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File - PKZIP 2

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20 Points  0x0

PKZIP encryption is weak

Author

kevin.mille,  

Level  Difficulty

Validations

263 Challengers 1%

Note  Notation

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43 Votes

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solutions 2 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang Date
Aqua Cryptanalyse  Fichier - PKZIP 2 fr 25 April 2025 at 14:06
AlKodi Cryptanalyse  Fichier - PKZIP 2 fr 22 April 2025 at 03:05
chepycou Cryptanalysis  File - PKZIP 2 en 21 April 2025 at 18:57
Artifowl Cryptanalyse  Fichier - PKZIP 2 fr 21 April 2025 at 12:08
snow_raph Cryptanalyse  Fichier - PKZIP 2 fr 20 April 2025 at 15:04
FatMat Cryptanalyse  Fichier - PKZIP 2 fr 19 April 2025 at 18:25
cryptoverflow Cryptanalyse  Fichier - PKZIP 2 fr 19 April 2025 at 10:03
Hamza Cryptanalysis  File - PKZIP 2 en 18 April 2025 at 21:47
Niout Cryptanalyse  Fichier - PKZIP 2 fr 18 April 2025 at 18:00
Fantabc Cryptanalyse  Fichier - PKZIP 2 fr 16 April 2025 at 21:57

