Polyalphabetic substitution - Vigenère

20 Points  0x0

Basics

Author

Arod,  

Level  Difficulty

Validations

6038 Challengers 4%

Note  Notation

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255 Votes

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 3 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Reicros   Substitution polyalphabétique - Vigenère 7 August 2020 at 16:50
skodsh   Substitution polyalphabétique - Vigenère 6 August 2020 at 23:18
sheykz777   Substitution polyalphabétique - Vigenère 6 August 2020 at 21:23
CharlotteH   Polyalphabetic substitution - Vigenère 6 August 2020 at 16:08
thomasyoung   Polyalphabetic substitution - Vigenère 6 August 2020 at 04:47
xThaz   Substitution polyalphabétique - Vigenère 5 August 2020 at 22:35
Master123   Polyalphabetic substitution - Vigenère 5 August 2020 at 11:58
rbtw   Polyalphabetic substitution - Vigenère 4 August 2020 at 09:44
appcheqqa   Polyalphabetic substitution - Vigenère 3 August 2020 at 16:43
GL4dI4T0R   Substitution polyalphabétique - Vigenère 2 August 2020 at 20:58

 49 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 48166 5 Xartrick 10
pas_valide Encoding - UU 21% 37874 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 38403 5 g0uZ 6
pas_valide Hash - SHA-2 11% 19562 5 koma 4
pas_valide Shift cipher 7% 11926 10 m31z0nyx 8
pas_valide Pixel Madness 5% 9407 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 5147 15 Lu33Y 10
pas_valide File - PKZIP 4% 7077 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 9027 15 Arod 4
pas_valide Known plaintext - XOR 3% 5425 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 2068 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5730 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 6035 20 Arod 3
pas_valide System - Android lock pattern 3% 3899 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3671 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 587 25 Tie21 1
pas_valide AES - ECB 1% 1531 25 cez40 4
pas_valide LFSR - Known plaintext 1% 432 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2542 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 819 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1720 25 g0uZ, koma 4
pas_valide Monoalphabetic substitution - Polybe 2% 2118 25 koma 6
pas_valide Initialisation Vector 1% 1151 25 manticore, notfound404 5
pas_valide GEDEFU 1% 381 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 199 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 859 30 sambecks 1
pas_valide RSA - Common modulus 1% 893 30 franb 2
pas_valide Service - Hash length extension attack 1% 554 30 koma 1
pas_valide AES - 4 Rounds 1% 145 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 116 35 Jrmbt 1
pas_valide RSA - Padding 1% 160 35 Tosh 0
pas_valide RSA - Signature 1% 56 35 s4r 1
pas_valide AES128 - CTR 1% 449 40 Tosh 1
pas_valide Discrete logarithm problem 1% 613 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 135 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 67 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 766 40 franb 3
pas_valide AES - Fault attack #1 1% 78 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 141 50 peyman 2
pas_valide ECDHE 1% 139 60 Tosh 2
pas_valide RSA - Lee cooper 1% 57 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 770 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 283 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 102 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 47 70 Cryptanalyse 1
pas_valide Hash - SHA-3 1% 79 75 Revenger 1
pas_valide AES - Fault attack #2 1% 53 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 11 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 18 100 Tosh 0