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Level II Challenges

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Challenge "Holographic Encryption — Part 1"
By: admin on April 7, 2017, 10:25 p.m.
14
6113
By: madness  
Sept. 6, 2022, 12:58 a.m.
Challenge "Hill Cipher"
By: admin on Sept. 4, 2022, 10:11 a.m.
0
89
By: admin  
Sept. 4, 2022, 10:11 a.m.
Challenge "Alberti Challenge - Part 2"
By: admin on May 14, 2022, 12:22 p.m.
6
403
By: RandyWaterhouse  
Sept. 1, 2022, 7:04 a.m.
Challenge "Kaskade-S/T — Part 5"
By: admin on May 5, 2011, 10:35 a.m.
3
18145
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
1882
By: seafischer  
June 30, 2022, 5:04 p.m.
Challenge "Heartbleed — Part 3"
By: admin on Aug. 28, 2014, 2:35 p.m.
5
6455
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
9307
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
529
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
26003
By: DarkFibre  
March 10, 2022, 7:55 p.m.
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Challenge "Enigma Part 1"
By: admin on Aug. 17, 2010, 12:27 p.m.
23
45583
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
1527
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
421
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
373
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
385
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
448
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
446
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
445
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
2023
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
711
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
5236
By: tryone144  
May 7, 2021, 4:04 p.m.
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