Certificate authorities verify the owner information of certificates by signing them.

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8
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1answer
255 views

Why are website certificates secure?

I understand how HTTPS connections work, and I also understand they they require a certificate to know that the secure connection you have is with the right server (and not someone pretending to be ...
3
votes
1answer
1k views

Purpose of certificates signed and trusted by CA

Another newbie question but I just don't get the purpose of certificates signed and trusted by CA. We already have public/private keys, hash functions to sign/encrypt messages so why do we need ...
4
votes
3answers
283 views

Are SSL certificates from a CA necessary for secure communication?

Am I right in thinking that SSL certificates from a CA are purely for identification purposes and serve no purpose in the actual encryption of data? In other words if I were to create a self signed ...
7
votes
2answers
676 views

security of PKI, Certificates, certificate authorities, forward secrecy

I want to understand how certificates add to the security of information exchange. Suppose i have a encrypted bidirectional connection between Alice and Bob, using a public key/private key pair. As ...
1
vote
3answers
774 views

Benefits to using EV certificates with a privately hosted Certificate Authority

For companies that have implemented their own internal CA, is there any benefit to configuring that CA to issue an EV certificate? Do any SSL Proxies (like Bluecoat) mimic the EV certificate of the ...
4
votes
2answers
662 views

How practical is a certificate's “basic constraint” property in protecting my HTTPS / SSL session?

Suppose a leaf node creates a certificate for a different domain, acting as a CA. Do most popular frameworks, or SSL chain validation tools verify the constraints? Are there any I should be ...
4
votes
1answer
432 views

Any non-commercial certificate authority issuer for web applications?

Is there any non-commercial certificate authority capable of issuing valid certificates for web applications? I mean, the certificate must be accepted by browsers, like those of commercial CAs?
16
votes
4answers
3k views

Why does Facebook serve several SSL certificates?

Facebook seems to be alternately serving two SSL certificates, one from DigiCert and one from VeriSign. There are only two reasons for this that I can think of: They're in the middle of a ...
5
votes
3answers
158 views

Guarding against rogue certificates

There has been a lot of news recently about certificates being falsely issued (due to the issuing authority having poor system security!). Apparently the targeted users were mostly Iranians, but it's ...
7
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1answer
3k views

Do I really need all these Certificate Authorities in my browser or in my keychain?

There are lots of strange looking Certificate Authorities in my keychain as well as Firefox. I am sure they are legitimate CAs (as they are the same on my Mac and PC and other computers I checked). ...
15
votes
3answers
1k views

What are the risks of a Certificate Authority hack for 'the average user'?

Recently the DigiNotar CA was hacked, and rogue certificates were issued. Since they also issue certificates on behalf of the Dutch government, the government made a statement about it as well, ...
5
votes
2answers
2k views

What tools exist to help me monitor OCSP certificate validation failures?

The discussion at Why isn't OCSP required by default in browsers? notes that many browsers by default simply ignore failure to check web site TLS certificate revocation status via the Online ...
4
votes
1answer
769 views

OCSP: What is “hackedirl.files.wordpress.com”?

After I ticked that my browser (Firefox) must require OCSP: http://i.stack.imgur.com/UeDXh.png I got a window popped up (several times! And it still pops up.. ~randomly ~about a few 10 minutes): ...
0
votes
2answers
193 views

Create a certificate signing request [closed]

can someone please tell me a few tools that can be used to create a CSR ?