Account

Name

Hans Joachim Girulat

Username

joregi

Joined

March 13, 2013, 6:26 p.m.

Points

36,278

Rank

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73 / 92

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Forum profile

Active Challenges (1)

Level	Name	Attempts	Date
	A really long number sequence	3 / 40	June 9, 2013, 8:09 p.m.

Solved Challenges (98)

Name	Points	Date
Homophonic Encryption — Part 1	1,261	July 9, 2019, 3:30 p.m.
Monoalphabetic Substitution with Nostradamus Flavor	1,223	June 7, 2019, 10:57 p.m.
Cryptanalysis Hacking Puzzles — Part 2	101	May 28, 2019, 10:20 p.m.
Cryptanalysis Hacking Puzzles — Part 1	100	May 28, 2019, 3:38 p.m.
Autokey Cipher	100	May 23, 2019, 7:57 p.m.
Advent Challenge — Part 4	1,178	Aug. 18, 2018, 6:12 p.m.
Advent-Challenge — Part 2	1,177	Aug. 16, 2018, 11:28 p.m.
Summer Job	1,278	Aug. 5, 2018, 5:41 p.m.
The Einstein Enigma	1,197	July 27, 2018, 7:49 p.m.
Number Sequence — Part 10	101	July 27, 2018, 3:41 p.m.
Advent-Challenge — Part 1	100	July 27, 2018, 2:02 p.m.
Heartbleed — Part 2	100	March 9, 2017, 8:34 p.m.
Heartbleed — Part 1	100	March 8, 2017, 8:08 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space	1,093	March 8, 2017, 1:59 p.m.
Double Column Transposition — Part 1	1,116	March 8, 2017, 12:49 a.m.
Hybrid Encryption I	1,094	March 2, 2017, 6:15 p.m.
Cracking SHA1-Hashed Passwords	1,096	Feb. 28, 2017, 9:18 p.m.
Broadcasting and low exponent — RSA Attack	1,097	Feb. 26, 2017, 12:56 a.m.
Alice's Birthday Party (Part 2)	1,094	Feb. 25, 2017, 7:40 p.m.
Alice's Birthday Party (Part 1)	1,094	Feb. 18, 2017, 12:09 a.m.
Zodiac Cipher	100	May 19, 2016, 2:17 p.m.
New Year's Greetings — Part 4	103	April 24, 2016, 1:29 p.m.
New Year's Greetings — Part 3	103	April 23, 2016, 11:11 p.m.
New Year's Greetings — Part 2	103	April 23, 2016, 10:57 p.m.
New Year's Greetings — Part 1	103	April 23, 2016, 10:36 p.m.
Double Columnar Transposition	100	Jan. 20, 2016, 2:44 p.m.
Number Sequence — Part 8	101	Jan. 16, 2016, 4:10 p.m.
Image Noise	102	Jan. 16, 2016, 3:20 p.m.
News from Castle Mansfeld	102	Jan. 4, 2016, 6:37 p.m.
BCR code (Book-Caesar-RSA)	1,114	Nov. 9, 2015, 8:16 p.m.
Weakened Granit — Part 1	102	Nov. 7, 2015, 9:32 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)	1,100	Oct. 23, 2015, 10:42 p.m.
Number Sequence — Part 6	101	Aug. 14, 2015, 8:30 p.m.
Recycled One-Time Pad	100	Aug. 11, 2015, 2:52 p.m.
Playfair Encryption	100	July 16, 2015, 3:05 p.m.
Strange Message from Thessaloniki	100	July 16, 2015, 2:07 p.m.
Playfair with hints about the grid	100	July 12, 2015, 6:21 p.m.
Enigma Messages	100	July 8, 2015, 10:53 p.m.
Hill Cipher with Sudoku Key	100	July 8, 2015, 4:50 p.m.
Pigpen with a twist — Part 2	1,108	June 24, 2015, 8:03 p.m.
Multilingual Monoalphabetic Substitution	100	June 2, 2015, 5:04 p.m.
Trifid Cipher	100	April 21, 2015, 9:26 a.m.
A hidden word — Part 2	125	April 19, 2015, 7:26 p.m.
Turing Bombe Enigma I	100	April 16, 2015, 11:40 p.m.
Enigma Part 2	1,103	April 10, 2015, 1:34 a.m.
Enigma Part 1	1,103	April 5, 2015, 10:13 p.m.
