Polyalphabetic substitution - One Time Pad

60 Points  0x0

A Perfect cipher only if…

Author

Thanat0s,  

Level  Difficulty

Validations

369 Challengers 1%

Note  Notation

128 Votes

To reach this part of the site please login

solutions  Solution


challenges 69 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide Encoding - ASCII 26% 82548 5 Xartrick 10 4 December 2012
pas_valide Encoding - UU 20% 63709 5 g0uZ 10 7 October 2006
pas_valide Hash - DCC 2% 5743 5 Podalirius 1 13 July 2021
pas_valide Hash - DCC2 2% 5447 5 Podalirius 1 13 July 2021
pas_valide Hash - LM 2% 5948 5 Podalirius 1 13 July 2021
pas_valide Hash - Message Digest 5 18% 57266 5 g0uZ 7 31 January 2010
pas_valide Hash - NT 2% 4676 5 Podalirius 1 13 July 2021
pas_valide Hash - SHA-2 10% 29991 5 koma 4 3 June 2012
pas_valide Shift cipher 6% 18706 10 m31z0nyx 10 16 February 2011
pas_valide CISCO - Salted Password 2% 3900 10 Tidusrose 3 13 July 2021
pas_valide Pixel Madness 5% 14667 15 Ryscrow 10 3 February 2011
pas_valide ELF64 - PID encryption 3% 7262 15 Lu33Y 10 8 February 2012
pas_valide File - PKZIP 4% 11632 15 g0uZ 6 30 August 2010
pas_valide Monoalphabetic substitution - Caesar 5% 14820 15 Arod 5 22 October 2011
pas_valide Circular Bit Shift 1% 510 20 BlackRaven 2 21 March 2023
pas_valide Known plaintext - XOR 3% 8210 20 Ryscrow 5 3 February 2011
pas_valide Code - Pseudo Random Number Generator 1% 3157 20 Tosh 6 19 December 2012
pas_valide Encoding - Codebook 1% 210 20 n3rada 1 21 March 2023
pas_valide File - Insecure storage 1 3% 8530 20 g0uZ 7 6 February 2012
pas_valide Polyalphabetic substitution - Vigenère 3% 9411 20 Arod 3 26 October 2011
pas_valide System - Android lock pattern 2% 6251 20 Silentd 5 23 December 2012
pas_valide Transposition - Rail Fence 2% 5816 20 YellowS4 4 6 April 2014
pas_valide AES - CBC - Bit-Flipping Attack 1% 1485 25 Tie21 4 17 June 2018
pas_valide AES - ECB 1% 2403 25 cez40 4 29 November 2015
pas_valide AES - ECB - Copy Paste 1% 94 25 Vozec 1 5 February 2024
pas_valide LFSR - Known plaintext 1% 889 25 Brissouille 2 28 November 2017
pas_valide RSA - Factorisation 2% 4381 25 HacKSpider 5 12 September 2010
pas_valide RSA - Decipher Oracle 1% 1784 25 Zweisamkeit 3 11 May 2017
pas_valide Service - Timing attack 1% 2647 25 g0uZ , koma 4 28 October 2012
pas_valide Monoalphabetic substitution - Polybe 2% 3572 25 koma 6 6 December 2011
pas_valide Twisted secret 1% 414 25 NonStandardModel 1 14 August 2020
pas_valide Initialisation Vector 1% 1977 25 manticore , notfound404 6 25 August 2015
pas_valide Hill Cipher 1% 134 30 LetMeR00t 0 21 March 2023
pas_valide GEDEFU 1% 544 30 makhno 1 13 September 2016
pas_valide OTP - Implementation error 1% 376 30 Podalirius 2 22 March 2021
pas_valide RSA - Corrupted key 1 1% 400 30 blackndoor 2 28 November 2017
pas_valide RSA - Continued fractions 1% 1325 30 sambecks 1 8 September 2015
pas_valide RSA - Common modulus 1% 1791 30 franb 3 24 December 2016
pas_valide Service - Hash length extension attack 1% 1087 30 koma 1 19 August 2015
pas_valide Shamir Secret Sharing - Introduction 1% 98 30 Vozec 1 5 February 2024
pas_valide AES - 4 Rounds 1% 309 35 Cryptanalyse 0 5 September 2018
pas_valide ECDSA - Introduction 1% 276 35 Jrmbt 2 22 September 2019
pas_valide RSA - Padding 1% 262 35 Tosh 0 9 October 2016
pas_valide RSA - Signature 1% 165 35 sar 1 9 March 2020
pas_valide Shamir Secret Sharing - Traitor 1% 9 35 Vozec 0 5 February 2024
pas_valide AES128 - CTR 1% 651 40 Tosh 2 28 August 2015
pas_valide PHP - mt_rand 1% 123 40 NonStandardModel 0 28 March 2022
pas_valide Discrete logarithm problem 1% 1142 40 RFC4949 3 8 June 2014
pas_valide RSA - Corrupted key 2 1% 290 40 blackndoor 1 11 January 2018
pas_valide RSA - Corrupted key 3 1% 169 40 blackndoor 0 5 September 2019
pas_valide RSA - Multiple recipients 1% 1458 40 franb 4 29 November 2015
pas_valide AES - Fault attack #1 1% 162 50 Cryptanalyse 1 20 September 2018
pas_valide FEAL - Differential Cryptanalysis 1% 34 50 Tosh 0 28 March 2022
pas_valide Enigma Machine 1% 240 50 peyman 2 12 October 2016
pas_valide Side Channel - AES : CPA 1% 61 50 cb34 0 28 March 2022
pas_valide ECDHE 1% 216 60 Tosh 2 20 November 2016
pas_valide RSA - H-rabin 1% 43 60 Vozec 0 21 March 2023
pas_valide RSA - Lee cooper 1% 135 60 blackndoor , Synacktiv 1 7 November 2019
pas_valide Service - CBC Padding 1% 1247 60 koma 1 4 October 2012
pas_valide Side Channel - AES : first round 1% 57 60 walafc0 0 28 March 2022
pas_valide Polyalphabetic substitution - One Time Pad 1% 369 60 Thanat0s 0 2 June 2013
pas_valide White-Box Cryptography 1% 207 60 Cryptanalyse 3 21 October 2018
pas_valide AES - Weaker variant 1% 123 70 Cryptanalyse 1 29 August 2018
pas_valide Shamir Secret Sharing - Reduction 1% 6 70 Vozec 0 5 February 2024
pas_valide Hash - SHA-3 1% 147 75 Revenger 1 10 December 2016
pas_valide AES - Fault attack #2 1% 119 80 Cryptanalyse 1 20 September 2018
pas_valide Shamir Secret Sharing - Irreducible ? 1% 2 90 Mister7F 0 5 February 2024
pas_valide AES-PMAC 1% 33 100 Cryptanalyse 0 26 May 2019
pas_valide ECDSA - Implementation error 1% 51 100 Tosh 0 29 September 2019