Re: [openssl-users] How many SAN entries...?
It depends on the CA in question, more so on the number of the attributes that are included, and of course on the set of users. ;-) So far I assure you I've no concern for pitchforks. ;-) Regards, Uri P.S. Why do you think validating, e.g., three email addresses is any more difficult than one? If that one is not under your direct control, that is? Sure, it may take longer to validate three - but it's the "process" time, not "human/employee" time. Sent from my iPhone > On Apr 27, 2017, at 10:28, Jochen Bernwrote: > > On 04/27/2017 04:09 PM, openssl-users-requ...@openssl.org digested: >> From: "Blumenthal, Uri - 0553 - MITLL" >> >> You do not "revoke" a subset of attributes aka SAN emails. When any of >> the certified attributes changes (i.e., is certification no longer valid), >> the certificate is revoked and (possibly) re-issued. > > Precisely. Now imagine the cert being used for S/MIME (why would a cert > list several e-mail addresses if it weren't somehow related to e-mails > and the addressee's identity?) and the CA or its procedures insisting on > renewing keypairs when a new cert is issued. I'ld say you'ld get users > and their pitchforks asking for multiple SINGLE-attribute/value certs > real fast. > > Regards, > -- > Jochen Bern > Systemingenieur > > Fon:+49 6151 9067-231 > Fax:+49 6151 9067-290 > E-Mail: jochen.b...@binect.de > > www.binect.de > www.facebook.de/binect > > Binect ist ausgezeichnet: > Sieger INNOVATIONSPREIS-IT 2017 | Das Büro: Top 100 Büroprodukte 2017 > > Binect GmbH > > Robert-Koch-Straße 9, 64331 Weiterstadt, DE > > Geschäftsführung: Christian Ladner, Dr. Frank Wermeyer, Nils Manegold > Unternehmenssitz: Weiterstadt > Register: Amtsgericht Darmstadt, HRB 94685 > Umsatzsteuer-ID: DE 221 302 264 > > MAX 21-Unternehmensgruppe > ✁ > Diese E-Mail kann vertrauliche Informationen enthalten. Wenn Sie nicht > der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, > informieren Sie bitte sofort den Absender und vernichten Sie diese > E-Mail. Das unerlaubte Kopieren, sowie die unbefugte Weitergabe dieser > Mail oder von Teilen dieser Mail ist nicht gestattet. Jede von der > Binect GmbH versendete Mail ist sorgfältig erstellt worden, dennoch > schließen wir die rechtliche Verbindlichkeit aus; sie kann nicht zu > einer irgendwie gearteten Verpflichtung zu Lasten der Binect GmbH > ausgelegt werden. Wir haben alle verkehrsüblichen Maßnahmen unternommen, > um das Risiko der Verbreitung virenbefallener Software oder E-Mails zu > minimieren, dennoch raten wir Ihnen, Ihre eigenen Virenkontrollen auf > alle Anhänge an dieser Nachricht durchzuführen. > Wir schließen, außer für den Fall von Vorsatz oder grober > Fahrlässigkeit, die Haftung für jeglichen Verlust oder Schäden durch > virenbefallene Software oder E-Mail aus. > > This e-mail may contain confidential and/or privileged information. If > you are not the intended recipient (or have received this e-mail in > error) please notify the sender immediately and destroy this e-mail. Any > unauthorized copying, disclosure or distribution of contents of this > e-mail is strictly prohibited. All Binect GmbH emails are created > thoroughly, nevertheless we do not accept any legal obligation for the > information and wording contained herein. Binect GmbH has taken > precautionary measures to reduce the risk of possible distribution of > virus infected software or emails. However, we advise you to check > attachments to this email for viruses. Except for cases of intent or > gross negligence, we cannot accept any legal obligation for loss or > damage by virus infected software. > > -- > openssl-users mailing list > To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users smime.p7s Description: S/MIME cryptographic signature -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
