A piece of data used in public key cryptography that contains identifying information (i.e. email address or web address), a hash of a public key, and a digital signature that authenticates the data in the certificate.

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Protecting the root ca bundle

Applications (e.g. Firefox) often include a root ca bundle file containing trusted certificates. How can I protect those files from malicious agents trying to modify them? I think signing is not an ...
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26 views

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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21 views

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

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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1answer
41 views

How do SSL certificates become compromised after expiring [duplicate]

I'm reading into security issues surrounding SSL, and one of that has come up is certificate expiration. The general idea is that once a certificate expires, the site is insecure. What is the ...
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2answers
23 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 ...
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13 views

What is the minimum acceptable time for “Freshest CRL” to be updated?

I'm working with MSFT CA, and not sure if this behavior is the same across all CAs, but when I run certutil -CRL, the base revocation cert is updated weekly, and the Freshest CRL (the differential) ...
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3answers
2k views

Superfish vs. Corporate MITM

I work for a consulting company, and I have been implementing a tool from a security vendor, which is a cloud proxy for all user traffic. It will perform malware scanning and filtering of all web ...
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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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0answers
7 views

Can usernames & passwords + client certificates exist in Activesync?

Every Activesync writeup I've seen, by MSFT or 3rd parties seems to encourage the deployment of client certificates with the "require" feature, as opposed to the "Accept/Optional" selection. I want ...
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10 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
41 views

Best practice for https Private Key Generation

I am working with a security person that baffles me a bit with the practices he performs. Besides the issue of this person insisting on bypassing every security measure in place we have got into it ...
2
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1answer
61 views

SSL communication between a C# Server and an Android Client App

I'm using a C# server and a C# tcp client example I extracted from the MSDN and I have created a self signed certificate using makecert.exe. I have got this to communicate with one another and it ...
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1answer
76 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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7 views

Getting Certificate KeyContainerName to initialize CspParameters

How can I get the name of a Key Container that's in a smart card required for initialization of CspParameters? CspParameters^ cspa = gcnew CspParameters(ProviderType, ProviderName, keyContainerName, ...
2
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1answer
44 views

How do Client-specific keys and Certificates work?

I have clients that communicates with my server. Clients sends it unique id (guid) to server with its request over a secure https channel. Also to increase security I use my own private-public key ...
8
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1answer
253 views

Kaspersky Antivirus “secure connection scan” as broken as Superfish?

I've read a lot about Superfish (and similar ad-ware) lately and I basically understand the vulnerability to MITM attacks. But I'm actually wondering if the "secure connection scan" by Kaspersky ...
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0answers
14 views

keytool commands to replace existing SSL certificate? [migrated]

I've a linux centos server running glassfish 3.1.2 app server. The default certs coming from GlassFish install for ports 4848 and 8181 are 1024 bits. I need to replace these with 2048 bits versions. ...
2
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0answers
47 views

How can I restore my Windows certificate cache so I only have those from trusted CAs? [duplicate]

All this talk about Superfish and other adware crap has made me healthily paranoid that a wrong certificate can enter my certificate cache at any time. I have no reason to assume that there is a ...
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14 views

List of certificate authorities for opera 9.64 [closed]

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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1answer
65 views

Create certificate without private key with OpenSSL

I know that OpenSSL requires the CSR to be signed for a reason: to assure CSR validity, the fact that it was requested by the actual private key owner of the attached public key. It is absolutely ...
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2answers
107 views

How to be sure laptop's trusted certificates are safe

I have a Windows 8.1 Lenovo laptop. The evil Superfish app and certificate have been removed. My laptop has 36 certificates in certmgr.msc current user\third-party root certification ...
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0answers
25 views

How to associate an oAuth token with a particular user. Is this possible?

We have HTTP Rest services and SignalR (aka Web sockets, server send events, etc) for cases in which we need to push data from the server to the Web UI . We are currently using the built in tools that ...
1
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1answer
31 views

how to extract a valid digital certificate and put it on other program

I am working on this matter as a graduate, but I need some help. how can extract a valid digital certificate to put it on other program? can I put a digital certificate on other executables and be ...
53
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4answers
6k views

Why was the private key of the Superfish certificate so easily extractable?

