A Certificate Authority is the collection of hardware, software, and people responsible for issuing certificates in a hierarchical PKI. CAs may be public, as in SSL / TLS and government IDs, or private, as in corporate infrastructures. The primary responsibility of a public CA is to verify the ...

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3
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2answers
192 views

What's the difference between Comodo Premium and Positive SSL certificates [duplicate]

I'm just about to buy a SSL certificate from Comodo, I've doing a research in many CAs, many of them have this kinda premium certificate, and another like positiveSSL, rapidSSL, and instantSSL. The ...
42
votes
7answers
5k views

Is there any legitimate reason to install yourself as a root CA?

Follow up from comments on another question. Is there any reason as to why you might install yourself as a root CA on your own network? The only reason I can think of is forcing computers in the ...
30
votes
4answers
5k views

Corporate computers have own corporation's cert as trusted CA; should I consider all traffic compromised?

By my admittedly limited understanding of how HTTPS/TLS works, the end user (me) initiates a connection with a remote server which signs every one of its messages with a public key. This public key ...
3
votes
1answer
254 views

Check root certificates and certificate authorities on new PC

First Lenovo was caught shipping Superfish with new PCs, which included a universal self-signed certificate authority, and now Dell has been caught shipping PCs with a similar root certificate. What ...
1
vote
0answers
52 views

Guide on how to create certificates and setup an EAP-TLS on debian [closed]

I need to create an EAP-TLS authentication using a freeradius. Currently I am a working EAp-PEAP setup, it is working fine. However, I now needs to move to an EAP-TLS. For this I need to create some ...
0
votes
0answers
56 views

Mysql SSL handshake: symmetric key exchange with CA or server key?

I have my MySQL database set up to require server and client identify verification, with both presenting their certificates signed by the same CA (mysql user was set up with 'require X509'). ...
3
votes
1answer
76 views

Why does SSL EV certification have a range of encryption (40-128 bit)?

I would like to get SSL-EV certification for my company website. After comparing a list of providers, I am confused by their advertisements. Why do all providers say that their certifications ...
2
votes
1answer
51 views

Which CRL should an intermediate CA crlDistributionPoint contain?

Given a root certificate authority (CA) and an intermediate CA signed by the root: Which CRL should the crlDistributionPoints contain to for the intermediate CA? The root CA's CRL or the ...
1
vote
0answers
153 views

How to import Comodo certificates into Keystore?

I'm trying to create a Keystore. I've already generated a Private Key, generated and sent a certificate request to a CA (Comodo), and I've received a ZIP file from the CA (Comodo) containing four ...
1
vote
1answer
68 views

Self created CA root for client certificates [duplicate]

My company wants to use client certificates for clients on production. We have a HTTPS certificate. As I understand we need a CA root certificate to create client certificates. Question: is it OK if I ...
6
votes
1answer
120 views

S/MIME certificates and “information leakage”

I'm considering getting an S/MIME certificate that verifies my name and email address. I've been trying to ascertain what information "leaks" if I do. The Wikipedia page on S/MIME says: Depending ...
0
votes
2answers
288 views

Creating root CA to issue certificates programatically

I have to generate a self signed root CA and use it to issue to certificates programatically. I am new to security and certificates and I think I am missing some pieces required to make the whole ...
3
votes
1answer
56 views

Two-tier PKI without OCSP?

I am currently in the planning phase of a two tier Windows PKI using this deployment guide, and I am stuck concerning the use of OCSP and the online responder role of ADCS. The guide mandates that ...
14
votes
1answer
429 views

Yubikey / GPG with OpenSSH signed key

I am currently looking into the possibility of using Yubikey (NEO)'s to store the private SSH keys of my users. By searching the internet I've found several places that explain how you can generate a ...
1
vote
1answer
69 views

SSL certs signed by different CA

Have a question on SSL certs signed by different CA. in the past, my web server cert is signed with CA1 and it was also imported into the web app firewall for SSL traffic monitoring. Now, I have ...
30
votes
3answers
9k views

Which CA issued certificate for https://www.google.com

I installed Kaspersky internet Security 2016 on my laptop; in Firefox and Edge the root issuer is Kaspersky Anti-Virus Personal Root Certificate. but in chrome the root issuer is GeoTrust. in my ...
1
vote
1answer
113 views

Automate certificate signing in Linux

In a private network I wish to automate signing for new clients/servers. Something like this: New client is created (dockers & etc) The client create a new private key and a CSR The client send ...
0
votes
0answers
23 views

SCEP CertRep SUCCESS: how many certs are in the response?

