ECDSA - Introduction

35 Points  

Conventional attack on ECDSA

Author

Jrmbt,  

Level  Difficulty

Validations

38 Challengers 1%

Note  Notation

1
2
3
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5
12 Votes
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Solution  Solution

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Challenge Results Challenge Results

Pseudo Challenge Lang date
Tosh   ECDSA - Introduction fr 13 October 2019 at 14:30
das   ECDSA - Introduction en 10 October 2019 at 18:13
Nekröm   ECDSA - Introduction fr 10 October 2019 at 16:49
Geluchat   ECDSA - Introduction fr 6 October 2019 at 20:56
Locesi   ECDSA - Introduction fr 6 October 2019 at 16:54
youpla1   ECDSA - Introduction fr 5 October 2019 at 21:10
Phenol   ECDSA - Introduction fr 5 October 2019 at 20:14
rogdham   ECDSA - Introduction fr 4 October 2019 at 21:33
Redouane   ECDSA - Introduction fr 4 October 2019 at 18:07
matthew   ECDSA - Introduction en 30 September 2019 at 10:50

Challenges associated with this section 47 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 38550 5 Xartrick 10
pas_valide Encoding - UU 20% 30523 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 31269 5 g0uZ 6
pas_valide Hash - SHA-2 11% 15566 5 koma 4
pas_valide Shift cipher 7% 9270 10 m31z0nyx 5
pas_valide Pixel Madness 5% 7451 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 4244 15 Lu33Y 10
pas_valide File - PKZIP 4% 5484 15 g0uZ 5
pas_valide Monoalphabetic substitution - Caesar 5% 7160 15 Arod 4
pas_valide Known plaintext - XOR 3% 4461 20 Ryscrow 4
pas_valide Code - Pseudo Random Number Generator 2% 1684 20 Tosh 5
pas_valide File - Insecure storage 1 4% 4907 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 4832 20 Arod 3
pas_valide System - Android lock pattern 3% 3109 20 Silentd 3
pas_valide Transposition - Rail Fence 2% 2934 20 YellowS4 2
pas_valide AES - CBC - Bit-Flipping Attack 1% 330 25 Tie21 1
pas_valide AES - ECB 1% 1237 25 cez40 4
pas_valide LFSR - Known plaintext 1% 252 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2034 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 561 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1467 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1683 25 koma 6
pas_valide Initialisation Vector 1% 917 25 manticore, notfound 3
pas_valide GEDEFU 1% 297 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 130 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 699 30 sambecks 1
pas_valide RSA - Common modulus 1% 651 30 franb 2
pas_valide Service - Hash length extension attack 1% 431 30 koma 1
pas_valide AES - 4 Rounds 1% 98 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 38 35 Jrmbt 0
pas_valide RSA - Padding 1% 128 35 Tosh 0
pas_valide AES128 - CTR 1% 384 40 Tosh 1
pas_valide Discrete logarithm problem 1% 507 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 96 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 33 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 589 40 franb 3
pas_valide AES - Fault attack #1 1% 50 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 108 50 peyman 1
pas_valide ECDHE 1% 115 60 Tosh 2
pas_valide Service - CBC Padding 1% 625 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 261 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 85 60 Cryptanalyse 2
pas_valide AES - Weaker variant 1% 36 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 59 75 Revenger 1
pas_valide AES - Fault attack #2 1% 34 80 Cryptanalyse 0
pas_valide AES-PMAC 1% 8 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 8 100 Tosh 0