Hi,

Situation:
We received 2 certificates from a client communicating trying to communicat 
with our server:
1) the client certificate - Issued by VeriSign Class 1 individual Subscriber CA 
- G2
2) the VeriSign Class 1 CA Certificate - Issued by Class 1 Public Primary 
Certification Authority

I generated hashed symlinks for both these certificates in the folder specified 
by SSLCACertificatePath.
I restarted my Apache server and my server fails to authenticate my client.  

What bothers me is that I have never encountered this issue whenever I've had 
to import in Class 3 VeriSign client certificates into Apache.  Am I missing 
something in my Apache/mod_ssl configuration?

Below are the details of our server setup as well as the error_log file of what 
is failing in mod_ssl.
  
Machine Setup:
Apache/1.3.37 (Linux) mod_jk/1.2.20 mod_ssl/2.8.28 OpenSSL/0.9.8d

Our server performs client authentication with the following settings in our 
httpd.conf file:

SSLCipherSuite 
ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+TLSv1:+SSLv2:+EXP:+eNULL

<Location />        
SSLOptions +StdEnvVars +ExportCertData        
SSLVerifyClient require        
SSLVerifyDepth 4
</Location>

SSLCACertificatePath -> path to a folder containing hashed symlinks of our 
client CA certs
SSLCARevocationPath -> path to a folder containing hashed symlinks of our 
client CA CRLs


Apache error_log:

[Fri Oct 12 17:42:04 2007] [error] mod_ssl: Certificate Verification: Error 
(20): unable to get local issuer certificate
[Fri Oct 12 17:42:04 2007] [error] mod_ssl: Re-negotiation handshake failed: 
Not accepted by client!?
[Fri Oct 12 17:42:04 2007] [error] mod_ssl: Certificate Verification: Error 
(20): unable to get local issuer certificate
[Fri Oct 12 17:42:04 2007] [error] mod_ssl: SSL error on writing data (OpenSSL 
library error follows)
[Fri Oct 12 17:42:04 2007] [error] OpenSSL: error:140890B2:SSL 
routines:SSL3_GET_CLIENT_CERTIFICATE:no certificate returned


Thanks in advance for any help that can be provided.

Howard Wong
Intermediate Software Developer
The SPi Group Inc.
Enabling Energy Markets
[EMAIL PROTECTED]
Tel: 416.408.1395 ext. 264 Fax: 416.408.1396
154 University Avenue, Suite 300, Toronto, ON, Canada, M5H 3Y9
www.thespigroup.com
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