Account

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

Rank
27
Points
71,592
Trophies
Gold0
Silver0
Bronze0

Active Challenges (3)

LevelNameAttemptsDate
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 (129)

LevelNamePointsDate
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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