Account

Name
Eugene
Username
lim0n
Joined
April 4, 2019, 10:53 a.m.

Rank
9
Points
199,334
Trophies
Gold8
Silver6
Bronze6

Solved Challenges (194)

LevelNamePointsDate
The SZ42 Challenge — Part 132,000Oct. 7, 2021, 8:44 a.m.
The SZ42 Challenge — Part 122,000Oct. 7, 2021, 7:12 a.m.
Kaskade-S/T — Part 31,082Aug. 23, 2021, 2:38 p.m.
M-138 — Part 41,092Aug. 21, 2021, 4:42 p.m.
ElsieFour — Part 113,512July 20, 2021, 12:27 p.m.
Weakened ElsieFour — Part 31,108July 18, 2021, 2:28 p.m.
Wheatstone Cryptograph — Part 22,000May 21, 2021, 7:56 p.m.
Weakened ElsieFour — Part 11,115May 10, 2021, 7:34 p.m.
Wheatstone Cryptograph — Part 1200April 22, 2021, 12:34 p.m.
The SZ42 Challenge — Part 111,269April 1, 2021, 8:15 a.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 21,083April 1, 2021, 8:09 a.m.
The SZ42 Challenge — Part 102,000Jan. 30, 2021, 5:18 p.m.
Monoalphabetic Substitution with Camouflage — Part 51,086Jan. 23, 2021, 1:01 p.m.
Find the right route — Part 3200Dec. 27, 2020, 1:56 p.m.
Find the right route — Part 2200Dec. 20, 2020, 12:44 p.m.
The SZ42 Challenge — Part 92,000Dec. 20, 2020, 11:05 a.m.
The SZ42 Challenge — Part 82,000Oct. 31, 2020, 8:54 p.m.
Find the right route — Part 1200Oct. 28, 2020, 9:35 a.m.
The SZ42 Challenge — Part 72,000Oct. 28, 2020, 6:31 a.m.
The SZ42 Challenge — Part 62,000Oct. 3, 2020, 2:07 p.m.
Sigaba Part 213,091Sept. 15, 2020, 6:36 p.m.
The SIGABA Challenge — Part 21,190Sept. 10, 2020, 10:24 p.m.
The SIGABA Challenge — Part 11,190Sept. 6, 2020, 6:11 p.m.
The SZ42 Challenge — Part 52,000Sept. 3, 2020, 8:26 p.m.
Sigaba Part 11,083Sept. 2, 2020, 9:39 p.m.
The SZ42 Challenge — Part 42,000Aug. 30, 2020, 12:42 p.m.
Purple 11,083Aug. 23, 2020, 3:44 p.m.
CMEA 213,100Aug. 22, 2020, 8:23 a.m.
The SZ42 Challenge — Part 32,000Aug. 16, 2020, 12:35 p.m.
Lattice Part 11,084Aug. 6, 2020, 1:54 p.m.
The SZ42 Challenge — Part 22,000Aug. 5, 2020, 9:28 p.m.
Typex — Part 21,090July 29, 2020, 4:01 p.m.
Typex — Part 11,090July 27, 2020, 5:05 p.m.
The SZ42 Challenge — Part 12,000July 23, 2020, 4:28 p.m.
Lightweight Introduction to Lattices — Part 32,000July 16, 2020, 10:58 p.m.
Akelarre Part 11,084July 8, 2020, 1:45 p.m.
Lightweight Introduction to Lattices — Part 2200June 24, 2020, 11:44 a.m.
Double Column Transposition — Part 21,095May 27, 2020, 2:57 p.m.
Spanish Strip Cipher — Part 11,094May 24, 2020, 4:11 p.m.
Double Column Transposition — Part 11,095May 22, 2020, noon
Lightweight Introduction to Lattices — Part 1200May 17, 2020, 12:10 p.m.
Double Column Transposition — Part 31,095May 11, 2020, 3:53 p.m.
Double Column Transposition — Part 41,095May 8, 2020, 9:06 p.m.
ASAC — A Strong(er) ADFGVX Cipher — Part 11,108April 25, 2020, 4:41 p.m.
Cascading Encryption — Part 3/31,091April 24, 2020, 6:32 p.m.
Cascading Encryption — Part 2/31,091April 23, 2020, 2:25 p.m.