On 04/27/2017 04:09 PM, openssl-users-requ...@openssl.org digested: > From: "Blumenthal, Uri - 0553 - MITLL"> > You do not "revoke" a subset of attributes aka SAN emails. When any of > the certified attributes changes (i.e., is certification no longer valid), > the certificate is revoked and (possibly) re-issued. Precisely. Now imagine the cert being used for S/MIME (why would a cert list several e-mail addresses if it weren't somehow related to e-mails and the addressee's identity?) and the CA or its procedures insisting on renewing keypairs when a new cert is issued. I'ld say you'ld get users and their pitchforks asking for multiple SINGLE-attribute/value certs real fast. Regards, -- Jochen Bern Systemingenieur Fon:+49 6151 9067-231 Fax:+49 6151 9067-290 E-Mail: jochen.b...@binect.de www.binect.de www.facebook.de/binect Binect ist ausgezeichnet: Sieger INNOVATIONSPREIS-IT 2017 | Das Büro: Top 100 Büroprodukte 2017 Binect GmbH Robert-Koch-Straße 9, 64331 Weiterstadt, DE Geschäftsführung: Christian Ladner, Dr. Frank Wermeyer, Nils Manegold Unternehmenssitz: Weiterstadt Register: Amtsgericht Darmstadt, HRB 94685 Umsatzsteuer-ID: DE 221 302 264 MAX 21-Unternehmensgruppe ✁ Diese E-Mail kann vertrauliche Informationen enthalten. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren, sowie die unbefugte Weitergabe dieser Mail oder von Teilen dieser Mail ist nicht gestattet. Jede von der Binect GmbH versendete Mail ist sorgfältig erstellt worden, dennoch schließen wir die rechtliche Verbindlichkeit aus; sie kann nicht zu einer irgendwie gearteten Verpflichtung zu Lasten der Binect GmbH ausgelegt werden. Wir haben alle verkehrsüblichen Maßnahmen unternommen, um das Risiko der Verbreitung virenbefallener Software oder E-Mails zu minimieren, dennoch raten wir Ihnen, Ihre eigenen Virenkontrollen auf alle Anhänge an dieser Nachricht durchzuführen. Wir schließen, außer für den Fall von Vorsatz oder grober Fahrlässigkeit, die Haftung für jeglichen Verlust oder Schäden durch virenbefallene Software oder E-Mail aus. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of contents of this e-mail is strictly prohibited. All Binect GmbH emails are created thoroughly, nevertheless we do not accept any legal obligation for the information and wording contained herein. Binect GmbH has taken precautionary measures to reduce the risk of possible distribution of virus infected software or emails. However, we advise you to check attachments to this email for viruses. Except for cases of intent or gross negligence, we cannot accept any legal obligation for loss or damage by virus infected software. smime.p7s Description: S/MIME Cryptographic Signature -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
You do not "revoke" a subset of attributes aka SAN emails. When any of the certified attributes changes (i.e., is certification no longer valid), the certificate is revoked and (possibly) re-issued. The process is no different than with any other set of attributes, several of which may be owned/controlled by different organizations. Regards, Uri Sent from my iPhone > On Apr 27, 2017, at 09:41, Jochen Bernwrote: > > On 04/26/2017 07:13 PM, Viktor Dukhovni was digested as writing: >> On Apr 26, 2017, at 1:03 PM, Blumenthal, Uri - 0553 - MITLL >> wrote: >>> It?s been my understanding that a cert can contain as many SAN attributes >>> as needed, >>> but it appears that Apple believes it has to be only one (because >>> certificates with >>> more than one are not processed properly). >> >> Perhaps CAs have rarely issued email certificates with multiple email >> addresses. > > The mechanics of verifying - or, if necessary, revoking - every single > one should be ... interesting. Unless, maybe, it's a boatload of > ("typo"?) aliases from the same organization. > > [Remembers manually splitting others' PGP pubkeys into single-user-ID > ones after signing parties so as to send every freshly-signed ID only to > the *one* address stated in it] > > Regards, > -- > Jochen Bern > Systemingenieur > > Fon:+49 6151 9067-231 > Fax:+49 6151 9067-290 > E-Mail: jochen.b...@binect.de > > www.binect.de > www.facebook.de/binect > > Binect ist ausgezeichnet: > Sieger INNOVATIONSPREIS-IT 2017 | Das Büro: Top 100 Büroprodukte 2017 > > Binect GmbH > > Robert-Koch-Straße 9, 64331 Weiterstadt, DE > > Geschäftsführung: Christian Ladner, Dr. Frank Wermeyer, Nils Manegold > Unternehmenssitz: Weiterstadt > Register: Amtsgericht Darmstadt, HRB 94685 > Umsatzsteuer-ID: DE 221 302 264 > > MAX 21-Unternehmensgruppe > ✁ > Diese E-Mail kann vertrauliche Informationen enthalten. Wenn Sie nicht > der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, > informieren Sie bitte sofort den Absender und vernichten Sie diese > E-Mail. Das unerlaubte Kopieren, sowie die unbefugte Weitergabe dieser > Mail oder von Teilen dieser Mail ist nicht gestattet. Jede von der > Binect GmbH versendete Mail ist sorgfältig erstellt worden, dennoch > schließen wir die rechtliche Verbindlichkeit aus; sie kann nicht zu > einer irgendwie gearteten Verpflichtung zu Lasten der Binect GmbH > ausgelegt werden. Wir haben alle verkehrsüblichen Maßnahmen unternommen, > um das Risiko der Verbreitung virenbefallener