Hi,
I created a testing CA with openssl. I generated my root private key and my self-sign root certificate. Then, I created a server authentication certificate issued by my root certificate. I also created an empty CRL to be publish that will last for a year. In the CRL distribution point of my server authentication certificate, I put a URL from which to get the CRL. It looks like this: [1]CRL Distribution Point Distribution Point Name: Full Name: URL=http://www.mysite.com/crl/My_CA.crl I have a server running Fedora with Apache and I put the file My_CA.crl in the proper place so it can be downloaded from http://www.mysite.com/crl/My_CA.crl. If I put the URL in IE or Firefox, I am able to download the file without problems, but if I verify my server authentication certificate by using either certutil -verify (Windows) or openssl verify -crl_check. (Linux), they both display "unable to get certificate CRL". I am new to openssl. I don't know if I have to do something extra to publish my CRL correctly so it can be available for downloading when requested. This is how my CRL looks like: Certificate Revocation List (CRL): Version 2 (0x1) Signature Algorithm: sha1WithRSAEncryption Issuer: /C=US/O=Test/OU=Certificates Authorities/OU=Test Root CA Last Update: Apr 28 15:38:24 2010 GMT Next Update: Apr 28 15:38:24 2011 GMT CRL extensions: X509v3 Authority Key Identifier: keyid:AD:C8:C1:A3:6B:87:7F:A9:45:C5:83:C5:57:57:D4:0E:4D:CF:4F:8D X509v3 CRL Number: 1 No Revoked Certificates. Signature Algorithm: sha1WithRSAEncryption 28:c4:aa:50:7e:e4:1e:90:b1:38:68:7f:76:17:79:a4:87:61: e7:32:dd:d1:81:ec:b6:99:ec:19:34:bb:5f:7e:cb:cd:9f:a3: 23:9e:fc:e9:bd:b3:79:bb:87:eb:23:47:01:42:28:bd:e6:97: 74:ac:8d:45:87:8f:17:79:fb:9b:df:73:42:d1:92:d5:bd:a1: 97:48:b1:5e:14:a5:78:f7:55:46:b5:cb:3b:8b:cf:0c:c0:b7: 49:da:df:a2:03:47:ba:29:55:80:5b:bb:4d:1e:26:bf:95:f1: 63:fe:63:aa:21:a6:37:40:cb:a0:9b:d9:c0:1c:a0:8f:d3:a5: c0:1e:5d:99:b5:a3:f3:7d:b7:ea:3a:a7:8a:3a:48:73:99:53: 00:78:3a:70:35:11:bf:b6:05:0d:0d:91:53:8f:54:f0:9d:a2: 90:1f:2a:97:ca:f9:28:4e:80:a6:7a:7e:f9:6a:cd:f1:87:65: 7c:ff:cb:c4:c6:85:6b:d1:f1:b2:73:75:1f:d6:9b:01:cb:58: fc:ff:6f:df:9c:4f:9c:17:5b:16:e5:c4:cd:28:12:d6:47:06: 3c:a5:c9:8b:e6:6a:7b:e0:5d:82:c4:b3:1e:3d:f1:a0:cb:b8: 82:fd:d7:d5:9d:a6:9c:56:3c:4a:ef:7f:1f:7d:7f:7e:e3:fe: 1d:8c:65:12 Thanks in advance, Alberto