Polyalphabetic substitution - Vigenère

20 Points  0x0

Basics

Author

Arod,  

Level  Difficulty

Validations

5310 Challengers 4%

Note  Notation

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5
227 Votes

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 3 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Aerios   Substitution polyalphabétique - Vigenère 22 January 2020 at 14:24
Marvill   Substitution polyalphabétique - Vigenère 22 January 2020 at 13:08
Moustrash   Substitution polyalphabétique - Vigenère 22 January 2020 at 12:58
Alex   Polyalphabetic substitution - Vigenère 21 January 2020 at 22:59
EtC   Substitution polyalphabétique - Vigenère 21 January 2020 at 15:52
Loki   Substitution polyalphabétique - Vigenère 21 January 2020 at 13:51
Nino   Substitution polyalphabétique - Vigenère 21 January 2020 at 12:09
Delville   Substitution polyalphabétique - Vigenère 21 January 2020 at 09:11
Cl0udSY   Substitution polyalphabétique - Vigenère 21 January 2020 at 00:49
renard31   Substitution polyalphabétique - Vigenère 20 January 2020 at 17:21

 48 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 42360 5 Xartrick 10
pas_valide Encoding - UU 21% 33471 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 34133 5 g0uZ 6
pas_valide Hash - SHA-2 11% 17200 5 koma 4
pas_valide Shift cipher 7% 10308 10 m31z0nyx 6
pas_valide Pixel Madness 5% 8250 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 4644 15 Lu33Y 10
pas_valide File - PKZIP 4% 6141 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 7840 15 Arod 4
pas_valide Known plaintext - XOR 3% 4865 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 1829 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5243 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 5310 20 Arod 3
pas_valide System - Android lock pattern 3% 3426 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3245 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 413 25 Tie21 1
pas_valide AES - ECB 1% 1364 25 cez40 4
pas_valide LFSR - Known plaintext 1% 314 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2240 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 639 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1550 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1845 25 koma 6
pas_valide Initialisation Vector 1% 1005 25 manticore, notfound404 5
pas_valide GEDEFU 1% 322 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 155 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 762 30 sambecks 1
pas_valide RSA - Common modulus 1% 747 30 franb 2
pas_valide Service - Hash length extension attack 1% 467 30 koma 1
pas_valide AES - 4 Rounds 1% 117 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 78 35 Jrmbt 0
pas_valide RSA - Padding 1% 141 35 Tosh 0
pas_valide AES128 - CTR 1% 406 40 Tosh 1
pas_valide Discrete logarithm problem 1% 557 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 109 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 50 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 664 40 franb 3
pas_valide AES - Fault attack #1 1% 61 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 112 50 peyman 1
pas_valide ECDHE 1% 123 60 Tosh 2
pas_valide RSA - Lee cooper 1% 34 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 687 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 267 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 90 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 37 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 61 75 Revenger 1
pas_valide AES - Fault attack #2 1% 42 80 Cryptanalyse 0
pas_valide AES-PMAC 1% 9 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 14 100 Tosh 0