Marcel is at a security conference and wants to learn more about the process of using digitally-generated cyphers to encrypt and decrypt data. Which conference session would be MOST useful to Marcel?

Managing Data at Rest
Creating Digital Signatures
Working with Keys
Front-End Development

Working with Keys

The conference session that would be MOST useful to Marcel, who wants to learn more about the process of using digitally-generated ciphers to encrypt and decrypt data, would be "Working with Keys". This session is likely to cover topics related to encryption algorithms, key management, and the process of using keys to encrypt and decrypt data.

The conference session that would be MOST useful to Marcel, who wants to learn more about the process of using digitally-generated cyphers to encrypt and decrypt data, is "Working with Keys".

Explanation:
1. "Managing Data at Rest": This session would likely cover topics related to securing and protecting data while it is stored and not actively being transmitted or processed. While encryption might be mentioned, it would not specifically address digitally-generated cyphers and their use in encryption and decryption.

2. "Creating Digital Signatures": This session would focus on the process of creating digital signatures to authenticate the integrity and origin of digital documents or messages. It is related to encryption and cryptography, but it does not directly address the use of cyphers to encrypt and decrypt data.

3. "Working with Keys": This session is most likely to cover the process of using digitally-generated cyphers, such as symmetric or asymmetric encryption keys, for encrypting and decrypting data. It would explain the concept of key management, generating and distributing keys, and the encryption/decryption process using these keys. This would provide Marcel with a deeper understanding of using cyphers to protect data.

4. "Front-End Development": This session would focus on topics related to the user interface and design of websites and web applications. It would not directly cover encryption or digital cyphers.

Therefore, the session titled "Working with Keys" would be the most useful for Marcel's specific interest in digitally-generated cyphers for encryption and decryption of data.