Output from the ldapsearch command is represented by the following basic forms:
<attribute description>: <attribute value> <attribute description>:: <base64-encoded-value> <attribute description>:< <URL>
The value may be specified as UTF-8 text or as base64 encoded data, or a URI may be provided to the location of the attribute value.
Here is an example of text only output from an ldapsearch command:
dn: cn=Bjorn J Jensen,dc=example,dc=com cn: Bjorn J Jensen cn: Bjorn Jensen objectclass: person sn: Jensen
If a value contains a non-printing character, or begins with a space or a colon ‘:’, the <attribute description> is followed by a double colon and the value is encoded in base 64 notation. For example, the value " begins with a space" would be encoded like this:
cn:: IGJlZ2lucyB3aXRoIGEgc3BhY2U=
More information can be found here: