7.1 Cryptography

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St. Petersburg College *

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1358

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Computer Science

Date

Dec 6, 2023

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pdf

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2

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11/4/23, 10:42 PM TestOut LabSim https://labsimapp.testout.com/v6_0_574/index.html/productviewer/1187/7.1/bb1b0e6b-1eef-441b-9b72-add60baba022 1/2 7.1 Cryptography As you study this section, answer the following questions: What is the di±erence between symmetric and asymmetric encryption? Which algorithms can be used to generate a hash? What does a digital signature provide? What is a legitimate use for steganography? What are uses of blockchain in addition to cryptocurrency? What type of attack uses a large list of common words and phrases? In this section, you will learn to: Crack a symmetric encryption key. Use steganography to hide a ²le. Key terms for this section include the following: Term De±nition Cryptography The science and study of concealing information. Cipher/algorithm The process or formula used to encrypt a message or otherwise hide the message's meaning. Encryption key A string of bits randomly generated using a speci²c cipher. An encryption key is used to encrypt or decrypt data. Plaintext The readable form of a message. Ciphertext The encrypted form of a message that is readable only by those for whom the message is intended. Encryption The process of using an algorithm or cipher to transform data from cleartext to ciphertext in order to protect the con²dentiality, integrity, and authenticity of the message. Decryption The process of converting data from ciphertext into plaintext. Steganography The practice of concealing a ²le, message, image, or video within another ²le, message, image, or video. Blockchain A decentralized and distributed ledger of transactions between two or more parties. Blockchain uses cryptography to keep sensitive data secure. This section helps you prepare for the following certi²cation exam objectives:
11/4/23, 10:42 PM TestOut LabSim https://labsimapp.testout.com/v6_0_574/index.html/productviewer/1187/7.1/bb1b0e6b-1eef-441b-9b72-add60baba022 2/2 Exam Objective TestOut Security Pro 4.0 Data Security 4.2 Implement Encryption Technologies CompTIA Security+ SY0-601 2.8 Summarize the basics of cryptographic concepts Copyright © 2023 TestOut Corp. Copyright © The Computing Technology Industry Association, Inc. All rights reserved.
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