Change kerberos password

[Luís Eterovick]

Hello,

im using pam_krb5_migrate module, and id like to add some new functionality
to it. Its supposed to create a kerberos principal when the user logs in the
system, using the same credentials. I want it to check if password is the
same, if the principal already exists, and if it yes, update the password to
the new one. The module gets the authentication token with this, and stores
password in the variable *pass*.

*pam_get_item(pamh, PAM_AUTHTOK, (const void **)&pass);*

what function(s) can i use to change kerberos password using this
information?

Thanks in advance.
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