Account

Name
Eric
Username
ExAstris
Joined
May 14, 2018, 5:53 p.m.

Rank
33
Points
56,037
Trophies
Gold0
Silver0
Bronze0

Active Challenges (3)

LevelNameAttemptsDate
News from Castle Mansfeld9 / 15April 30, 2021, 6:40 a.m.
A hidden word4 / 15April 21, 2021, 5:46 p.m.
ADFGVX — Part 22 / 99May 30, 2018, 4:24 p.m.

Solved Challenges (121)

LevelNamePointsDate
Flawed Usage of a OTP Cipher by the BND1,096June 24, 2021, 2:19 a.m.
Hill Cipher with Sudoku Key100June 9, 2021, 10:34 p.m.
Lightweight Introduction to Lattices — Part 1100June 2, 2021, 12:31 a.m.
How do you become a big cryptographer?100May 30, 2021, 7:04 p.m.
Polyhomophonic Substitution — Part 31,151May 29, 2021, 7:54 p.m.
Cascading Encryption — Part 2/31,087May 28, 2021, 4:47 a.m.
The LoRa Cipher: Logic Randomness — Part 11,147May 26, 2021, 3:14 a.m.
Polyhomophonic Substitution — Part 21,151May 25, 2021, 5:04 a.m.
Polyphonic Substitution Cipher — Part 21,144May 24, 2021, 12:45 a.m.
Polyphonic Substitution Cipher — Part 11,140May 23, 2021, 11:37 p.m.
AES ECB Wrong Encoding1,111May 21, 2021, 1:31 a.m.
Homophonic Encryption — Part 41,129May 19, 2021, 3:49 a.m.
Homophonic Encryption — Part 21,129May 19, 2021, 2:48 a.m.
Homophonic Encryption — Part 11,128May 19, 2021, 2:37 a.m.
Homophonic Encryption — Part 31,129May 19, 2021, 2:13 a.m.
Enigma Messages with Repeated Letters — Part 5100May 19, 2021, 12:35 a.m.
Enigma Messages with Repeated Letters — Part 4100May 19, 2021, 12:03 a.m.
Enigma Messages with Repeated Letters — Part 2100May 18, 2021, 11:17 p.m.
Advent Challenge — Part 31,111May 18, 2021, 6:53 p.m.
Spanish Strip Cipher — Part 21,091May 18, 2021, 2:51 a.m.
Ku Klux Klan1,000May 17, 2021, 3:27 p.m.
Lightweight Introduction to Lattices — Part 31,166May 17, 2021, 3:53 a.m.
Find the right route — Part 3101May 15, 2021, 10:53 p.m.
Find the right route — Part 2101May 13, 2021, 5:33 a.m.
RSA Factoring Challenge: RSA-2300May 13, 2021, 3:23 a.m.
RSA Factoring Challenge: RSA-2200May 13, 2021, 3:22 a.m.
RSA Factoring Challenge: RSA-7040May 13, 2021, 3:20 a.m.
RSA Factoring Challenge: RSA-2100May 13, 2021, 3:18 a.m.
RSA Factoring Challenge: RSA-2500May 13, 2021, 3:15 a.m.
RSA Factoring Challenge: RSA-2320May 13, 2021, 3:11 a.m.
RSA Factoring Challenge: RSA-2400May 13, 2021, 3:07 a.m.
Polyhomophonic Substitution — Part 1100May 11, 2021, 5:26 a.m.
Weakened Granit — Part 1100May 10, 2021, 12:28 a.m.
Nils away on travel100May 9, 2021, 2:27 a.m.
Spanish Strip Cipher — Part 11,091May 8, 2021, 4:20 a.m.
Number Sequence — Part 10100May 7, 2021, 8:44 p.m.
Number Sequence — Part 9100May 7, 2021, 5:57 p.m.
Number Sequence — Part 6100May 7, 2021, 5:23 p.m.
Image Noise100May 7, 2021, 12:11 a.m.
A modified homophonic cipher with reduced alphabets — Part 2100May 6, 2021, 3:35 a.m.
A modified homophonic cipher with reduced alphabets — Part 1100May 6, 2021, 3:07 a.m.
Zodiac Cipher100May 5, 2021, 11:43 p.m.
Turing Bombe Enigma I100May 5, 2021, 7:39 p.m.
M-138 — Part 41,094May 5, 2021, 5:08 a.m.
Double Column Transposition — Part 41,091May 2, 2021, 5:59 a.m.
Enigma Part 21,082May 1, 2021, 7:40 p.m.
Find the right route — Part 1101April 30, 2021, 1:16 a.m.
Cryptanalysis Hacking Puzzles — Part 2100April 30, 2021, 12:04 a.m.
Pigpen with a twist — Part 21,084April 29, 2021, 11:42 p.m.
Factorization Cipher — Part 21,084April 22, 2021, 9:54 p.m.
Wheatstone Cryptograph — Part 1200April 22, 2021, 6:01 a.m.
Molehunt (Part 3/3)1,082April 22, 2021, 3:10 a.m.
Monoalphabetic Substitution with Nostradamus Flavor1,126April 21, 2021, 10:27 p.m.
Autokey Cipher100Oct. 26, 2019, 1:36 a.m.
Pigpen with a twist — Part 31,092July 7, 2018, 4:05 p.m.
A really long number sequence1,092June 27, 2018, 11:59 p.m.