Spanish Strip Cipher — Part 21,095April 8, 2020, 1 p.m.
Zodiac Cipher100April 7, 2020, 5:10 p.m.
Homophonic Encryption — Part 41,161April 7, 2020, 2:18 p.m.
Polyhomophonic Substitution — Part 22,000March 29, 2020, 2:49 p.m.
Polyhomophonic Substitution — Part 1200March 22, 2020, 10:06 a.m.
Monoalphabetic Substitution with Nostradamus Flavor1,155March 6, 2020, 1:47 p.m.
Enigma Part 11,084Feb. 28, 2020, 1:35 p.m.
RSA with Special d13,115Feb. 22, 2020, 11:24 a.m.
The LoRa Cipher: Logic Randomness — Part 12,000Feb. 20, 2020, 8:26 a.m.
Differential Cryptanalysis — Part 22,000Jan. 29, 2020, 5:52 a.m.
A really long number sequence1,087Jan. 21, 2020, 2:16 p.m.
Polyphonic Substitution Cipher — Part 22,000Jan. 15, 2020, 11:18 a.m.
Christmas Challenge 2019: Differential Cryptanalysis — Part 11,660Dec. 26, 2019, 4:31 p.m.
Smartcard RSA1,085Dec. 14, 2019, 6:51 p.m.
Partial Key Exposure with RSA — Part 11,088Dec. 12, 2019, 10:58 a.m.
Pigpen with a twist — Part 21,087Dec. 8, 2019, 4:27 p.m.
Polyphonic Substitution Cipher — Part 11,423Dec. 5, 2019, 5:45 p.m.
Pigpen with a twist — Part 31,087Nov. 26, 2019, 1:44 p.m.
Cipher ID — Part 11,725Nov. 21, 2019, 5:34 p.m.
Holographic Encryption — Part 21,120Nov. 16, 2019, 1:49 p.m.
Holographic Encryption — Part 11,120Nov. 8, 2019, 6:32 p.m.
"The Road" — Part 11,163Oct. 30, 2019, 12:18 p.m.
Not-so-Secret Message from Malawi — Part II (ECC)1,085Oct. 27, 2019, 11:04 a.m.
Monoalphabetic substitution with camouflage — Part 4100Oct. 21, 2019, 1:41 p.m.
Music Code — Part 21,087Oct. 20, 2019, 1:11 p.m.
Music Code — Part 1100Oct. 20, 2019, 1:09 p.m.
An 'unhearable' message100Oct. 18, 2019, 12:14 p.m.
Lunchtime Attack on the Fully Homomorphic Encryption Scheme1,086Oct. 12, 2019, 5:13 p.m.
Heartbleed — Part 2100Oct. 6, 2019, 4:45 p.m.
Heartbleed — Part 1 100Oct. 6, 2019, 3:24 p.m.
Molehunt (Part 3/3)1,085Oct. 6, 2019, 12:35 p.m.
Turing Bombe Enigma I100Oct. 5, 2019, 12:51 p.m.
Enigma Combinatorics100Oct. 5, 2019, 11:31 a.m.
Weakened Granit — Part 1100Oct. 3, 2019, 2:26 p.m.
Number Sequence — Part 9100Oct. 3, 2019, 10:46 a.m.
Number Sequence — Part 6100Oct. 2, 2019, 2:59 p.m.
The Book Code: A Challenge for Bookworms100Oct. 2, 2019, 1:38 p.m.
Keyshanc — Part 21,090Oct. 1, 2019, 11:21 a.m.
Keyshanc — Part 11,090Sept. 30, 2019, 3:02 p.m.
Playfair with hints about the grid100Sept. 30, 2019, 12:54 p.m.
Modular Sequences100Sept. 30, 2019, 11:53 a.m.
Number Sequence — Part 10100Sept. 29, 2019, 4:37 p.m.
Playfair Encryption100Sept. 29, 2019, 1:06 p.m.
Flawed Usage of a OTP Cipher by the BND1,106Sept. 28, 2019, 5:08 p.m.
ECDH-Key Exchange for Beginners100Sept. 27, 2019, 9:58 a.m.
Double Columnar Transposition100Sept. 26, 2019, 3:45 p.m.
A hidden word — Part 2100Sept. 26, 2019, 12:10 p.m.
