Monoalphabetic substitution - Polybe

25 Points  0x0

Point, line, triangle...

Author

koma,  

Level  Difficulty

Validations

2122 Challengers 2%

Note  Notation

1
2
3
4
5
155 Votes

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 6 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
X-Junior   Monoalphabetic substitution - Polybe 12 August 2020 at 23:16
Adams Pierre   Substitution monoalphabétique - Polybe 11 August 2020 at 15:11
Tabarnhack   Substitution monoalphabétique - Polybe 7 August 2020 at 12:30
xThaz   Substitution monoalphabétique - Polybe 6 August 2020 at 16:59
dragonpatin   Substitution monoalphabétique - Polybe 4 August 2020 at 23:03
ExTi0p   Substitution monoalphabétique - Polybe 4 August 2020 at 02:37
alnk   Substitution monoalphabétique - Polybe 2 August 2020 at 10:52
raikovici27   Monoalphabetic substitution - Polybe 2 August 2020 at 10:36
superlutin   Substitution monoalphabétique - Polybe 1 August 2020 at 09:26
Nyu   Substitution monoalphabétique - Polybe 31 July 2020 at 10:23

 50 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 48313 5 Xartrick 10
pas_valide Encoding - UU 21% 37979 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 38498 5 g0uZ 6
pas_valide Hash - SHA-2 11% 19623 5 koma 4
pas_valide Shift cipher 7% 11959 10 m31z0nyx 8
pas_valide Pixel Madness 5% 9440 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 5160 15 Lu33Y 10
pas_valide File - PKZIP 4% 7099 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 9051 15 Arod 4
pas_valide Known plaintext - XOR 3% 5446 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 2076 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5746 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 6055 20 Arod 3
pas_valide System - Android lock pattern 3% 3916 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3684 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 595 25 Tie21 1
pas_valide AES - ECB 1% 1539 25 cez40 4
pas_valide LFSR - Known plaintext 1% 434 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2551 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 822 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1723 25 g0uZ, koma 4
pas_valide Monoalphabetic substitution - Polybe 2% 2122 25 koma 6
pas_valide Twisted secret 0% 0 25 nonstandardmodel 0
pas_valide Initialisation Vector 1% 1154 25 manticore, notfound404 5
pas_valide GEDEFU 1% 382 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 202 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 861 30 sambecks 1
pas_valide RSA - Common modulus 1% 895 30 franb 2
pas_valide Service - Hash length extension attack 1% 555 30 koma 1
pas_valide AES - 4 Rounds 1% 145 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 117 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% 614 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 137 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 67 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 769 40 franb 3
pas_valide AES - Fault attack #1 1% 79 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 141 50 peyman 2
pas_valide ECDHE 1% 141 60 Tosh 2
pas_valide RSA - Lee cooper 1% 57 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 774 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 284 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% 56 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 11 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 18 100 Tosh 0