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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65 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 ...
2
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2answers
109 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 ...
2
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1answer
584 views

certificate authentication between apps

I have a .NET MVC Application which is hosted in IIS. Users of the Application will be company only and it will be access so it will be on the intranet - app wont be exposed via internet. Within IIS I ...
2
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1answer
63 views

Can javascript code served by a server under HTTPS talk to another server under a subdomain with a different certificate?

Lets assume we have two servers : (1) https://adomain.com (2) https://abc.x.adomain.com The each have different certificates, (2) has a wildcard and (1) does not. If we remove https from the ...
2
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1answer
963 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 ...
2
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1answer
2k views

Is keystore file(server.jks), my private key file?

My task is to convert .p7b to .pfx. It would be great, if you could provide me some pointers. Below are the steps I did to generate .p7b file. I generated jks(java keystore) file using below ...
2
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1answer
270 views

Certificate pinning in a browser

I am trying to understand certificate pinning. Google started adding a whitelist of CA certs that they use for their certificates and if a cert for a google service is issued outside of this list ...
2
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2answers
627 views

Certificate authority structure - best practices

I'm working for a company that sells software products to customers some of which do not have the resources and/or know-how to build and maintain their own CA (used for the SSL communication of our ...
2
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1answer
849 views

“global” OCSP with Apache mod_ssl / Alternative to -VAfile option Openssl

Context I'm developping my own OCSP responder which signed its ocsp responses with its own self signed certificate caOcspBC.crt. You can find it here : https://github.com/Dinou/ocspResponder I want ...
2
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1answer
516 views

What's the use of certificate on Load Balancer and Keystore on Service?

Consider a scenario where my service is using a keystore made of self signed cerificate and the load balancer which is balancing traffic for service is binded with a CA approved certificate. I would ...
2
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1answer
131 views

Does using Chrome bypass the Apple iOS gotofail bug ?

Does the recent certificate gotofail bug affect me if I'm running version 6 of iOS, but only use Chrome as my browser?
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1answer
1k views

What is the difference between `extendedKeyUsage` and an application policy?

In some Microsoft articles like http://technet.microsoft.com/en-us/library/cc731792%28v=ws.10%29.aspx, I find some confusing statements like Application policies are sometimes called extended key ...
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1answer
253 views

how does OpenSSL create X.509 certs from SPKACs?

The SPKAC ASN.1 description: PublicKeyAndChallenge ::= SEQUENCE { spki SubjectPublicKeyInfo, challenge IA5STRING } SignedPublicKeyAndChallenge ::= SEQUENCE { publicKeyAndChallenge ...
2
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1answer
166 views

How can I determine if a CA Cert can be used for DPI-SSL

I would like to know if a CA Cert I installed can be used to perform DPI-SSL decryption without my knowledge. Would there be any indication? Can you look at the cert properties to determine if it can ...
2
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2answers
676 views

Code Signing: Change certificate attributes during renewal?

I'm quite new to code signing and could not find clear answers to the following general questions so far. It would be great if someone could clarify/explain the logic behind this and point me in the ...
2
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1answer
146 views

Curious about best start for autoresponding Certificate Authority (CA)

I am just getting started trying to implement some internal PKI ideas, where my app would need a cert to 'sign' messages. Since this is all completly internal, we have some degree of trust, and I ...
2
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2answers
171 views

Using External Certificates on a network that doesn't permit outbound HTTP/S access

Some highly secure networks and DMZs prevent all communication to outside hosts. This can cause issues with validating externally signed data I can guess that issues with signature validation occur ...
2
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1answer
398 views

Does iOS use built-in certificates to authenticate peers when using ipsec VPNs?

Suppose I am setting up an IPsec VPN for Apple iOS clients with the requirement that the iOS clients need to know that the server is legitimate and vice-versa. I create a root CA and issue a ...
2
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0answers
57 views

Windows certificate verification with timestamping

I have been trying to replicate the behaviour of the Digital Signatures tab on windows file properties. I'm using WinVerifyTrust api and X509Certificates namespace to achieve my goal. I've managed to ...
2
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0answers
32 views

SSL/TLS: Policy Constraints vs. Basic Constraints

Could someone please explain the difference between Policy Constraints and Basic Constraints? It appears to me that they are either redundant, or two names for the same thing. I would love some ...
2
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0answers
35 views

Windows IIS Event/Security Log ID of Private Key deletion of corresponding TLS certificate?

I'm in the middle of writing an MS Active Directory Certificate Services Key Management Lifecycle document for my organization. The primary purpose certificates will serve for this organization is to ...
2
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1answer
47 views

Best practice to verify data against a CA

Let's say that I have signed my public key with a trusted CA and the CA provided my with a signed certificate, and I want any client applications to verify against this certificate. The general ...
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0answers
61 views

Security implications of CA signed SSL cert for local development

Curious to know the security implications and potential risks involved with getting a CA signed cert for localdev.mydomain.com, and issuing it to all the developers who might need to spin up a local ...
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0answers
72 views

OAuth2 Authorization and Resource server certificates

I'm implementing a custom IAuthorizationServerHost using DotNetOpenAuth library. Example implementation uses two certificates for CreateAccessToken (see Listing 6): public AccessTokenResult ...
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0answers
195 views

How CERT.rsa is interrelated with PackageInfo signatures

I am a newbie in security and cryptography, but I am developing Android applications and now wanna to dive deeper into the Android security mechanisms. I am trying to understand how CERT.rsa (as I ...
2
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1answer
644 views

Extract the content of PKCS7 file in Java

I have a PKCS#7 signature that have the content‐type signed data and it embeds an XML document, and I have to extract the xml document from this PKCS7 file. Anyone know how to do that in java ??
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17 views

Trust CA and parent CA, but not other derivative CAs [duplicate]

I've got a problem with a client connecting to a server through an SSL-secured socket. The problem is with my requirements and the way the certificate chain gets validated. I've got three CAs to sign ...
2
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0answers
53 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 ...
2
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1answer
198 views

How does firefox know when to display a green bar?

