Where parties do not have a shared secret and large quantities of sensitive information must be passed, the most efficient means of transferring information is to use Hybrid Encryption Methods. What does this mean?
A.
Use of public key encryption to secure a secret key, and message encryption using the secret key.
B.
Use of the recipient's public key for encryption and decryption based on the recipient's private key.
C.
Use of software encryption assisted by a hardware encryption accelerator.
Suggested Answer:A🗳️
A Public Key is also known as an asymmetric algorithm and the use of a secret key would be a symmetric algorithm. The following answers are incorrect: Use of the recipient's public key for encryption and decryption based on the recipient's private key. Is incorrect this would be known as an asymmetric algorithm. Use of software encryption assisted by a hardware encryption accelerator. This is incorrect, it is a distractor. Use of Elliptic Curve Encryption. Is incorrect this would use an asymmetric algorithm.
Hybrid encryption methods involve using a combination of both public key (asymmetric) encryption and symmetric encryption. In this approach, a secret key is generated for symmetric encryption, and public key encryption is used to securely transmit or exchange this secret key. Once the secret key is securely shared, it is used for encrypting and decrypting the actual message, which is much more efficient in terms of computational resources and speed compared to asymmetric encryption for encrypting the entire message.
Because large quantities of sensitive information must be passed, the use of Asymmetric keys will make the process too slow. As such, the use of Asymmetric keys to pass the secret key will be a better solution, then use the symmetric keys to pass the large quantities of information.
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