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All right, this is the last lecture of this wonderful section of cryptography, so let us conclude



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this section by starting with certificate authority now, who is a certificate authority?



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Certificate Authority is an organization which is use a digital certificate to its user.



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So it's the topmost organization in any digital security which has the ability to authenticate a user



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based on certain verification of credentials.



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So Certificate Authority is one who assumes the identity of a person.



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So basically they take some sort of verification and then they issue the digital certificate to the



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person stating that, OK, I have identified the person to consider.



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We have our friend Bob over here and this is the Certificate Authority right over here.



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So Bob wants to get verified from this certificate authority, so in order to get verified and get a



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digital certificate from him, he sends his public key to the certificate attardi he will never send



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his private key because his private key is his own belonging and he should never share it to anyone,



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even even if it's the certificate authority.



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Bob sends this public to certificate authority.



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National Certificate Authority asks Bob for some verification type things, and once they have verified



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Bob, they issue the digital certificate to Bob.



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So now Bob has the digital certificate from this authority and therefore Bob can use this digital certificate



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for signing different documents.



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And so if someone wants to check the legitimacy, so if Bob has to send some documents to Alice, Alice



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can simply see if the digital certificate is valid and if it is valid.



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She has no option but to trust because after all this digital certificate has been issued by a legitimate



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certificate authority, there are many authorities.



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There is a hierarchy of authority and will try to include some practical based on digital signatures



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as well.



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So if you want to know more, stay tuned.



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Keep on checking the content.



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Every month there will be some sort of new additions as well.



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So apart from this, I really enjoyed you teaching this wonderful section.



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So I don't know if there are any more lectures in front because my team is constantly working to deliver



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new content.



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So I'll not say this is the last lecture of the scores, but again, all the very best if it is the



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last lecture, all the very best for your future.



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And if you have any doubts regarding if you have any doubts regarding eukaryotes, you can always ask



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through the Q&A section, I'm free to support you.



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All right.



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So all the best.



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Keep moving forward and keep learning.



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It's been a great pleasure teaching you cybersecurity.