White-Box Cryptography

60 Points

Reverse Python

Author

Cryptanalyse, 21 October 2018

Level

Validations

376 Challengers 1%

Note

62 Votes

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3 Solutions

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Challenge Results

Pseudo	Challenge	Lang	Date
ᖒᕾᕲᙉᕩᔾ	White-Box Cryptography		8 October 2026 at 19:45
s5m87	White-Box Cryptography		5 October 2026 at 21:54
algol	White-Box Cryptography		2 October 2026 at 17:13
olinux	White-Box Cryptography		2 October 2026 at 14:45
Djayk	White-Box Cryptography		1 October 2026 at 11:37
rreyes	White-Box Cryptography		23 September 2026 at 01:30
kobaci	White-Box Cryptography		22 September 2026 at 06:05
estelle_alz	White-Box Cryptography		21 September 2026 at 15:59
R&D	White-Box Cryptography		16 September 2026 at 22:16
cbibi	White-Box Cryptography		15 September 2026 at 09:19

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75 Challenges

Results	Name	Validations	Number of points	Difficulty	Author	Note	Solution	Date
	Encoding - ASCII	25% 100305	5		Xartrick		10	4 December 2012
	Encoding - UU	20% 76687	5		g0uZ		10	7 October 2006
	Hash - DCC	3% 10904	5		Podalirius		1	13 July 2021
	Hash - DCC2	3% 9902	5		Podalirius		1	13 July 2021
	Hash - LM	3% 10297	5		Podalirius		2	13 July 2021
	Hash - Message Digest 5	17% 65599	5		g0uZ		7	31 January 2010
	Hash - NT	3% 8451	5		Podalirius		2	13 July 2021
	Hash - SHA-2	9% 34830	5		koma		4	3 June 2012
	Shift cipher	6% 22890	10		m31z0nyx		10	16 February 2011
	CISCO - Salted Password	2% 6860	10		Tidusrose		3	13 July 2021
	Pixel Madness	5% 17588	15		Ryscrow		10	3 February 2011
	ELF64 - PID encryption	3% 8776	15		Lu33Y		10	8 February 2012
	File - PKZIP	4% 14574	15		g0uZ		6	30 August 2010
	Monoalphabetic substitution - Caesar	5% 18703	15		Arod		5	22 October 2011
	Circular Bit Shift	1% 2511	20		BlackRaven		3	21 March 2023
	Known plaintext - XOR	3% 10357	20		Ryscrow		5	3 February 2011
	Code - Pseudo Random Number Generator	2% 4261	20		Tosh		6	19 December 2012
	Encoding - Codebook	1% 764	20		n3rada		1	21 March 2023
	File - PKZIP 2	1% 735	20		kevin.mille		2	8 November 2024
	File - Insecure storage 1	3% 9995	20		g0uZ		7	6 February 2012
	Polyalphabetic substitution - Vigenère	3% 11384	20		Arod		3	26 October 2011
	System - Android lock pattern	2% 7521	20		Silentd		5	23 December 2012
	Transposition - Rail Fence	2% 7141	20		YellowS4		4	6 April 2014
	AES - CBC - Bit-Flipping Attack	1% 1863	25		Tie21		5	17 June 2018
	AES - ECB	1% 3082	25		cez40		4	29 November 2015
	AES - ECB - Copy Paste	1% 559	25		Vozec		1	5 February 2024
	DSA - Implementation error	1% 289	25		Vozec		1	13 December 2024
	LFSR - Known plaintext	1% 1355	25		Brissouille		2	28 November 2017
	RSA - Factorisation	2% 5682	25		HacKSpider		5	12 September 2010
	RSA - Decipher Oracle	1% 2345	25		Zweisamkeit		4	11 May 2017
	Service - Timing attack	1% 3125	25		g0uZ , koma		5	28 October 2012
	Monoalphabetic substitution - Polybe	2% 4283	25		koma		6	6 December 2011
	Twisted secret	1% 702	25		NonStandardModel		2	14 August 2020
	Initialisation Vector	1% 2545	25		manticore , notfound404		6	25 August 2015
	Hill Cipher	1% 454	30		LetMeR00t		1	21 March 2023
	GEDEFU	1% 676	30		makhno		1	13 September 2016
	OTP - Implementation error	1% 656	30		Podalirius		3	22 March 2021
	RSA - Corrupted key 1	1% 597	30		blackndoor		2	28 November 2017
	RSA - Continued fractions	1% 1744	30		sambecks		1	8 September 2015
	RSA - Common modulus	1% 2335	30		franb		3	24 December 2016
	Service - Hash length extension attack	1% 1323	30		koma		1	19 August 2015
	Shamir Secret Sharing - Introduction	1% 550	30		Vozec		2	5 February 2024
	AES - 4 Rounds	1% 479	35		Cryptanalyse		0	5 September 2018
	ECDSA - Introduction	1% 467	35		Jrmbt		2	22 September 2019
	ElGamal - Fault attack (Introduction)	1% 153	35		Vozec		0	13 December 2024
	RSA - Padding	1% 391	35		Tosh		0	9 October 2016
	RSA - Signature	1% 317	35		sar		1	9 March 2020
	Shamir Secret Sharing - Traitor	1% 204	35		Vozec		1	5 February 2024
	AES128 - CTR	1% 896	40		Tosh		2	28 August 2015
	PHP - mt_rand	1% 251	40		NonStandardModel		0	28 March 2022
	Discrete logarithm problem	1% 1519	40		RFC4949		3	8 June 2014
	RSA - Corrupted key 2	1% 419	40		blackndoor		1	11 January 2018
	RSA - Corrupted key 3	1% 284	40		blackndoor		0	5 September 2019
	RSA - Multiple recipients	1% 1857	40		franb		4	29 November 2015
	AES - Fault attack #1	1% 292	50		Cryptanalyse		1	20 September 2018
	FEAL - Differential Cryptanalysis	1% 100	50		Tosh		1	28 March 2022
	Goldreich Goldwasser Halevi \| Weak Parameter	1% 112	50		Vozec		0	13 December 2024
	Enigma Machine	1% 348	50		peyman		2	12 October 2016
	Side Channel - AES : CPA	1% 191	50		cb34		0	28 March 2022
	ECDHE	1% 350	60		Tosh		2	20 November 2016
	NTRU \| Multiple Transmission	1% 102	60		Vozec		0	13 December 2024
	NTRU \| Weak Parameter	1% 95	60		Vozec		0	13 December 2024
	RSA - H-rabin	1% 175	60		Vozec		0	21 March 2023
	RSA - Lee cooper	1% 248	60		blackndoor , Synacktiv		1	7 November 2019
	Service - CBC Padding	1% 1523	60		koma		2	4 October 2012
	Side Channel - AES : first round	1% 207	60		walafc0		0	28 March 2022
	Polyalphabetic substitution - One Time Pad	1% 489	60		Thanat0s		0	2 June 2013
	White-Box Cryptography	1% 376	60		Cryptanalyse		3	21 October 2018
	AES - Weaker variant	1% 249	70		Cryptanalyse		1	29 August 2018
	Shamir Secret Sharing - Reduction	1% 171	70		Vozec		0	5 February 2024
	Hash - SHA-3	1% 313	75		Revenger		1	10 December 2016
	AES - Fault attack #2	1% 211	80		Cryptanalyse		1	20 September 2018
	Shamir Secret Sharing - Irreducible ?	1% 128	90		Mr7F		1	5 February 2024
	AES-PMAC	1% 109	100		Cryptanalyse		0	26 May 2019
	ECDSA - Implementation error	1% 145	100		Tosh		0	29 September 2019