Polyalphabetic substitution - One Time Pad

60 Points

A Perfect cipher only if…

Author

Thanat0s, 2 June 2013

Level

Validations

370 Challengers 1%

Note

129 Votes

To reach this part of the site please login

Solution

Submit a solution

Challenge Results

Pseudo	Challenge	Lang	Date
23euros	Substitution polyalphabétique - Masque jetable		7 April 2021 at 14:27
jrjgjk	Substitution polyalphabétique - Masque jetable		7 April 2021 at 14:27
SamiK	Substitution polyalphabétique - Masque jetable		1 April 2021 at 19:07
Fyxneo	Substitution polyalphabétique - Masque jetable		6 March 2021 at 08:18
rosenzweig	Substitution polyalphabétique - Masque jetable		23 February 2021 at 21:59
themaks	Substitution polyalphabétique - Masque jetable		19 February 2021 at 22:32
ZayrroX	Substitution polyalphabétique - Masque jetable		18 February 2021 at 23:18
yokese	Substitution polyalphabétique - Masque jetable		15 February 2021 at 22:15
Mhd_Root	Substitution polyalphabétique - Masque jetable		13 February 2021 at 23:00
firekwinox	Substitution polyalphabétique - Masque jetable		2 February 2021 at 22:44

69 Challenges

Results	Name ↓↑	Validations	Number of points	Difficulty	Author	Note	Solution	Date
	AES - 4 Rounds	1% 310	35		Cryptanalyse		0	5 September 2018
	AES - CBC - Bit-Flipping Attack	1% 1529	25		Tie21		4	17 June 2018
	AES - ECB	1% 2461	25		cez40		4	29 November 2015
	AES - ECB - Copy Paste	1% 142	25		Vozec		1	5 February 2024
	AES - Fault attack #1	1% 169	50		Cryptanalyse		1	20 September 2018
	AES - Fault attack #2	1% 123	80		Cryptanalyse		1	20 September 2018
	AES - Weaker variant	1% 125	70		Cryptanalyse		1	29 August 2018
	AES-PMAC	1% 33	100		Cryptanalyse		0	26 May 2019
	AES128 - CTR	1% 663	40		Tosh		2	28 August 2015
	CISCO - Salted Password	2% 4142	10		Tidusrose		3	13 July 2021
	Circular Bit Shift	1% 598	20		BlackRaven		3	21 March 2023
	Code - Pseudo Random Number Generator	1% 3212	20		Tosh		6	19 December 2012
	Discrete logarithm problem	1% 1184	40		RFC4949		3	8 June 2014
	ECDHE	1% 222	60		Tosh		2	20 November 2016
	ECDSA - Implementation error	1% 52	100		Tosh		0	29 September 2019
	ECDSA - Introduction	1% 287	35		Jrmbt		2	22 September 2019
	ELF64 - PID encryption	3% 7384	15		Lu33Y		10	8 February 2012
	Encoding - ASCII	26% 83994	5		Xartrick		10	4 December 2012
	Encoding - Codebook	1% 237	20		n3rada		1	21 March 2023
	Encoding - UU	20% 64818	5		g0uZ		10	7 October 2006
	Enigma Machine	1% 244	50		peyman		2	12 October 2016
	FEAL - Differential Cryptanalysis	1% 35	50		Tosh		0	28 March 2022
	File - Insecure storage 1	3% 8685	20		g0uZ		7	6 February 2012
	File - PKZIP	4% 11939	15		g0uZ		6	30 August 2010
	GEDEFU	1% 548	30		makhno		1	13 September 2016
	Hash - DCC	2% 6203	5		Podalirius		1	13 July 2021
	Hash - DCC2	2% 5851	5		Podalirius		1	13 July 2021
	Hash - LM	2% 6357	5		Podalirius		1	13 July 2021
	Hash - Message Digest 5	18% 58105	5		g0uZ		7	31 January 2010
	Hash - NT	2% 5023	5		Podalirius		1	13 July 2021
	Hash - SHA-2	10% 30496	5		koma		4	3 June 2012
	Hash - SHA-3	1% 148	75		Revenger		1	10 December 2016
	Hill Cipher	1% 148	30		LetMeR00t		0	21 March 2023
	Initialisation Vector	1% 2026	25		manticore , notfound404		6	25 August 2015
	Known plaintext - XOR	3% 8351	20		Ryscrow		5	3 February 2011
	LFSR - Known plaintext	1% 907	25		Brissouille		2	28 November 2017
	Monoalphabetic substitution - Caesar	5% 15163	15		Arod		5	22 October 2011
	Monoalphabetic substitution - Polybe	2% 3639	25		koma		6	6 December 2011
	OTP - Implementation error	1% 382	30		Podalirius		2	22 March 2021
	PHP - mt_rand	1% 131	40		NonStandardModel		0	28 March 2022
	Pixel Madness	5% 14926	15		Ryscrow		10	3 February 2011
	Polyalphabetic substitution - One Time Pad	1% 370	60		Thanat0s		0	2 June 2013