Re: Wildcard certs vs. base name

2008-11-13 Thread Bernhard Froehlich

John Nagle schrieb:
Question: Is a certificate for *.example.com considered valid for 
example.com?


OpenSSL seems to say no, but Firefox 2 says yes.  Try
https://stanford.edu; for a test.
IIRC OpenSSL does not accept wildcards at all in s_client. The library 
itself does not make any decision wether a name in a certificate matches 
the (host-)name the application tried to connect to.


Browsers seem to handle wildcards differently, see 
http://wiki.cacert.org/wiki/WildcardCertificates for some compiled 
information about the topic.


Hope it helps.
Ted
;)

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Re: [openssl-users] Wildcard certs vs. base name

2008-11-13 Thread Erwann ABALEA
Hodie pr. Id. Nov. MMVIII est, John Nagle scripsit:
 Question: Is a certificate for *.example.com considered valid for 
 example.com?

No. *.example.com could at most be reduced to .example.com, but
the first . can't be suppressed.

 OpenSSL seems to say no, but Firefox 2 says yes.  Try
 https://stanford.edu; for a test.

The certificate sent by this site has a subjectAlternativeName
extension:
X509v3 Subject Alternative Name: 
DNS:*.stanford.edu, DNS:stanford.edu

And this satisfies Firefox.

 RFC 2459 doesn't discuss wildcards.  I haven't paid
 73 CHF to access the X.509 standard at  
 http://www.itu.int/rec/T-REC-X.509-200508-I/en;.

RFC2459 is waaa obsolete, it has been replaced by RFC3280, and
then by RFC5280. It can't discuss wildcards, since it's an SSL-only
use case. Same goes for the X.509 standard (which is free to download
in PDF format).

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Erwann ABALEA [EMAIL PROTECTED]
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Wildcard certs vs. base name

2008-11-13 Thread John Nagle

Question: Is a certificate for *.example.com considered valid for 
example.com?

OpenSSL seems to say no, but Firefox 2 says yes.  Try
https://stanford.edu; for a test.

RFC 2459 doesn't discuss wildcards.  I haven't paid
73 CHF to access the X.509 standard at 
http://www.itu.int/rec/T-REC-X.509-200508-I/en;.


John Nagle
SiteTruth
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