C# OpenLDAP Error: unicodePwd: attribute type undefined-CodePudding

I am trying to change the user password of OpenLDAP from ASP.NET Core Web API using the library Novell.Directory.Ldap. OpenLDAP is configured on Ubuntu 18.04 with SSL enabled. So I connect using the option SecureSocketLayer = true and Port = 636. Following is the code to change the password:

string oldPassword = '"'   OldPassword   '"'; 
string newPassword = '"'   NewPassword   '"'; 
var oldPasswordbytes = Encoding.Unicode.GetBytes(oldPassword);
var newPasswordbytes = Encoding.Unicode.GetBytes(newPassword);

LdapModification[] modifications = new LdapModification[2];
LdapAttribute deletePassword = new LdapAttribute("unicodePwd", oldPasswordbytes);
modifications[0] = new LdapModification(LdapModification.Delete, deletePassword);
LdapAttribute addPassword = new LdapAttribute("unicodePwd", newPasswordbytes );
modifications[1] = new LdapModification(LdapModification.Add, addPassword);
connection.Modify(userDn, modifications);

This code goes well with the AD domain. But for OpenLDAP it is giving error:

unicodePwd: attribute type undefined

I tried userPassword instead of unicodePwd but the same type of error. Does this error belong to an attribute not exist in OpenLDAP or I cannot use this code for OpenLDAP? How to change the OpenLDAP user password using C# library?

CodePudding user response：

Only Active Directory requires the special format for the password value. For OpenLDAP, just use a regular string without quotes.

Also, OpenLDAP uses the userPassword attribute.