Service - Hash length extension attack

30 Punkte  0x0

H(Schlüssel ∥ Nachricht)

Autor

koma,  

Stufe  Schwierigkeitsgrad

Validierung

1309 Herausforderer 1%

Bewertung  Bewertung

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78 votes

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solutions 1 Musterlösung

Musterlösungen anschauen Eine Musterlösung vorschlagen

Ergebnisse der Übungen Ergebnisse der Übungen

Nickname Übungen Sprache date
flup Cryptanalyse  Service - Hash length extension attack fr 18. Juli 2026 zu  16:23
taylorsimon01 Cryptanalyse  Service - Hash length extension attack fr 18. Juli 2026 zu  06:29
Gedeon JEDIDJA KINGOUARI Cryptanalyse  Service - Hash length extension attack fr 16. Juli 2026 zu  10:25
OuahLePleutre Cryptanalyse  Service - Hash length extension attack fr 11. Juli 2026 zu  15:02
alienx Cryptanalyse  Service - Hash length extension attack fr 7. Juli 2026 zu  15:20
schizotypique Cryptanalyse  Service - Hash length extension attack fr 6. Juli 2026 zu  15:28
Apto Cryptanalyse  Service - Hash length extension attack fr 2. Juli 2026 zu  18:50
long Cryptanalysis  Service - Hash length extension attack en 30. Juni 2026 zu  07:27
Hideoh Cryptanalyse  Service - Hash length extension attack fr 22. Juni 2026 zu  22:46
Jinx Cryptanalysis  Service - Hash length extension attack en 21. Juni 2026 zu  14:59

