ECDSA - Introduction

35 Points  0x0

Conventional attack on ECDSA

Author

Jrmbt,  

Level  Difficulty

Validations

132 Challengers 1%

Note  Notation

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5
27 Votes

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 2 Solutions

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Laden   ECDSA - Introduction 24 November 2020 at 16:57
arthemis   ECDSA - Introduction 21 November 2020 at 11:52
Kasen   ECDSA - Introduction 12 November 2020 at 01:34
TORCUD   ECDSA - Introduction 11 November 2020 at 19:16
catdog   ECDSA - Introduction 11 November 2020 at 18:06
bytemare   ECDSA - Introduction 11 November 2020 at 17:59
AziXus   ECDSA - Introduction 5 November 2020 at 12:16
ArnC   ECDSA - Introduction 27 October 2020 at 09:47
nikost   ECDSA - Introduction 20 October 2020 at 17:05
Brissouille   ECDSA - Introduction 16 October 2020 at 14:28

 50 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 51708 5 Xartrick 10
pas_valide Encoding - UU 21% 40614 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 40978 5 g0uZ 6
pas_valide Hash - SHA-2 11% 21021 5 koma 4
pas_valide Shift cipher 7% 12850 10 m31z0nyx 8
pas_valide Pixel Madness 6% 10088 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 5439 15 Lu33Y 10
pas_valide File - PKZIP 4% 7552 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 9626 15 Arod 4
pas_valide Known plaintext - XOR 3% 5774 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 2218 20 Tosh 5
pas_valide File - Insecure storage 1 4% 6017 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 6399 20 Arod 3
pas_valide System - Android lock pattern 3% 4181 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3860 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 689 25 Tie21 2
pas_valide AES - ECB 1% 1618 25 cez40 4
pas_valide LFSR - Known plaintext 1% 471 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2716 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 903 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1805 25 g0uZ, koma 4
pas_valide Monoalphabetic substitution - Polybe 2% 2263 25 koma 6
pas_valide Twisted secret 1% 99 25 NonStandardModel 1
pas_valide Initialisation Vector 1% 1232 25 manticore, notfound404 5
pas_valide GEDEFU 1% 403 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 223 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 919 30 sambecks 1
pas_valide RSA - Common modulus 1% 972 30 franb 2
pas_valide Service - Hash length extension attack 1% 608 30 koma 1
pas_valide AES - 4 Rounds 1% 161 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 132 35 Jrmbt 2
pas_valide RSA - Padding 1% 176 35 Tosh 0
pas_valide RSA - Signature 1% 67 35 s4r 1
pas_valide AES128 - CTR 1% 466 40 Tosh 1
pas_valide Discrete logarithm problem 1% 666 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 147 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 75 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 824 40 franb 3
pas_valide AES - Fault attack #1 1% 85 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 148 50 peyman 2
pas_valide ECDHE 1% 147 60 Tosh 2
pas_valide RSA - Lee cooper 1% 66 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 808 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 295 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 110 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 56 70 Cryptanalyse 1
pas_valide Hash - SHA-3 1% 81 75 Revenger 1
pas_valide AES - Fault attack #2 1% 63 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 11 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 20 100 Tosh 0