COMPUTER FUNDAMENTALS

Detailed explanation-1: -Encryption takes plain text, like a text message or email, and scrambles it into an unreadable format-called “cipher text.” This helps protect the confidentiality of digital data either stored on computer systems or transmitted through a network like the Internet.

Detailed explanation-2: -Encrypting information protects files from breaches in confidentiality, but the risks of unauthorized or accidental modification (including destruction) and/or denial of use are still real.

Detailed explanation-3: -It guarantees none of the 3 cryptographic properties of confidentiality, integrity, and authenticity because it involves no secret and is completely reversible. Encoding methods are considered public and are used for data handling.

Detailed explanation-4: -Symmetric ciphers, also referred to as secret key encryption, use a single key. The key is sometimes referred to as a shared secret because the sender or computing system doing the encryption must share the secret key with all entities authorized to decrypt the message.