Select correct statements regarding asymmetric$-$key encryption methods.

Multiple select question.

Asymmetric$-$key encryption is also called two$-$key encryption.

Asymmetric$-$key encryption is slow and is not appropriate for encrypting large data sets.

Asymmetric$-$key encryption is also called public$-$key encryption.

Asymmetric$-$key encryption method has problems in key distribution and key management. Select the correct definition of a digital signature.

Multiple choice question.

A digital signature is a message digest $($MD$)$ of a document $($or data file$)$ that is encrypted using the document creator$$s public key.

A digital signature is a message digest $($MD$)$ of a document $($or data file$)$ that is encrypted using the document creator$$s private key.

A digital signature is a message digest $($MD$)$ of a document $($or data file$)$ that is encrypted using the document creator$$s hashing key.