Software oder E-Mails zu > minimieren, dennoch raten wir Ihnen, Ihre eigenen Virenkontrollen auf > alle Anhänge an dieser Nachricht durchzuführen. > Wir schließen, außer für den Fall von Vorsatz oder grober > Fahrlässigkeit, die Haftung für jeglichen Verlust oder Schäden durch > virenbefallene Software oder E-Mail aus. > > This e-mail may contain confidential and/or privileged information. If > you are not the intended recipient (or have received this e-mail in > error) please notify the sender immediately and destroy this e-mail. Any > unauthorized copying, disclosure or distribution of contents of this > e-mail is strictly prohibited. All Binect GmbH emails are created > thoroughly, nevertheless we do not accept any legal obligation for the > information and wording contained herein. Binect GmbH has taken > precautionary measures to reduce the risk of possible distribution of > virus infected software or emails. However, we advise you to check > attachments to this email for viruses. Except for cases of intent or > gross negligence, we cannot accept any legal obligation for loss or > damage by virus infected software. > > -- > openssl-users mailing list > To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users smime.p7s Description: S/MIME cryptographic signature -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
On 04/26/2017 07:13 PM, Viktor Dukhovni was digested as writing: > On Apr 26, 2017, at 1:03 PM, Blumenthal, Uri - 0553 - MITLL> wrote: >> It?s been my understanding that a cert can contain as many SAN attributes as >> needed, >> but it appears that Apple believes it has to be only one (because >> certificates with >> more than one are not processed properly). > > Perhaps CAs have rarely issued email certificates with multiple email > addresses. The mechanics of verifying - or, if necessary, revoking - every single one should be ... interesting. Unless, maybe, it's a boatload of ("typo"?) aliases from the same organization. [Remembers manually splitting others' PGP pubkeys into single-user-ID ones after signing parties so as to send every freshly-signed ID only to the *one* address stated in it] Regards, -- Jochen Bern Systemingenieur Fon:+49 6151 9067-231 Fax:+49 6151 9067-290 E-Mail: jochen.b...@binect.de www.binect.de www.facebook.de/binect Binect ist ausgezeichnet: Sieger INNOVATIONSPREIS-IT 2017 | Das Büro: Top 100 Büroprodukte 2017 Binect GmbH Robert-Koch-Straße 9, 64331 Weiterstadt, DE Geschäftsführung: Christian Ladner, Dr. Frank Wermeyer, Nils Manegold Unternehmenssitz: Weiterstadt Register: Amtsgericht Darmstadt, HRB 94685 Umsatzsteuer-ID: DE 221 302 264 MAX 21-Unternehmensgruppe ✁ Diese E-Mail kann vertrauliche Informationen enthalten. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese E-Mail. Das unerlaubte Kopieren, sowie die unbefugte Weitergabe dieser Mail oder von Teilen dieser Mail ist nicht gestattet. Jede von der Binect GmbH versendete Mail ist sorgfältig erstellt worden, dennoch schließen wir die rechtliche Verbindlichkeit aus; sie kann nicht zu einer irgendwie gearteten Verpflichtung zu Lasten der Binect GmbH ausgelegt werden. Wir haben alle verkehrsüblichen Maßnahmen unternommen, um das Risiko der Verbreitung virenbefallener Software oder E-Mails zu minimieren, dennoch raten wir Ihnen, Ihre eigenen Virenkontrollen auf alle Anhänge an dieser Nachricht durchzuführen. Wir schließen, außer für den Fall von Vorsatz oder grober Fahrlässigkeit, die Haftung für jeglichen Verlust oder Schäden durch virenbefallene Software oder E-Mail aus. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of contents of this e-mail is strictly prohibited. All Binect GmbH emails are created thoroughly, nevertheless we do not accept any legal obligation for the information and wording contained herein. Binect GmbH has taken precautionary measures to reduce the risk of possible distribution of virus infected software or emails. However, we advise you to check attachments to this email for viruses. Except for cases of intent or gross negligence, we cannot accept any legal obligation for loss or damage by virus infected software. smime.p7s Description: S/MIME Cryptographic Signature -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
