RSA - Continued fractions

30 Points  0x0

Private key

Author

sambecks,  

Level  Difficulty

Validations

953 Challengers 1%

Note  Notation

80 Votes

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Challenge Results Challenge Results

Pseudo Challenge Lang date
3lectro   RSA - Fractions continues 28 February 2021 at 20:29
EF115_bmkiet   RSA - Continued fractions 28 February 2021 at 03:27
Zeblood   RSA - Fractions continues 23 February 2021 at 21:41
Charlie   RSA - Continued fractions 18 February 2021 at 20:53
Reivax   RSA - Continued fractions 14 February 2021 at 22:25
molegral   RSA - Continued fractions 12 February 2021 at 17:17
ataumo   RSA - Fractions continues 12 February 2021 at 15:10
Mini_Glome   RSA - Fractions continues 9 February 2021 at 16:47
ex0dus   RSA - Fractions continues 4 February 2021 at 02:30
Tmp00   RSA - Continued fractions 28 January 2021 at 10:11

 50 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 54172 5 Xartrick 10
pas_valide Encoding - UU 21% 42451 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 42768 5 g0uZ 6
pas_valide Hash - SHA-2 11% 22021 5 koma 4
pas_valide Shift cipher 7% 13435 10 m31z0nyx 9
pas_valide Pixel Madness 6% 10542 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 5603 15 Lu33Y 10
pas_valide File - PKZIP 4% 7920 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 9991 15 Arod 4
pas_valide Known plaintext - XOR 3% 5973 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 2322 20 Tosh 5
pas_valide File - Insecure storage 1 3% 6231 20 g0uZ 6
pas_valide Polyalphabetic substitution - Vigenère 4% 6623 20 Arod 3
pas_valide System - Android lock pattern 3% 4367 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 4046 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 758 25 Tie21 2
pas_valide AES - ECB 1% 1679 25 cez40 4
pas_valide LFSR - Known plaintext 1% 514 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2831 25 HacKSpider 5
pas_valide RSA - Decipher Oracle 1% 967 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1865 25 g0uZ, koma 4
pas_valide Monoalphabetic substitution - Polybe 2% 2357 25 koma 6
pas_valide Twisted secret 1% 135 25 NonStandardModel 1
pas_valide Initialisation Vector 1% 1280 25 manticore, notfound404 5
pas_valide GEDEFU 1% 417 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 240 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 953 30 sambecks 1
pas_valide RSA - Common modulus 1% 1028 30 franb 2
pas_valide Service - Hash length extension attack 1% 644 30 koma 1
pas_valide AES - 4 Rounds 1% 169 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 142 35 Jrmbt 2
pas_valide RSA - Padding 1% 184 35 Tosh 0
pas_valide RSA - Signature 1% 74 35 s4r 1
pas_valide AES128 - CTR 1% 478 40 Tosh 2
pas_valide Discrete logarithm problem 1% 704 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 161 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 80 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 857 40 franb 3
pas_valide AES - Fault attack #1 1% 91 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 157 50 peyman 2
pas_valide ECDHE 1% 153 60 Tosh 2
pas_valide RSA - Lee cooper 1% 75 60 blackndoor, Synacktiv 1
pas_valide Service - CBC Padding 1% 834 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 306 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 117 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 77 70 Cryptanalyse 1
pas_valide Hash - SHA-3 1% 86 75 Revenger 1
pas_valide AES - Fault attack #2 1% 68 80 Cryptanalyse 1
pas_valide AES-PMAC 1% 12 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 22 100 Tosh 0