FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Ciphertext is encrypted text transformed from plaintext using an encryption algorithm. Ciphertext can’t be read until it has been converted into plaintext (decrypted) with a key.

Detailed explanation-2: -This part of the process is called encryption (sometimes encipherment ). The ciphertext is transmitted to the receiver. The receiver converts the ciphertext message back to its plaintext form. This part of the process is called decryption (sometimes decipherment ).

Detailed explanation-3: -Symmetric, or secret key encryption, uses a single key for both encryption and decryption. Symmetric key encryption is used for encrypting large amounts of data efficiently. 256-bit AES keys are symmetric keys. Asymmetric, or public/private encryption, uses a pair of keys.

Detailed explanation-4: -Full Disk Encryption (FDE) or whole disk encryption protects the entire volume and all files on the drive against unauthorized access. In contrast to FDE, File-Level Encryption (FLE) is an encryption method, which takes place on the file system level, enabling the encryption of data in individual files and directories.

Detailed explanation-5: -A public key is a cryptographic key that can be used by any person to encrypt a message so that it can only be decrypted by the intended recipient with their private key. A private key–also known as a secret key–is shared only with key’s initiator.