This command is required to PEM-encode third-party certificate
revocation lists (CRLs) and ones you create using the OpenSSL command
line interface. The mod_ssl directives related
to managing client revocation lists (SSLCARevocationPath and SSLCARevocationFile)
require hashed CRL files.
To hash certificate revocations, perform the following steps:
Install a trusted root CA's CRL file, or create
your own using the OPENSSL CA command (using the OpenSSL command
line interface).
Enter the name of the path in which you have installed
your CRL files. For example, if you installed CRL files for HP Secure
Web Server, the location is APACHE$ROOT:[CONF.SSL_CRL]*.CRL.
Press Return to hash the CRL files at the specified
location. You can verify the existence of the hashed file in the directory
you selected by entering the following command: $ DIR APACHE$SPECIFIC:[CONF.SSL_CRL] Directory APACHE$SPECIFIC:[CONF.SSL_CRL] AE0FEDEE.R0 CA-BUNDLE.CRL DELETE_HASH_FILES.COM Total of 3 files.
HP Open Source Security for OpenVMS Volume 2:... 
Using the Certificate Tool
