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

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Imported CA certificate to Firefox Browser not working [migrated]

I created Certificate Authority (CA) according to Ubuntu help using openssl. After creating a certificate for Apache2 and adding to certificate to it, I want to import it in Firefox. In the end of ...
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1answer
20 views

How do I request a certificate from CEP / CES on a Microsoft CA on OSX or Linux?

This article describes how to request a certificate from AD CS (Active Directory Certificate Services) from a non-domain joined windows computer. I would think the same principals apply to non ...
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2answers
22 views

Can revoked certificates be “lost” if the base CRL is updated before expiration?

Assumption Suppose I have a CA that issues a base and a Freshest CRL. I also understand the Freshest CRL to be a Delta of revoked certs in the base. I also understand that clients should pull the ...
3
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2answers
92 views

Explicitly prohibit an intermediate CA certificate on OpenSSL

How do you explicitly not trust a particular certificate (especially, CA certificate) for OpenSSL? On NSS-based applications, one can install the cert with trustarg p: prohibited (explicitly ...
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0answers
19 views

Making the Firefox key and CSR creation process transparent

Background I was a bit surprised that several CAs do not allow anymore to send a plain old CSR in text form to them which was created in the classic fashion with OpenSSL or similar. But this would ...
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9 views

What are some scenarios I would use MSFT Certificate Enrollment Web Services?

The Certificate Enrollment Policy Web Service and the Certificate Enrollment Web Service are made for non domain connected machines to retrieve certificates of various kinds. When setting this up, I ...
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1answer
75 views

Clarification needed on CSR signing process

There doesn't seem to be a lot of in-depth information on the certificate signing process other than: Key Management Interoperability Protocol Usage Guide Version 1.2 (PDF) RFC 2986 - PKCS #10: ...
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13 views

List of certificate authorities for opera 9.64 [on hold]

Where do I get a list of certificate authorities for my opera 9.64 I'm looking specifically for an certificate by "Over the Rainbow Tech."
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35 views

Self signed certificates and SBS 2008

I have been researching certificates for the past few days and one of the things I don't understand is how certificates created by SBS (Small Business Server from Microsoft) are validated when trying ...
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4answers
133 views

How safe is SSL on an untrusted computer and network?

In situations where the consumer doesn't trust/control the workstation and the network, can consumer safely do potentially sensitive activities (like making a payment or transferring confidential ...
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3answers
132 views

What part of TLS specifies how to verify a certificate chain

I have sometimes run into a situation where I see a root CA certificate which is set to expire sooner than the intermediate CA certificate. My question is - if you were interested in keeping your ...
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0answers
47 views

How to create a digial signature and verify it through a server [migrated]

I am trying to find out a way to create a digital signature for the employees of my company and place it in a server from where they can retrieve them and attach it with any digital document (Office ...
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1answer
43 views

What is the purpose of the CA-BUNDLE on a webserver?

So I purchase a certificate from DigiCert. The process goes like this: Generate private key and CSR on web server. Submit CSR to DigiCert. Get a signed certificate back as well as their root ...
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1answer
68 views

Why do Certificate Authorites cross-sign each other?

A Certificate Authority (CA) issues digital certificates to certify the ownership of a public key by the named subject of the certificate. What is the rationale for CAs cross-signing each other (i.e. ...
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63 views

Is it possible to trick a CA into signing a certificate by intercepting on SSL domain validation email?

From my understanding domain validation certificate are verified by receiving an email on some special email addresses on the domain (e.g. postmaster@example.com, admin@example.com) or by sending on ...
2
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1answer
95 views

If your company/university requires you to install root certificates what protects you from man in the middle attacks?

Let's say that I'm on a university (or company) network that requires you to install a root certificate to connect to their website. Now let's say that you trust these people but not anybody else. Is ...
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4answers
2k views

Can any CA sign any domain?

