Encrypting data before storage or transmission involves a bit of extra work. This often means that people who ought to be using encryption, instead of relying on the assumption that their data will not be intercepted, fail to do so. But it is also true that some of the people who use encryption are keenly aware of the importance of keeping their information secret.. . .
Encrypting data before storage or transmission involves a bit of extra work. This often means that people who ought to be using encryption, instead of relying on the assumption that their data will not be intercepted, fail to do so. But it is also true that some of the people who use encryption are keenly aware of the importance of keeping their information secret.

Historically, cryptography is a glamorous subject because of its identification with spies, diplomats, and the military. These users of cryptography, particularly the last, know that lives depend on the secrecy of their messages. Thus, they are interested in taking every possible precaution to protect secrecy.

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