Encryption, decryption and authentication can be provided by public key encryption technology, allowing
transfer of mail with privacy. This is achieved by generating two keys. One key is called the "private"
key, this the user of the software holds on to in a safe place. The other key is called the "public" key,
this is transmitted across the internet and stored in a public database which other people can access.
A sender needs to find the user's "public" key in the database to encrypt the message he is sending. The
receiver uses his "private" key to "unlock" the message sent to him. This prevents other people from reading
the mail message because they do not have the "private" key needed to unscramble the electronic mail.
Technology Return Links
Return to the Technology Home Page, or go back to the Computer Privacy Home Page.
Go back to the Electronic Mail Privacy Paper.
English 306 Return Links
Return to the syllabus for general information, go to
the policy statement for student information.