Account

Name
chris
Username
c2
Joined
Feb. 28, 2017, 7:58 a.m.

Rank
38
Points
51,973
Trophies
Gold0
Silver0
Bronze0

Active Challenges (2)

LevelNameAttemptsDate
Number Sequence — Part 52 / 15May 1, 2017, 4:10 p.m.
Lattice Part 18 / 999April 21, 2017, noon

Solved Challenges (88)

LevelNamePointsDate
Enigma Messages100April 27, 2017, 11:10 a.m.
Unusual encryption using a diophantine equation1,097April 26, 2017, 4:10 p.m.
ECDH-Key Exchange for Beginners100April 25, 2017, 2:28 p.m.
A really long number sequence1,097April 25, 2017, 11:11 a.m.
Playfair with hints about the grid100April 24, 2017, 3:41 p.m.
Playfair Encryption100April 24, 2017, 3:19 p.m.
Image Noise100April 24, 2017, 2:38 p.m.
ADFGVX — Part 1100April 24, 2017, 9:16 a.m.
ADFGVX — Part 2100April 24, 2017, 7:22 a.m.
An 'unhearable' message100April 20, 2017, 11:07 p.m.
Double Columnar Transposition100April 4, 2017, 7:24 p.m.
Kaskade-S/T — Part 21,095April 4, 2017, 12:10 p.m.
Kaskade-S/T — Part 1100April 3, 2017, 10:51 p.m.
Keyshanc — Part 21,101April 3, 2017, 9:24 p.m.
Keyshanc — Part 11,101April 3, 2017, 8:07 p.m.
Partial Key Exposure with RSA — Part 11,099April 2, 2017, 4:28 p.m.
Hill Cipher with Sudoku Key100April 2, 2017, 1:52 p.m.
Purple 11,093March 31, 2017, 6:08 p.m.
Pigpen with a twist — Part 1100March 30, 2017, 8:30 p.m.
Classical Ciphers^3100March 29, 2017, 11:45 p.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme1,094March 29, 2017, 11:05 p.m.
Trifid Cipher100March 28, 2017, 7:50 p.m.
Number Sequence — Part 6100March 27, 2017, 10:39 p.m.
Number Sequence — Part 8100March 27, 2017, 10:35 p.m.
Molehunt (Part 2/3)100March 27, 2017, 9:18 p.m.
Molehunt (Part 1/3)100March 27, 2017, 8:22 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100March 27, 2017, 3:49 p.m.
Enigma Part 11,093March 27, 2017, 9:16 a.m.
A hidden word — Part 2100March 26, 2017, 10:07 p.m.
The Book Code: A Challenge for Bookworms100March 26, 2017, 9:56 p.m.
RSA: Two different keys — same ciphertext1,097March 26, 2017, 9:10 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,093March 26, 2017, 5:48 p.m.
Pigpen with a twist — Part 31,097March 25, 2017, 2:43 p.m.
Letter from the Alleged Countess Julie von Ortenburg100March 25, 2017, 2:38 p.m.
How do you become a big cryptographer?100March 25, 2017, 8:02 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100March 25, 2017, 7:32 a.m.
One-Time Pad with Flaws100March 25, 2017, 7:14 a.m.
Nils away on travel100March 24, 2017, 11 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100March 24, 2017, 2:51 p.m.
Enigma Messages with Repeated Letters — Part 5100March 24, 2017, 12:18 p.m.
Enigma Messages with Repeated Letters — Part 4100March 24, 2017, 12:13 p.m.
Enigma Messages with Repeated Letters — Part 3100March 24, 2017, 11:56 a.m.
Enigma Messages with Repeated Letters — Part 2100March 24, 2017, 10:51 a.m.
Enigma Part 21,093March 24, 2017, 9:02 a.m.
Factorization Cipher — Part 31,099March 23, 2017, 11:15 a.m.
Spanish Strip Cipher — Part 11,115March 22, 2017, 2:49 p.m.
CMEA 213,282March 22, 2017, 8:35 a.m.
An Invisible Message100March 21, 2017, 10:58 p.m.
Enigma Combinatorics100March 21, 2017, 9:16 p.m.
ORYX Stream Cipher Part I1,093March 21, 2017, 3:49 p.m.
The Last Note100March 19, 2017, 10:14 p.m.
CMEA 11,094March 19, 2017, 8:47 a.m.
Factorization Cipher — Part 21,098March 17, 2017, 11:03 p.m.
Hybrid Encryption I1,094March 17, 2017, 4:21 p.m.
Reserve Hand Procedure — Part 1100March 17, 2017, 3:39 p.m.
Snow White and the seven dwarfs100March 17, 2017, 2:42 p.m.
From Russia with Love100March 17, 2017, 9 a.m.
A modified homophonic cipher with reduced alphabets — Part 1100March 16, 2017, 5:52 p.m.
Grille Cipher100March 16, 2017, 5 p.m.
Factorization Cipher — Part 1100March 16, 2017, 3:11 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,093March 16, 2017, 2:52 p.m.
A hidden word100March 16, 2017, 1:27 p.m.
Number Sequence — Part 4100March 16, 2017, 1 p.m.
Number Sequence — Part 3100March 16, 2017, 12:54 p.m.
Number Sequence — Part 2100March 16, 2017, 12:51 p.m.
¿No Hablas Español? No problemo!100March 16, 2017, 12:05 p.m.
Broadcasting and low exponent — RSA Attack1,097March 14, 2017, 10:47 a.m.
Alice's Birthday Party (Part 2)1,093March 14, 2017, 10:30 a.m.
Alice's Birthday Party (Part 1)1,093March 14, 2017, 10:06 a.m.
M-138 — Part 31,125March 13, 2017, 9:23 p.m.
M-138 — Part 21,125March 13, 2017, 5:44 p.m.
Beaver Code100March 13, 2017, 11:45 a.m.
BCR code (Book-Caesar-RSA)1,103March 13, 2017, 11:32 a.m.
Letter to the Templars — Part 31,103March 11, 2017, 4:50 p.m.
Letter to the Templars — Part 2100March 11, 2017, 4:42 p.m.
Letter to the Templars — Part 1100March 11, 2017, 4:34 p.m.
Monoalphabetic Substitution100March 11, 2017, 12:17 p.m.
AES key — encoded in the machine readable zone of a European ePassport1,099March 11, 2017, 12:57 a.m.
Heartbleed — Part 31,121March 10, 2017, 8:29 a.m.
Heartbleed — Part 2100March 3, 2017, 1:26 p.m.
Heartbleed — Part 1 100March 3, 2017, 11:58 a.m.
Enigma Messages with Repeated Letters — Part 1100March 1, 2017, 9:36 p.m.
Cracking SHA1-Hashed Passwords1,096March 1, 2017, 11:57 a.m.
M-138 — Part 1100Feb. 28, 2017, 6:17 p.m.
Modified Caesar Cipher100Feb. 28, 2017, 5:35 p.m.
Caesar Encryption100Feb. 28, 2017, 4:39 p.m.
Original Caesar Cipher100Feb. 28, 2017, 4:25 p.m.
Number Sequence100Feb. 28, 2017, 9:08 a.m.

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