11, 2019, 7:45 a.m.
Original Caesar Cipher100Feb. 11, 2019, 7:09 a.m.
M-138 — Part 21,107Nov. 15, 2018, 11:12 p.m.
From Russia with Love100Nov. 15, 2018, 12:31 p.m.
M-138 — Part 1100Nov. 15, 2018, 11:34 a.m.
Modular Sequences102Nov. 15, 2018, 10:59 a.m.
Advent-Challenge — Part 1100Nov. 15, 2018, 2:40 a.m.
Autokey Cipher102Nov. 15, 2018, 2:30 a.m.

Submitted Challenges (5)

LevelNameDate
Wheatstone Cryptograph — Part 2May 21, 2021, 3:10 p.m.
Wheatstone Cryptograph — Part 1April 21, 2021, 7:17 p.m.
Polyhomophonic Substitution — Part 3April 6, 2020, 8:44 p.m.
Polyhomophonic Substitution — Part 2March 28, 2020, 3:09 p.m.
Polyhomophonic Substitution — Part 1March 22, 2020, 1:57 a.m.

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