Enigma Messages with Repeated Letters — Part 5	100	April 4, 2015, 10:12 p.m.
Enigma Messages with Repeated Letters — Part 4	100	April 4, 2015, 10:05 p.m.
Enigma Messages with Repeated Letters — Part 3	100	April 3, 2015, 4:20 p.m.
Enigma Messages with Repeated Letters — Part 2	100	April 2, 2015, 10:45 p.m.
Enigma Messages with Repeated Letters — Part 1	100	March 30, 2015, 8:17 p.m.
Number Sequence — Part 3	100	Feb. 13, 2015, 9:43 p.m.
M-138 — Part 3	1,286	Feb. 11, 2015, 9:29 a.m.
Factorization Cipher — Part 3	1,115	Jan. 19, 2015, 3:40 p.m.
Monoalphabetic substitution with camouflage — Part 2	1,114	Jan. 16, 2015, 5:07 p.m.
Monoalphabetic substitution with camouflage — Part 1	100	Jan. 12, 2015, 9:13 p.m.
From Russia with Love	100	Jan. 12, 2015, midnight
M-138 — Part 2	1,406	Jan. 9, 2015, 11:42 p.m.
M-138 — Part 1	106	Jan. 8, 2015, 10:59 a.m.
¿No Hablas Español? No problemo!	100	Jan. 7, 2015, 11:27 p.m.
Nils away on travel	100	Jan. 7, 2015, 11 p.m.
The Last Note	101	Jan. 7, 2015, 10:19 p.m.
Molehunt (Part 2/3)	100	Aug. 28, 2013, 9:24 p.m.
Molehunt (Part 1/3)	100	Aug. 28, 2013, 8:50 p.m.
The Book Code: A Challenge for Bookworms	100	Aug. 5, 2013, 8:30 p.m.
Cascading Encryption — Part 1/3	101	July 19, 2013, 12:52 p.m.
Reserve Hand Procedure — Part 1	101	July 16, 2013, 10:44 a.m.
ADFGVX — Part 2	100	July 7, 2013, 7:50 p.m.
ADFGVX — Part 1	100	July 7, 2013, 6:32 p.m.
An 'unhearable' message	100	June 6, 2013, 6:15 p.m.
Snow White and the seven dwarfs	102	June 2, 2013, 3:31 p.m.
Pigpen with a twist — Part 1	100	May 29, 2013, 10:33 p.m.
Factorization Cipher — Part 2	1,140	May 27, 2013, 11:37 p.m.
A Secret Message from Castle Mansfeld	100	April 29, 2013, 10:14 p.m.
An Invisible Message	100	April 29, 2013, 4:47 p.m.
Number Sequence — Part 4	100	April 26, 2013, 7:56 a.m.
Music Code — Part 2	1,131	April 9, 2013, 10:58 p.m.
Music Code — Part 1	100	April 4, 2013, 10:59 p.m.
A modified homophonic cipher with reduced alphabets — Part 2	100	April 4, 2013, 7:06 p.m.
A modified homophonic cipher with reduced alphabets — Part 1	100	April 4, 2013, 5:49 p.m.
Modified Caesar Cipher	100	April 3, 2013, 6:42 p.m.
Classical Ciphers^3	100	April 3, 2013, 10:36 a.m.
Letter from the Alleged Countess Julie von Ortenburg	100	March 27, 2013, 10:27 p.m.
How do you become a big cryptographer?	100	March 24, 2013, 1:15 a.m.
Grille Cipher	100	March 23, 2013, 11:10 p.m.
One-Time Pad with Flaws	100	March 21, 2013, 9:31 p.m.
Factorization Cipher — Part 1	100	March 19, 2013, 10:41 p.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid	100	March 16, 2013, 11:34 p.m.
Beaver Code	100	March 16, 2013, 10:46 p.m.
Number Sequence	100	March 16, 2013, 8:06 p.m.
Letter to the Templars — Part 3	1,201	March 15, 2013, 7:02 p.m.
Letter to the Templars — Part 2	100	March 15, 2013, 6:18 p.m.
Letter to the Templars — Part 1	100	March 15, 2013, 5:53 p.m.
A hidden word	101	March 15, 2013, 1:16 p.m.
Caesar Encryption	100	March 15, 2013, 12:57 p.m.
Monoalphabetic Substitution	100	March 13, 2013, 11:05 p.m.
Number Sequence — Part 2	100	March 13, 2013, 8:49 p.m.
Original Caesar Cipher	100	March 13, 2013, 8:35 p.m.