RE: extending a PKCS12 certificate
No, I didn't think of using Attribute Certificate not for "authentication" per se - but to ascertain certain properties of the authenticated entities. Your visa example is excellent - it illustrates my point very well. As for who manages AC - that's a different question, because AT THIS TIME CA's are the only organizations that both have public trust to provide this service (certifying something about public keys) and have the necessary experience and position to do that. I'm thinking of industrial deployment - for that I believe we need some company & framework already established. I see no reason (besides possible unwillingness) who CA's would not want the extra business of certifying things other than "raw" indentities. Verification process isn't that different (if at all), and they are already verifying some attributes - so why not more. Thanks for PERMIS reference - I wasn't aware of it, will check. Regards, Uri > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Dmitrij Mironov > Sent: Monday, August 07, 2006 01:44 > To: openssl-users@openssl.org > Subject: RE: extending a PKCS12 certificate > > IMHO Attribute Certificates (AC) must be issued not by CA's, > but by other institutions (if I remember correctly this is > stated in RFC3181). PKC (public key cert.) in this situation > is like passport and AC is like visa. > > If you are planning to use AC for authentification, then only > you must manage AC issuance and revocation process. So, you > need not a certificates from cert. providers, but AC > infrastructure solution. Give some attention to openPERMIS or > PERMIS projects, probably this helps. > > Regards, > > Dmitrij > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Mouse > > Sent: Friday, August 04, 2006 5:10 PM > > To: openssl-users@openssl.org > > Subject: RE: extending a PKCS12 certificate > > > > It doesn't makes much sense to add attributes to certs if > values of > > those attributes can't be verified. Attribute Certificate seems the > > right way to go (thanks, Vijay!). > > > > The question is - do our "mainstream" CA's (such as VeriSign, > > etc.) support Attribute Certificate? > > > > Tnx! > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of > Sascha Kiefer > > > Sent: Friday, August 04, 2006 10:00 > > > To: openssl-users@openssl.org > > > Subject: RE: extending a PKCS12 certificate > > > > > > Hi Gerd, > > > > > > It will. But as Dmitrij already pointed out that there are > > Attribute > > > Certificates. > > > Those attributes are not part of the signed data, so they can be > > > change (but also by anybody). > > > > > > But inside a PKCS there are at least safe and for > internal use, it > > > might work. (But you do not want to send login information > > that maybe > > > stored in a public certificate send to the outside world, > so for my > > > understanding, it will no longer be a public certificate, > would it?) > > > > > > So long, > > > --sk > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of > > > [EMAIL PROTECTED] > > > Sent: Freitag, 4. August 2006 17:24 > > > To: openssl-users@openssl.org > > > Subject: RE: extending a PKCS12 certificate > > > > > > Hello Sascha, > > > > > > wouldn't this invalidate the digest and therefor the entire > > > certificate? > > > If changing the arbitrary data does not invalidate the > > certificate, it > > > must not be part of the digest, but then everybody would > be able to > > > change it. > > > > > > And just adding the arbitrary data to the PKCS12 file would > > not make > > > those data more trustworthy either. If this is possible at all. > > > > > > With kind regards > > > > > > Gerd > > > > > > > -Original Message- > > > > From: [EMAIL PROTECTED] > > > > [mailto:[EMAIL PROTECTED] On Behalf Of > > Sascha Kiefer > > > > Sent: Friday, August 04, 2006 2:11 PM > > > > To: openssl-users@openssl.org > > > > Subject: RE: extending a PKCS12 certificate > > > > > > >
RE: extending a PKCS12 certificate
IMHO Attribute Certificates (AC) must be issued not by CA's, but by other institutions (if I remember correctly this is stated in RFC3181). PKC (public key cert.) in this situation is like passport and AC is like visa. If you are planning to use AC for authentification, then only you must manage AC issuance and revocation process. So, you need not a certificates from cert. providers, but AC infrastructure solution. Give some attention to openPERMIS or PERMIS projects, probably this helps. Regards, Dmitrij > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Mouse > Sent: Friday, August 04, 2006 5:10 PM > To: openssl-users@openssl.org > Subject: RE: extending a PKCS12 certificate > > It doesn't makes much sense to add attributes to certs if > values of those attributes can't be verified. Attribute > Certificate seems the right way to go (thanks, Vijay!). > > The question is - do our "mainstream" CA's (such as VeriSign, > etc.) support Attribute Certificate? > > Tnx! > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Sascha Kiefer > > Sent: Friday, August 04, 2006 10:00 > > To: openssl-users@openssl.org > > Subject: RE: extending a PKCS12 certificate > > > > Hi Gerd, > > > > It will. But as Dmitrij already pointed out that there are > Attribute > > Certificates. > > Those attributes are not part of the signed data, so they can be > > change (but also by anybody). > > > > But inside a PKCS there are at least safe and for internal use, it > > might work. (But you do not want to send login information > that maybe > > stored in a public certificate send to the outside world, so for my > > understanding, it will no longer be a public certificate, would it?) > > > > So long, > > --sk > > > > -----Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > [EMAIL PROTECTED] > > Sent: Freitag, 4. August 2006 17:24 > > To: openssl-users@openssl.org > > Subject: RE: extending a PKCS12 certificate > > > > Hello Sascha, > > > > wouldn't this invalidate the digest and therefor the entire > > certificate? > > If changing the arbitrary data does not invalidate the > certificate, it > > must not be part of the digest, but then everybody would be able to > > change it. > > > > And just adding the arbitrary data to the PKCS12 file would > not make > > those data more trustworthy either. If this is possible at all. > > > > With kind regards > > > > Gerd > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of > Sascha Kiefer > > > Sent: Friday, August 04, 2006 2:11 PM > > > To: openssl-users@openssl.org > > > Subject: RE: extending a PKCS12 certificate > > > > > > As far as i know, PKCS12 is just a combination of your > > private key and > > > the public certificate. So, it should be possible to extract the > > > certificate, make the changes and pack it together with > the private > > > key again. > > > > > > -Original Message- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] On Behalf Of > Theodore Olen > > > Sent: Freitag, 4. August 2006 15:31 > > > To: openssl-users@openssl.org > > > Subject: extending a PKCS12 certificate > > > > > > Hello all, > > > > > > I would like to ask a question about PKCS12 certificates. > > > > > > Is it possible to extend a PKCS12 certificate with > arbitral data? I > > > would like to extend a given certificate with user data > > (such as login > > > and > > > password) in such a way that the output certificate is > > still a valid > > > certificate. > > > > > > If so, can this be done with OpenSSL? How do I extract the > > extensions? > > > > > > Thanks in advance. Kind regards, > > > > > > Theodore > > > > > > _ > > > Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ > > > > > > > > > __ > > > OpenSSL Project > > http://www.openssl.org > > > User Support Mai
RE: extending a PKCS12 certificate
It doesn't makes much sense to add attributes to certs if values of those attributes can't be verified. Attribute Certificate seems the right way to go (thanks, Vijay!). The question is - do our "mainstream" CA's (such as VeriSign, etc.) support Attribute Certificate? Tnx! > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Sascha Kiefer > Sent: Friday, August 04, 2006 10:00 > To: openssl-users@openssl.org > Subject: RE: extending a PKCS12 certificate > > Hi Gerd, > > It will. But as Dmitrij already pointed out that there are > Attribute Certificates. > Those attributes are not part of the signed data, so they can > be change (but also by anybody). > > But inside a PKCS there are at least safe and for internal > use, it might work. (But you do not want to send login > information that maybe stored in a public certificate send to > the outside world, so for my understanding, it will no longer > be a public certificate, would it?) > > So long, > --sk > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Freitag, 4. August 2006 17:24 > To: openssl-users@openssl.org > Subject: RE: extending a PKCS12 certificate > > Hello Sascha, > > wouldn't this invalidate the digest and therefor the entire > certificate? > If changing the arbitrary data does not invalidate the > certificate, it must not be part of the digest, but then > everybody would be able to change it. > > And just adding the arbitrary data to the PKCS12 file would > not make those data more trustworthy either. If this is > possible at all. > > With kind regards > > Gerd > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Sascha Kiefer > > Sent: Friday, August 04, 2006 2:11 PM > > To: openssl-users@openssl.org > > Subject: RE: extending a PKCS12 certificate > > > > As far as i know, PKCS12 is just a combination of your > private key and > > the public certificate. So, it should be possible to extract the > > certificate, make the changes and pack it together with the private > > key again. > > > > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen > > Sent: Freitag, 4. August 2006 15:31 > > To: openssl-users@openssl.org > > Subject: extending a PKCS12 certificate > > > > Hello all, > > > > I would like to ask a question about PKCS12 certificates. > > > > Is it possible to extend a PKCS12 certificate with arbitral data? I > > would like to extend a given certificate with user data > (such as login > > and > > password) in such a way that the output certificate is > still a valid > > certificate. > > > > If so, can this be done with OpenSSL? How do I extract the > extensions? > > > > Thanks in advance. Kind regards, > > > > Theodore > > > > _ > > Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ > > > > > __ > > OpenSSL Project > http://www.openssl.org > > User Support Mailing List > openssl-users@openssl.org > > Automated List Manager > [EMAIL PROTECTED] > > > > > __ > > OpenSSL Project > http://www.openssl.org > > User Support Mailing List > openssl-users@openssl.org > > Automated List Manager > [EMAIL PROTECTED] > > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager > [EMAIL PROTECTED] __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
