Implementing Non-Repudiation in Cryptography

Which of the following cryptographic concepts would a security engineer utilize implementing non-repudiation? Select two

Out of the given options, which cryptographic concepts are essential for implementing non-repudiation in cryptography?

Answer:

To implement non-repudiation, a security engineer should use hashing and private keys. These concepts, when combined with digital signatures, ensure data integrity and verify the sender's identity, making it difficult for someone to deny involvement in a transaction or communication.

Exploring Cryptographic Concepts for Non-Repudiation

Non-repudiation is an essential aspect of cryptography that ensures a person cannot deny involvement in a communication or transaction. To implement non-repudiation, a security engineer needs to use specific cryptographic concepts.

Hashing: Hashing involves converting data into a fixed-size hash value using a hash function. Hashing, when combined with digital signatures, can provide non-repudiation by ensuring the integrity of the data and verifying the sender's identity.

Private key: A private key is a secret key used in asymmetric cryptography. It is paired with a public key to create a digital signature. A security engineer would use private keys to sign data, ensuring non-repudiation because only the owner of the private key can create the digital signature, which can be verified using the corresponding public key.

Implementing hashing and private keys in cryptography helps in establishing non-repudiation, ensuring that individuals cannot deny their involvement in transactions or communications.