Encrypting Volumes

These flashcards summarize key concepts from Chapter 9 on encrypting volumes, covering various encryption modes, methods, risks, and principles of information security.

Full-Disk Encryption

A form of encryption that protects all data on the disk rather than individual files.

Block Cipher

An encryption technique that encrypts data in fixed-size blocks, providing high security for data.

Initialization Vector (IV)

A non-secret random value used in encryption algorithms to ensure that encryption yields different ciphertexts even for the same plaintext.

Reverse Order Decryption

The process of decrypting data by applying the key schedule in the opposite direction to retrieve the original input.

Cipher Block Chaining (CBC) Mode

A block cipher mode that encrypts each block using the previous ciphertext block, providing enhanced security.

Salting

Random data added to create a unique hash that is harder to predict, enhancing security.

Nonce

A unique or pseudo-random number used once in a cryptographic communication, often as part of encryption algorithms.

Triple DES

An encryption technique that applies the Data Encryption Standard three times to each data block to enhance security.

RC4

A stream cipher known for its simplicity and speed, but vulnerable to several attacks.

AES (Advanced Encryption Standard)

A widely used encryption standard that supports key sizes of 128, 192, and 256 bits.

Error Propagation

A phenomenon in block cipher modes where an error in ciphertext may cause errors in the decrypted plaintext.

Key Schedule

A sequence of subkeys derived from the main key used in multiple rounds of encryption.

Key Generation

The process of creating cryptographic keys from a defined method to ensure security.

Tweakable Encryption

An encryption process that incorporates the position of the data block into the encryption to avoid pattern repetition.

Integrity Protection

Measures taken to ensure that the data has not been altered in an unauthorized manner.