ECDSA - Implementation error

100 Points  0x0

It’s random...

Author

Tosh,  

Level  Difficulty

Validations

16 Challengers 1%

Note  Notation

15 Votes

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  Solution

Challenge Results Challenge Results

Pseudo Challenge Lang date
macz   ECDSA - Implementation error 15 February 2020 at 22:04
kasia-tutej   ECDSA - Implementation error 28 January 2020 at 19:32
pedroysb   ECDSA - Implementation error 14 January 2020 at 01:45
Lefnui   ECDSA - Implementation error 25 November 2019 at 17:51
Tosh   ECDSA - Erreur d’implémentation 1 November 2019 at 12:53
Kurt   ECDSA - Implementation error 26 October 2019 at 22:23
H4cK0pp   ECDSA - Erreur d’implémentation 21 October 2019 at 16:06
ocalex86   ECDSA - Implementation error 18 October 2019 at 10:53
Th3_JagDt1g3R   ECDSA - Implementation error 6 October 2019 at 23:58
rogdham   ECDSA - Erreur d’implémentation 6 October 2019 at 15:58

 48 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 43555 5 Xartrick 10
pas_valide Encoding - UU 21% 34370 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 34986 5 g0uZ 6
pas_valide Hash - SHA-2 11% 17673 5 koma 4
pas_valide Shift cipher 7% 10629 10 m31z0nyx 6
pas_valide Pixel Madness 5% 8480 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 4748 15 Lu33Y 10
pas_valide File - PKZIP 4% 6309 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 8062 15 Arod 4
pas_valide Known plaintext - XOR 3% 4990 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 1873 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5330 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 5455 20 Arod 3
pas_valide System - Android lock pattern 3% 3510 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3336 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 441 25 Tie21 1
pas_valide AES - ECB 1% 1398 25 cez40 4
pas_valide LFSR - Known plaintext 1% 344 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2304 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 677 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1574 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1882 25 koma 6
pas_valide Initialisation Vector 1% 1031 25 manticore, notfound404 5
pas_valide GEDEFU 1% 328 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 162 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 780 30 sambecks 1
pas_valide RSA - Common modulus 1% 780 30 franb 2
pas_valide Service - Hash length extension attack 1% 485 30 koma 1
pas_valide AES - 4 Rounds 1% 122 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 84 35 Jrmbt 0
pas_valide RSA - Padding 1% 146 35 Tosh 0
pas_valide AES128 - CTR 1% 420 40 Tosh 1
pas_valide Discrete logarithm problem 1% 566 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 113 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 55 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 686 40 franb 3
pas_valide AES - Fault attack #1 1% 67 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 118 50 peyman 1
pas_valide ECDHE 1% 127 60 Tosh 2
pas_valide RSA - Lee cooper 1% 39 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 705 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 271 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 91 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 42 70 Cryptanalyse 1
pas_valide Hash - SHA-3 1% 62 75 Revenger 1
pas_valide AES - Fault attack #2 1% 48 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 9 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 16 100 Tosh 0