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Bob is concerned about the possibility of having his 100k byte file modified without his knowledge, so he calculates a 100 byte hash. Alice, unbeknownst to Bob, changes a single character in Bob's file. Assuming that Bob used a strong hash function, what would the hash value of the modified file look like, as compared with the original hash value? Verify your answer.
Decrypt this message, and briefly describe your cryptanalys is methodology. In particular, list features of the ciphertext that hindered or helped your decryption process.
Using blocks of 4 encrypt the message I AM AN MSC STUDENT MAJORING IN SECURITY using the public key above. Similarly use the private key above to decrypt the cipher text.
What measures would you propose to senior management to try to prevent a breach of data held by GCI? Your response should include recommendations for mitigating vulnerabilities identified in part (a).
Suppose that there is block cipher ABC that always encrypts block of b=72 bits using key of k= 60 bits. Prove that XYZ doesn't give much stronger security than ABC.
Dissect an email you have received. First, get the original, ASCII text of the email, including the headers, and the blank line separating the headers and the body of the email.
A particular cipher is implemented by combining the ASCII representation of plaintext characters with pseudorandom bytes. What is the ciphertext (in binary form) generated by the encryption of the character D?
Deliver a research paper and presentation based on your research - Future threats to network security and planning for those threats
Assume that Alice shares a secret s with her company's server computer. When Alice is on a trip, she tries to store an important message in the CEO's account directory.
The papers should be comprised of a INTRODUCTION, REVIEW OF LITERATURE, DISCUSSION, CONCLUSIONS, and REFERENCES.
Output the string rotated to the right by a user-defined number of characters (0 or more). For example, Hello world!rotated by two characters would be: Hello world.
The size of the frame is long enough to guarantee the detection of collision by both stations. Find: The time when station C hears the collision (t3).
Definitions and descriptions of the terms, 'integrity', 'availability' 'confidentiality', 'authenticity' and 'non-repudiation' in relation to the security protection of information assets in the chosen topic environment, i.e. what is it about thes..
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