All right, this is the last lecture of this wonderful section of cryptography, so let us conclude
this section by starting with certificate authority now, who is a certificate authority?
Certificate Authority is an organization which is use a digital certificate to its user.
So it's the topmost organization in any digital security which has the ability to authenticate a user
based on certain verification of credentials.
So Certificate Authority is one who assumes the identity of a person.
So basically they take some sort of verification and then they issue the digital certificate to the
person stating that, OK, I have identified the person to consider.
We have our friend Bob over here and this is the Certificate Authority right over here.
So Bob wants to get verified from this certificate authority, so in order to get verified and get a
digital certificate from him, he sends his public key to the certificate attardi he will never send
his private key because his private key is his own belonging and he should never share it to anyone,
even even if it's the certificate authority.
Bob sends this public to certificate authority.
National Certificate Authority asks Bob for some verification type things, and once they have verified
Bob, they issue the digital certificate to Bob.
So now Bob has the digital certificate from this authority and therefore Bob can use this digital certificate
for signing different documents.
And so if someone wants to check the legitimacy, so if Bob has to send some documents to Alice, Alice
can simply see if the digital certificate is valid and if it is valid.
She has no option but to trust because after all this digital certificate has been issued by a legitimate
certificate authority, there are many authorities.
There is a hierarchy of authority and will try to include some practical based on digital signatures
as well.
So if you want to know more, stay tuned.
Keep on checking the content.
Every month there will be some sort of new additions as well.
So apart from this, I really enjoyed you teaching this wonderful section.
So I don't know if there are any more lectures in front because my team is constantly working to deliver
new content.
So I'll not say this is the last lecture of the scores, but again, all the very best if it is the
last lecture, all the very best for your future.
And if you have any doubts regarding if you have any doubts regarding eukaryotes, you can always ask
through the Q&A section, I'm free to support you.
All right.
So all the best.
Keep moving forward and keep learning.
It's been a great pleasure teaching you cybersecurity.