Account

Name
Rainer Zufall
Username
kiekuk
Joined
Feb. 19, 2015, 5:18 p.m.

Rank
31
Points
56,786
Trophies
Gold0
Silver1
Bronze4

Solved Challenges (126)

LevelNamePointsDate
RSA Factoring Challenge: RSA-2300March 14, 2019, 10:07 p.m.
Cryptanalysis Hacking Puzzles — Part 2102March 7, 2019, 9:54 a.m.
Handycipher made in love — Part 11,406March 4, 2019, 2:32 p.m.
Monoalphabetic Substitution with Nostradamus Flavor1,444Feb. 28, 2019, 4:30 p.m.
Trendy Messenger1,199Nov. 23, 2018, 9:37 p.m.
Fastest in the West1,206Nov. 3, 2018, 9:05 p.m.
Cryptanalysis Hacking Puzzles — Part 1113Nov. 3, 2018, 12:57 p.m.
Summer Job1,206Nov. 3, 2018, 12:37 p.m.
Unconcealed RSA messages1,091Nov. 3, 2018, 10:41 a.m.
Modular Sequences103Nov. 1, 2018, 7:44 p.m.
Autokey Cipher103Oct. 29, 2018, 10:51 p.m.
Number Sequence — Part 10113April 25, 2018, 11:01 p.m.
The Einstein Enigma1,414Feb. 23, 2018, 9:36 p.m.
Advent Challenge — Part 31,576Dec. 28, 2017, 4:21 p.m.
Advent Challenge — Part 41,547Dec. 28, 2017, 2:16 p.m.
RSA Factoring Challenge: RSA-2200Dec. 19, 2017, 10:48 p.m.
Advent-Challenge — Part 21,725Dec. 19, 2017, 6:36 p.m.
Advent-Challenge — Part 1133Dec. 11, 2017, 2:50 p.m.
Number Sequence — Part 9107Nov. 29, 2017, 10:29 p.m.
Ku Klux Klan1,000Sept. 9, 2016, 1:40 p.m.
Monoalphabetic substitution with camouflage — Part 31,102Aug. 4, 2016, 10:22 p.m.
Monoalphabetic substitution with camouflage — Part 21,102Aug. 3, 2016, 12:36 p.m.
Double Column Transposition — Part 41,126July 20, 2016, 9:51 p.m.
Double Column Transposition — Part 31,125July 18, 2016, 10:45 p.m.
Double Column Transposition — Part 21,125July 18, 2016, 6:03 p.m.
M-138 — Part 31,138July 18, 2016, 11:04 a.m.
Unusual encryption using a diophantine equation1,103March 29, 2016, 12:12 p.m.
New Year's Greetings — Part 51,725March 23, 2016, 3:46 p.m.
New Year's Greetings — Part 4200March 21, 2016, 11:47 p.m.
New Year's Greetings — Part 3200March 21, 2016, 11:19 p.m.
New Year's Greetings — Part 2200March 21, 2016, 9:24 p.m.
New Year's Greetings — Part 1200March 21, 2016, 8:58 p.m.
Partial Key Exposure with RSA — Part 11,106Feb. 26, 2016, 11:24 p.m.
Molehunt (Part 3/3)1,098Feb. 7, 2016, 11:39 a.m.
Heartbleed — Part 31,142Feb. 2, 2016, 4:31 p.m.
Music Code — Part 1100Jan. 22, 2016, 9:41 p.m.
Monoalphabetic substitution with camouflage — Part 4100Jan. 19, 2016, 11:49 a.m.
Music Code — Part 21,102Jan. 15, 2016, 10:10 p.m.
An 'unhearable' message100Jan. 14, 2016, 3:44 p.m.
Strange Message from Thessaloniki100Jan. 13, 2016, 4:33 p.m.
Monoalphabetic substitution with camouflage — Part 1100Jan. 11, 2016, 6:20 p.m.
An Invisible Message100Dec. 8, 2015, 9:23 a.m.
News from Castle Mansfeld111Nov. 21, 2015, 8:43 p.m.
Image Noise200Nov. 21, 2015, 10:31 a.m.
Recycled One-Time Pad100Nov. 19, 2015, 3:45 p.m.
Playfair with hints about the grid100Oct. 4, 2015, 6:02 p.m.
Playfair Encryption100Oct. 4, 2015, 5:41 p.m.
Multilingual Monoalphabetic Substitution100Sept. 30, 2015, 10 p.m.
Weakened Granit — Part 1120Sept. 28, 2015, 6:19 p.m.
Number Sequence — Part 8133Sept. 16, 2015, 7:02 p.m.
AES key — encoded in the machine readable zone of a European ePassport1,112May 19, 2015, 6:31 p.m.
ECDH-Key Exchange for Beginners100May 7, 2015, 12:06 p.m.
ADFGVX — Part 1100April 28, 2015, 6:37 p.m.
ADFGVX — Part 2100April 28, 2015, 3:58 p.m.
Kaskade-S/T — Part 1100April 27, 2015, 9:35 p.m.
Heartbleed — Part 2100April 24, 2015, 11:36 p.m.
A really long number sequence1,109April 24, 2015, 10:01 p.m.
RSA Factoring Challenge: RSA-2100April 23, 2015, 3:31 p.m.
RSA Factoring Challenge: RSA-7040April 23, 2015, 3:29 p.m.
Zodiac Cipher100April 20, 2015, 5:33 p.m.
A hidden word — Part 2200April 16, 2015, 10:46 p.m.
Heartbleed — Part 1 100April 15, 2015, 1:19 p.m.