I am working on an SCEP implementation (both requester and authority). The project uses JScep as a library. During the communication for a PKCSReq the client receives a CertRep SUCCESS. The draft ...
2
votes
1answer
111 views

SSL Client Authentication Failure

I have a setup where the client wants to make https call to the server. The client has a certificate installed on the machine The trust chain of the cert: Root CA      |----...
8
votes
1answer
150 views

Browser blacklists & the Symantec-Google Certification Debacle

Background: As explained e.g. on this Google company blog, Google writes that: On September 14, around 19:20 GMT, Symantec’s Thawte-branded CA issued an Extended Validation (EV) pre-certificate ...
3
votes
1answer
109 views

Does client Authentication needs the server to have intermediate certificate?

I have a scenario where in the client send send a client certificate issued from trusted root. The path of the client cert is like : Trusted Root |-----Intermediate Issuer |---- ...
2
votes
2answers
61 views

How does Certificate Transparance detect fake or forked logs?

I am trying to understand Certificate Transparency. Let's say I want to snoop on somebody's email. So I go hack or bribe a CA, have them issue a certificate for google.com, and then I present it when ...
6
votes
2answers
159 views

What is the purpose of Intermediate Certification Authorities store in Windows?

Suppose I have CA1 root certificate and two intermediate CA2 and CA3 certificates issued by CA1. Would it pose any security issue if all of the intermediate certificates were installed in the root ...
2
votes
0answers
102 views

Client authentication using the pfx not working

I have a requirement to generate the client certificates(pfx) files from another server certificate which are provided by a CA. Firstly I tested the following based on http://www.jayway.com/2014/09/...
0
votes
1answer
54 views

Long term trust anchor validation

Let's say someone signs a document for long term validation using a certificate issued by a trusted CA. Throughout the following years, the document is timestamped again and again by multiple trusted ...
1
vote
1answer
34 views

Can I have CA with JSSE

Maybe the title isn't correct but what I am trying to understand is... I want to create a certificate for my CA which will be self-signed and then create certificates for my clients and my server. ...
1
vote
1answer
64 views

CRL verification with renewed CA

I would like to understand how is CRL verified and therefore certificate of end entity verified when there is a new certificate and keys of issuing CA renewed. Suppose I have the following setup: ...
0
votes
1answer
98 views

Reliability of Certificate Authorities and Certificates in 2015

I just happened to stumble upon this Article in Netcraft. The article claims that many of the major CAs have given out hundreds of Certificates to false organizations. Are there any truth to these ...
0
votes
2answers
113 views

Where are certificates used to prove identity and why aren't DNS responsible for the job?

I've been reading about how certificates are used to verify the owner of a public key in asymmetric encryption. Right now everything seems really theoretical to me and I'd like to know how this works ...
2
votes
1answer
439 views

Why is google's site identity icon a red lock?

Why does google.com have this icon (see picture) for me? What does it mean? Screenshot: Google.com. There are two lock icons. The top one is RED and the bottom one is green. Screenshot: Google.se. ...
3
votes
2answers
253 views

Is it possible for my employer to replace the root CA on my phone?

I've read about corporate MITM 'attacks' where they replace the root CA on company hardware in order to monitor traffic over SSL that takes place on their network, but is it possible for them to do ...
-2
votes
1answer
255 views

How to dnsspoof against HTTPS

I am doing a dnsspoof PoC, but apparently it doesn't work with HTTPS because of the certificate. Please don't tell me that I have to generate a certificate or send a legitimate certificate, I want ...
3
votes
1answer
131 views

Understanding the signing and verification process through a CA

I have been researching on this topic and I need to understand the exact signing and verification process when made through a trusted CA. From what I understand, this is how it works at a very high ...
3
votes
2answers
123 views

Is it possible to let a fake certificate appear valid by sending fake OCSP responses?

