From the course: CompTIA Advanced Security Practitioner (CASP+) (CAS-004) Cert Prep

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Authenticated encryption with associated data (AEAD)

Authenticated encryption with associated data (AEAD)

From the course: CompTIA Advanced Security Practitioner (CASP+) (CAS-004) Cert Prep

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Authenticated encryption with associated data (AEAD)

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- In this lesson, we're going to discuss authenticated encryption with associated data, known as AEAD, and how it's going to be used to provide both authentication and confidentiality to our data. Now, authenticated encryption is a term used to describe a form of encryption that checks the integrity and authenticity of the data it's encrypting. But adding these features, we can now ensure the confidentiality, integrity, and authenticity of our encrypted data. When you hear the term authenticated encryption with associated data or AEAD, you should remember that it adds the ability to check the integrity and authenticity of associated data that is not encrypted. This associated data is also known as AD or additional authenticated data. To have AEAD, you must use an enhanced mode of operation that supports this validation step through each iteration of the block encryption process. For example, AES-GCM or the Advanced Encryption Standard in Galois/Counter mode is an example of an AEAD…

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