Hill Cipher with Sudoku Key100April 13, 2015, 10:55 p.m.
BCR code (Book-Caesar-RSA)1,120April 12, 2015, 7:44 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,103April 7, 2015, 10:18 p.m.
Cascading Encryption — Part 1/3100April 7, 2015, 9:31 p.m.
Hybrid Encryption I1,103April 7, 2015, 4:01 p.m.
Trifid Cipher100April 7, 2015, 3:06 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,103April 6, 2015, 12:12 a.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100April 4, 2015, 10:39 a.m.
M-138 — Part 21,230April 3, 2015, 7:20 p.m.
Pigpen with a twist — Part 1100April 1, 2015, 2:50 p.m.
RSA: Two different keys — same ciphertext1,109April 1, 2015, 11:48 a.m.
Alice's Birthday Party (Part 2)1,103April 1, 2015, 10:15 a.m.
Broadcasting and low exponent — RSA Attack1,109April 1, 2015, 9:53 a.m.
Alice's Birthday Party (Part 1)1,103April 1, 2015, 9:45 a.m.
Double Columnar Transposition100March 30, 2015, 9:38 p.m.
M-138 — Part 1101March 28, 2015, 8:25 p.m.
Factorization Cipher — Part 31,113March 28, 2015, 7:37 p.m.
Number Sequence — Part 7120March 27, 2015, 12:41 p.m.
Letter from the Alleged Countess Julie von Ortenburg100March 26, 2015, 7:33 p.m.
Reserve Hand Procedure — Part 1100March 25, 2015, 10:13 p.m.
Molehunt (Part 2/3)100March 25, 2015, 9:08 p.m.
Molehunt (Part 1/3)100March 25, 2015, 9:02 p.m.
Number Sequence — Part 6150March 24, 2015, 12:35 p.m.
Classical Ciphers^3100March 18, 2015, 11 p.m.
Factorization Cipher — Part 21,113March 9, 2015, 7:16 p.m.
The Last Note101March 4, 2015, 5:35 p.m.
Modified Caesar Cipher100March 3, 2015, 8:11 p.m.
Cracking SHA1-Hashed Passwords1,107March 2, 2015, 10:15 p.m.
One-Time Pad with Flaws100March 2, 2015, 5:50 p.m.
How do you become a big cryptographer?100March 1, 2015, 11:08 p.m.
A Secret Message from Castle Mansfeld100Feb. 28, 2015, 8:02 p.m.
Nils away on travel100Feb. 28, 2015, 12:13 a.m.
Turing Bombe Enigma I100Feb. 26, 2015, 8:33 p.m.
Enigma Part 21,104Feb. 26, 2015, 7:33 p.m.
Enigma Part 11,104Feb. 26, 2015, 7:01 p.m.
¿No Hablas Español? No problemo!100Feb. 26, 2015, 6:23 p.m.
Number Sequence — Part 5100Feb. 26, 2015, 3:10 p.m.
The Book Code: A Challenge for Bookworms100Feb. 26, 2015, 9:16 a.m.
From Russia with Love100Feb. 25, 2015, 10:38 a.m.
A modified homophonic cipher with reduced alphabets — Part 2100Feb. 24, 2015, 8:08 p.m.
A modified homophonic cipher with reduced alphabets — Part 1100Feb. 24, 2015, 7:38 p.m.
Grille Cipher100Feb. 24, 2015, 5:52 p.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100Feb. 24, 2015, 5:30 p.m.
A hidden word100Feb. 23, 2015, 9:37 p.m.
Enigma Combinatorics100Feb. 23, 2015, 7:42 p.m.
Letter to the Templars — Part 31,123Feb. 23, 2015, 12:04 p.m.
Letter to the Templars — Part 2100Feb. 23, 2015, 11:53 a.m.
Letter to the Templars — Part 1100Feb. 23, 2015, 11:46 a.m.
Number Sequence — Part 3100Feb. 23, 2015, 9:16 a.m.
Snow White and the seven dwarfs100Feb. 22, 2015, 8:55 p.m.
Monoalphabetic Substitution100Feb. 22, 2015, 8:28 p.m.
Factorization Cipher — Part 1100Feb. 22, 2015, 7:52 p.m.
Beaver Code100Feb. 21, 2015, 10:59 p.m.
Number Sequence — Part 2100Feb. 21, 2015, 9:28 p.m.
Number Sequence — Part 4100Feb. 21, 2015, 9:05 p.m.
Original Caesar Cipher100Feb. 21, 2015, 7:04 p.m.
Caesar Encryption100Feb. 21, 2015, 7:02 p.m.
Number Sequence100Feb. 21, 2015, 5:54 p.m.
Enigma Messages100Feb. 20, 2015, 6:02 p.m.
Enigma Messages with Repeated Letters — Part 5100Feb. 19, 2015, 11:27 p.m.
Enigma Messages with Repeated Letters — Part 4100Feb. 19, 2015, 11:23 p.m.
Enigma Messages with Repeated Letters — Part 2100Feb. 19, 2015, 11:20 p.m.
Enigma Messages with Repeated Letters — Part 3100Feb. 19, 2015, 11:16 p.m.
Enigma Messages with Repeated Letters — Part 1100Feb. 19, 2015, 6:21 p.m.

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