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Engineering
Computer Engineering
Which technique (cryptography or steganography) is used in each of the following cases for confidentiality? A student writes the answers to a test on a small piece of paper, rolls up the paper, and inserts it in a ball-point pen, and passes the pen to another student. To send a message, a spy replaces each character in the message with a symbol that was agreed upon in advance as the character’s replacement. A company uses special ink on its checks to prevent forgeries. A graduate student uses watermarks to protect her thesis, which is posted on her website.

Which technique (cryptography or steganography) is used in each of the following cases for confidentiality? A student writes the answers to a test on a small piece of paper, rolls up the paper, and inserts it in a ball-point pen, and passes the pen to another student. To send a message, a spy replaces each character in the message with a symbol that was agreed upon in advance as the character’s replacement. A company uses special ink on its checks to prevent forgeries. A graduate student uses watermarks to protect her thesis, which is posted on her website.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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  1. Which technique (cryptography or steganography) is used in each of the following

cases for confidentiality?

  1. A student writes the answers to a test on a small piece of paper, rolls up the

paper, and inserts it in a ball-point pen, and passes the pen to another student.

  1. To send a message, a spy replaces each character in the message with a symbol

that was agreed upon in advance as the character’s replacement.

  1. A company uses special ink on its checks to prevent forgeries.
  2. A graduate student uses watermarks to protect her thesis, which is posted on

her website.

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