challenges 75 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide Encoding - ASCII 26% 91434 5 Xartrick 10 4 December 2012
pas_valide Encoding - UU 20% 70460 5 g0uZ 10 7 October 2006
pas_valide Hash - DCC 3% 8417 5 Podalirius 1 13 July 2021
pas_valide Hash - DCC2 3% 7759 5 Podalirius 1 13 July 2021
pas_valide Hash - LM 3% 8232 5 Podalirius 1 13 July 2021
pas_valide Hash - Message Digest 5 18% 61703 5 g0uZ 7 31 January 2010
pas_valide Hash - NT 2% 6654 5 Podalirius 1 13 July 2021
pas_valide Hash - SHA-2 10% 32530 5 koma 4 3 June 2012
pas_valide Shift cipher 6% 20769 10 m31z0nyx 10 16 February 2011
pas_valide CISCO - Salted Password 2% 5379 10 Tidusrose 3 13 July 2021
pas_valide Pixel Madness 5% 16175 15 Ryscrow 10 3 February 2011
pas_valide ELF64 - PID encryption 3% 8046 15 Lu33Y 10 8 February 2012
pas_valide File - PKZIP 4% 13189 15 g0uZ 6 30 August 2010
pas_valide Monoalphabetic substitution - Caesar 5% 16723 15 Arod 5 22 October 2011
pas_valide Circular Bit Shift 1% 1559 20 BlackRaven 3 21 March 2023
pas_valide Known plaintext - XOR 3% 9259 20 Ryscrow 5 3 February 2011
pas_valide Code - Pseudo Random Number Generator 1% 3594 20 Tosh 6 19 December 2012
pas_valide Encoding - Codebook 1% 392 20 n3rada 1 21 March 2023
pas_valide File - PKZIP 2 1% 267 20 kevin.mille 2 8 November 2024
pas_valide File - Insecure storage 1 3% 9310 20 g0uZ 7 6 February 2012
pas_valide Polyalphabetic substitution - Vigenère 3% 10490 20 Arod 3 26 October 2011
pas_valide System - Android lock pattern 2% 6927 20 Silentd 5 23 December 2012
pas_valide Transposition - Rail Fence 2% 6484 20 YellowS4 4 6 April 2014
pas_valide AES - CBC - Bit-Flipping Attack 1% 1655 25 Tie21 5 17 June 2018
pas_valide AES - ECB 1% 2690 25 cez40 4 29 November 2015
pas_valide AES - ECB - Copy Paste 1% 311 25 Vozec 1 5 February 2024
pas_valide DSA - Implementation error 1% 18 25 Vozec 0 13 December 2024
pas_valide LFSR - Known plaintext 1% 1039 25 Brissouille 2 28 November 2017
pas_valide RSA - Factorisation 2% 5005 25 HacKSpider 5 12 September 2010
pas_valide RSA - Decipher Oracle 1% 2020 25 Zweisamkeit 4 11 May 2017
pas_valide Service - Timing attack 1% 2888 25 g0uZ , koma 5 28 October 2012
pas_valide Monoalphabetic substitution - Polybe 2% 3923 25 koma 6 6 December 2011
pas_valide Twisted secret 1% 494 25 NonStandardModel 1 14 August 2020
pas_valide Initialisation Vector 1% 2231 25 manticore , notfound404 6 25 August 2015
pas_valide Hill Cipher 1% 208 30 LetMeR00t 1 21 March 2023
pas_valide GEDEFU 1% 570 30 makhno 1 13 September 2016
pas_valide OTP - Implementation error 1% 460 30 Podalirius 3 22 March 2021
pas_valide RSA - Corrupted key 1 1% 441 30 blackndoor 2 28 November 2017
pas_valide RSA - Continued fractions 1% 1471 30 sambecks 1 8 September 2015
pas_valide RSA - Common modulus 1% 2015 30 franb 3 24 December 2016
pas_valide Service - Hash length extension attack 1% 1176 30 koma 1 19 August 2015
pas_valide Shamir Secret Sharing - Introduction 1% 324 30 Vozec 1 5 February 2024
pas_valide AES - 4 Rounds 1% 352 35 Cryptanalyse 0 5 September 2018
pas_valide ECDSA - Introduction 1% 325 35 Jrmbt 2 22 September 2019
pas_valide ElGamal - Fault attack (Introduction) 1% 11 35 Vozec 0 13 December 2024
pas_valide RSA - Padding 1% 289 35 Tosh 0 9 October 2016
pas_valide RSA - Signature 1% 193 35 sar 1 9 March 2020
pas_valide Shamir Secret Sharing - Traitor 1% 88 35 Vozec 1 5 February 2024
pas_valide AES128 - CTR 1% 711 40 Tosh 2 28 August 2015
pas_valide PHP - mt_rand 1% 158 40 NonStandardModel 0 28 March 2022
pas_valide Discrete logarithm problem 1% 1288 40 RFC4949 3 8 June 2014
pas_valide RSA - Corrupted key 2 1% 320 40 blackndoor 1 11 January 2018
pas_valide RSA - Corrupted key 3 1% 186 40 blackndoor 0 5 September 2019
pas_valide RSA - Multiple recipients 1% 1622 40 franb 4 29 November 2015
pas_valide AES - Fault attack #1 1% 191 50 Cryptanalyse 1 20 September 2018
pas_valide FEAL - Differential Cryptanalysis 1% 46 50 Tosh 0 28 March 2022
pas_valide Goldreich Goldwasser Halevi | Weak Parameter 1% 7 50 Vozec 0 13 December 2024
pas_valide Enigma Machine 1% 260 50 peyman 2 12 October 2016
pas_valide Side Channel - AES : CPA 1% 81 50 cb34 0 28 March 2022
pas_valide ECDHE 1% 243 60 Tosh 2 20 November 2016
pas_valide NTRU | Multiple Transmission 1% 15 60 Vozec 0 13 December 2024
pas_valide NTRU | Weak Parameter 1% 6 60 Vozec 0 13 December 2024
pas_valide RSA - H-rabin 1% 85 60 Vozec 0 21 March 2023
pas_valide RSA - Lee cooper 1% 163 60 blackndoor , Synacktiv 1 7 November 2019
pas_valide Service - CBC Padding 1% 1354 60 koma 2 4 October 2012
pas_valide Side Channel - AES : first round 1% 82 60 walafc0 0 28 March 2022
pas_valide Polyalphabetic substitution - One Time Pad 1% 379 60 Thanat0s 0 2 June 2013
pas_valide White-Box Cryptography 1% 243 60 Cryptanalyse 3 21 October 2018
pas_valide AES - Weaker variant 1% 142 70 Cryptanalyse 1 29 August 2018
pas_valide Shamir Secret Sharing - Reduction 1% 47 70 Vozec 0 5 February 2024
pas_valide Hash - SHA-3 1% 160 75 Revenger 1 10 December 2016
pas_valide AES - Fault attack #2 1% 134 80 Cryptanalyse 1 20 September 2018
pas_valide Shamir Secret Sharing - Irreducible ? 1% 30 90 Mister7F 0 5 February 2024
pas_valide AES-PMAC 1% 38 100 Cryptanalyse 0 26 May 2019
pas_valide ECDSA - Implementation error 1% 65 100 Tosh 0 29 September 2019