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encryption
(redirected from Cyphertext)

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
encryption
The manipulation of data to prevent accurate interpretation by all but those for whom the data is intended. Financial institutions use encryption to increase the security of data transmitted via the Internet.


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In theory, only the person or machine doing the scrambling and the recipient of the cyphertext know how to decrypt or unscramble the data since it will have been encrypted using an agreed-upon set of keys.
A key is a mathematical value that determines how a plain text message is encrypted to produce a cyphertext, and its possession is required to decrypt the cyphertext and recover the original message.
In theory, only the person or machine doing the scrambling and the recipient of the cyphertext know how to decrypt or unscramble the data since it will have been encrypted using an agreed-upon set of keys.
 
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