Account

Name

chris

Username

Joined

Feb. 28, 2017, 7:58 a.m.

Points

51,973

Rank

Trophies

Progress

57 / 92

30 / 174

1 / 75

0 / 18

Links

Forum profile

Active Challenges (2)

Level	Name	Attempts	Date
	Number Sequence — Part 5	2 / 15	May 1, 2017, 4:10 p.m.
	Lattice Part 1	8 / 999	April 21, 2017, noon

Solved Challenges (88)

Name	Points	Date
Enigma Messages	100	April 27, 2017, 11:10 a.m.
Unusual encryption using a diophantine equation	1,097	April 26, 2017, 4:10 p.m.
ECDH-Key Exchange for Beginners	100	April 25, 2017, 2:28 p.m.
A really long number sequence	1,097	April 25, 2017, 11:11 a.m.
Playfair with hints about the grid	100	April 24, 2017, 3:41 p.m.
Playfair Encryption	100	April 24, 2017, 3:19 p.m.
Image Noise	100	April 24, 2017, 2:38 p.m.
ADFGVX — Part 1	100	April 24, 2017, 9:16 a.m.
ADFGVX — Part 2	100	April 24, 2017, 7:22 a.m.
An 'unhearable' message	100	April 20, 2017, 11:07 p.m.
Double Columnar Transposition	100	April 4, 2017, 7:24 p.m.
Kaskade-S/T — Part 2	1,095	April 4, 2017, 12:10 p.m.
Kaskade-S/T — Part 1	100	April 3, 2017, 10:51 p.m.
Keyshanc — Part 2	1,101	April 3, 2017, 9:24 p.m.
Keyshanc — Part 1	1,101	April 3, 2017, 8:07 p.m.
Partial Key Exposure with RSA — Part 1	1,099	April 2, 2017, 4:28 p.m.
Hill Cipher with Sudoku Key	100	April 2, 2017, 1:52 p.m.
Purple 1	1,093	March 31, 2017, 6:08 p.m.
Pigpen with a twist — Part 1	100	March 30, 2017, 8:30 p.m.
Classical Ciphers^3	100	March 29, 2017, 11:45 p.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme	1,094	March 29, 2017, 11:05 p.m.
Trifid Cipher	100	March 28, 2017, 7:50 p.m.
Number Sequence — Part 6	100	March 27, 2017, 10:39 p.m.
Number Sequence — Part 8	100	March 27, 2017, 10:35 p.m.
Molehunt (Part 2/3)	100	March 27, 2017, 9:18 p.m.
Molehunt (Part 1/3)	100	March 27, 2017, 8:22 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1	100	March 27, 2017, 3:49 p.m.
Enigma Part 1	1,093	March 27, 2017, 9:16 a.m.
A hidden word — Part 2	100	March 26, 2017, 10:07 p.m.
The Book Code: A Challenge for Bookworms	100	March 26, 2017, 9:56 p.m.
RSA: Two different keys — same ciphertext	1,097	March 26, 2017, 9:10 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space	1,093	March 26, 2017, 5:48 p.m.
Pigpen with a twist — Part 3	1,097	March 25, 2017, 2:43 p.m.
Letter from the Alleged Countess Julie von Ortenburg	100	March 25, 2017, 2:38 p.m.
How do you become a big cryptographer?	100	March 25, 2017, 8:02 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid	100	March 25, 2017, 7:32 a.m.
One-Time Pad with Flaws	100	March 25, 2017, 7:14 a.m.
Nils away on travel	100	March 24, 2017, 11 p.m.
A modified homophonic cipher with reduced alphabets — Part 2	100	March 24, 2017, 2:51 p.m.
Enigma Messages with Repeated Letters — Part 5	100	March 24, 2017, 12:18 p.m.