On Wed, Apr 26, 2017 at 1:03 PM, Blumenthal, Uri - 0553 - MITLLwrote: > A naïve question. A certificate that contains SAN attribute(s) – is there a > limit on how many, say, RFC822 SAN attributes can a valid certificate have? > > > > It’s been my understanding that a cert can contain as many SAN attributes as > needed, but it appears that Apple believes it has to be only one (because > certificates with more than one are not processed properly). Lol... Apple is notorious for their defective and untested software. I'm pretty sure they don't have a QA department. Also see https://news.ycombinator.com/item?id=11034071. Worse, when a bug is reported through their RADAR, it goes unfixed. They force users into QA, and then don't fix the bugs that are reported. Jeff -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
confirmed, i've seen dozens on one cert - far more preferable to do that and have such numbers than a single wildcard cert (which has issues on all sorts of platforms for various purposes). alan On 26 April 2017 at 18:24, Blumenthal, Uri - 0553 - MITLLwrote: > > It’s been my understanding that a cert can contain as many SAN > attributes as needed, > > but it appears that Apple believes it has to be only one (because > certificates with > > more than one are not processed properly). > > Perhaps CAs have rarely issued email certificates with multiple email > addresses. > > :-) > > OpenSSL will accept multiple email SANs and with email name checks will > accept > the certificate as valid so long as *one* of the addresses is a match. > > Thank you! That’s what I expected and hoped for. Appreciate the help! > > > -- > openssl-users mailing list > To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users > -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
> It’s been my understanding that a cert can contain as many SAN attributes as needed, > but it appears that Apple believes it has to be only one (because certificates with > more than one are not processed properly). Perhaps CAs have rarely issued email certificates with multiple email addresses. :-) OpenSSL will accept multiple email SANs and with email name checks will accept the certificate as valid so long as *one* of the addresses is a match. Thank you! That’s what I expected and hoped for. Appreciate the help! smime.p7s Description: S/MIME cryptographic signature -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
> On Apr 26, 2017, at 1:03 PM, Blumenthal, Uri - 0553 - MITLL> wrote: > > A naïve question. A certificate that contains SAN attribute(s) – is there a > limit > on how many, say, RFC822 SAN attributes can a valid certificate have? None of the standard SAN types (DNS, Email, IP, ...) are limited to just one entry. If you try to have hundreds of them, eventually the certificate may become too big for various protocols, but that's an explicit limit on the SAN multiplicity. > It’s been my understanding that a cert can contain as many SAN attributes as > needed, > but it appears that Apple believes it has to be only one (because > certificates with > more than one are not processed properly). Perhaps CAs have rarely issued email certificates with multiple email addresses. > Sanity check: please validate – am I correct that having, say, two RFC822 > email > addresses in one cert is OK? OpenSSL will accept multiple email SANs and with email name checks will accept the certificate as valid so long as one of the addresses is a match. -- Viktor. -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
Re: [openssl-users] How many SAN entries...?
> A naïve question. A certificate that contains SAN attribute(s) – is there a > limit on how many, say, RFC822 SAN attributes can a valid certificate have? No. > It’s been my understanding that a cert can contain as many SAN attributes as > needed, but it appears that Apple believes it has to be only one (because > certificates with more than one are not processed properly). I can guess at, and understand, their reasoning -- it allows mail spoofing and stealing. And the use of such certs is not common. -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users
[openssl-users] How many SAN entries...?
A naïve question. A certificate that contains SAN attribute(s) – is there a limit on how many, say, RFC822 SAN attributes can a valid certificate have? It’s been my understanding that a cert can contain as many SAN attributes as needed, but it appears that Apple believes it has to be only one (because certificates with more than one are not processed properly). Sanity check: please validate – am I correct that having, say, two RFC822 email addresses in one cert is OK? — Regards, Uri smime.p7s Description: S/MIME cryptographic signature -- openssl-users mailing list To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-users