Account

Name
HolgerK
Username
HolgerK
Joined
Nov. 19, 2014, 7:52 p.m.

Rank
77
Points
25,776
Trophies
Gold0
Silver0
Bronze1

Solved Challenges (85)

LevelNamePointsDate
Advent-Challenge — Part 21,824Dec. 17, 2017, 9:40 p.m.
RSA Factoring Challenge: RSA-2200Dec. 8, 2017, 9:34 p.m.
Number Sequence — Part 9104Dec. 8, 2017, 9:29 p.m.
Advent-Challenge — Part 1200Dec. 8, 2017, 8:51 p.m.
New Year's Greetings — Part 4133March 23, 2016, 7:58 p.m.
New Year's Greetings — Part 3133March 23, 2016, 7:34 p.m.
New Year's Greetings — Part 2133March 23, 2016, 7:21 p.m.
New Year's Greetings — Part 1133March 23, 2016, 6:41 p.m.
Cascading Encryption — Part 1/3100March 23, 2016, 6:22 p.m.
Heartbleed — Part 31,140Feb. 29, 2016, 9:47 p.m.
Heartbleed — Part 2100Feb. 29, 2016, 9:47 p.m.
Heartbleed — Part 1 100Feb. 29, 2016, 9:46 p.m.
News from Castle Mansfeld101Feb. 12, 2016, 11:06 p.m.
Number Sequence — Part 8101Feb. 11, 2016, 12:35 a.m.
Image Noise101Feb. 11, 2016, 12:34 a.m.
Beaver Code100Feb. 11, 2016, 12:33 a.m.
Monoalphabetic Substitution with Camouflage — Part 51,113May 14, 2015, 8:38 p.m.
Monoalphabetic substitution with camouflage — Part 4100May 14, 2015, 12:13 a.m.
Monoalphabetic substitution with camouflage — Part 31,111May 13, 2015, 6:35 p.m.
RSA Factoring Challenge: RSA-2100April 23, 2015, 10:59 a.m.
RSA Factoring Challenge: RSA-7040April 23, 2015, 10:58 a.m.
Monoalphabetic substitution with camouflage — Part 21,112April 18, 2015, 3:33 p.m.
Monoalphabetic substitution with camouflage — Part 1100April 17, 2015, 9:39 p.m.
A hidden word — Part 2200April 16, 2015, 10:37 p.m.
Pigpen with a twist — Part 31,109April 14, 2015, 8:43 p.m.
Pigpen with a twist — Part 1100April 14, 2015, 8:43 p.m.
Number Sequence — Part 7133March 25, 2015, 8:01 p.m.
Number Sequence — Part 6150March 25, 2015, 11:19 a.m.
Concealed Messages — Vigenère's Night Sky1,117Feb. 17, 2015, 12:22 p.m.
Music Code — Part 21,109Feb. 3, 2015, 6:37 p.m.
Music Code — Part 1100Feb. 3, 2015, 6:37 p.m.
Factorization Cipher — Part 31,114Feb. 3, 2015, 12:55 a.m.
Factorization Cipher — Part 21,113Feb. 3, 2015, 12:55 a.m.
Playfair with hints about the grid100Jan. 27, 2015, 8:41 p.m.
Playfair Encryption100Jan. 27, 2015, 8:40 p.m.
Recycled One-Time Pad100Jan. 26, 2015, 10:13 p.m.
M-138 — Part 21,330Jan. 25, 2015, 12:07 a.m.
M-138 — Part 1103Jan. 24, 2015, 8:22 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,104Jan. 24, 2015, 2:19 p.m.
Classical Ciphers^3100Jan. 22, 2015, 10:32 p.m.
¿No Hablas Español? No problemo!100Jan. 20, 2015, 11:55 p.m.
An 'unhearable' message100Jan. 19, 2015, 10:30 p.m.
ADFGVX — Part 2100Jan. 16, 2015, 7:37 p.m.
ADFGVX — Part 1100Jan. 16, 2015, 7:36 p.m.
Multilingual Monoalphabetic Substitution100Jan. 15, 2015, 10:28 p.m.
An Invisible Message100Jan. 15, 2015, 9:59 p.m.
Cracking SHA1-Hashed Passwords1,108Jan. 14, 2015, 11:33 p.m.
Hill Cipher with Sudoku Key100Jan. 14, 2015, 10:04 p.m.
The Last Note101Jan. 11, 2015, 3:17 a.m.
Strange Message from Thessaloniki100Jan. 11, 2015, 12:50 a.m.
ECDH-Key Exchange for Beginners100Jan. 10, 2015, 8:55 p.m.
How do you become a big cryptographer?100Jan. 9, 2015, 1:42 a.m.
Zodiac Cipher100Jan. 9, 2015, 12:43 a.m.
Trifid Cipher100Dec. 22, 2014, 11:55 p.m.
The Book Code: A Challenge for Bookworms100Dec. 22, 2014, 11:42 p.m.
From Russia with Love100Dec. 22, 2014, 11:41 p.m.
Nils away on travel100Dec. 22, 2014, 11:41 p.m.
Double Columnar Transposition100Dec. 9, 2014, 7:52 p.m.
A Secret Message from Castle Mansfeld100Dec. 6, 2014, 5:06 p.m.
Molehunt (Part 3/3)1,106Dec. 6, 2014, 5:03 p.m.
Molehunt (Part 2/3)100Dec. 6, 2014, 5:03 p.m.
Molehunt (Part 1/3)100Dec. 6, 2014, 5:02 p.m.
Letter from the Alleged Countess Julie von Ortenburg100Nov. 27, 2014, 7:39 p.m.
A hidden word100Nov. 26, 2014, 7:19 p.m.
Snow White and the seven dwarfs100Nov. 26, 2014, 7:15 p.m.
A really long number sequence1,113Nov. 25, 2014, 11:27 p.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100Nov. 25, 2014, 7:26 p.m.
Number Sequence — Part 5100Nov. 24, 2014, 9:30 p.m.
Factorization Cipher — Part 1100Nov. 24, 2014, 5:43 p.m.
Reserve Hand Procedure — Part 1100Nov. 23, 2014, 2:57 p.m.
Modified Caesar Cipher100Nov. 22, 2014, 5:46 p.m.
One-Time Pad with Flaws100Nov. 22, 2014, 2:06 p.m.
Grille Cipher100Nov. 21, 2014, 8:45 p.m.
Monoalphabetic Substitution100Nov. 21, 2014, 8:21 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100Nov. 21, 2014, 12:22 a.m.
A modified homophonic cipher with reduced alphabets — Part 1100Nov. 20, 2014, 10:53 p.m.
Letter to the Templars — Part 31,127Nov. 20, 2014, 12:33 a.m.
Letter to the Templars — Part 2100Nov. 20, 2014, 12:19 a.m.
Letter to the Templars — Part 1100Nov. 20, 2014, 12:04 a.m.
Caesar Encryption100Nov. 19, 2014, 11:42 p.m.
Original Caesar Cipher100Nov. 19, 2014, 10:36 p.m.
Number Sequence — Part 4100Nov. 19, 2014, 9:44 p.m.
Number Sequence — Part 3100Nov. 19, 2014, 9:32 p.m.
Number Sequence — Part 2100Nov. 19, 2014, 9:23 p.m.
Number Sequence100Nov. 19, 2014, 9:20 p.m.

Currently 15 guests and one member are online.
Powered by the CrypTool project
© 2009-2021 MysteryTwister team