GEDEFU

30 Points  0x0

June 2, 1918, he decrypts an important message to win the First World War

Author

makhno,  

Level  Difficulty

Validations

463 Challengers 1%

Note  Notation

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73 Votes

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 1 Solution

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Challenge Results Challenge Results

Pseudo Challenge Lang Date
Callyan   GEDEFU 24 January 2022 at 13:28
Guigui   GEDEFU 23 January 2022 at 22:13
spystrach   GEDEFU 19 January 2022 at 18:33
stchkv   GEDEFU 5 January 2022 at 15:53
bombadil40   GEDEFU 2 January 2022 at 20:50
Jos18   GEDEFU 30 December 2021 at 17:34
Achléole   GEDEFU 25 December 2021 at 22:56
r00tSIS   GEDEFU 23 December 2021 at 15:21
Pyfu   GEDEFU 6 December 2021 at 22:54
Céline   GEDEFU 10 November 2021 at 19:13

 56 Challenges

Results Name Validations Number of points  Explanation for the scores Difficulty  Difficulty Author Note  Notation Solution Date
pas_valide Encoding - ASCII 26% 63771 5 Xartrick 10 4 December 2012
pas_valide Encoding - UU 21% 49450 5 g0uZ 10 7 October 2006
pas_valide Hash - DCC 1% 1508 5 Shutdown 1 13 July 2021
pas_valide Hash - DCC2 1% 1506 5 Shutdown 1 13 July 2021
pas_valide Hash - LM 1% 1795 5 Shutdown 1 13 July 2021
pas_valide Hash - Message Digest 5 20% 47812 5 g0uZ 7 31 January 2010
pas_valide Hash - NT 1% 1245 5 Shutdown 1 13 July 2021
pas_valide Hash - SHA-2 10% 24597 5 koma 4 3 June 2012
pas_valide Shift cipher 7% 15220 10 m31z0nyx 9 16 February 2011
pas_valide CISCO - Salted Password 1% 1087 10 Tidusrose 3 13 July 2021
pas_valide Pixel Madness 5% 11935 15 Ryscrow 10 3 February 2011
pas_valide ELF64 - PID encryption 3% 6084 15 Lu33Y 10 8 February 2012
pas_valide File - PKZIP 4% 9045 15 g0uZ 6 30 August 2010
pas_valide Monoalphabetic substitution - Caesar 5% 11507 15 Arod 5 22 October 2011
pas_valide Known plaintext - XOR 3% 6709 20 Ryscrow 5 3 February 2011
pas_valide Code - Pseudo Random Number Generator 2% 2614 20 Tosh 6 19 December 2012
pas_valide File - Insecure storage 1 3% 6912 20 g0uZ 7 6 February 2012
pas_valide Polyalphabetic substitution - Vigenère 4% 7551 20 Arod 3 26 October 2011
pas_valide System - Android lock pattern 3% 5025 20 Silentd 5 23 December 2012
pas_valide Transposition - Rail Fence 2% 4645 20 YellowS4 4 6 April 2014
pas_valide AES - CBC - Bit-Flipping Attack 1% 977 25 Tie21 4 17 June 2018
pas_valide AES - ECB 1% 1880 25 cez40 4 29 November 2015
pas_valide LFSR - Known plaintext 1% 629 25 Brissouille 2 28 November 2017
pas_valide RSA - Factorisation 2% 3265 25 HacKSpider 5 12 September 2010
pas_valide RSA - Decipher Oracle 1% 1173 25 Zweisamkeit 3 11 May 2017
pas_valide Service - Timing attack 1% 2093 25 g0uZ 4 28 October 2012
pas_valide Monoalphabetic substitution - Polybe 2% 2720 25 koma 6 6 December 2011
pas_valide Twisted secret 1% 233 25 NonStandardModel 1 14 August 2020
pas_valide Initialisation Vector 1% 1484 25 manticore 6 25 August 2015
pas_valide GEDEFU 1% 463 30 makhno 1 13 September 2016
pas_valide OTP - Implementation error 1% 165 30 Podalirius 2 22 March 2021
pas_valide RSA - Corrupted key 1 1% 289 30 blackndoor 2 28 November 2017
pas_valide RSA - Continued fractions 1% 1062 30 sambecks 1 8 September 2015
pas_valide RSA - Common modulus 1% 1218 30 franb 3 24 December 2016
pas_valide Service - Hash length extension attack 1% 761 30 koma 1 19 August 2015
pas_valide AES - 4 Rounds 1% 204 35 Cryptanalyse 0 5 September 2018
pas_valide ECDSA - Introduction 1% 190 35 Jrmbt 2 22 September 2019
pas_valide RSA - Padding 1% 205 35 Tosh 0 9 October 2016
pas_valide RSA - Signature 1% 104 35 sar 1 9 March 2020
pas_valide AES128 - CTR 1% 532 40 Tosh 2 28 August 2015
pas_valide Discrete logarithm problem 1% 810 40 RFC4949 3 8 June 2014
pas_valide RSA - Corrupted key 2 1% 195 40 blackndoor 1 11 January 2018
pas_valide RSA - Corrupted key 3 1% 101 40 blackndoor 0 5 September 2019
pas_valide RSA - Multiple recipients 1% 998 40 franb 3 29 November 2015
pas_valide AES - Fault attack #1 1% 109 50 Cryptanalyse 1 20 September 2018
pas_valide Enigma Machine 1% 185 50 peyman 2 12 October 2016
pas_valide ECDHE 1% 181 60 Tosh 2 20 November 2016
pas_valide RSA - Lee cooper 1% 92 60 blackndoor 1 7 November 2019
pas_valide Service - CBC Padding 1% 934 60 koma 1 4 October 2012
pas_valide Polyalphabetic substitution - One Time Pad 1% 328 60 Thanat0s 0 2 June 2013
pas_valide White-Box Cryptography 1% 149 60 Cryptanalyse 3 21 October 2018
pas_valide AES - Weaker variant 1% 93 70 Cryptanalyse 1 29 August 2018
pas_valide Hash - SHA-3 1% 116 75 Revenger 1 10 December 2016
pas_valide AES - Fault attack #2 1% 80 80 Cryptanalyse 1 20 September 2018
pas_valide AES-PMAC 1% 17 100 Cryptanalyse 0 26 May 2019
pas_valide ECDSA - Implementation error 1% 34 100 Tosh 0 29 September 2019