00:01
Hello everyone.
00:02
So in this question we have to tell that the security and usefulness of a digital signature depends upon the four options are given.
00:10
So let us first understand what is a digital signature? digital signature.
00:25
So a digital signature is a mathematical scheme that is used to verify the authenticity and integrity of message or digital doctor.
01:03
So it involves using a private key to encrypt hash value of the message.
01:34
Now this can be verified using the corresponding, this is verified using its corresponding public key.
01:47
So the private key is kept secret by the signer and is used to sign the message while the public key is made available to the others to verify the signature.
01:56
So the security and usefulness of a digital signature depends primarily on the protection of private key.
02:11
So if the private key is compromised, an attacker could force a digital signature and impersonate the signer.
02:17
Therefore, it is essential to protect the private key by storing it securely and not sharing it...