Account

Name
Viktor
Username
Veselovský
Joined
July 27, 2011, 3:13 p.m.

Points
177,325
Rank
13
Trophies
Gold28
Silver23
Bronze19

Progress
Level I Challenges
82 / 92
Level II Challenges
86 / 174
Level III Challenges
2 / 75
Level X Challenges
4 / 18

Active Challenges (5)

LevelNameAttemptsDate
The Heavy T52 Sturgeon Challenge — Part 31 / 15Nov. 16, 2019, 12:55 p.m.
Extended Handycipher — Part 31 / 15Feb. 22, 2019, 2:40 a.m.
ORYX Stream Cipher — Part 4a1 / 15May 2, 2014, 11:14 p.m.
Monoalphabetic Substitution with Camouflage — Part 61 / 15July 30, 2012, 8:56 p.m.
Kaskade-S/T — Part 51 / 20Oct. 21, 2011, 12:21 a.m.

Solved Challenges (174)

LevelNamePointsDate
The Syllabary Cipher – Part 32,000Oct. 28, 2022, 5:57 p.m.
The Syllabary Cipher – Part 22,000Oct. 28, 2022, 5:35 p.m.
The Syllabary Cipher – Part 1200Oct. 28, 2022, 5:31 p.m.
Hill Cipher1,281Oct. 26, 2022, 8:50 p.m.
Merkle-Hellman Knapsack Challenge — Part 22,000Oct. 15, 2022, 12:39 a.m.
Merkle-Hellman Knapsack Challenge - Part 1200Oct. 14, 2022, 8:49 p.m.
Alberti Challenge — Part 1200March 26, 2022, 10:01 p.m.
Wheatstone Cryptograph — Part 1200April 22, 2021, 2:20 a.m.
M-138 — Part 31,097Aug. 29, 2020, 1:15 p.m.
Lightweight Introduction to Lattices — Part 32,000July 16, 2020, 10 p.m.
Lightweight Introduction to Lattices — Part 2120June 28, 2020, 11:13 a.m.
Lightweight Introduction to Lattices — Part 1200May 17, 2020, 2:15 p.m.
Polyhomophonic Substitution — Part 32,000April 7, 2020, 3:49 p.m.
Polyphonic Substitution Cipher — Part 11,213March 30, 2020, 12:37 a.m.
Polyphonic Substitution Cipher — Part 21,251March 29, 2020, 6:09 p.m.
Polyhomophonic Substitution — Part 22,000March 29, 2020, 12:49 p.m.
Polyhomophonic Substitution — Part 1200March 22, 2020, 8:47 a.m.
The LoRa Cipher: Logic Randomness — Part 12,000Feb. 19, 2020, 10:35 p.m.
Cipher ID — Part 12,000Nov. 19, 2019, 2:41 p.m.
A Cloaked Substitution Cipher — Part 22,000Aug. 26, 2019, 1:43 a.m.
A Cloaked Substitution Cipher — Part 11,660Aug. 24, 2019, 5:35 p.m.
Handycipher made in love — Part 22,000May 21, 2019, 11:37 p.m.
Homophonic Encryption — Part 21,725May 11, 2019, 12:58 a.m.
Homophonic Encryption — Part 42,000May 9, 2019, 12:56 a.m.
Homophonic Encryption — Part 32,000May 9, 2019, 12:41 a.m.
Homophonic Encryption — Part 11,725May 6, 2019, 7 p.m.
Cryptanalysis Hacking Puzzles — Part 2102March 10, 2019, 11:36 a.m.
Weakened Handycipher — Part 31,108Feb. 22, 2019, 11:32 p.m.
Weakened Handycipher — Part 11,108Feb. 22, 2019, 7:24 p.m.
Weakened Handycipher — Part 21,108Feb. 22, 2019, 6:57 p.m.
Handycipher made in love — Part 12,000Feb. 16, 2019, 11:50 p.m.
Monoalphabetic Substitution with Nostradamus Flavor2,000Feb. 16, 2019, 11:02 p.m.
