Principles of Information Security (MindTap Course List)
6th Edition
ISBN: 9781337102063
Author: Michael E. Whitman, Herbert J. Mattord
Publisher: Cengage Learning
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Expert Solution & Answer
Chapter 8, Problem 3E
Explanation of Solution
Symantec Desktop Email Encryption:
Symantec is software, which provides the end-to-end email cryptography used to encrypt and decrypt emails between the users. It is based on the open Pretty Good Privacy (PGP) technique.
Download the “Symantec” software and install the trial version using the following steps:
Search “Symantec Desktop Email Encryption” in web and fill the basic form then click the “submit” button.
Screenshot of Symantec Desktop Email Encryption
After submitting the form, the following page will be opened to download the trial version.
Screenshot of Symantec Desktop Email Encryption
Download the selected files as shown below screenshot.
Screenshot of Symantec Desktop Email Encryption
Expert Solution & Answer
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Vigenere Cipher By finding the key length in worksheet 7 .doc, you can use frequency analysis for each letter of the key in the cipher to find the particular shift and find the key word. Using the keyword you found, decrypt the following text. Enter your answer with no spaces. (Not case sensitive) ciphertext to decrypt: UHBRXATCBSZ
UHFK PSUG NPPP UAOR UHJL HTPP FAMG AEBZ PUUR IEWG HEOC SEDG QESG TTIY UTIC TEDS SIUW DONC TDPU OTPI FEQG OGUF FKFW MEOE UHBQ FCSC U.IGR IELC ZLFL HTIA BNCC EEUC SMJL FDUF FNPL FITY CLFR PDPY GRFO VE OA ZAOY MYTG TOOR IEGG SSU.Q FCPL E,TIG SD,FR DLFR UESM GTIC LEZ.Z BBCY HEXY TACJ FTPZ SEBI WIHC OESC CYGG ODJL HGBN TOGY GIYC ELFL HTIZ FTXC FNDM NMPL QHSY TETM SWPP ES.PL DEIC IAEY OUNZ FRPD UHFQ F.HFI OEXR IELC ZLFL HTIK VSUZ FADM NMPL EIWG TOSM GAMJ PFUF FSFE BPT.D PRFV BMQJ FIGF FOCQ FRWC EGBN TOGD PRUW. UWFL UYGG WEBL EFJD UEFL, UHFL JTXY TLJI FLZR IELC ZHBB MEOE UHPD GIWC. XIUF UHJQ PBTC SVBR JOOR IETC DUSG UYPD UHJQ QASR JCVJ BRDP ZPUM TYTR FMXY TLPQ UFPP…
Chapter 8 Solutions
Principles of Information Security (MindTap Course List)
Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Prob. 19RQCh. 8 - Prob. 20RQCh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - Prob. 3ECh. 8 - Prob. 4ECh. 8 - Prob. 5ECh. 8 - Prob. 1CEDQCh. 8 - Prob. 2CEDQCh. 8 - Prob. 1EDMCh. 8 - Prob. 2EDM
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- Given the Vigenère ciphertext below, what is your best guess for the key length and why IGDLK MJSGC FMGEP PLYRC IGDLA TYBMR KDYVY XJGMR TDSVK ZCCWG ZRRIP UERXY EEYHE UTOWS ERYWC QRRIP UERXJ QREWQ FPSZC ALDSD ULSWF FFOAM DIGIY DCSRR AZSRB GNDLC ZYDMM ZQGSS ZBCXM OYBID APRMK IFYWF MJVLY HCLSP ZCDLC NYDXJ QYXHD APRMQ IGNSU MLNLG EMBTF MLDSB AYVPU TGMLK MWKGF UCFIY ZBMLC DGCLY VSCXY ZBVEQ FGXKN QYMIY YMXKM GPCIJ HCCEL PUSXF MJVRY FGYRQarrow_forwardWhich encryption benchmark ensuresdata is not modified after it’s transmittedand before it’s received?arrow_forwardIs it possible to encrypt the connection as well as the data from beginning to end?What benefit does this bring?Give an example of a case where any type of encryption might be beneficial.arrow_forward
- Provide an example of when it might be necessary to keep a false login active. In other words, you should be familiar with a wide variety of authentication methods. Are passphrases becoming obsolete?arrow_forwardAn underground resistance group wants to write articles with completely differ- ent security goals. The resistance group shared a secret at the last resistance meeting that they can all use for these articles. Here are their goals: Only users with the shared secret should be able to upload to the server. Only users with the shared secret should be able to read the articles. Any changes to the article should still be easily detectable The resistance is paranoid about both quantum computers and any mod- ern encryption algorithms so they want to avoid public key cryptography. They only trust AES (symmetric key encryption) and SHA-256 (crypto- graphic hashing) since these have been around for decades and are resistant to quantum computers. Write a protocol for the underground paper to authenticate authors before publishing to the server. (HINT: Make sure that this protocol cannot be tricked by someone who has been listening to the previous article upload) Write a protocol for the server…arrow_forwardA cell-phone two-factor authorization is an example of using _____ to authenticate the user. Select one: a. something the user knows b. something the user has c. something the user is d. something the user doesarrow_forward
- Answer the question at the end of section 6, "How?" That is, recall that node2 logged into ftp on node4 and somehow node1 figured out the user password given by node2. How?arrow_forwardPlease answer all parts of the question 2. For the given plaintext: “thechildrenlearntocipherandsing” and cipher mentionedbelow, find the ciphertext: a. Key = 5 for Rail Fence cipherb. Key = 4 (number of rows) for Transposition cipherc. Key = 3 for Rail Fence cipherd. Cipher text is circular shift RIGHT by 2 positions• For example: circular shift right by 1 position: leftmost bit in the ciphertextis the same as rightmost bit in the plaintexte. Cipher text is logical shift left by 2 positions• Logical shift left by 1 position: Rightmost bit becomes ‘0’.arrow_forwardIn terms of the amount of encryption operations required to send a big file, compare cypher block chaining to cypher feedback mode. Which one is more efficient, and how much more so?arrow_forward
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