This command is required to PEM-encode third-party certificate
files and files you create using option 5 (which, by default, are
named SERVER_CA.CRT).
For example, the mod_ssl directives related to CA certificate
management (SSLCACertificatePath and SSLCACertificateFile)
require hashed files.
To hash a certificate or certificate authority, perform the
following steps:
Enter the name of the path in which
you have installed your CA files. For example, if you installed
CA files for HP Secure Web Server, the location is APACHE$SPECIFIC:[CONF.SSL_CRT]*.CRT.
Press Return to hash the certificate files at the
specified location, or at the default location if you did not enter
a path. You can verify the existence of the hashed file in the directory
you selected by entering the following command: $ DIR APACHE$COMMON:[CONF.SSL_CRT] Directory APACHE$COMMON:[CONF.SSL_CRT] AE0FEDEE.0;4 DELETE_HASH_FILES.COM;1 SERVER_CA.CRT;4 Total of 3 files.
HP Open Source Security for OpenVMS Volume 2:... 
Using the Certificate Tool