"The Road" — Part 11,613Dec. 13, 2018, 3:15 p.m.
Catherine of Aragon's Letter to King Ferdinand, her Father (1509)2,000Dec. 11, 2018, 3:52 p.m.
RSA Factoring Challenge: RSA-2300Nov. 7, 2018, 10:42 p.m.
Cryptanalysis Hacking Puzzles — Part 1200Oct. 26, 2018, 10:47 p.m.
Breaking a Filter Generator1,725Sept. 27, 2018, 10:20 p.m.
Autokey Cipher200Sept. 25, 2018, 10:11 p.m.
Modular Sequences200Sept. 25, 2018, 9:39 p.m.
Trendy Messenger1,725June 14, 2018, 7:05 p.m.
Fastest in the West1,725June 14, 2018, 4:21 p.m.
Summer Job2,000June 12, 2018, 11:34 p.m.
Number Sequence — Part 10200April 18, 2018, 8:31 p.m.
The Einstein Enigma1,523Feb. 15, 2018, 6:12 p.m.
Advent Challenge — Part 32,000Dec. 22, 2017, 7:30 p.m.
Advent Challenge — Part 42,000Dec. 21, 2017, 6:47 p.m.
AES ECB Wrong Encoding2,000Dec. 17, 2017, 6:10 p.m.
Advent-Challenge — Part 22,000Dec. 17, 2017, 12:30 p.m.
Advent-Challenge — Part 1200Dec. 8, 2017, 10:36 p.m.
Number Sequence — Part 9200Nov. 17, 2017, 2:41 p.m.
Holographic Encryption — Part 21,613April 12, 2017, 6:46 p.m.
Holographic Encryption — Part 11,660April 11, 2017, 9:41 a.m.
Hilly — Part 11,385Feb. 13, 2017, 7:33 p.m.
RSA Factoring Challenge: RSA-2200Nov. 23, 2016, 11:38 a.m.
New Year's Greetings — Part 51,576March 26, 2016, 1:20 p.m.
New Year's Greetings — Part 4133March 23, 2016, 10:33 p.m.
New Year's Greetings — Part 3133March 23, 2016, 9:47 p.m.
New Year's Greetings — Part 2133March 23, 2016, 9:28 p.m.
New Year's Greetings — Part 1133March 23, 2016, 9:21 p.m.
Image Noise200Nov. 20, 2015, 10:18 p.m.
News from Castle Mansfeld200Nov. 13, 2015, 10:52 p.m.
Weakened Granit — Part 1117Sept. 29, 2015, 10:17 p.m.
Number Sequence — Part 8133Sept. 16, 2015, 10:07 a.m.
Number Sequence — Part 7102May 6, 2015, 11:40 p.m.
A hidden word — Part 2200April 16, 2015, 10:24 p.m.
Number Sequence — Part 6200March 23, 2015, 3:46 p.m.
M-138 — Part 22,000Dec. 24, 2014, 1:51 p.m.
M-138 — Part 1200Dec. 24, 2014, 12:52 p.m.
The Last Note200Sept. 23, 2014, 12:25 a.m.
Heartbleed — Part 31,547Sept. 3, 2014, 9:15 p.m.
Heartbleed — Part 2117Sept. 2, 2014, 3:18 p.m.
Heartbleed — Part 1120Sept. 1, 2014, 8:57 p.m.
Typex — Part 21,148July 2, 2014, 10:12 p.m.
Cascading Encryption — Part 3/31,148June 22, 2014, 10:08 p.m.
Cascading Encryption — Part 2/31,149June 9, 2014, 1:03 a.m.
Double Column Transposition — Part 41,824May 21, 2014, 10:03 a.m.
Double Column Transposition — Part 11,341May 2, 2014, 11:14 p.m.
Double Column Transposition — Part 32,000May 2, 2014, 11:01 p.m.
Double Column Transposition — Part 22,000May 2, 2014, 10:03 p.m.
Spanish Strip Cipher — Part 21,725March 30, 2014, 12:47 a.m.
Spanish Strip Cipher — Part 12,000March 28, 2014, 12:56 a.m.
