Code - Pseudo Random Number Generator

20 Points  0x0

Strange encryption.

Author

Tosh,  

Level  Difficulty

Validations

1822 Challengers 2%

Note  Notation

171 Votes

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 48 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution
pas_valide Encoding - ASCII 26% 42252 5 Xartrick 10
pas_valide Encoding - UU 20% 33387 5 g0uZ 10
pas_valide Hash - Message Digest 5 21% 34057 5 g0uZ 6
pas_valide Hash - SHA-2 11% 17142 5 koma 4
pas_valide Shift cipher 7% 10278 10 m31z0nyx 6
pas_valide Pixel Madness 5% 8221 15 Ryscrow 10
pas_valide ELF64 - PID encryption 3% 4629 15 Lu33Y 10
pas_valide File - PKZIP 4% 6120 15 g0uZ 6
pas_valide Monoalphabetic substitution - Caesar 5% 7814 15 Arod 4
pas_valide Known plaintext - XOR 3% 4854 20 Ryscrow 5
pas_valide Code - Pseudo Random Number Generator 2% 1822 20 Tosh 5
pas_valide File - Insecure storage 1 4% 5235 20 g0uZ 5
pas_valide Polyalphabetic substitution - Vigenère 4% 5296 20 Arod 3
pas_valide System - Android lock pattern 3% 3412 20 Silentd 4
pas_valide Transposition - Rail Fence 2% 3237 20 YellowS4 3
pas_valide AES - CBC - Bit-Flipping Attack 1% 408 25 Tie21 1
pas_valide AES - ECB 1% 1359 25 cez40 4
pas_valide LFSR - Known plaintext 1% 312 25 Brissouille 1
pas_valide RSA - Factorisation 2% 2229 25 HacKSpider 4
pas_valide RSA - Decipher Oracle 1% 636 25 Zweisamkeit 3
pas_valide Service - Timing attack 1% 1545 25 g0uZ, koma 3
pas_valide Monoalphabetic substitution - Polybe 2% 1837 25 koma 6
pas_valide Initialisation Vector 1% 1001 25 manticore, notfound404 5
pas_valide GEDEFU 1% 321 30 makhno 1
pas_valide RSA - Corrupted key 1 1% 153 30 blackndoor 2
pas_valide RSA - Continued fractions 1% 758 30 sambecks 1
pas_valide RSA - Common modulus 1% 743 30 franb 2
pas_valide Service - Hash length extension attack 1% 466 30 koma 1
pas_valide AES - 4 Rounds 1% 117 35 Cryptanalyse 0
pas_valide ECDSA - Introduction 1% 77 35 Jrmbt 0
pas_valide RSA - Padding 1% 141 35 Tosh 0
pas_valide AES128 - CTR 1% 406 40 Tosh 1
pas_valide Discrete logarithm problem 1% 556 40 Thanat0s, RFC4949 3
pas_valide RSA - Corrupted key 2 1% 108 40 blackndoor 0
pas_valide RSA - Corrupted key 3 1% 50 40 blackndoor 0
pas_valide RSA - Multiple recipients 1% 658 40 franb 3
pas_valide AES - Fault attack #1 1% 60 50 Cryptanalyse 1
pas_valide Enigma Machine 1% 112 50 peyman 1
pas_valide ECDHE 1% 123 60 Tosh 2
pas_valide RSA - Lee cooper 1% 34 60 blackndoor, Synacktiv 0
pas_valide Service - CBC Padding 1% 685 60 koma 1
pas_valide Polyalphabetic substitution - One Time Pad 1% 267 60 Thanat0s 0
pas_valide White-Box Cryptography 1% 90 60 Cryptanalyse 3
pas_valide AES - Weaker variant 1% 37 70 Cryptanalyse 0
pas_valide Hash - SHA-3 1% 61 75 Revenger 1
pas_valide AES - Fault attack #2 1% 42 80 Cryptanalyse 0
pas_valide AES-PMAC 1% 9 100 Cryptanalyse 0
pas_valide ECDSA - Implementation error 1% 14 100 Tosh 0