Can any CA sign any cert for any domain? If the answer is yes, what prevents having two different CAs creating a valid cert for the same domain? Does that mean that the whole TLS security has the ...
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2answers
121 views

Are there other roots of trust on my computer aside from these 46 root certificates?

I've heard many people imply that modern browsers and OSes trust a myriad of root certificates. The implication is that it is impossible to ensure the private keys of all of the root certificates ...
2
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2answers
81 views

Can CA issue a certificate without CSR?

My question is if the CA can generate a private/public keypair on behalf of the requestor and sign it with its own private key? Is there any standard way or protocol to distribute such a ...
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1answer
41 views

Is client cert authentication with a 3rd party PKI cert any safer than using self-signed?

I am working on a small M2M project (a few hundred nodes connected to a single cloud server), and want to use client certificate authentication, with each client getting its own unique cert at ...
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2answers
61 views

Current standard of authentification

What is the current standard of authentification? I thought it is server and client authentification. But I typed for e.g. https://www.google.com/ and checked the packages in wireshark. And there ...
2
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1answer
36 views

Website Implementing https site w/ self signed certs and CA

Q: How best to handle the issue of security warnings for a website using certificates from its own CA (ie, selfsigned)? I am some what torn on how to do this - I have a number of implementaiton ...
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2answers
57 views

Is there a Standard Verification process for Certificate Authorities to follow?

So the premise of the question is to quantify the risk of wild card certificates versus regular certificates. From my research the greatest fundamental danger of wild card certificates is the ...
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1answer
89 views

Can I create an SSL certificate on windows signed with the machine's certificate?

From MMC > Certificates I can see there's a certificate for the current machine under 'Trusted Root Certification Authorities > Certficates'. e.g. on my workstation called 'RoryWorkstation1' there's a ...
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1answer
38 views

Re-Use Client Certifactes

I have a legacy web application where user are identified and authenticated with client certificates. Now, customer wants to use the same client certificate to authenticate against a newly created web ...
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1answer
55 views

Will Let's Encrypt require SNI from the operators?

I'm curious if anyone knows whether the upcoming Let's Encrypt initiative would effectively require SNI. What I mean is, with the proliferation of the cloud, almost every web-site owner, even with ...
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1answer
49 views

Installing a CA only for specific domains

For many reasons, it's often convenient for organizations to have their own CA (self-signed or otherwise). As I understand it, adding the CA certificate to a OS or browser will make it trust the ...
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45 views

Self-signed certificates, CA and stacking

I have a server running a number of virtual hosts. I have setup as a "self-CA" and then created and signed certs for each of the virtual hosts. In running the SSL labs testing, it always complains ...
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1answer
90 views

Android phone (Kitkat) list A LOTS of CA under setting->security->Trusted credential,

My Android phone (Kitkat) list a LOTS of CA under setting->security->Trusted credential, does it mean that anyone who has accessed to anyone of those private keys of those CA(s) can monitor or do "Man ...
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1answer
116 views

How does “Let's Encrypt” provides authenticity?

https://en.wikipedia.org/wiki/Let's_Encrypt https://en.wikipedia.org/wiki/Information_security#Authenticity AFAIK with "Let's_Encrypt", we could create HTTPS websites with only one command. ...
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2answers
61 views

How do certificates work in protecting against a man-in-the-middle attack? [duplicate]

As I understand it, if Alice and Bob wants to communicate securely, they must first agree on the protocols that will be used. Then they must confirm that they are indeed communicating with each other. ...
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2answers
48 views

Security of certificate when using DNSSEC

When setting up secure server, it is suggested not to use self-signed certs and instead to be signed by a CA. Of course, post-Snowden we now know that there may be problems with CA's that could allow ...
2
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2answers
64 views

Is it possible to use an open collection of default SSL certificates for my browser?

