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Question :
For the remaining questions, consider a 4-bit block cipher, described in hexadecimal by the following table:
Plaintext
Ciphertext
0
a
8
e
1
c
9
d
2
f
3
6
b
7
4
5
You can think of this as a simple substitution cipher for hexadecimal digits. There is no "key" other than the table itself.
For this question, you will perform encryption and decryption using the same cipher described above, but in CBC mode. Recall that you can convert hexadecimal digits to binary to do the XOR operation.
Encrypt the 4-block message face using the above block cipher in CBC mode with an IV of 6 (0110 in binary).
Decrypt the message 2d21 using the above cipher in CBC mode with an IV of 6
Discuss tools and techniques for removing Malware using the text Internet, and/or your job as reference for full credit. Discuss some steps required to harden a Microsoft Workstation using a product of your choice.
decrypt the ciphertext message uw dm nk qb ek which was encrypted using the digraphic cipher that sends the plaintext
This assignment is designed to test your understanding of computer networks through problem solving, literature study, simple analysis and problem solving.
assessment item 2 ltbrgtenterprise architect3939s bog amp swot analysis ii ltbrgtvalue 35 ltbrgtdue date 04-oct-2014
Describe the features of telecommunications networks
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Define the mobile device security requirements. Define the secure protocol implementation requirements, propose a solution, and justify the solution.
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Why are SCADA systems particularly vulnerable to cyber treats? C. Using the X.805 security framework as a reference, discuss the SCADA security requirements for an electric, water or oil refinery enterprise.
You will be required to restore the scrambled bits to their original order and copy the plain text in your assignment. Describe the process used in restoring the scrambled bits and insert plain text in the assignment
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