In a MITM-Attack I can exchange the server certificate by one I created on my own with tools like MITMProxy or SSLSplit. But this only works well when I have installed a fake CA cerrtificate in the ...
1
vote
2answers
71 views

is it possible to issue a sub-CA and trust it only?

I'm currently a hobbyist trying to learn more about SSL. If I create my own CA for my virtual servers, and trust that CA on my devices, I can then issue certificates for my virtual servers, and my SSL ...
1
vote
1answer
69 views

What is Autocsr and is it secure?

I read an interesting article about something called autocsr for SSL certs. After reading I still could not figure out how it works. Doesn't generation of CSR happen on my box? The CA won't have ...
0
votes
0answers
122 views

Appropriate uses for wildcard certificates

I have a client that wants to use a single Wildcard certificate purchased from a third party CA for the purpose of Server Authentication when connecting to and from AD LDS using SSL and for routing ...
2
votes
1answer
135 views

Can an Android malware install a SSL/TLS certificate into non-root devices?

Does there exist some standard API that allow an Android malware to download and install a SSL/TLS certificate as RCA, in the default keystore, in non-root devices? I think that this is a very ...
0
votes
1answer
43 views

Certificate format

Analyzing some payload I faced up to one which contains a string like this : VeriSign, Inc.10UVeriSign Trust Network1:08U1(c) 2006 VeriSign, Inc. - For authorized use only1E0CU VeriSign Class 3 ...
12
votes
6answers
3k views

Is it possible for corporation to intercept and decrypt SSL/TLS traffic? [duplicate]

I found there are some companies claim that they offer service that can eliminate SSL/TLS blind spot, such as Blue Coat and Gigamon. Are they talking about some way of decipher the https content (...
5
votes
0answers
141 views

Windows Certificate Services: Is it possible to enroll a SmartCard certificate AND have key archival?

I'm using ACOS5-64 Client Kit, I want to enroll for a certificate with key archival. I tried to do so by duplicating the SmartCard template and checked Archive subject's encryption private key option ...
7
votes
2answers
774 views

How can CloudFlare provide a valid SSL certificate for domains not under its control?

CloudFlare provides a reverse proxy, and it offers SSL support ("flexible", "full", "strict full", and "keyless"). How does CloudFlare manage to get a valid certificate for domains it does not own? ...
1
vote
0answers
54 views

Theory behind certificate for job account

I made it work a job account protected by a certificate in a java spring application but is not that clear to me the minimal steps.(Could you believe that :) I need some theory. Here my steps: ...
1
vote
3answers
598 views

Using self-signed certificates for your mail server

I have read multiple Q&A's on this topic from here and other SE sites. They all mention self-signed certs are not recommended due to MITM attacks. However, I haven't found anything with mention of ...
1
vote
2answers
211 views

Difference between KMS and PKI

While the PKI System deal with digital certificates life cycle and Key Management System (KMS) deal with keys life cycle. What is the the fundamental difference between them? Is it possible to ...
7
votes
2answers
973 views

One website - two different SSL certificates: two different CA's

I have seen multiple questions focusing on multiple certificates for a single domain (e.g.: a.com/example and a.com/example_one). However, what stops an individual from purchasing a certificate and ...
0
votes
0answers
90 views

Certificate policies extension in Root CA and Issuing CA

I am building new CA chain and PKI and I actually don't fully understand how I should include certificate policies (CP) and certificate practice statements (CPS) as extensions and how to work with it ...
0
votes
0answers
63 views

How to secure a service with Mutual SSL Authentication and Intermediary CA?

Given: A working SSL mutual authentication setup (a WCF service hosted in IIS) No Intermediary CA In the current setup any client in the world having a certificate signed be one of the well known ...
3
votes
1answer
68 views

New certificate but what about the keys?

One of our SSL certificates has expired and along with that so has the keys. I have a re-newed certificate but no re-newed keys. The posting Should I change the private key when renewing a ...
5
votes
1answer
91 views

How can I demonstrate that 3 independent root CAs validated my domain?

I am concerned about the hacking of a root CA and want to buy 3 SSL certs from completely different providers who will independently validate my identity. Then at presentation time, I will send all 3 ...