Consider the following statements:<br/>A digital signature is<br/>1. an electronic record that identifies the certifying authority issuing it<br/>2. used to serve as a proof of identity of an individual to access information or server on Internet<br/>3. an electronic method of signing an electronic document and ensuring that the original content is unchanged<br/><br/>Which of the statements given above is/are correct?

1. Incorrect. A digital signature is not the electronic record identifying the Certifying Authority; that description fits a digital signature certificate, which is issued by the Certifying Authority.

2. Incorrect. A digital signature is mainly used to authenticate an electronic document/transaction, not as a general proof of identity to access an Internet server; that role is closer to authentication credentials or digital certificates.

3. Correct. A digital signature is an electronic method of signing a document that authenticates the signer and helps ensure the content has not been altered.

Therefore, only statement 3 is correct.