Polyalphabetic substitution - One Time Pad

60 Points  0x0

A Perfect cipher only if…

Author

Thanat0s,  

Level  Difficulty

Validations

352 Challengers 1%

Note  Notation

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5
117 Votes

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Challenge Results Challenge Results

Pseudo Challenge Lang Date
0nift3r Cryptanalysis  Polyalphabetic substitution - One Time Pad en 29 January 2023 at 16:59
HyouKa Cryptanalysis  Polyalphabetic substitution - One Time Pad en 29 December 2022 at 22:36
Vozec Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 18 December 2022 at 14:23
unknown_error Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 5 December 2022 at 21:23
alfred Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 27 November 2022 at 17:20
face0xff Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 6 November 2022 at 20:08
so3 Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 23 October 2022 at 02:33
AziXus Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 23 October 2022 at 01:57
csg Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 21 October 2022 at 00:36
Re:Z3R0 Cryptanalyse  Substitution polyalphabétique - Masque jetable fr 13 August 2022 at 16:41

challenges 60 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide Encoding - ASCII 26% 72810 5 Xartrick 10 4 December 2012
pas_valide Encoding - UU 21% 56399 5 g0uZ 10 7 October 2006
pas_valide Hash - DCC 2% 3291 5 Podalirius 1 13 July 2021
pas_valide Hash - DCC2 2% 3238 5 Podalirius 1 13 July 2021
pas_valide Hash - LM 2% 3781 5 Podalirius 1 13 July 2021
pas_valide Hash - Message Digest 5 19% 52294 5 g0uZ 7 31 January 2010
pas_valide Hash - NT 1% 2784 5 Podalirius 1 13 July 2021
pas_valide Hash - SHA-2 10% 27082 5 koma 4 3 June 2012
pas_valide Shift cipher 6% 16825 10 m31z0nyx 10 16 February 2011
pas_valide CISCO - Salted Password 1% 2480 10 Tidusrose 3 13 July 2021
pas_valide Pixel Madness 5% 13198 15 Ryscrow 10 3 February 2011
pas_valide ELF64 - PID encryption 3% 6608 15 Lu33Y 10 8 February 2012
pas_valide File - PKZIP 4% 10184 15 g0uZ 6 30 August 2010
pas_valide Monoalphabetic substitution - Caesar 5% 13031 15 Arod 5 22 October 2011
pas_valide Known plaintext - XOR 3% 7426 20 Ryscrow 5 3 February 2011
pas_valide Code - Pseudo Random Number Generator 2% 2889 20 Tosh 6 19 December 2012
pas_valide File - Insecure storage 1 3% 7682 20 g0uZ 7 6 February 2012
pas_valide Polyalphabetic substitution - Vigenère 4% 8508 20 Arod 3 26 October 2011
pas_valide System - Android lock pattern 2% 5629 20 Silentd 5 23 December 2012
pas_valide Transposition - Rail Fence 2% 5270 20 YellowS4 4 6 April 2014
pas_valide AES - CBC - Bit-Flipping Attack 1% 1210 25 Tie21 4 17 June 2018
pas_valide AES - ECB 1% 2106 25 cez40 4 29 November 2015
pas_valide LFSR - Known plaintext 1% 770 25 Brissouille 2 28 November 2017
pas_valide RSA - Factorisation 2% 3811 25 HacKSpider 5 12 September 2010
pas_valide RSA - Decipher Oracle 1% 1481 25 Zweisamkeit 3 11 May 2017
pas_valide Service - Timing attack 1% 2360 25 g0uZ 4 28 October 2012
pas_valide Monoalphabetic substitution - Polybe 2% 3122 25 koma 6 6 December 2011
pas_valide Twisted secret 1% 319 25 NonStandardModel 1 14 August 2020
pas_valide Initialisation Vector 1% 1696 25 manticore 6 25 August 2015
pas_valide GEDEFU 1% 504 30 makhno 1 13 September 2016
pas_valide OTP - Implementation error 1% 269 30 Podalirius 2 22 March 2021
pas_valide RSA - Corrupted key 1 1% 338 30 blackndoor 2 28 November 2017
pas_valide RSA - Continued fractions 1% 1188 30 sambecks 1 8 September 2015
pas_valide RSA - Common modulus 1% 1480 30 franb 3 24 December 2016
pas_valide Service - Hash length extension attack 1% 888 30 koma 1 19 August 2015
pas_valide AES - 4 Rounds 1% 251 35 Cryptanalyse 0 5 September 2018
pas_valide ECDSA - Introduction 1% 232 35 Jrmbt 2 22 September 2019
pas_valide RSA - Padding 1% 228 35 Tosh 0 9 October 2016
pas_valide RSA - Signature 1% 127 35 sar 1 9 March 2020
pas_valide AES128 - CTR 1% 586 40 Tosh 2 28 August 2015
pas_valide PHP - mt_rand 1% 87 40 NonStandardModel 0 28 March 2022
pas_valide Discrete logarithm problem 1% 940 40 RFC4949 3 8 June 2014
pas_valide RSA - Corrupted key 2 1% 229 40 blackndoor 1 11 January 2018
pas_valide RSA - Corrupted key 3 1% 120 40 blackndoor 0 5 September 2019
pas_valide RSA - Multiple recipients 1% 1191 40 franb 4 29 November 2015
pas_valide AES - Fault attack #1 1% 133 50 Cryptanalyse 1 20 September 2018
pas_valide FEAL - Differential Cryptanalysis 1% 17 50 Tosh 0 28 March 2022
pas_valide Enigma Machine 1% 220 50 peyman 2 12 October 2016
pas_valide Side Channel - AES : CPA 1% 31 50 cb34 0 28 March 2022
pas_valide ECDHE 1% 198 60 Tosh 2 20 November 2016
pas_valide RSA - Lee cooper 1% 108 60 blackndoor 1 7 November 2019
pas_valide Service - CBC Padding 1% 1051 60 koma 1 4 October 2012
pas_valide Side Channel - AES : first round 1% 29 60 walafc0 0 28 March 2022
pas_valide Polyalphabetic substitution - One Time Pad 1% 352 60 Thanat0s 0 2 June 2013
pas_valide White-Box Cryptography 1% 178 60 Cryptanalyse 3 21 October 2018
pas_valide AES - Weaker variant 1% 109 70 Cryptanalyse 1 29 August 2018
pas_valide Hash - SHA-3 1% 138 75 Revenger 1 10 December 2016
pas_valide AES - Fault attack #2 1% 97 80 Cryptanalyse 1 20 September 2018
pas_valide AES-PMAC 1% 27 100 Cryptanalyse 0 26 May 2019
pas_valide ECDSA - Implementation error 1% 47 100 Tosh 0 29 September 2019