Robert Graham detailed on the Errata Security blog how he was able to get the private key of the Superfish certificate. I understand that attackers can now use this key to generate certificates of ...
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0answers
21 views

Additional security for services hosted on a 2FA or Multi-Factor Authenticated Network

I am aiming to lock down a web service that accesses other services and has a publicly facing UI. I have a hosted service on a network that requires 2-factor authentication to access. This service's ...
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0answers
22 views

Certificate advice for deploying code-signed software as a 3rd party vendor

I am in the process of developing an application for an organization, and am looking for a sanity check on my strategy, especially given the the nature of the SuperFish nonsense that was exposed. The ...
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0answers
26 views

How can i know my security level as “ SSL 256 bit encryption” [duplicate]

I am using openssl tool to create certificate self-signed certificate I have known that [2048 bit SSL] it is the length of the public key then what about [256 bit encryption] how can i know type of ...
3
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1answer
32 views

Is it possible to restrict a client-side certificate (for web auth) valid only for a given site name?

If I have 2 websites, a.example.com and b.example.com. Those sites use TLS and SNI, and require client authentication with certificates created with my own CA. The use case is that some clients have ...
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17 views

Proxpy- certificate issue

I am using proxpy, a proxy server written in Python. It comes with its certificates and after installing one of the certificates in Firefox, I got 'Connection is untrusted'. Any help in this regard ...
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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 ...
4
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2answers
85 views

How should I document my Public Key Infrastructure?

I'm preparing to document a 3 tier PKI (with multiple second level policy CAs) and want to create a document that is useful, technical, and not too overwhelming to the non-PKI expert. I suppose the ...
0
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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 ...
2
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1answer
118 views

Intercepting HTTPS Android app traffic

I'm trying to intercept Android application traffic from my Android phone....Basically what worked before was that i had simply installed fiddler proxy on my PC, exported the root certificate (and ...
2
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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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2answers
90 views

How can I set my server to only accept requests from my own client app? (similar to SSL Client Certificates)

I'd like to have my server APIs only accept requests from my own app, to prevent other "rogue" clients of my service. As i understand it, the way to do this would be with a "client certificate" that ...
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2answers
77 views

How do certificates stop this man in the middle attack?

Alice and Bob are trying to set up a secure conversation, but unknown to them in the middle is Eve, who can intercept and modify all packets sent between them. The communication goes as follows: ...
2
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1answer
67 views

Easy explanation of SSL client certificates for a developer

I've been thinking about using client certificates for my web apps, desperately hoping for security-conscious users to put their private key on HSMs so they don't get stolen even if the machine is ...
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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1answer
65 views

Is it possible for a successful domain hijacker to fraudulently use the certificate issued to the real owner of the domain name?

In other words, while visiting https://www.mybank.com, for example, can I always trust the site as long as I click the padlock in the address bar of my browser and find no problem with the ...
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0answers
25 views

SSL certificate for Web App + website [migrated]

I have a WordPress + WooCommerce online store which is hosted on a managed hosting. I just bought non-wildcard SSL Certificate for that online store. I am also developing a CherryPy Python Web App ...
27
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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
62 views

P12 - Extract public part (certificate) without knowing the p12 password

I would like to extract the public part of a revoked P12 which doesn't belong to me. I can't open it with KeyStore Explorer because I am prompted for the password, is it possible with OpenSSL ? The ...
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2answers
123 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
votes
1answer
65 views

Is an SSL/TLS HTTPS certificate 'fingerprinting' attack possible?

If you download a friend's site's unique HTTPS root certificate (independent of default browser-shipped ones), or you simply make a 'permanent exception' to an obscure self-signed cert, in Firefox, I ...
2
votes
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 ...
2
votes
2answers
52 views

Using digital certificates in digital signatures

Please could anybody explain to me how certificates are used with digital signatures? I understand difference between certificates and signatures. It is clear. Digital certificates are used to ...
4
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3answers
38 views

Certificate Issuer is Network Company

I simply want to know if is this normal, abnormal, deceptive, illegal, etc... I am at work. When I bring up a certificate for most domains, I get a very standard certificate. When I bring one up for ...
4
votes
1answer
34 views

Mail Signing Certificate – What are the impacts when revocated?

Suppose I open a signed mail on 1st January 2000, signature is OK. What about this two cases : 1) If next CRL is to be published one week later, I found it strange that it is “probably” valid until ...
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2answers
91 views

Does Renewing SSL certificate change its thumbprint / Fingerprint

I would like to know, if renewing a SSL certificate will change my thumbprint? The certificate has expired. If it can be same then under what conditions can it remain same. Many thanks in advance.
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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 ...