Re: Certificates, users and machines

2007-05-25 Thread Urjit Gokhale
Still no response :-( Could someone please help me clarify my doubts? thanks, ~ Urjit - Original Message - From: Urjit Gokhale [EMAIL PROTECTED] To: openssl-users@openssl.org Sent: Thursday, May 24, 2007 4:28 PM Subject: Re: Certificates, users and machines Thanks for your reply. I

Re: Certificates, users and machines

2007-05-25 Thread Marek Marcola
Hello, I would like to have your opinion on one scenario, and my approach to provide needed functionality: 1) I have a server that listens to connection requests from the clients over the internet (meaning anyone and everyone who knows my ip/port can send me connection request. I am not

Re: Certificates, users and machines

2007-05-25 Thread Michael Sierchio
Urjit Gokhale wrote: It seems that you are making the common mistake of conflating authentication with authorization. Certs are useful in binding pubkeys to identities and subsequently in verifying possession of the private key by being able to perform decryption. The SSL protocol has

RE: Certificates, users and machines

2007-05-25 Thread Mouse
... is it necessary to issue ONE certificate to EACH individual. Yes. The problem of granting access based on membership in a group is an authorization problem. Correct. This doesn't have anything to do with certificates -- permissions and roles change independently of binding

Re: Certificates, users and machines

2007-05-25 Thread Michael Sierchio
Mouse wrote: I.e. for the sake of the argument identity Michael may have an attribute employee of Tenebras, and another attribute permitted access to dev repository A12. Well, the Subject Distinguished Name should have the Organization, but I strongly disagree with you if you think access

Re: Certificates, users and machines

2007-05-25 Thread Urjit Gokhale
Thank you very much for the response. For both the responses I got, it looks like the server need to access the information (whether identity or attribute or whatever) present in the certificate and use that to decide the permissions for the peer that represented this certificate. Is my

Re: RE: Certificates, users and machines

2007-05-25 Thread Victor B. Wagner
On 2007.05.25 at 08:16:19 -0400, Mouse wrote: I'm driving at Attribute Certificates. They are supposed to have shorter life than identity certs, but still long enough to be usable. I've seen project to add attribute certificates to OpenSSL. http://openpmi.sourceforge.net/ You can try to

RE: Certificates, users and machines

2007-05-25 Thread Mouse
Well, the Subject Distinguished Name should have the Organization... Can you envision long-lived certs issued by gov't - like passports? In that case, Organization would not have the same semantics. But this is less relevant for our discussion. ...but I strongly disagree with you if you

RE: Certificates, users and machines

2007-05-25 Thread Mouse
For both the responses I got, it looks like the server need to access the information (whether identity or attribute or whatever) present in the certificate and use that to decide the permissions for the peer that represented this certificate. Is my understanding correct? Partially so. An

RE: Certificates, users and machines

2007-05-25 Thread David Schwartz
and you've just multiplied your public key computation load by a factor of three of four. No, you merely double it. One - check that the identity cert is valid, two - that the attribute cert that *you* are interested in (out of a dozen that may be attached to this identity cert) is OK.

Re: Certificates, users and machines

2007-05-24 Thread Urjit Gokhale
] To: openssl-users@openssl.org Sent: Wednesday, May 16, 2007 4:45 PM Subject: Re: Certificates, users and machines A certificate binds the public key of a public/private (asymmetric) key pair with additional information. A certificate is trusted by some trusting authority. In most cases

Certificates, users and machines

2007-05-16 Thread Urjit Gokhale
Hello everyone, I have some doubts about certificates, which I wish to get clarification on. Here is my understanding about certificates: * Certificates bind the public key with some other information like the name of the owner(user), who generated the certificate, the validity period etc. *

Re: Certificates, users and machines

2007-05-16 Thread Kyle Hamilton
A certificate binds the public key of a public/private (asymmetric) key pair with additional information. A certificate is trusted by some trusting authority. In most cases, this is a certifying authority (CA) -- and the asymmetric signature by the CA is an assertion that the CA believes

Re: Certificates, users and machines

2007-05-16 Thread Victor B. Wagner
On 2007.05.16 at 16:03:38 +0530, Urjit Gokhale wrote: Hello everyone, I have some doubts about certificates, which I wish to get clarification on. Here is my understanding about certificates: * Certificates bind the public key with some other information like the name

Re: Certificates, users and machines

2007-05-16 Thread Peter Sylvester
I hope this information helps. -Kyle H Thank you for your response and information about the proxies. I now have a feeling that to write a verification callback function, I will need to retrieve the information stored in the certificate that the peer has sent to me. If you want