Encryption
Encryption is the process by which we take information and convert it into a state that can only be read or modified by designated parties. Encryption relies on keys that are used for encrypting and decrypting information. Sometimes, a single key is used (symmetric encryption), and sometimes, multiple keys are used (asymmetric encryption). Encryption has become very popular in modern security practices and it is used for many purposes beyond the ability to hide information. Through the use of encryption, we can enable several security mechanisms, including:
Information privacy— To keep others from reading data and communications
Information integrity— To ensure no one changes data and communications without our knowledge
Non-repudiation ...
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