From the course: Security for the SMB: Implementing the NIST Cybersecurity Framework
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Encryption
From the course: Security for the SMB: Implementing the NIST Cybersecurity Framework
Encryption
- [Instructor] Cryptography is one of the most important controls available to information security professionals. It protects sensitive information from unauthorized disclosure and modification throughout the internet. Cryptography depends on two basic operations. The first, encryption, converts information from its plain text form into an encrypted version that is unreadable, known as ciphertext. The second operation, decryption, performs the reverse transformation, taking the encrypted ciphertext back into human readable plain text format. Security uses cryptography for four primary reasons. First is to preserve confidentiality, keeping unauthorized people or systems from seeing your secret data. For example, if Alice and Bob are talking, they can use cryptography to keep anyone else from seeing their secret files. The second goals of cryptography is integrity, which protects messages against unauthorized modification.…
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