Account

Name
Nathan
Username
Witten
Joined
Dec. 4, 2011, 9:38 p.m.

Rank
81
Points
25,326
Trophies
Gold0
Silver1
Bronze1

Active Challenges (1)

LevelNameAttemptsDate
ORYX Stream Cipher Part I2 / 20Dec. 18, 2011, 2:05 p.m.

Solved Challenges (48)

LevelNamePointsDate
Number Sequence — Part 7100Oct. 29, 2015, 3:30 p.m.
Number Sequence — Part 6100Oct. 29, 2015, 2:53 p.m.
Number Sequence — Part 8102Oct. 29, 2015, 2:39 p.m.
A hidden word150Jan. 7, 2013, 8:13 p.m.
BCR code (Book-Caesar-RSA)1,255Nov. 22, 2012, 8:58 p.m.
Letter to the Templars — Part 31,298Nov. 21, 2012, 8:35 p.m.
Letter to the Templars — Part 2101Nov. 21, 2012, 8:24 p.m.
Letter to the Templars — Part 1101Nov. 21, 2012, 8:19 p.m.
Beaver Code101Nov. 21, 2012, 7:32 p.m.
Number Sequence — Part 5100Nov. 21, 2012, 7:11 p.m.
How do you become a big cryptographer?101Nov. 21, 2012, 3:10 a.m.
Number Sequence — Part 4100Nov. 20, 2012, 11:04 p.m.
Number Sequence — Part 3125April 3, 2012, 8:48 p.m.
The Book Code: A Challenge for Bookworms200March 21, 2012, 10:23 p.m.
ECDH-Key Exchange for Beginners150Feb. 25, 2012, 12:13 a.m.
Partial Key Exposure with RSA — Part 12,000Feb. 11, 2012, 2:53 p.m.
Factorization Cipher — Part 31,824Jan. 8, 2012, 1:11 a.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme1,159Dec. 30, 2011, 6:27 p.m.
Pigpen with a twist — Part 31,222Dec. 23, 2011, 3:45 p.m.
Monoalphabetic substitution with camouflage — Part 4200Dec. 22, 2011, 11:32 a.m.
Lattice Part 11,169Dec. 22, 2011, 12:27 a.m.
Monoalphabetic Substitution100Dec. 16, 2011, 11:43 a.m.
RSA: Two different keys — same ciphertext1,217Dec. 16, 2011, midnight
Kaskade-S/T — Part 1100Dec. 14, 2011, 3:52 p.m.
Monoalphabetic substitution with camouflage — Part 21,547Dec. 13, 2011, 9:43 p.m.
Unusual encryption using a diophantine equation1,229Dec. 13, 2011, 12:25 p.m.
Playfair Encryption100Dec. 13, 2011, 1:34 a.m.
Zodiac Cipher100Dec. 12, 2011, 11:39 p.m.
One-Time Pad with Flaws100Dec. 12, 2011, 12:09 a.m.
Broadcasting and low exponent — RSA Attack1,207Dec. 11, 2011, 8:56 p.m.
Alice's Birthday Party (Part 2)1,151Dec. 11, 2011, 8:36 p.m.
Alice's Birthday Party (Part 1)1,151Dec. 11, 2011, 8:04 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100Dec. 11, 2011, 5:45 p.m.
A modified homophonic cipher with reduced alphabets — Part 1100Dec. 11, 2011, 5:14 p.m.
Monoalphabetic substitution with camouflage — Part 31,660Dec. 10, 2011, 8:34 p.m.
Caesar Encryption100Dec. 10, 2011, 3:23 p.m.
Pigpen with a twist — Part 1101Dec. 10, 2011, 2:49 p.m.
Grille Cipher102Dec. 9, 2011, 11:29 p.m.
Classical Ciphers^3100Dec. 9, 2011, 10:58 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,151Dec. 8, 2011, 1:36 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid101Dec. 7, 2011, 10:35 p.m.
Factorization Cipher — Part 21,547Dec. 7, 2011, 9:47 p.m.
Factorization Cipher — Part 1102Dec. 6, 2011, 7:53 p.m.
Modified Caesar Cipher101Dec. 6, 2011, 1:05 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100Dec. 5, 2011, 1:01 p.m.
Number Sequence — Part 2101Dec. 4, 2011, 11:30 p.m.
Number Sequence100Dec. 4, 2011, 11:26 p.m.
Original Caesar Cipher100Dec. 4, 2011, 10:45 p.m.

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