Partial Key Exposure with RSA — Part 11,094June 27, 2018, 2:17 a.m.
Advent Challenge — Part 41,192June 24, 2018, 9:14 p.m.
Trendy Messenger1,469June 22, 2018, 4:47 p.m.
Summer Job1,485June 22, 2018, 4:38 a.m.
Fastest in the West1,485June 21, 2018, 6:56 p.m.
M-138 — Part 31,111June 19, 2018, 1:35 a.m.
Enigma Combinatorics100June 8, 2018, 5:18 p.m.
Enigma Messages with Repeated Letters — Part 1100June 7, 2018, 10:51 p.m.
Enigma Messages with Repeated Letters — Part 3100June 7, 2018, 1:33 a.m.
Enigma Messages100June 3, 2018, 2:31 a.m.
Strange Message from Thessaloniki100June 1, 2018, 2:23 a.m.
Recycled One-Time Pad100May 31, 2018, 1:41 a.m.
Letter from the Alleged Countess Julie von Ortenburg100May 30, 2018, 4:03 a.m.
Monoalphabetic substitution with camouflage — Part 1100May 30, 2018, 3:55 a.m.
Trifid Cipher100May 29, 2018, 5:55 p.m.
RSA: Two different keys — same ciphertext1,092May 29, 2018, 12:37 a.m.
A hidden word — Part 2100May 28, 2018, 10:37 p.m.
Post-Quantum Cryptography: Unbalanced Oil and Vinegar System — Part 1100May 28, 2018, 8:40 p.m.
Cascading Encryption — Part 1/3100May 28, 2018, 4:53 p.m.
The Einstein Enigma1,224May 28, 2018, 2:56 a.m.
ECDH-Key Exchange for Beginners100May 27, 2018, 10:10 p.m.
Kaskade-S/T — Part 1100May 26, 2018, 10:51 p.m.
Molehunt (Part 2/3)100May 26, 2018, 1:56 a.m.
The Last Note100May 26, 2018, 1:39 a.m.
Hybrid Encryption I1,089May 25, 2018, 3:13 a.m.
Reserve Hand Procedure — Part 1100May 25, 2018, 12:45 a.m.
Snow White and the seven dwarfs100May 24, 2018, 10:19 p.m.
M-138 — Part 21,111May 24, 2018, 2:20 a.m.
M-138 — Part 1100May 23, 2018, 4:41 a.m.
¿No Hablas Español? No problemo!100May 23, 2018, 4 a.m.
A Secret Message from Castle Mansfeld100May 23, 2018, 3:24 a.m.
The Book Code: A Challenge for Bookworms100May 23, 2018, 2:06 a.m.
Playfair with hints about the grid100May 22, 2018, 2:41 a.m.
Playfair Encryption100May 22, 2018, 2:33 a.m.
Pigpen with a twist — Part 1100May 21, 2018, 4:24 p.m.
Multilingual Monoalphabetic Substitution100May 20, 2018, 9:46 p.m.
Double Column Transposition — Part 31,106May 20, 2018, 5:26 p.m.
Molehunt (Part 1/3)100May 20, 2018, 5:11 a.m.
Double Columnar Transposition100May 19, 2018, 11:51 p.m.
Advent-Challenge — Part 1101May 19, 2018, 6:18 p.m.
Classical Ciphers^3100May 19, 2018, 5:02 p.m.
Modified Caesar Cipher100May 18, 2018, 8:52 p.m.
Not-so-Secret Message from Malawi — Part I (RSA)1,089May 17, 2018, 9:56 p.m.
ADFGVX — Part 1100May 17, 2018, 8:47 p.m.
Caesar Encryption100May 17, 2018, 7:40 p.m.
Broadcasting and low exponent — RSA Attack1,092May 17, 2018, 2:45 a.m.
Alice's Birthday Party (Part 2)1,089May 17, 2018, 2:15 a.m.
Alice's Birthday Party (Part 1)1,089May 17, 2018, 12:19 a.m.
One-Time Pad with Flaws100May 16, 2018, 3:48 p.m.
Number Sequence — Part 8100May 16, 2018, 3:08 a.m.
From Russia with Love100May 16, 2018, 3:01 a.m.
Affine Codes / Modulo Arithmetic with N / Extended Euclid100May 16, 2018, 1:52 a.m.
Grille Cipher100May 15, 2018, 11 p.m.
Factorization Cipher — Part 1100May 15, 2018, 10:24 p.m.
Monoalphabetic Substitution100May 15, 2018, 8:26 p.m.
Letter to the Templars — Part 31,097May 15, 2018, 2:04 a.m.
Letter to the Templars — Part 2100May 15, 2018, 1:22 a.m.
Cracking SHA1-Hashed Passwords1,091May 15, 2018, 12:55 a.m.
Letter to the Templars — Part 1100May 15, 2018, 12:52 a.m.
Number Sequence — Part 3100May 14, 2018, 9:22 p.m.
Number Sequence — Part 4100May 14, 2018, 9:18 p.m.
Beaver Code100May 14, 2018, 9:11 p.m.
Number Sequence — Part 2100May 14, 2018, 8:27 p.m.
Number Sequence100May 14, 2018, 8:20 p.m.
Original Caesar Cipher100May 14, 2018, 7:56 p.m.

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