Challenges

Scores are based on the number of solves.

Challenges matching the selected filters
#	Name	Category	Authors	Score	Solves
1	16 bytes: 512-bit primes	Cryptography	Superior	909	14
2	Clash of MD5	Cryptography	Superior	909	14
3	At the end	Cryptography	unknown	895	15
4	Broken Cert Revenge	Cryptography	Tulgaaaa	880	16
5	Collision finder	Cryptography	Superior	880	16
6	Prime or not Prime	Cryptography	Superior	880	16
7	Fancy text	Cryptography	Superior	864	17
8	NoobSaiBotSSuper	Cryptography	w01f	864	17
9	Scambet	Cryptography	Superior	864	17
10	16 bytes: 128-bit primes	Cryptography	Superior	847	18
11	Encryption service 2	Cryptography	Superior	847	18
12	Shuffle	Cryptography	Khulegu	847	18
13	Verification: Revolutions	Cryptography	Superior	847	18
14	Encryption service 3	Cryptography	Superior	790	21
15	RandCrack	Cryptography	Superior	790	21
16	Unknown seed	Cryptography	Superior	790	21
17	Handshake	Cryptography	Flame	747	23
18	Symbols	Cryptography	zjzoloo	747	23
19	The First Half: Revolutions	Cryptography	Superior	747	23
20	Encryption service 1	Cryptography	Superior	700	25
21	Impossible to decrypt	Cryptography	Superior	700	25
22	Kano	Cryptography	unknown	700	25
23	Nature	Cryptography	Bilgee	700	25
24	96	Cryptography	ci0	675	26
25	Verification: Reloaded	Cryptography	Superior	675	26
26	Oracle is here	Cryptography	Tulgaaaa	649	27
27	Weakryption	Cryptography	Flame	649	27
28	Broken Cert	Cryptography	Tulgaaaa	504	32
29	MATHrix	Cryptography	zjzoloo	504	32
30	16 bytes: 256-bit primes	Cryptography	Superior	472	33
31	Hash Game	Cryptography	Saruul	472	33
32	Horde's Base	Cryptography	zjzoloo	472	33
33	Khan's Factorization Raid	Cryptography	zjzoloo	472	33
34	Nomad's Key	Cryptography	zjzoloo	472	33
35	Weak Digital Signature	Cryptography	Flame	439	34
36	Italy	Cryptography	unknown	405	35
37	The First Half: Reloaded	Cryptography	Superior	370	36
38	Modular encryption reloaded	Cryptography	Superior	334	37
39	1-р шатны дараа	Cryptography	zjzoloo	259	39
40	Brainrot	Cryptography	unknown	259	39
41	Encryption Standard Advanced	Cryptography	Superior	259	39
42	Hard RSA	Cryptography	Flame	259	39
43	Look Like Long	Cryptography	Tulgaaaa	259	39
44	Nameless	Cryptography	unknown	259	39
45	EncodeManiac!	Cryptography	unknown	180	41
46	Finite Steppe	Cryptography	zjzoloo	180	41
47	Primal	Cryptography	Flame	180	41
48	Weak Mac	Cryptography	unknown	180	41
49	Embrace the randomness	Cryptography	Superior	139	42
50	Pheonix	Cryptography	Flame	139	42
51	r00t	Cryptography	unknown	139	42
52	Reality Security Access	Cryptography	zjzoloo	139	42
53	Kindergarten	Cryptography	zjzoloo	97	43
54	The Scribe's Little Oopsie	Cryptography	zjzoloo	97	43
55	Verification	Cryptography	Superior	97	43
56	Урт тоо	Cryptography	Uzi	97	43
57	Enigmatic	Cryptography	Uzi	54	44
58	Seed of future	Cryptography	unknown	54	44
59	sumPrimes revenge	Cryptography	Tulgaaaa	54	44
60	Favorite number	Cryptography	Superior	10	45
61	IDK	Cryptography	unknown	10	45
62	Warmup 2024	Cryptography	unknown	10	46
63	Шүлэг 2025	Cryptography	dorjoos	10	46
64	are you admin i think nahh	Cryptography	Tulgaaaa	10	47
65	First Blood: Reloaded	Cryptography	Superior	10	47
66	Holy Letter	Cryptography	zjzoloo	10	47
67	roxy-1	Cryptography	unknown	10	47
68	roxy-2	Cryptography	unknown	10	47
69	random	Cryptography	unknown	10	48
70	The First Half	Cryptography	Superior	10	49
71	Шаар	Cryptography	unknown	10	49
72	Checker	Cryptography	unknown	10	50
73	New crypto	Cryptography	Ds3c	10	50
74	Ticket Generator	Cryptography	Bilgee	10	50
75	Scan me	Cryptography	unknown	10	52
76	Modular encryption	Cryptography	Tulgaaaa	10	53
77	Cybercook	Cryptography	Uzi	10	54
78	RSA	Cryptography	TheEyeLid	10	54
79	XOR without X	Cryptography	Superior	10	58
80	Decrypt me: 6	Cryptography	unknown	10	60
81	New -> Old	Cryptography	dorjoos	10	60
82	RSA tutorial	Cryptography	Superior	10	60
83	4r3 Y0u Bl1nd	Cryptography	Uzi	10	61
84	dlugi	Cryptography	unknown	10	62
85	Nightfall	Cryptography	unknown	10	62
86	Really Suspicious Algorithm	Cryptography	Superior	10	64
87	Complete random key	Cryptography	Superior	10	68
88	Just encryption	Cryptography	unknown	10	68
89	unknown key but known	Cryptography	Tulgaaaa	10	68
90	Бие халаалт	Cryptography	Superior	10	69
91	xo \| rorororo	Cryptography	w01f	10	71
92	Number2Text	Cryptography	unknown	10	74
93	sumPrimes	Cryptography	Tulgaaaa	10	79
94	Advanced Encryption Standard	Cryptography	Superior	10	80
95	Crypto analysis	Cryptography	unknown	10	81
96	Alice and Bob Part 2	Cryptography	Ds3c	10	83
97	Crypto Sensei	Cryptography	unknown	10	83
98	Унш унш бас дахин унш	Cryptography	unknown	10	84
99	Юлий Цезарийн төгсгөл	Cryptography	w01f	10	84
100	Dance Dance Dance	Cryptography	unknown	10	85

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