week4 case study4 - Alireza Ghoorchian Week 4 Case study In...

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Alireza Ghoorchian Week 4 Case study In cryptography, encryption is the process of transforming information using an algorithm (called cipher) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information (in cryptography, referred to as cipher text). In many contexts, the word encryption also implicitly refers to the reverse process, decryption (e.g. “software for encryption” can typically also perform decryption), to make the encrypted information readable again (i.e. to make it unencrypted). Militaries and governments to facilitate secret communication have long used encryption. Encryption is now commonly used in protecting information within many kinds of civilian systems. For example, the Computer Security Institute reported that in 2007, 71% of companies surveyed utilized encryption for some of their data in transit, and 53% utilized encryption for some of their data in storage. [1] Encryption can be used to protect data "at rest", such as files on computers
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week4 case study4 - Alireza Ghoorchian Week 4 Case study In...

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