Polyalphabetic substitution - Vigenère

20 Points  

Basics

Author

Arod,  

Level  Difficulty

Validations

3820 Challengers 4%

Note  Notation

1
2
3
4
5
173 Votes
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Solution 3 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
VENOM666   Polyalphabetic substitution - Vigenère en 16 November 2018 at 18:18
W00t   Polyalphabetic substitution - Vigenère en 16 November 2018 at 12:17
edran   Substitution polyalphabétique - Vigenère fr 16 November 2018 at 10:18
ROPSEC   Substitution polyalphabétique - Vigenère fr 15 November 2018 at 16:57
cykablyat   Substitution polyalphabétique - Vigenère fr 15 November 2018 at 11:22
Shawn   Substitution polyalphabétique - Vigenère fr 14 November 2018 at 22:10
DT203   Polyalphabetic substitution - Vigenère en 14 November 2018 at 19:47
reedphish   Polyalphabetic substitution - Vigenère en 14 November 2018 at 17:48
aquin   Polyalphabetic substitution - Vigenère en 14 November 2018 at 15:34
tony059   Substitution polyalphabétique - Vigenère fr 14 November 2018 at 13:31

Challenges associated with this section 43 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 28% 28035 5 Xartrick 10
pas_valide Encoding - UU 22% 22467 5 g0uZ 10
pas_valide Hash - Message Digest 5 23% 23200 5 g0uZ 6
pas_valide Hash - SHA-2 12% 11818 5 koma 3
pas_valide Shift cipher 7% 6933 10 m31z0nyx 5
pas_valide Pixel Madness 6% 5663 15 Ryscrow 10
pas_valide ELF64 - PID encryption 4% 3475 15 Lu33Y 10
pas_valide File - PKZIP 5% 4196 15 g0uZ 5
pas_valide Monoalphabetic substitution - Caesar 6% 5574 15 Arod 4
pas_valide Known plaintext - XOR 4% 3523 20 Ryscrow 4
pas_valide Code - Pseudo Random Number Generator 2% 1326 20 Tosh 4
pas_valide File - Insecure storage 1 5% 4208 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 3820 20 Arod 3
pas_valide System - Android lock pattern 3% 2424 20 Silentd 3
pas_valide Transposition - Rail Fence 3% 2269 20 YellowS4 2
pas_valide AES - CBC - Bit-Flipping Attack 1% 114 25 Tie21 1
pas_valide AES - ECB 1% 981 25 cez40 4
pas_valide LFSR - Known plaintext 1% 133 25 Brissouille 1
pas_valide RSA - Factorisation 2% 1555 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 353 25 Zweisamkeit 3
pas_valide Service - Timing attack 2% 1213 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1350 25 koma 6
pas_valide Initialisation Vector 1% 691 25 notfound, manticore 3
pas_valide GEDEFU 1% 220 30 makhno 1
pas_valide RSA - Corrupted key V1 1% 78 30 blackndoor 1
pas_valide RSA - Continued fractions 1% 549 30 sambecks 1
pas_valide RSA - Common modulus 1% 444 30 franb 2
pas_valide Service - Hash length extension attack 1% 328 30 koma 1
pas_valide AES - 4 Rounds 1% 42 35 Cryptanalyse 0
pas_valide RSA - Padding 1% 100 35 Tosh 0
pas_valide AES128 - CTR 1% 315 40 Tosh 1
pas_valide Discrete logarithm problem 1% 416 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key V2 1% 58 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 451 40 franb 3
pas_valide AES - Fault attack #1 1% 19 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 76 50 peyman 0
pas_valide ECDHE 1% 81 60 Tosh 2
pas_valide Service - CBC Padding 1% 505 60 koma 0
pas_valide Polyalphabetic substitution - One Time Pad 1% 223 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 35 60 Cryptanalyse 1
pas_valide AES - Weaker variant 1% 15 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 40 75 Revenger 1
pas_valide AES - Fault attack #2 1% 13 80 Cryptanalyse 0