Confidentiality, Integrity, and Authenticity
Cryptographic methods protect for confidentiality, authenticity, and integrity. Authenticity is proving who you are, and integrity is protecting the data from unauthorized changes. By reading this article you should be able to explain the concepts of confidentiality, authenticity, and integrity. What cryptographic methods can be used to provide for all three concepts?
Secure communication is quickly becoming the norm for today's web. In July 2018, Google Chrome plans to start showing "not secure" notifications for all sites transmitted over HTTP (instead of HTTPS). Mozilla has a similar plan. While cryptography is becoming more commonplace, it has not become easier to understand. Let's Encrypt designed and built a wonderful solution to provide and periodically renew free security certificates, but if you don't understand the underlying concepts and pitfalls, you're just another member of a large group of cargo cult programmers.
Source: Alex Wood, https://opensource.com/article/18/5/cryptography-pki
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