Enigma Messages with Repeated Letters — Part 5200March 5, 2014, 10:25 p.m.
Enigma Messages with Repeated Letters — Part 4200March 5, 2014, 10:21 p.m.
Enigma Messages with Repeated Letters — Part 3200March 5, 2014, 10:02 p.m.
RSA Factoring Challenge: RSA-2100Nov. 27, 2013, 6:28 p.m.
Enigma Messages with Repeated Letters — Part 2200Oct. 29, 2013, 1:39 a.m.
Trifid Cipher200Oct. 29, 2013, 1:09 a.m.
Enigma Messages with Repeated Letters — Part 1200Sept. 26, 2013, 9:57 p.m.
Hill Cipher with Sudoku Key120Sept. 8, 2013, 9:59 p.m.
From Russia with Love120Sept. 8, 2013, 7:33 p.m.
Nils away on travel200Aug. 8, 2013, 1:43 p.m.
RSA Factoring Challenge: RSA-7040July 31, 2013, 7:30 p.m.
ORYX Stream Cipher — Part 3 (revised)2,000June 6, 2013, 10:17 p.m.
Notes of an Italian Soldier800May 4, 2013, 10:57 p.m.
Snow White and the seven dwarfs200April 20, 2013, 2:49 p.m.
Typex — Part 11,378March 20, 2013, 6:57 p.m.
Reserve Hand Procedure — Part 1200March 6, 2013, 10:41 p.m.
Multilingual Monoalphabetic Substitution200Jan. 31, 2013, 1:07 a.m.
Cascading Encryption — Part 1/3200Jan. 25, 2013, 3:50 p.m.
Enigma Messages200Jan. 23, 2013, 6:33 p.m.
Akelarre Part 11,126Jan. 18, 2013, 7:16 p.m.
Playfair with hints about the grid200Jan. 16, 2013, 6:13 p.m.
A hidden word200Jan. 6, 2013, 3:49 p.m.
Strange Message from Thessaloniki200Dec. 10, 2012, 9:35 p.m.
Recycled One-Time Pad114Nov. 26, 2012, 11:22 p.m.
Letter to the Templars — Part 32,000Oct. 9, 2012, 5:40 p.m.
BCR code (Book-Caesar-RSA)2,000Sept. 13, 2012, 3:09 a.m.
Beaver Code200Aug. 13, 2012, 9:17 p.m.
Letter to the Templars — Part 2200July 30, 2012, 8:56 p.m.
Letter to the Templars — Part 1200July 16, 2012, 10:14 p.m.
Keyshanc — Part 22,000May 21, 2012, 11:15 p.m.
Keyshanc — Part 12,000May 21, 2012, 10:46 p.m.
Concealed Messages — Vigenère's Night Sky2,000May 4, 2012, 3:23 a.m.
Number Sequence — Part 5114April 24, 2012, 7:50 p.m.
Number Sequence — Part 4114April 24, 2012, 7:50 p.m.
¿No Hablas Español? No problemo!200April 18, 2012, 8:40 p.m.
Number Sequence — Part 3200March 30, 2012, 11:56 p.m.
The Book Code: A Challenge for Bookworms200March 21, 2012, 2:09 p.m.
CMEA 214,086March 11, 2012, 1:41 p.m.
CMEA 11,147March 6, 2012, 2 p.m.
RSA with Special d14,042Feb. 24, 2012, 9:52 p.m.
ECDH-Key Exchange for Beginners200Feb. 24, 2012, 1:30 a.m.
Partial Key Exposure with RSA — Part 12,000Feb. 11, 2012, 1:32 p.m.
AES key — encoded in the machine readable zone of a European ePassport2,000Jan. 17, 2012, 3:26 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 21,179Dec. 4, 2011, 2:39 a.m.
Ku Klux Klan1,000Nov. 8, 2011, 1:52 p.m.
Zodiac Cipher100Oct. 19, 2011, 6:23 p.m.
Turing Bombe Enigma I200Oct. 18, 2011, 2:18 a.m.
