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Bob believes that he has come up with a nifty hash function. He assigns a numeric value VChar to each letter in the alphabet equal to the letter's position in the alphabet, i.e., VA = 1, VB = 2, ..., VZ = 26. For a message, he calculates the hash value H = (VChar 1 x VChar 2 x VChar 3 ...x VChar N) mod(26). Bob uses this function to send a one-word message, PLANE, to his banker Bill, along with his calculated hash value for the message. Alice is able to intercept the message, and generates an alternative message that has a hash value that collides with Bob's original hash value. Show a message that Alice may have spoofed, and demonstrate that its hash value collides with Bob's original hash.
Research current security trends, countermeasures, and threats. What will be the most threatening security issues firms have to deal with within the next five years?
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.
What RC4 key value will completely invert S after the initial permutation (so that S[0] = 255, S[1] = 254, ..., S[254] = 1, S[255] = 0)? Show your work. (Explain how you got this.)
Explain Cross Site Scripting attack
Organization that severely lacks in appreciating the need for security or a company that depends on equipment that is outdated and services from contractors that are low quality? Why?
If you receive the ciphertext message YPHDCRPBEQTAA, decrypt to recover the plaintext. What is the decryption function, and the recovered plaintext? What type of cipher is this?
block cipher and a stream cipher, Caesar cipher, cryptanalytic attacks, mono alphabetic cipher and a poly alphabetic cipher, Mix Columns, Add Round key, PGP services, traffic padding, contrast link and end-to-end encryption
Based on the article by Lenning (2005), determine a primary security risk that users must acknowledge when using macros? Why is it significant to educate users of these risks once their dilemma is resolved?
What are the many groups of people who are involved with computer security? Name the groups and elaborate on their functions.
The Internet evolution is and is very fast and the Internet exposes the connected computers to attacks and the subsequent losses are in rise.
Why would a variation of RSA encryption/decryption where a single prime number is used the modolus insecure? How can someone recover a message x from the encrypted value.
TCO C states "Given a computer network for data transmission, identify and analyze possibilities for loss or modification of data. Write down the vulnerabilities of RPC? What are the present methods of securing RPC?
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