Cryptography and Network Security (CS435) Part Twelve (Electronic Mail Security)
Network Security: E-mail Security
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Transcript of Network Security: E-mail Security
![Page 1: Network Security: E-mail Security](https://reader036.fdocuments.in/reader036/viewer/2022082505/56812a47550346895d8d8924/html5/thumbnails/1.jpg)
Network Security: E-mail Security
![Page 2: Network Security: E-mail Security](https://reader036.fdocuments.in/reader036/viewer/2022082505/56812a47550346895d8d8924/html5/thumbnails/2.jpg)
Objectives
• To learn to use e-mail security tools– PGP
• To learn the availability of email security libraries– S/MIME
![Page 3: Network Security: E-mail Security](https://reader036.fdocuments.in/reader036/viewer/2022082505/56812a47550346895d8d8924/html5/thumbnails/3.jpg)
Packages & Libraries in this Lab
• Packages– GPG4win: for Windows
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Experiment Scenario
• Signing/verification of files using certificates– Create a new certificate– Encrypt/sign emails – Encrypt/sign the file “original.txt” into another file
“enc.txt” (using sender’s certificate)– Then, we decrypt/verify it and get another file “dec.txt”
(using sender’s certificate), and check if the decrypted file is the same as the original file
• Sending/receiving e-mails with certificates– Set up email account– Read mails– Send mails
![Page 5: Network Security: E-mail Security](https://reader036.fdocuments.in/reader036/viewer/2022082505/56812a47550346895d8d8924/html5/thumbnails/5.jpg)
GPG4win
• Homepage: http://www.gpg4win.org/
• Latest version: 2.1.0
• OpenPGP: an open standard for e-mail security (RFC 4880) – S/MIME also included
• Installation steps:– Simply follow the instructions on screen
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Other Tools Included in GPG4win
• Kleopatra: GnuPG certificate manager– New certificate– Encrypting/Signing a file– Decrypting/Verifying a file
• Claws Mail: a mail reader– Setting up your mail account– Reading mails– Sending mails
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Microsoft Outlook Support in GPG4win
• PGP for Outlook– GpgOL 1.0 can support OpenPGP and
S/MIME
![Page 8: Network Security: E-mail Security](https://reader036.fdocuments.in/reader036/viewer/2022082505/56812a47550346895d8d8924/html5/thumbnails/8.jpg)
Configuring Outlook for S/MIME
• Configure Your Personal Email Certificates• Send a Signed Message• Read a Signed Message• Check the Credentials of a Signed Message• Send an Encrypted Message• Read an Encrypted Message• Get Certificates for Other Users
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Summary
• Email security– PGP– S/MIME