%% usm.conf
%% The data corresponds to the relevant parts of the usmUserTable 
%% defined in SNMP-USER-BASED-SM-MIB.
%% 
%% {EngineID, UserName, AuthP, AuthKey, PrivP, PrivKey}.
%% {EngineID, UserName, SecName, AuthP, AuthKey, PrivP, PrivKey}.
%% 
%% The first case is when we have the identity-function (SecName = UserName)!
%% 
%% EngineID    -> string()
%% UserName    -> string()
%% SecName     -> string()
%% AuthP       -> usmNoAuthProtocol | usmHMACSHAAuthProtocol | 
%%                usmHMACMD5AuthProtocol
%% AuthKey     -> string() (The user's secret localized authentication key)
%%                length depends on AuthP:
%%                  usmNoAuthProtocol      - any
%%                  usmHMACSHAAuthProtocol - 16
%%                  usmHMACMD5AuthProtocol - 20
%% PrivP       -> usmNoPrivProtocol | usmDESPrivProtocol
%% PrivKey     -> string() (The user's secret localized encryption key)
%%                length depends on PrivP:
%%                  usmNoPrivProtocol  - any
%%                  usmDESPrivProtocol - 16
%% 

%% example
{"manager engine", "initial", "initial", 
 usmNoAuthProtocol, "", 
 usmNoPrivProtocol, ""}.