Hi Gerd, It will. But as Dmitrij already pointed out that there are Attribute Certificates. Those attributes are not part of the signed data, so they can be change (but also by anybody). But inside a PKCS there are at least safe and for internal use, it might work. (But you do not want to send login information that maybe stored in a public certificate send to the outside world, so for my understanding, it will no longer be a public certificate, would it?) So long, --sk -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Freitag, 4. August 2006 17:24 To: openssl-users@openssl.org Subject: RE: extending a PKCS12 certificate Hello Sascha, wouldn't this invalidate the digest and therefor the entire certificate? If changing the arbitrary data does not invalidate the certificate, it must not be part of the digest, but then everybody would be able to change it. And just adding the arbitrary data to the PKCS12 file would not make those data more trustworthy either. If this is possible at all. With kind regards Gerd > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Sascha Kiefer > Sent: Friday, August 04, 2006 2:11 PM > To: openssl-users@openssl.org > Subject: RE: extending a PKCS12 certificate > > As far as i know, PKCS12 is just a combination of your private key and > the public certificate. So, it should be possible to extract the > certificate, make the changes and pack it together with the private > key again. > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen > Sent: Freitag, 4. August 2006 15:31 > To: openssl-users@openssl.org > Subject: extending a PKCS12 certificate > > Hello all, > > I would like to ask a question about PKCS12 certificates. > > Is it possible to extend a PKCS12 certificate with arbitral data? I > would like to extend a given certificate with user data (such as login > and > password) in such a way that the output certificate is still a valid > certificate. > > If so, can this be done with OpenSSL? How do I extract the extensions? > > Thanks in advance. Kind regards, > > Theodore > > _ > Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: extending a PKCS12 certificate
Theodore Olen wrote: Hello, I'll look into Attribute Certificate, as I've never heard of this term before. Thanks! See http://www.ietf.org/rfc/rfc3281.txt - vijay -- Vijay K. Gurbani [EMAIL PROTECTED],research.bell-labs.com,acm.org} Bell Laboratories, Lucent Technologies, Inc. 2701 Lucent Lane, Rm. 9F-546, Lisle, Illinois 60532 (USA) __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
> ensures me that the data is safely stored, as the certificate, and therefore > also my additional data, can only be opened when the password is known. If this is all you want to do, a cryptographic beginner such as yourself will probably find it easier to use something like the GNU Privacy Guard. /r$ -- SOA Appliances Application Integration Middleware __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
Hello, I'll look into Attribute Certificate, as I've never heard of this term before. Thanks! Kind regards, Theodore From: "Dmitrij Mironov" <[EMAIL PROTECTED]> Reply-To: openssl-users@openssl.org To: Subject: RE: extending a PKCS12 certificate Date: Fri, 4 Aug 2006 15:11:28 +0300 It seems like you are talking about Attribute Certificate, but openssl doesn't support them. Unfortunately. :o( > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen > Sent: Friday, August 04, 2006 2:31 PM > To: openssl-users@openssl.org > Subject: extending a PKCS12 certificate > > Hello all, > > I would like to ask a question about PKCS12 certificates. > > Is it possible to extend a PKCS12 certificate with arbitral > data? I would like to extend a given certificate with user > data (such as login and > password) in such a way that the output certificate is still > a valid certificate. > > If so, can this be done with OpenSSL? How do I extract the extensions? > > Thanks in advance. Kind regards, > > Theodore > > _ > Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] _ Download de nieuwste versie van Messenger: Windows Live Messenger http://imagine-msn.com/messenger/launch80/default.aspx?locale=nl-nl __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
Re: extending a PKCS12 certificate
PKCS12 is a data format. It's usually password-protected, and is designed to bundle together a private key with one or more certificates. Openssl includes tools (programs and API's) to parse and generate PKCS12. Once you've extracted the cert, you can parse it, and add an extension. To sign the new certificate, you need the CA's private key; if you don't have that, forget it. If you do have that, then you might want to look at apps/ca.c or apps/x509.c to see the API's used to manipulate extensions and sign certificates. /r$ -- SOA Appliances Application Integration Middleware __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
