24.11.1 CA Certificates in an LDAP Directory

This example adds a certificate for a certificate authority to an LDAP directory. The directory structure for these certificates already exists. The certificate and the LDAP entries where it belongs are entered into an .ldif file named add-root-CA-cert.ldif. All text is entered into the file in ASCII text except for the certificate information, which must be entered as Base64 encoded text:

dn: cn=SMIME Admin,ou=people,o=demo.siroe.com,o=demo
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: inetOrgPerson
objectClass: certificationAuthority
cn: RootCACerts
sn: CA
authorityRevocationList: novalue
certificateRevocationList: novalue
cacertificate;binary:: MFU01JTUUEjAQBgNVBAsTCU1zZ1NlcnZlcjcMBoGA1UEAxMTydG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The CA’s certificate is added to the LDAP directory with an ldapmodify command:

# ldapmodify -a -h demo.siroe.com -D "cn=Directory Manager" -w mypasswd -v
 -f add-root-CA-cert.ldif

The value of the trustedurl parameter in smime.conf specifies the location of the CA certificates in the LDAP directory. For Example 1, trustedurl is set to:

trustedurl==ldap://demo.siroe.com:389/cn=SMIME Admin, ou=people, 
o=demo.siroe.com,o=demo?cacertificate;binary?sub?
(objectclass=certificationAuthority)