Account

Name
J. M.
Username
jomandi
Joined
May 23, 2011, 7:21 p.m.

Rank
18
Points
113,270
Trophies
Gold5
Silver16
Bronze22

Solved Challenges (115)

LevelNamePointsDate
Spanish Strip Cipher — Part 11,613April 1, 2014, 12:18 a.m.
Enigma Messages with Repeated Letters — Part 4200March 6, 2014, 12:57 p.m.
Enigma Messages with Repeated Letters — Part 3200March 5, 2014, 7:28 p.m.
Enigma Messages with Repeated Letters — Part 5200March 5, 2014, 5:39 p.m.
RSA Factoring Challenge: RSA-2100Dec. 1, 2013, 10:53 p.m.
Enigma Messages with Repeated Letters — Part 2120Nov. 2, 2013, 1:33 a.m.
Trifid Cipher150Oct. 30, 2013, 10 a.m.
Enigma Messages with Repeated Letters — Part 1200Sept. 26, 2013, 3:57 p.m.
Hill Cipher with Sudoku Key113Sept. 12, 2013, 3:45 p.m.
From Russia with Love200Sept. 4, 2013, 4:39 p.m.
Nils away on travel200Aug. 8, 2013, 2:10 p.m.
RSA Factoring Challenge: RSA-7040Aug. 1, 2013, 12:19 a.m.
ORYX Stream Cipher — Part 3 (revised)2,000June 6, 2013, 11:37 p.m.
Notes of an Italian Soldier800May 19, 2013, 1:45 p.m.
Cascading Encryption — Part 3/31,353April 23, 2013, 9:11 p.m.
Cascading Encryption — Part 2/31,349April 21, 2013, 3:29 p.m.
Snow White and the seven dwarfs200April 20, 2013, 1:54 p.m.
Typex — Part 22,000April 4, 2013, 12:08 a.m.
Reserve Hand Procedure — Part 1200March 6, 2013, 10:50 p.m.
Typex — Part 11,613March 4, 2013, 3:08 p.m.
Multilingual Monoalphabetic Substitution106Feb. 16, 2013, 12:48 a.m.
Cascading Encryption — Part 1/3200Jan. 26, 2013, 2:06 a.m.
Enigma Messages200Jan. 23, 2013, 11:06 p.m.
Playfair with hints about the grid200Jan. 16, 2013, 5:50 p.m.
A hidden word200Jan. 6, 2013, 10:09 p.m.
Strange Message from Thessaloniki150Dec. 11, 2012, 11:06 p.m.
Recycled One-Time Pad111Nov. 28, 2012, 11:42 p.m.
Letter to the Templars — Part 32,000Oct. 9, 2012, 3:34 p.m.
BCR code (Book-Caesar-RSA)2,000Sept. 13, 2012, 3:36 p.m.
Beaver Code200Aug. 13, 2012, 8:54 p.m.
Letter to the Templars — Part 2200July 30, 2012, 8:51 p.m.
Letter to the Templars — Part 1200July 16, 2012, 10:58 p.m.
An 'unhearable' message125June 9, 2012, 3:45 p.m.
How do you become a big cryptographer?200May 28, 2012, 11:26 p.m.
Keyshanc — Part 22,000May 22, 2012, 12:37 a.m.
Keyshanc — Part 12,000May 21, 2012, 11:06 p.m.
Concealed Messages — Vigenère's Night Sky1,613May 13, 2012, 1 p.m.
Number Sequence — Part 5114April 24, 2012, 8:44 p.m.
Number Sequence — Part 4114April 24, 2012, 8:43 p.m.
¿No Hablas Español? No problemo!200April 19, 2012, 3:46 p.m.
Number Sequence — Part 3200March 30, 2012, 11:43 p.m.
The Book Code: A Challenge for Bookworms200March 21, 2012, 10:28 p.m.
Monoalphabetic Substitution with Camouflage — Part 52,000March 10, 2012, 6:57 p.m.
ECDH-Key Exchange for Beginners200Feb. 24, 2012, 1:48 p.m.
Partial Key Exposure with RSA — Part 12,000Feb. 11, 2012, 1:58 p.m.
AES key — encoded in the machine readable zone of a European ePassport1,725Jan. 19, 2012, 4:01 p.m.
Factorization Cipher — Part 31,725Jan. 8, 2012, 6:07 p.m.
Monoalphabetic substitution with camouflage — Part 4150Dec. 22, 2011, 6:04 p.m.
Monoalphabetic substitution with camouflage — Part 31,824Dec. 9, 2011, 2:46 a.m.
Monoalphabetic substitution with camouflage — Part 21,824Dec. 9, 2011, 12:14 a.m.
Factorization Cipher — Part 22,000Dec. 2, 2011, 2:05 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 21,182Nov. 19, 2011, 3:39 p.m.
Purple 11,155Nov. 14, 2011, 7:57 a.m.
Ku Klux Klan1,000Nov. 13, 2011, 7:02 p.m.
