Polyalphabetic substitution - Vigenère

20 Points  0x0

Basics

Author

Arod,  

Level  Difficulty

Validations

6603 Challengers 4%

Note  Notation

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270 Votes

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 3 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Anübi   Substitution polyalphabétique - Vigenère 24 February 2021 at 15:51
Pedro Miguel Pauleta   Substitution polyalphabétique - Vigenère 24 February 2021 at 11:54
deel   Substitution polyalphabétique - Vigenère 24 February 2021 at 02:06
flipy_2000   Substitution polyalphabétique - Vigenère 23 February 2021 at 20:41
marionlbc   Polyalphabetic substitution - Vigenère 23 February 2021 at 17:55
Gamma_120   Substitution polyalphabétique - Vigenère 22 February 2021 at 13:32
mezzo   Polyalphabetic substitution - Vigenère 22 February 2021 at 10:44
zkv666   Polyalphabetic substitution - Vigenère 22 February 2021 at 08:13
AdamW   Polyalphabetic substitution - Vigenère 21 February 2021 at 19:30
vessax   Polyalphabetic substitution - Vigenère 20 February 2021 at 18:33

 50 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 54038 5 Xartrick 10
pas_valide Encoding - UU 21% 42352 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 42678 5 g0uZ 6
pas_valide Hash - SHA-2 11% 21979 5 koma 4
pas_valide Shift cipher 7% 13412 10 m31z0nyx 9
pas_valide Pixel Madness 6% 10520 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 5594 15 Lu33Y 10
pas_valide File - PKZIP 4% 7896 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 9966 15 Arod 4
pas_valide Known plaintext - XOR 3% 5960 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 2319 20 Tosh 5
pas_valide File - Insecure storage 1 3% 6221 20 g0uZ 6
pas_valide Polyalphabetic substitution - Vigenère 4% 6603 20 Arod 3
pas_valide System - Android lock pattern 3% 4357 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 4032 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 753 25 Tie21 2
pas_valide AES - ECB 1% 1677 25 cez40 4
pas_valide LFSR - Known plaintext 1% 510 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2821 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 962 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1860 25 g0uZ, koma 4
pas_valide Monoalphabetic substitution - Polybe 2% 2348 25 koma 6
pas_valide Twisted secret 1% 132 25 NonStandardModel 1
pas_valide Initialisation Vector 1% 1278 25 manticore, notfound404 5
pas_valide GEDEFU 1% 416 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 240 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 951 30 sambecks 1
pas_valide RSA - Common modulus 1% 1024 30 franb 2
pas_valide Service - Hash length extension attack 1% 644 30 koma 1
pas_valide AES - 4 Rounds 1% 169 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 141 35 Jrmbt 2
pas_valide RSA - Padding 1% 184 35 Tosh 0
pas_valide RSA - Signature 1% 74 35 s4r 1
pas_valide AES128 - CTR 1% 477 40 Tosh 2
pas_valide Discrete logarithm problem 1% 702 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 160 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 80 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 851 40 franb 3
pas_valide AES - Fault attack #1 1% 91 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 157 50 peyman 2
pas_valide ECDHE 1% 153 60 Tosh 2
pas_valide RSA - Lee cooper 1% 74 60 blackndoor, Synacktiv 1
pas_valide Service - CBC Padding 1% 833 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 306 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 117 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 76 70 Cryptanalyse 1
pas_valide Hash - SHA-3 1% 86 75 Revenger 1
pas_valide AES - Fault attack #2 1% 67 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 12 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 22 100 Tosh 0