Account

Name
RPH
Username
derichard
Joined
Sept. 2, 2012, 8:06 p.m.

Rank
73
Points
27,044
Trophies
Gold0
Silver0
Bronze0

Active Challenges (1)

LevelNameAttemptsDate
Typex — Part 11 / 15March 16, 2013, 8:58 a.m.

Solved Challenges (64)

LevelNamePointsDate
Hill Cipher with Sudoku Key100March 26, 2014, 9:41 a.m.
Enigma Messages with Repeated Letters — Part 5105March 24, 2014, 7:20 p.m.
Enigma Messages with Repeated Letters — Part 4105March 24, 2014, 7:16 p.m.
Enigma Messages with Repeated Letters — Part 3105March 24, 2014, 7:11 p.m.
Enigma Messages with Repeated Letters — Part 2101March 24, 2014, 7:02 p.m.
Enigma Messages with Repeated Letters — Part 1101March 24, 2014, 6:38 p.m.
Nils away on travel100March 23, 2014, 11:32 p.m.
From Russia with Love101March 22, 2014, 6:27 p.m.
Playfair Encryption100May 13, 2013, 9:32 p.m.
Kaskade-S/T — Part 1100May 1, 2013, 1:56 p.m.
Double Columnar Transposition100April 24, 2013, 11:38 p.m.
Snow White and the seven dwarfs120April 24, 2013, 11:02 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100April 19, 2013, 11:57 p.m.
Letter from the Alleged Countess Julie von Ortenburg100April 19, 2013, 5:58 p.m.
A really long number sequence1,137April 17, 2013, 11:10 p.m.
Not-so-Secret Message from Malawi — Part II (ECC)1,121April 17, 2013, midnight
ECDH-Key Exchange for Beginners100April 12, 2013, 10:10 a.m.
ADFGVX — Part 1100April 10, 2013, 9:26 p.m.
ADFGVX — Part 2100April 10, 2013, 9:12 p.m.
Enigma Part 11,122April 5, 2013, midnight
Enigma Part 21,122April 4, 2013, 11:39 p.m.
Turing Bombe Enigma I100April 4, 2013, 8:51 p.m.
Enigma Combinatorics100April 3, 2013, 10:31 p.m.
How do you become a big cryptographer?100April 1, 2013, 8:22 p.m.
Cascading Encryption — Part 1/3102March 28, 2013, 10:30 p.m.
Pigpen with a twist — Part 1100March 21, 2013, 3:18 p.m.
Number Sequence — Part 4100March 20, 2013, 10:08 a.m.
Number Sequence — Part 3100March 20, 2013, 9:52 a.m.
The Book Code: A Challenge for Bookworms100March 20, 2013, 9:33 a.m.
Molehunt (Part 3/3)1,123March 18, 2013, 6:21 p.m.
Molehunt (Part 2/3)100March 18, 2013, 3:26 p.m.
Molehunt (Part 1/3)100March 18, 2013, 2:51 p.m.
A hidden word101March 16, 2013, 1:03 p.m.
Reserve Hand Procedure — Part 1110March 16, 2013, 12:52 p.m.
Letter to the Templars — Part 31,201March 16, 2013, 8:58 a.m.
Keyshanc — Part 11,217Sept. 20, 2012, 12:17 a.m.
AES key — encoded in the machine readable zone of a European ePassport1,176Sept. 18, 2012, 2:20 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,130Sept. 18, 2012, 1:30 a.m.
Hybrid Encryption I1,131Sept. 16, 2012, 4:56 p.m.
RSA: Two different keys — same ciphertext1,153Sept. 16, 2012, 3:57 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,130Sept. 16, 2012, 2:29 p.m.
Broadcasting and low exponent — RSA Attack1,151Sept. 16, 2012, 1:15 p.m.
Alice's Birthday Party (Part 2)1,130Sept. 16, 2012, 12:40 p.m.
Alice's Birthday Party (Part 1)1,130Sept. 15, 2012, 1:34 p.m.
BCR code (Book-Caesar-RSA)1,824Sept. 13, 2012, 10:38 p.m.
Cracking SHA1-Hashed Passwords1,142Sept. 13, 2012, 12:31 p.m.
Beaver Code103Sept. 12, 2012, 4:41 p.m.
Factorization Cipher — Part 31,176Sept. 12, 2012, 2:43 a.m.
Factorization Cipher — Part 21,169Sept. 10, 2012, 4:12 p.m.
Letter to the Templars — Part 2102Sept. 9, 2012, 10:13 p.m.
Letter to the Templars — Part 1102Sept. 9, 2012, 8:14 p.m.
Grille Cipher100Sept. 9, 2012, 7:44 p.m.
Number Sequence — Part 2100Sept. 9, 2012, 6:32 p.m.
Factorization Cipher — Part 1100Sept. 5, 2012, 3:32 p.m.
¿No Hablas Español? No problemo!101Sept. 5, 2012, 2:15 p.m.
One-Time Pad with Flaws100Sept. 5, 2012, 12:41 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100Sept. 4, 2012, 8:41 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100Sept. 4, 2012, 6:56 p.m.
A modified homophonic cipher with reduced alphabets — Part 1100Sept. 4, 2012, 6:26 p.m.
Monoalphabetic Substitution100Sept. 3, 2012, 9:38 p.m.
Modified Caesar Cipher100Sept. 3, 2012, 2:35 a.m.
Caesar Encryption100Sept. 3, 2012, 12:05 a.m.
Original Caesar Cipher100Sept. 2, 2012, 11:18 p.m.
Number Sequence100Sept. 2, 2012, 10:16 p.m.

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