Recycled One-Time Pad100Sept. 26, 2019, 10:51 a.m.
Strange Message from Thessaloniki100Sept. 24, 2019, 5:43 p.m.
Multilingual Monoalphabetic Substitution100Sept. 23, 2019, 4:11 p.m.
Autokey Cipher100Sept. 22, 2019, 4:24 p.m.
News from Castle Mansfeld100Sept. 22, 2019, 3:39 p.m.
A Secret Message from Castle Mansfeld100Sept. 22, 2019, 1:36 p.m.
An Invisible Message100Sept. 21, 2019, 4:21 p.m.
The Last Note100Sept. 21, 2019, 11:13 a.m.
Molehunt (Part 2/3)100Sept. 19, 2019, 4:22 p.m.
Molehunt (Part 1/3)100Sept. 19, 2019, 3:04 p.m.
Image Noise100Sept. 18, 2019, 2:15 p.m.
Enigma Messages100Sept. 17, 2019, 3:17 p.m.
Enigma Messages with Repeated Letters — Part 4100Sept. 17, 2019, 2:29 p.m.
Enigma Messages with Repeated Letters — Part 5100Sept. 17, 2019, 11:55 a.m.
Enigma Messages with Repeated Letters — Part 3100Sept. 17, 2019, 11:19 a.m.
Enigma Messages with Repeated Letters — Part 2100Sept. 17, 2019, 9:44 a.m.
¿No Hablas Español? No problemo!100Sept. 16, 2019, 4:29 p.m.
Nils away on travel100Sept. 16, 2019, 1:10 p.m.
Trifid Cipher100Sept. 15, 2019, 3:51 p.m.
Enigma Messages with Repeated Letters — Part 1100Sept. 15, 2019, 8:11 a.m.
Modified Caesar Cipher100Sept. 14, 2019, 4:26 p.m.
Letter from the Alleged Countess Julie von Ortenburg100Sept. 14, 2019, 12:21 p.m.
Reserve Hand Procedure — Part 1100Sept. 13, 2019, 3:52 p.m.
One-Time Pad with Flaws100Sept. 13, 2019, 2:10 p.m.
From Russia with Love100Sept. 13, 2019, 12:07 p.m.
How do you become a big cryptographer?100Sept. 12, 2019, 2:21 p.m.
Snow White and the seven dwarfs100Sept. 12, 2019, 10:18 a.m.
Grille Cipher100Sept. 12, 2019, 9:26 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100Sept. 12, 2019, 9:23 a.m.
A hidden word100Sept. 11, 2019, 2:10 p.m.
Beaver Code100Sept. 11, 2019, 2:08 p.m.
Caesar Encryption100Sept. 11, 2019, 12:13 p.m.
Original Caesar Cipher100Sept. 11, 2019, 11:26 a.m.
Kaskade-S/T — Part 21,086Sept. 10, 2019, 12:25 p.m.
Kaskade-S/T — Part 1100Sept. 7, 2019, 1:05 p.m.
Hilly — Part 11,120Sept. 4, 2019, 2:38 p.m.
Breaking a Filter Generator1,161Aug. 30, 2019, 12:17 p.m.
A Cloaked Substitution Cipher — Part 22,000Aug. 26, 2019, 12:30 p.m.
AES key — encoded in the machine readable zone of a European ePassport1,089Aug. 22, 2019, 3:11 p.m.
A Cloaked Substitution Cipher — Part 11,824Aug. 22, 2019, 12:59 p.m.
BCR code (Book-Caesar-RSA)1,091Aug. 18, 2019, 11:52 a.m.
ORYX Stream Cipher — Part 3 (revised)1,094Aug. 7, 2019, 12:50 p.m.
ORYX Stream Cipher Part II1,086Aug. 5, 2019, 4 p.m.
ORYX Stream Cipher Part I1,086Aug. 4, 2019, 3:58 p.m.
Fastest in the West1,152Aug. 1, 2019, 2:43 p.m.
CMEA 11,086July 19, 2019, 3:23 p.m.
M-138 — Part 31,103July 14, 2019, 2:56 p.m.
Pigpen with a twist — Part 1100July 12, 2019, 1:54 p.m.
Brute-Force-Attack on Triple-DES with Reduced Key Space1,086July 11, 2019, 2:23 p.m.