Grille Cipher200Oct. 14, 2011, 7:55 p.m.
Double Columnar Transposition200Oct. 13, 2011, 1:28 p.m.
Enigma Combinatorics100Oct. 3, 2011, 3 p.m.
A Secret Message from Castle Mansfeld100Sept. 22, 2011, 1:35 a.m.
Kaskade-S/T — Part 31,188Sept. 18, 2011, 5:04 p.m.
Kaskade-S/T — Part 21,188Sept. 17, 2011, 11:18 p.m.
Kaskade-S/T — Part 1101Sept. 17, 2011, 4:33 p.m.
Pigpen with a twist — Part 21,423Sept. 17, 2011, 12:59 a.m.
A modified homophonic cipher with reduced alphabets — Part 1100Sept. 13, 2011, 6:22 p.m.
A modified homophonic cipher with reduced alphabets — Part 2100Sept. 13, 2011, 6 p.m.
Classical Ciphers^3100Sept. 13, 2011, 3:08 a.m.
Letter from the Alleged Countess Julie von Ortenburg100Sept. 11, 2011, 10:46 p.m.
Pigpen with a twist — Part 31,485Sept. 11, 2011, 2:50 p.m.
Molehunt (Part 3/3)1,163Sept. 9, 2011, 7:37 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,162Sept. 9, 2011, 6:07 p.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid200Sept. 9, 2011, 1:49 p.m.
Pigpen with a twist — Part 1200Sept. 5, 2011, 10:17 p.m.
Molehunt (Part 2/3)100Sept. 5, 2011, 4:44 p.m.
Molehunt (Part 1/3)100Sept. 2, 2011, 9:48 p.m.
Enigma Part 11,163Sept. 1, 2011, 11:28 p.m.
Enigma Part 21,163Sept. 1, 2011, 1:22 p.m.
ORYX Stream Cipher Part II1,163Aug. 30, 2011, 2:58 a.m.
Cracking SHA1-Hashed Passwords1,207Aug. 25, 2011, 2:37 p.m.
ORYX Stream Cipher Part I1,165Aug. 21, 2011, 12:03 a.m.
Smartcard RSA1,167Aug. 18, 2011, 5:32 p.m.
ADFGVX — Part 2200Aug. 16, 2011, 3:13 a.m.
ADFGVX — Part 1200Aug. 16, 2011, 2:35 a.m.
RSA: Two different keys — same ciphertext2,000Aug. 15, 2011, 8:15 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,166Aug. 13, 2011, 9:18 p.m.
Playfair Encryption100Aug. 13, 2011, 1:21 a.m.
Monoalphabetic Substitution100Aug. 12, 2011, 8:57 p.m.
Music Code — Part 21,240Aug. 12, 2011, 5:21 p.m.
Music Code — Part 1101Aug. 10, 2011, 7:46 a.m.
Lattice Part 11,203Aug. 9, 2011, 8:54 p.m.
Hybrid Encryption I1,170Aug. 9, 2011, 1:10 p.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme1,186Aug. 8, 2011, 8:07 p.m.
One-Time Pad with Flaws100Aug. 8, 2011, 3:10 a.m.
Alice's Birthday Party (Part 2)1,168July 31, 2011, 12:03 a.m.
Alice's Birthday Party (Part 1)1,168July 30, 2011, 11:35 p.m.
Broadcasting and low exponent — RSA Attack1,523July 30, 2011, 2:18 a.m.
Caesar Encryption100July 30, 2011, 12:33 a.m.
Original Caesar Cipher100July 29, 2011, 9:37 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1101July 29, 2011, 2:44 p.m.
Number Sequence — Part 2106July 28, 2011, 9:14 p.m.
Number Sequence100July 28, 2011, 9:08 p.m.
Not-so-Secret Message from Malawi — Part II (ECC)1,169July 27, 2011, 5:16 p.m.

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