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|System Administration Guide: Naming and Directory Services (NIS+)|
Credential information for principals is stored in a cred table. The cred table is one of the 16 standard NIS+ tables. Each domain has one cred table, which stores the credential information of client machines that belong to that domain and client users who are allowed to log into them. (In other words, the principals of that domain.) The cred tables are located in their domains' org_dir subdirectory.
For users, the cred table stores LOCAL credential information for all users who are allowed to log into any of the machines in the domain. The cred table also stores DES credential information for those users that have the domain as their home domain.
You can view the contents of a cred table with the niscat command, described in Chapter 19, Administering NIS+ Tables.
The cred table, as shown in Table 12-3, has five columns.
Table 12-3 NIS+ cred Table Credential Information
LOCAL. If the authentication type is LOCAL, the other columns contain a principal user's name, UID, and GID; the last column is empty.
DES. If the authentication type is DES, the other columns contain a principal's name, Secure RPC netname, public key, and encrypted private key. These keys are used in conjunction with other information to encrypt and decrypt a DES credential.