challenges 75 Premium Übungen

Ergebnis Name Validierung Anzahl der Punkte  Erklärung der Punktevergabe Schwierigkeitsgrad  Schwierigkeitsgrad Autor Bewertung  Bewertung Musterlösung date
pas_valide Encoding - ASCII 25% 99252 5 Xartrick 2 4. Dezember 2012
pas_valide Encoding - UU 20% 75981 5 g0uZ 1 7. Oktober 2006
pas_valide Hash - DCC 3% 10618 5 Podalirius 0 13. Juli 2021
pas_valide Hash - DCC2 3% 9671 5 Podalirius 0 13. Juli 2021
pas_valide Hash - LM 3% 10060 5 Podalirius 0 13. Juli 2021
pas_valide Hash - Message Digest 5 17% 65240 5 g0uZ 1 31. Januar 2010
pas_valide Hash - NT 3% 8242 5 Podalirius 0 13. Juli 2021
pas_valide Hash - SHA-2 9% 34621 5 koma 1 3. Juni 2012
pas_valide Shift cipher 6% 22686 10 m31z0nyx 1 16. Februar 2011
pas_valide CISCO - Salted Password 2% 6697 10 Tidusrose 1 13. Juli 2021
pas_valide Pixel Madness 5% 17450 15 Ryscrow 2 3. Februar 2011
pas_valide ELF64 - PID encryption 3% 8701 15 Lu33Y 2 8. Februar 2012
pas_valide File - PKZIP 4% 14451 15 g0uZ 0 30. August 2010
pas_valide Monoalphabetic substitution - Caesar 5% 18443 15 Arod 0 22. Oktober 2011
pas_valide Circular Bit Shift 1% 2385 20 BlackRaven 0 21. März 2023
pas_valide Known plaintext - XOR 3% 10237 20 Ryscrow 0 3. Februar 2011
pas_valide Code - Pseudo Random Number Generator 2% 4180 20 Tosh 0 19. Dezember 2012
pas_valide Encoding - Codebook 1% 693 20 n3rada 0 21. März 2023
pas_valide File - PKZIP 2 1% 668 20 kevin.mille 0 8. November 2024
pas_valide File - Insecure storage 1 3% 9916 20 g0uZ 0 6. Februar 2012
pas_valide Polyalphabetic substitution - Vigenère 3% 11288 20 Arod 0 26. Oktober 2011
pas_valide System - Android lock pattern 2% 7451 20 Silentd 0 23. Dezember 2012
pas_valide Transposition - Rail Fence 2% 7062 20 YellowS4 0 6. April 2014
pas_valide AES - CBC - Bit-Flipping Attack 1% 1843 25 Tie21 0 17. Juni 2018
pas_valide AES - ECB 1% 3029 25 cez40 0 29. November 2015
pas_valide AES - ECB - Copy Paste 1% 522 25 Vozec 0 5. Februar 2024
pas_valide DSA - Implementation error 1% 255 25 Vozec 0 13. Dezember 2024
pas_valide LFSR - Known plaintext 1% 1321 25 Brissouille 0 28. November 2017
pas_valide RSA - Factorisation 2% 5620 25 HacKSpider 0 12. September 2010
pas_valide RSA - Decipher Oracle 1% 2317 25 Zweisamkeit 0 11. Mai 2017
pas_valide Service - Timing attack 1% 3109 25 g0uZ , koma 1 28. Oktober 2012
pas_valide Monoalphabetic substitution - Polybe 2% 4238 25 koma 0 6. Dezember 2011
pas_valide Twisted secret 1% 677 25 NonStandardModel 0 14. August 2020
pas_valide Initialisation Vector 1% 2504 25 manticore , notfound404 0 25. August 2015
pas_valide Hill Cipher 1% 416 30 LetMeR00t 0 21. März 2023
pas_valide GEDEFU 1% 664 30 makhno 0 13. September 2016
pas_valide OTP - Implementation error 1% 636 30 Podalirius 0 22. März 2021
pas_valide RSA - Corrupted key 1 1% 572 30 blackndoor 0 28. November 2017
pas_valide RSA - Continued fractions 1% 1726 30 sambecks 0 8. September 2015
pas_valide RSA - Common modulus 1% 2302 30 franb 0 24. Dezember 2016
pas_valide Service - Hash length extension attack 1% 1309 30 koma 1 19. August 2015
pas_valide Shamir Secret Sharing - Introduction 1% 524 30 Vozec 0 5. Februar 2024
pas_valide AES - 4 Rounds 1% 462 35 Cryptanalyse 0 5. September 2018
pas_valide ECDSA - Introduction 1% 454 35 Jrmbt 0 22. September 2019
pas_valide ElGamal - Fault attack (Introduction) 1% 139 35 Vozec 0 13. Dezember 2024
pas_valide RSA - Padding 1% 381 35 Tosh 0 9. Oktober 2016
pas_valide RSA - Signature 1% 306 35 sar 0 9. März 2020
pas_valide Shamir Secret Sharing - Traitor 1% 198 35 Vozec 0 5. Februar 2024
pas_valide AES128 - CTR 1% 882 40 Tosh 0 28. August 2015
pas_valide PHP - mt_rand 1% 238 40 NonStandardModel 0 28. März 2022
pas_valide Discrete logarithm problem 1% 1494 40 RFC4949 0 8. Juni 2014
pas_valide RSA - Corrupted key 2 1% 405 40 blackndoor 0 11. Januar 2018
pas_valide RSA - Corrupted key 3 1% 268 40 blackndoor 0 5. September 2019
pas_valide RSA - Multiple recipients 1% 1835 40 franb 0 29. November 2015
pas_valide AES - Fault attack #1 1% 279 50 Cryptanalyse 0 20. September 2018
pas_valide FEAL - Differential Cryptanalysis 1% 97 50 Tosh 0 28. März 2022
pas_valide Goldreich Goldwasser Halevi | Weak Parameter 1% 90 50 Vozec 0 13. Dezember 2024
pas_valide Enigma Machine 1% 325 50 peyman 0 12. Oktober 2016
pas_valide Side Channel - AES : CPA 1% 179 50 cb34 0 28. März 2022
pas_valide ECDHE 1% 324 60 Tosh 0 20. November 2016
pas_valide NTRU | Multiple Transmission 1% 85 60 Vozec 0 13. Dezember 2024
pas_valide NTRU | Weak Parameter 1% 80 60 Vozec 0 13. Dezember 2024
pas_valide RSA - H-rabin 1% 158 60 Vozec 0 21. März 2023
pas_valide RSA - Lee cooper 1% 231 60 blackndoor , Synacktiv 0 7. November 2019
pas_valide Service - CBC Padding 1% 1506 60 koma 0 4. Oktober 2012
pas_valide Side Channel - AES : first round 1% 191 60 walafc0 0 28. März 2022
pas_valide Polyalphabetic substitution - One Time Pad 1% 467 60 Thanat0s 0 2. Juni 2013
pas_valide White-Box Cryptography 1% 351 60 Cryptanalyse 0 21. Oktober 2018
pas_valide AES - Weaker variant 1% 232 70 Cryptanalyse 0 29. August 2018
pas_valide Shamir Secret Sharing - Reduction 1% 146 70 Vozec 0 5. Februar 2024
pas_valide Hash - SHA-3 1% 280 75 Revenger 0 10. Dezember 2016
pas_valide AES - Fault attack #2 1% 195 80 Cryptanalyse 0 20. September 2018
pas_valide Shamir Secret Sharing - Irreducible ? 1% 112 90 Mister7F 0 5. Februar 2024
pas_valide AES-PMAC 1% 85 100 Cryptanalyse 0 26. Mai 2019
pas_valide ECDSA - Implementation error 1% 120 100 Tosh 0 29. September 2019