Chapter 3: A Cryptography Primer
Abstract
Cryptography should be considered for data that is sensitive, has a high value, or is vulnerable to unauthorized disclosure or undetected modification during transmission or while in storage. Cryptographic methods provide important functionality to protect against intentional and accidental compromise and alteration of data. Some cryptographic mechanisms support confidentiality during communications by encrypting the communication before transmission and decrypting it at receipt. These methods also provide file/data confidentiality by encrypting the data before placement on a storage medium and decrypting it after retrieval from the storage ...
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