Enigma Messages with Repeated Letters — Part 4	100	March 24, 2017, 12:13 p.m.
Enigma Messages with Repeated Letters — Part 3	100	March 24, 2017, 11:56 a.m.
Enigma Messages with Repeated Letters — Part 2	100	March 24, 2017, 10:51 a.m.
Enigma Part 2	1,093	March 24, 2017, 9:02 a.m.
Factorization Cipher — Part 3	1,099	March 23, 2017, 11:15 a.m.
Spanish Strip Cipher — Part 1	1,115	March 22, 2017, 2:49 p.m.
CMEA 2	13,282	March 22, 2017, 8:35 a.m.
An Invisible Message	100	March 21, 2017, 10:58 p.m.
Enigma Combinatorics	100	March 21, 2017, 9:16 p.m.
ORYX Stream Cipher Part I	1,093	March 21, 2017, 3:49 p.m.
The Last Note	100	March 19, 2017, 10:14 p.m.
CMEA 1	1,094	March 19, 2017, 8:47 a.m.
Factorization Cipher — Part 2	1,098	March 17, 2017, 11:03 p.m.
Hybrid Encryption I	1,094	March 17, 2017, 4:21 p.m.
Reserve Hand Procedure — Part 1	100	March 17, 2017, 3:39 p.m.
Snow White and the seven dwarfs	100	March 17, 2017, 2:42 p.m.
From Russia with Love	100	March 17, 2017, 9 a.m.
A modified homophonic cipher with reduced alphabets — Part 1	100	March 16, 2017, 5:52 p.m.
Grille Cipher	100	March 16, 2017, 5 p.m.
Factorization Cipher — Part 1	100	March 16, 2017, 3:11 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)	1,093	March 16, 2017, 2:52 p.m.
A hidden word	100	March 16, 2017, 1:27 p.m.
Number Sequence — Part 4	100	March 16, 2017, 1 p.m.
Number Sequence — Part 3	100	March 16, 2017, 12:54 p.m.
Number Sequence — Part 2	100	March 16, 2017, 12:51 p.m.
¿No Hablas Español? No problemo!	100	March 16, 2017, 12:05 p.m.
Broadcasting and low exponent — RSA Attack	1,097	March 14, 2017, 10:47 a.m.
Alice's Birthday Party (Part 2)	1,093	March 14, 2017, 10:30 a.m.
Alice's Birthday Party (Part 1)	1,093	March 14, 2017, 10:06 a.m.
M-138 — Part 3	1,125	March 13, 2017, 9:23 p.m.
M-138 — Part 2	1,125	March 13, 2017, 5:44 p.m.
Beaver Code	100	March 13, 2017, 11:45 a.m.
BCR code (Book-Caesar-RSA)	1,103	March 13, 2017, 11:32 a.m.
Letter to the Templars — Part 3	1,103	March 11, 2017, 4:50 p.m.
Letter to the Templars — Part 2	100	March 11, 2017, 4:42 p.m.
Letter to the Templars — Part 1	100	March 11, 2017, 4:34 p.m.
Monoalphabetic Substitution	100	March 11, 2017, 12:17 p.m.
AES key — encoded in the machine readable zone of a European ePassport	1,099	March 11, 2017, 12:57 a.m.
Heartbleed — Part 3	1,121	March 10, 2017, 8:29 a.m.
Heartbleed — Part 2	100	March 3, 2017, 1:26 p.m.
Heartbleed — Part 1	100	March 3, 2017, 11:58 a.m.
Enigma Messages with Repeated Letters — Part 1	100	March 1, 2017, 9:36 p.m.
Cracking SHA1-Hashed Passwords	1,096	March 1, 2017, 11:57 a.m.
M-138 — Part 1	100	Feb. 28, 2017, 6:17 p.m.
Modified Caesar Cipher	100	Feb. 28, 2017, 5:35 p.m.
Caesar Encryption	100	Feb. 28, 2017, 4:39 p.m.
Original Caesar Cipher	100	Feb. 28, 2017, 4:25 p.m.
Number Sequence	100	Feb. 28, 2017, 9:08 a.m.