Hello, Thanks for your reply. Can you please give a little more explanation on how this can be done? To be sure, I don't want to change the private key and public certificate; simply said, I want to add arbitrary data to my .p12-file. Why do I want this? This ensures me that the data is safely stored, as the certificate, and therefore also my additional data, can only be opened when the password is known. Thanks in advance. Kind regards, Theodore From: "Sascha Kiefer" <[EMAIL PROTECTED]> Reply-To: openssl-users@openssl.org To: Subject: RE: extending a PKCS12 certificate Date: Fri, 4 Aug 2006 16:11:14 +0400 As far as i know, PKCS12 is just a combination of your private key and the public certificate. So, it should be possible to extract the certificate, make the changes and pack it together with the private key again. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen Sent: Freitag, 4. August 2006 15:31 To: openssl-users@openssl.org Subject: extending a PKCS12 certificate Hello all, I would like to ask a question about PKCS12 certificates. Is it possible to extend a PKCS12 certificate with arbitral data? I would like to extend a given certificate with user data (such as login and password) in such a way that the output certificate is still a valid certificate. If so, can this be done with OpenSSL? How do I extract the extensions? Thanks in advance. Kind regards, Theodore _ Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] _ Bellen met Messenger? Download nu Windows Live Messenger beta! http://imagine-msn.com/messenger/launch80/default.aspx?locale=nl-nl __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
Hello Sascha, wouldn't this invalidate the digest and therefor the entire certificate? If changing the arbitrary data does not invalidate the certificate, it must not be part of the digest, but then everybody would be able to change it. And just adding the arbitrary data to the PKCS12 file would not make those data more trustworthy either. If this is possible at all. With kind regards Gerd > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Sascha Kiefer > Sent: Friday, August 04, 2006 2:11 PM > To: openssl-users@openssl.org > Subject: RE: extending a PKCS12 certificate > > As far as i know, PKCS12 is just a combination of your private key and > the public certificate. So, it should be possible to extract the > certificate, make > the changes and pack it together with the private key again. > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen > Sent: Freitag, 4. August 2006 15:31 > To: openssl-users@openssl.org > Subject: extending a PKCS12 certificate > > Hello all, > > I would like to ask a question about PKCS12 certificates. > > Is it possible to extend a PKCS12 certificate with arbitral > data? I would > like to extend a given certificate with user data (such as login and > password) in such a way that the output certificate is still a valid > certificate. > > If so, can this be done with OpenSSL? How do I extract the extensions? > > Thanks in advance. Kind regards, > > Theodore > > _ > Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
It seems like you are talking about Attribute Certificate, but openssl doesn't support them. Unfortunately. :o( > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen > Sent: Friday, August 04, 2006 2:31 PM > To: openssl-users@openssl.org > Subject: extending a PKCS12 certificate > > Hello all, > > I would like to ask a question about PKCS12 certificates. > > Is it possible to extend a PKCS12 certificate with arbitral > data? I would like to extend a given certificate with user > data (such as login and > password) in such a way that the output certificate is still > a valid certificate. > > If so, can this be done with OpenSSL? How do I extract the extensions? > > Thanks in advance. Kind regards, > > Theodore > > _ > Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ > > __ > OpenSSL Project http://www.openssl.org > User Support Mailing Listopenssl-users@openssl.org > Automated List Manager [EMAIL PROTECTED] > __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
RE: extending a PKCS12 certificate
As far as i know, PKCS12 is just a combination of your private key and the public certificate. So, it should be possible to extract the certificate, make the changes and pack it together with the private key again. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Theodore Olen Sent: Freitag, 4. August 2006 15:31 To: openssl-users@openssl.org Subject: extending a PKCS12 certificate Hello all, I would like to ask a question about PKCS12 certificates. Is it possible to extend a PKCS12 certificate with arbitral data? I would like to extend a given certificate with user data (such as login and password) in such a way that the output certificate is still a valid certificate. If so, can this be done with OpenSSL? How do I extract the extensions? Thanks in advance. Kind regards, Theodore _ Meer ruimte nodig? Maak nu je eigen Space http://spaces.msn.nl/ __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED] __ OpenSSL Project http://www.openssl.org User Support Mailing Listopenssl-users@openssl.org Automated List Manager [EMAIL PROTECTED]
