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sasc:res:tema1 [2017/03/19 23:40]
dan.dragan [Bonus (4 pct)]
sasc:res:tema1 [2017/03/19 23:46] (current)
dan.dragan
Line 261: Line 261:
 {{:​sasc:​res:​css_enc.png|}} {{:​sasc:​res:​css_enc.png|}}
  
-Decode the following ciphertext: '​74b906c56684a5d250fe68bc09eb7ee55ffd2271b8d07d6c35a41d96e4ada74de4852d031ba080374dce7bbcaafd0a4bd4' ​and knowing that the first bit for both 17 bits and 25 bits LFSRs is 1 and the first 6 bytes of plaintext of the encryption are: '​ENCRYP'​.+Decode the following ciphertext: 
 +<​code>​ 
 +'​74b906c56684a5d250fe68bc09eb7ee55ffd2271b8d07d6c35a41d96e4ada74de4852d031ba080374dce7bbcaafd0a4bd4'​ 
 +</​code>​ 
 +knowing that the first bit for both 17 bits and 25 bits LFSRs is 1 and the first 6 bytes of plaintext of the encryption are: 
 +<​code>​ 
 +'​ENCRYP'​ 
 +</​code>​ 
 + 
 +Please download the skeleton from here: {{:​sasc:​res:​dvd_css.zip|}}
  
sasc/res/tema1.1489959618.txt.gz · Last modified: 2017/03/19 23:40 by dan.dragan
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