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Level II Challenges

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Challenge "Kaskade-S/T — Part 5"
By: admin on May 5, 2011, 10:35 a.m.
3
18646
By: madness  
Aug. 25, 2022, 8:12 p.m.
Challenge "The T52 Sturgeon Challenge — Part 1"
By: admin on July 13, 2019, 11:11 p.m.
10
3111
By: seafischer  
June 30, 2022, 5:04 p.m.
Challenge "Heartbleed — Part 3"
By: admin on Aug. 28, 2014, 2:35 p.m.
5
7135
By: robot.txt  
May 17, 2022, 8:46 a.m.
Challenge "Keyshanc — Part 2"
By: admin on May 21, 2012, 8:52 p.m.
1
9616
By: RandyWaterhouse  
May 5, 2022, 1:09 p.m.
Challenge "The SZ42 Challenge — Part 3"
By: admin on Aug. 15, 2020, 9:26 p.m.
2
960
By: RandyWaterhouse  
March 15, 2022, 7:07 a.m.
Challenge "Not-so-Secret Message from Malawi — Part II (ECC)"
By: admin on May 15, 2010, 1:08 p.m.
10
27112
By: DarkFibre  
March 10, 2022, 7:55 p.m.
[  Go to the page:  1, 2  ]
Challenge "Enigma Part 1"
By: admin on Aug. 17, 2010, 12:27 p.m.
23
47894
By: RandyWaterhouse  
Nov. 24, 2021, 10:16 a.m.
Challenge "AES ECB Wrong Encoding"
By: admin on Dec. 16, 2017, 7:21 p.m.
1
1892
By: Javantea  
Nov. 20, 2021, 1:23 a.m.
Challenge "The SZ42 Challenge — Part 13"
By: admin on Oct. 6, 2021, 11:51 a.m.
0
684
By: admin  
Oct. 6, 2021, 11:51 a.m.
Challenge "The SZ42 Challenge — Part 12"
By: admin on Oct. 6, 2021, 11:47 a.m.
0
627
By: admin  
Oct. 6, 2021, 11:47 a.m.
Challenge "SIGABA CSP-2900 — Part 2"
By: admin on July 31, 2021, 5:58 p.m.
0
642
By: admin  
July 31, 2021, 5:58 p.m.
Challenge "SIGABA CSP-2900 — Part 1"
By: admin on July 31, 2021, 5:47 p.m.
0
689
By: admin  
July 31, 2021, 5:47 p.m.
Challenge "SIGABA CSP-889 — Part 2"
By: admin on June 1, 2021, 1:35 p.m.
0
674
By: admin  
June 1, 2021, 1:35 p.m.
Challenge "SIGABA CSP-889 — Part 1"
By: admin on June 1, 2021, 1:18 p.m.
0
701
By: admin  
June 1, 2021, 1:18 p.m.
Challenge "The LoRa Cipher: Logic Randomness — Part 1"
By: admin on Feb. 19, 2020, 8:31 p.m.
12
3440
By: Theofanidis  
May 26, 2021, 10:02 p.m.
Challenge "Wheatstone Cryptograph — Part 2"
By: admin on May 21, 2021, 3:10 p.m.
0
979
By: admin  
May 21, 2021, 3:10 p.m.
Challenge "Spanish Strip Cipher — Part 2"
By: admin on March 27, 2014, 2:44 p.m.
6
6081
By: tryone144  
May 7, 2021, 4:04 p.m.
[  Go to the page:  1, 2, 3  ]
Challenge "AES key — encoded in the machine readable zone of a European ePassport"
By: admin on Jan. 16, 2012, 7:05 p.m.
35
63119
By: madness  
April 17, 2021, 7:14 p.m.
Challenge "Factorization Cipher — Part 3"
By: admin on Jan. 6, 2012, 1:11 p.m.
11
30406
By: Veselovský  
April 16, 2021, 12:33 p.m.
Challenge "The SIGABA Challenge — Part 1"
By: admin on Feb. 29, 2020, 12:29 p.m.
3
1411
By: Greko  
April 13, 2021, 8:34 p.m.
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