RSA - Continued fractions

30 Points  

Private key

Author

sambecks,  

Level  Difficulty

Validations

647 Challengers 1%

Note  Notation

58 Votes
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Challenge Results Challenge Results


Challenges associated with this section 44 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 35330 5 Xartrick 10
pas_valide Encoding - UU 21% 28044 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 28768 5 g0uZ 6
pas_valide Hash - SHA-2 11% 14325 5 koma 4
pas_valide Shift cipher 7% 8474 10 m31z0nyx 5
pas_valide Pixel Madness 5% 6833 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 3965 15 Lu33Y 10
pas_valide File - PKZIP 4% 5065 15 g0uZ 5
pas_valide Monoalphabetic substitution - Caesar 5% 6634 15 Arod 4
pas_valide Known plaintext - XOR 4% 4167 20 Ryscrow 4
pas_valide Code - Pseudo Random Number Generator 2% 1573 20 Tosh 5
pas_valide File - Insecure storage 1 4% 4690 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 4516 20 Arod 3
pas_valide System - Android lock pattern 3% 2884 20 Silentd 3
pas_valide Transposition - Rail Fence 2% 2713 20 YellowS4 2
pas_valide AES - CBC - Bit-Flipping Attack 1% 245 25 Tie21 1
pas_valide AES - ECB 1% 1142 25 cez40 4
pas_valide LFSR - Known plaintext 1% 201 25 Brissouille 1
pas_valide RSA - Factorisation 2% 1901 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 491 25 Zweisamkeit 3
pas_valide Service - Timing attack 2% 1393 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1570 25 koma 6
pas_valide Initialisation Vector 1% 842 25 manticore, notfound 3
pas_valide GEDEFU 1% 268 30 makhno 1
pas_valide RSA - Corrupted key V1 1% 107 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 647 30 sambecks 1
pas_valide RSA - Common modulus 1% 582 30 franb 2
pas_valide Service - Hash length extension attack 1% 381 30 koma 1
pas_valide AES - 4 Rounds 1% 76 35 Cryptanalyse 0
pas_valide RSA - Padding 1% 115 35 Tosh 0
pas_valide AES128 - CTR 1% 362 40 Tosh 1
pas_valide Discrete logarithm problem 1% 482 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key V2 1% 86 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 549 40 franb 3
pas_valide AES - Fault attack #1 1% 38 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 97 50 peyman 1
pas_valide ECDHE 1% 103 60 Tosh 2
pas_valide Service - CBC Padding 1% 590 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 247 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 64 60 Cryptanalyse 2
pas_valide AES - Weaker variant 1% 27 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 56 75 Revenger 1
pas_valide AES - Fault attack #2 1% 26 80 Cryptanalyse 0
pas_valide AES-PMAC 1% 4 100 Cryptanalyse 0