[Help-gnu-radius] authentication problem

[ng wai wing]

--I am sorry to ask for help again and again.
--I really tried my best to figure out the problem, but i fail.
--can anyone tell me what should be the problem??

--I use local SQL for password without encryption.
DEFAULT Auth-Type = Local,
        Password-Location = SQL,
        Simultaneous-Use = 1
        Service-Type = Framed-User,
        Framed-Protocol = PPP

--"clients" file:
localhost          aaa

--when i try to authenticate....
address@hidden radlib]# radauth -v -slocalhost:aaa Nick debug
server 127.0.0.1:1645
send code 1 (RT_AUTHENTICATION_REQUEST)
      send: User-Name = Nick
      send: Password = debug
      send: NAS-Port-Id = 0
radtest: warning: Received invalid reply digest from server
recv code 3 (RT_AUTHENTICATION_REJECT)
      recv: Reply-Message = \015\012Access denied\015\012
expect 2
got    3
FAIL

--Here is my "radius.log" :

Jul 02 10:59:05: Main.debug: radiusd.c:1297:rad_spawn_child: started handler at
pid 10635
Jul 02 10:59:05: Auth.debug: auth.c:753:rad_authenticate: auth: Nick
@ul 02 10:59:05: Auth.debug: auth.c:258:rad_check_password: radreq->request=??

Jul 02 10:59:05: Auth.debug: auth.c:262:rad_check_password: decrypt the password
8\l 02 10:59:05: Auth.debug: auth.c:266:rad_check_password: auth_item=??

Jul 02 10:59:05: Auth.debug: auth.c:1297:req_decrypt_password:
req->vector=Vj5k}[<8?]???1  
`      2, req->secret=aaa                                                      
          
8\l 02 10:59:05: Auth.debug: auth.c:268:rad_check_password:
userpass=p±au????i,?x, auth_item=??
Jul 02 10:59:05: Auth.debug: auth.c:309:rad_check_password: auth_type=0,
userpass=p±au????i,?x, name=N
ick, password=debug
Jul 02 10:59:05: Auth.debug: auth.c:351:rad_check_password:   auth: Local
Jul 02 10:59:05: Auth.debug: auth.c:953:sfn_validate: 1 -> 17
Jul 02 10:59:05: Auth.debug: auth.c:983:sfn_validate: 17 -> 17
Jul 02 10:59:05: Auth.notice: Login incorrect: [Nick/p±au????i,?x]: CLID unknown
(from nas local)
Jul 02 10:59:05: Auth.debug: auth.c:1267:sfn_reject: REJECT: Nick
Jul 02 10:59:05: Main.debug: radiusd.c:1325:rad_child_cleanup: child 10635 
exited: 0

--Does it means that i can't decrypt the password transmitted??
--How to solve??
--THX~~~