Credentials (usernames and passwords) for standard Linux accounts in Messaging are stored in /etc/passwd, /etc/shadow, and /etc/group, plus the backup files for those files, for example, /etc/group- and /etc/passwd-.
Messaging does not use a database to store credentials information.
Passwords for local accounts are stored in /etc/shadow. Passwords in /etc/shadow are stored as a one-way hash. The file /etc/shadow is root restricted.
Usernames and group membership for local Messaging accounts can be viewed by any user logged into Linux.
ASG accounts have additional information stored in files that are AES encrypted.
Credentials configured for an external AAA server such as RADIUS or LDAP are stored in the external server.
For more information, see