Browsers and OSes come with a set of default SSL certificates for well known organizations, such as root certificates from CAs. I understand that the trust model is as follows: I pick (actually my ...
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42 views

Can't get my SSL CA to work with Apache

So I have an SSL enabled website running on Apache2. https://eamorr.com (I get a warning in my browser, as expected) I have a config file for this website at: ...
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22 views

Setup local Certificate Authority & integrate with SCEP

I want setup local Certificate Authority and issue X.509 certificates under my CA. In order to achieve this I am exploring following options such as: OpenSSL/OpenCA BouncyCastle Cryptographic APIs ...
3
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1answer
59 views

PKI - Why Root CA is in intermediate CA section?

I can't understand why, when I accept to "install" a custom self signed Root CA on IE browser, the root certificate ends up in the "intermediate CA" section, rather than in "Root CA" section in the ...
5
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1answer
104 views

PKI Installation

I must install a PKI in my organization. I work in a windows environment. I already set an offline CA. I must now install a subordinate CA. I have the choice between installing the subordinate CA on a ...
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2answers
43 views

Installing and updating a CA certificate on a client

I am trying to implement a system where a client can download application packages from a server to install/update them on the client. I suppose that the client is something like a platform on an ...
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2answers
185 views

Security of SSL certificates bought via resellers

There are many SSL certificate resellers - some are well known enterprises with good reputation (e.g. domain name registrars) while others are small and unknown companies. It is clear that resellers ...
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1answer
56 views

Is a SSL CA signed certificate necessary when connecting with IP Address?

I'm currently creating a socket server, and would like to encrypt communications. The thing is, the client will connect directly to the ip without any DNS. (Every user will know the Server's IP ...
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1answer
3k views

Why does Windows Ship with Expired SSL Certificates?

I am cleaning up the certificate stores on my Windows machines, and considering which certificates I should keep, and which ones I should delete. Why does a fresh install of Windows Server 2012 R2 ...
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1answer
343 views

Should the thumbprint be SHA2 in addition to the Signature Hash Algorithm?

I'm looking at a Windows PKI and see that the Thumbprint is SHA1, while the Signature is SHA2 (SHA256). Is this an acceptable configuration? Should I recommend that the client update to SHA2 for a ...
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0answers
41 views

Is ADCS overkill just to replace self-signed certs?

Several of our internal applications are either not using SSL certificates, or are using self-signed certificates. I wanted to utilize ADCS to create a trusted, internal-only root CA that our browsers ...
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2answers
88 views

What kind of SSL certificate do I need? [duplicate]

I am making a web site which can be considered similar to Reddit in some ways. I need to implement a sign up form so I will store informations about the users. My idea is to store the username, ...
0
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2answers
50 views

Certificates - What about signing again Intermediate CA certificates?

I an thinking about this issue and it is hard to estimate technical impacts. For any relevant reasons, one want to modify one the x509 field of an intermediate CA. This intermediate CA was signed by ...
0
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1answer
103 views

MITM faking certificates

I am looking at the theory behind MITM attacks in order to see some unencrypted packets from the 3DS. From research here is what I understand so far: 3DS > Proxy > Nintendo server I am going to try ...
3
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3answers
123 views

Corporate PKI - SHA1 deprecation

Here is the context. Suppose you have a corporate PKI with : AC_Root (offline in safe store - SHA1 signature) SubRootA and SubrootB (offline in safe store - SHA1 signature) SubSubRootC, SubSubRootD, ...
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1answer
44 views

Add certificate authority to one browser only

For testing purposes, I'd like to add a "CA" to the list of trusted-CA's of one browser - and use it only for testing. I want to make sure that it won't get added to the computer's trusted CA list. ...
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1answer
136 views

How will SHA1 deprecation affect SHA1 roots in OS/Browser trust stores.

I understand the SHA1 deprecation policy applies to CA's issuing SHA2 end-entity certs and intermediates starting Jan 2017 but how will this policy affect the actual root certificates in OS/Browser ...
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2answers
117 views

Will CA's still validate internal IP's in SSL certs?

Just wondering what Certificate Authority (CA) policy is nowadays on validating someone's internal IP address in a certificate? I have heard that some CA's used to do this but won't anymore.