RSA - Continued fractions

30 Points  

Private key

Author

sambecks,  

Level  Difficulty

Validations

559 Challengers 1%

Note  Notation

1
2
3
4
5
49 Votes
To reach this part of the site please login

Solution 1 Solution

Display solutions Submit a solution

Challenge Results Challenge Results

Pseudo Challenge Lang date
mabenz   RSA - Fractions continues fr 10 December 2018 at 17:10
$in   RSA - Fractions continues fr 10 December 2018 at 17:07
shad3264   RSA - Continued fractions en 6 December 2018 at 18:41
3cl1ps   RSA - Continued fractions en 29 November 2018 at 16:55
whira   RSA - Fractions continues fr 26 November 2018 at 22:17
T3K4   RSA - Fractions continues fr 23 November 2018 at 22:06
kusok   RSA - Continued fractions en 23 November 2018 at 09:37
Vralc   RSA - Fractions continues fr 22 November 2018 at 17:22
ranmed   RSA - Fractions continues fr 21 November 2018 at 20:30
2phi   RSA - Fractions continues fr 18 November 2018 at 00:56

Challenges associated with this section 43 Challenges

Results Challenge's Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 28% 28766 5 Xartrick 10
pas_valide Encoding - UU 22% 23085 5 g0uZ 10
pas_valide Hash - Message Digest 5 23% 23833 5 g0uZ 6
pas_valide Hash - SHA-2 12% 12100 5 koma 3
pas_valide Shift cipher 7% 7131 10 m31z0nyx 5
pas_valide Pixel Madness 6% 5818 15 Ryscrow 10
pas_valide ELF64 - PID encryption 4% 3526 15 Lu33Y 10
pas_valide File - PKZIP 5% 4299 15 g0uZ 5
pas_valide Monoalphabetic substitution - Caesar 6% 5691 15 Arod 4
pas_valide Known plaintext - XOR 4% 3585 20 Ryscrow 4
pas_valide Code - Pseudo Random Number Generator 2% 1347 20 Tosh 4
pas_valide File - Insecure storage 1 5% 4262 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 3897 20 Arod 3
pas_valide System - Android lock pattern 3% 2462 20 Silentd 3
pas_valide Transposition - Rail Fence 3% 2311 20 YellowS4 2
pas_valide AES - CBC - Bit-Flipping Attack 1% 124 25 Tie21 1
pas_valide AES - ECB 1% 992 25 cez40 4
pas_valide LFSR - Known plaintext 1% 138 25 Brissouille 1
pas_valide RSA - Factorisation 2% 1582 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 368 25 Zweisamkeit 3
pas_valide Service - Timing attack 2% 1235 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1370 25 koma 6
pas_valide Initialisation Vector 1% 706 25 notfound, manticore 3
pas_valide GEDEFU 1% 221 30 makhno 1
pas_valide RSA - Corrupted key V1 1% 82 30 blackndoor 1
pas_valide RSA - Continued fractions 1% 559 30 sambecks 1
pas_valide RSA - Common modulus 1% 454 30 franb 2
pas_valide Service - Hash length extension attack 1% 333 30 koma 1
pas_valide AES - 4 Rounds 1% 44 35 Cryptanalyse 0
pas_valide RSA - Padding 1% 101 35 Tosh 0
pas_valide AES128 - CTR 1% 324 40 Tosh 1
pas_valide Discrete logarithm problem 1% 419 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key V2 1% 58 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 457 40 franb 3
pas_valide AES - Fault attack #1 1% 21 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 79 50 peyman 0
pas_valide ECDHE 1% 83 60 Tosh 2
pas_valide Service - CBC Padding 1% 519 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 228 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 40 60 Cryptanalyse 1
pas_valide AES - Weaker variant 1% 16 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 44 75 Revenger 1
pas_valide AES - Fault attack #2 1% 14 80 Cryptanalyse 0