Recently I've been working on creating a self signed CA and had some success. Now I have a working CA with valid CRL server. The root CA has been deployed to all of my devices and had no problem. ...
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0answers
29 views

Why do some unrelated websites (appear to) share certificates? [duplicate]

If you browse to https://blog.stackoverflow.com/ you see a certificate error. In Chrome: This server could not prove that it is blog.stackoverflow.com; its security certificate is from ...
2
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1answer
241 views

Finding the type of SSL certificate with cURL

This is a part of curl's verbose output when connecting to the HTTPS site of Google. * Server certificate: * subject: C=US; ST=California; L=Mountain View; O=Google Inc; CN=www.google.com * ...
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0answers
835 views

Safe communication via rest api between two known servers

I'm using Kinvey as backend but because it doesn't provide the ability to run custom code I have set up another server. So basically when x happens on Kinvey server, I send a call to my rest api on ...
2
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1answer
314 views

Sending Digital Certificates

I used the makecert tool in order to create: a self-signed certificate a server certificate using the self-signed certificate a client certificate using the self-signed certificate I then ...
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0answers
167 views

SANS Forensic Course -worth it? [closed]

I'm a Security Student at Pennsylvania State University and I am considering taking FOR408 through SANS this summer in Pittsburgh (not far from my home). I really want this to help me stand out in my ...
2
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0answers
740 views

SSL Certificate Authentication Issue 403.7 [closed]

I have been trying to configure SSL for authentication and was unable to resolve this error 403.7 on IIS 7.5 windows 2008r2 vps server. I would like to give access to few computers where client ...
1
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1answer
721 views

Untrusted connection visiting https://www.opensource.apple.com/

Somebody on Stackoverflow posted some code from https://www.opensource.apple.com/ When I click this link in Firefox (36.0) it says "This Connection is Untrusted". But other people on that thread on ...
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2answers
711 views

Create a SSL certificate and sign it with a personal certificate which in turn is signed by a certificate authority [duplicate]

I have a personal certificate which is signed by a certificate authority. This certificate is unrestricted with respect to its allowed purposes. Is it possible to create a SSL server certificate on my ...
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3answers
1k 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 ...
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4answers
1k views

certificate usage for signing and encryption

I have a question for basic operating with certificates in emails and pdfs. Im familiar with public key cryptography. The scenario: In my scenario I want to send a confidential email to a person A ...
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1answer
73 views

Server providing two different SSL certificates

When I check on browser for a site example.com, I see that site has a valid certificate, not expired, with validity till end of 2016. At the same time, When I scan for the same domain on the port 443 ...
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2answers
237 views

Can an individual get an extended validation certificate?

I am not saying I am actually going to buy one but I am wondering if an individual can get an Extended Validation SSL certificate? I know this is intended for companies / organisations but would this ...
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2answers
269 views

Understanding certificate security

I am reading Computer Networks by Tanenbaum and Weatherall. In chapter 8 they describe secure communication using public key exchange via certificates. They describe a situation where Alice is sending ...
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3answers
1k views

Is it possible to use same certificate on several machines by exporting it?

My bank proposes certificate. They say I will be able to use it only on one computer. I don't understand: can't I use same certificate on several machines by exporting and reimporting it ?
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1answer
119 views

valid intermediate certs not in browser

Say an X.509 cert is signed by an intermediate cert that's not in your browser. Maybe the root certificate is but not the intermediate cert. At that point it seems like a valid certification path ...
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1answer
444 views

Can public certificates be password-protected?

I've only seen private key files (.pfx, .pkcs12) being password protected. Someone told me public cert files (.cer) can also be password-protected. Is that true? Is it also true to say any certificate ...
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3answers
4k views

SSL interception with Burp Suite using Firefox - Strange behavior when intercepting twitter

I am learning Burp Suite(Free Edition v1.6). I have set it up with the default settings. The proxy listener is listening to 127.0.0.1 on port 8080 and Certificate option is set to 'Generate CA-signed ...
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1answer
202 views

What is stopping me from replaying an SSL certificate?

Say I have the SSL certificate for google.com. I intercept it, edit the certificate with my own domain name and public key and use it to intercept all traffic to google.com. What mechanisms exist in ...
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2answers
1k views

“A third party is capable of monitoring your network activity” with [imported] certificates?

I installed the CAcert root certificates on my Android device (which is not rooted), so that I could visit websites with server CAcert certificates without getting the "certificate not trusted" ...
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2answers
228 views

How to prove the integrity of a digital file if certificates are not an option

Certificates are a fantastic way to prove the integrity of a file - provided that they have been signed from the beginning. This methodology can prove the files authenticity, in addition proving it's ...
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2answers
3k views

Digital Certificate “Signature and Fingerprint”

What's the difference between Digital certificate's signature and fingerprint (thumbprint) ? I know that Signature: The actual signature to verify that it came from the issuer. and Thumbprint ...