Hybrid Encryption I1,086July 10, 2019, 11:45 a.m.
M-138 — Part 21,103July 9, 2019, 2:14 p.m.
M-138 — Part 1100July 8, 2019, 4:18 p.m.
Cracking SHA1-Hashed Passwords1,087July 8, 2019, 1:47 p.m.
Letter to the Templars — Part 31,092July 7, 2019, 4:39 p.m.
Letter to the Templars — Part 2100July 7, 2019, 4:38 p.m.
Letter to the Templars — Part 1100July 7, 2019, 4:35 p.m.
Enigma Part 21,086July 5, 2019, 1:36 p.m.
Monoalphabetic Substitution100July 2, 2019, 1 p.m.
New Year's Greetings — Part 2100June 30, 2019, 12:31 p.m.
New Year's Greetings — Part 1100June 30, 2019, 11:47 a.m.
ADFGVX — Part 2100June 29, 2019, 4:55 p.m.
ADFGVX — Part 1100June 29, 2019, 3:13 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100June 24, 2019, 10:48 a.m.
The Einstein Enigma1,144June 22, 2019, 3:29 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,086June 21, 2019, 2:02 p.m.
Alice's Birthday Party (Part 2)1,086June 20, 2019, 4:22 p.m.
Alice's Birthday Party (Part 1)1,086June 20, 2019, 3:57 p.m.
Cryptanalysis Hacking Puzzles — Part 2101June 12, 2019, 1:31 p.m.
Cryptanalysis Hacking Puzzles — Part 1100June 12, 2019, 11:03 a.m.
Cascading Encryption — Part 1/3100June 7, 2019, 4:19 p.m.
Unusual encryption using a diophantine equation1,089June 1, 2019, 2:17 p.m.
Unconcealed RSA messages1,089May 27, 2019, 3:10 p.m.
Handycipher made in love — Part 11,233May 23, 2019, 2:09 p.m.
Handycipher made in love — Part 21,824May 23, 2019, 1:37 p.m.
Homophonic Encryption — Part 31,469May 19, 2019, 7:57 a.m.
Homophonic Encryption — Part 21,523May 16, 2019, 1:32 p.m.
Homophonic Encryption — Part 11,469May 15, 2019, 2:53 p.m.
Trendy Messenger1,161May 13, 2019, 11:02 a.m.
Summer Job1,161May 12, 2019, 1:21 p.m.
AES ECB Wrong Encoding1,143May 12, 2019, 6:23 a.m.
RSA: Two different keys — same ciphertext1,089May 10, 2019, 11:20 a.m.
A modified homophonic cipher with reduced alphabets — Part 2100May 8, 2019, 4:35 p.m.
A modified homophonic cipher with reduced alphabets — Part 1100May 8, 2019, 2:55 p.m.
Hill Cipher with Sudoku Key100May 8, 2019, 12:50 p.m.
Factorization Cipher — Part 31,090May 7, 2019, 3:56 p.m.
Factorization Cipher — Part 21,090May 5, 2019, 2:19 p.m.
Broadcasting and low exponent — RSA Attack1,089May 3, 2019, 3:02 p.m.
Classical Ciphers^3100May 2, 2019, 12:56 p.m.
Factorization Cipher — Part 1100April 24, 2019, 2:20 p.m.
Number Sequence — Part 8100April 24, 2019, 2:17 p.m.
Advent Challenge — Part 41,145April 21, 2019, 12:39 p.m.
Monoalphabetic substitution with camouflage — Part 31,090April 20, 2019, 9:14 p.m.
Advent Challenge — Part 31,145April 20, 2019, 9:09 p.m.
Advent-Challenge — Part 21,144April 20, 2019, 9:06 p.m.
Number Sequence — Part 4100April 20, 2019, 8:51 p.m.
Advent-Challenge — Part 1100April 12, 2019, 3:07 p.m.
Number Sequence — Part 3100April 12, 2019, 9:11 a.m.
Monoalphabetic substitution with camouflage — Part 21,090April 8, 2019, 12:52 p.m.
Monoalphabetic substitution with camouflage — Part 1100April 7, 2019, 4:41 p.m.
Number Sequence — Part 2100April 4, 2019, 1:21 p.m.
Number Sequence100April 4, 2019, 1:15 p.m.

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