Monoalphabetic substitution with camouflage — Part 1113Nov. 3, 2011, 7:31 p.m.
Unconcealed RSA messages2,000Nov. 3, 2011, 1:58 a.m.
Turing Bombe Enigma I200Oct. 18, 2011, 3:36 p.m.
An Invisible Message200Oct. 18, 2011, 3:35 p.m.
Factorization Cipher — Part 1200Oct. 18, 2011, 1:56 a.m.
Grille Cipher200Oct. 14, 2011, 8:53 p.m.
Double Columnar Transposition200Oct. 12, 2011, 10:10 p.m.
Sigaba Part 11,159Oct. 2, 2011, 7:55 p.m.
Pigpen with a twist — Part 21,344Sept. 29, 2011, 8:07 p.m.
Zodiac Cipher100Sept. 21, 2011, 12:08 a.m.
Number Sequence — Part 2101Sept. 21, 2011, 12:07 a.m.
Number Sequence100Sept. 21, 2011, 12:06 a.m.
Modified Caesar Cipher105Sept. 21, 2011, 12:04 a.m.
Original Caesar Cipher100Sept. 21, 2011, 12:03 a.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1101Sept. 21, 2011, 12:02 a.m.
One-Time Pad with Flaws100Sept. 20, 2011, 11:59 p.m.
Monoalphabetic Substitution100Sept. 20, 2011, 11:36 p.m.
Classical Ciphers^3100Sept. 20, 2011, 11:35 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100Sept. 20, 2011, 11:34 p.m.
A modified homophonic cipher with reduced alphabets — Part 1100Sept. 20, 2011, 11:33 p.m.
A Secret Message from Castle Mansfeld100Sept. 20, 2011, 11:31 p.m.
Playfair Encryption100Sept. 20, 2011, 11:12 p.m.
Caesar Encryption100Sept. 20, 2011, 11:02 p.m.
Letter from the Alleged Countess Julie von Ortenburg100Sept. 20, 2011, 10:24 p.m.
Enigma Combinatorics100Sept. 20, 2011, 10:22 p.m.
Pigpen with a twist — Part 1120Sept. 10, 2011, 7:56 p.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid200Sept. 9, 2011, 6:20 p.m.
Unusual encryption using a diophantine equation1,547Sept. 8, 2011, 5:22 p.m.
Pigpen with a twist — Part 31,576Sept. 8, 2011, midnight
A really long number sequence1,824Sept. 6, 2011, 11:40 p.m.
ADFGVX — Part 2150Aug. 16, 2011, 5:56 p.m.
ADFGVX — Part 1150Aug. 16, 2011, 5:15 p.m.
RSA: Two different keys — same ciphertext2,000Aug. 15, 2011, 9:52 p.m.
Music Code — Part 21,238Aug. 15, 2011, 1:27 p.m.
Music Code — Part 1101Aug. 14, 2011, 4:51 p.m.
Akelarre Part 11,174Aug. 10, 2011, 11:47 p.m.
CMEA 214,472Aug. 7, 2011, 11:09 a.m.
Smartcard RSA1,169Aug. 3, 2011, 8:41 p.m.
ORYX Stream Cipher Part II1,168Aug. 3, 2011, 7:17 p.m.
ORYX Stream Cipher Part I1,168Aug. 3, 2011, 6:40 p.m.
CMEA 11,179July 29, 2011, 1:13 p.m.
Kaskade-S/T — Part 51,247July 23, 2011, 7:19 p.m.
Broadcasting and low exponent — RSA Attack2,000July 22, 2011, 9:37 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,170July 20, 2011, 5:48 p.m.
Kaskade-S/T — Part 31,216July 6, 2011, 1:33 a.m.
Kaskade-S/T — Part 21,217July 3, 2011, 11:15 p.m.
Kaskade-S/T — Part 1101July 3, 2011, 11:37 a.m.
Molehunt (Part 3/3)1,175July 2, 2011, 10:09 p.m.
Molehunt (Part 1/3)100July 2, 2011, 9:14 p.m.
Molehunt (Part 2/3)100July 2, 2011, 8:41 p.m.
Enigma Part 21,174June 29, 2011, 11:51 p.m.
Lattice Part 11,236June 11, 2011, 5:16 p.m.
Cracking SHA1-Hashed Passwords1,260June 11, 2011, 12:08 a.m.
Enigma Part 11,178June 10, 2011, 7:25 p.m.
Hybrid Encryption I1,183June 7, 2011, 6:23 p.m.
RSA with Special d14,494June 7, 2011, 5:43 p.m.
Not-so-Secret Message from Malawi — Part II (ECC)1,179June 7, 2011, 12:19 a.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,179June 5, 2011, 11:39 p.m.
Alice's Birthday Party (Part 1)1,180June 2, 2011, 7:10 p.m.
Alice's Birthday Party (Part 2)1,180June 2, 2011, 6:56 p.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme1,213May 23, 2011, 9:53 p.m.

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