wpa_supplicant using EAP-TTLS problem

[王奕元]

Hello.

I meet a problem about EAP-TTLS authentication.
My wireless card is DWL-G650, using Atheros chipset.
Following is my wpa_supplicant conf:

network={
    ssid="MyAP"
    scan_ssid=1
    key_mgmt=WPA-EAP
    eap=TTLS
    identity="testuser"
    password="testpassword"
    ca_cert="/etc/cert/ca.pem"
    phase2="auth=MD5"
}

on my RADIUS server,
I set following in user file?
DEFAULT Auth-Type = System
        Fall-Through = 1
"testuser"    Cleartext-Password := "testpassword"

After I implement: ./wpa_supplicant -i ath0 -c eap-ttls.conf
the screen shows:

CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
Associated with 00:19:5b:ec:9a:70
CTRL-EVENT-EAP-STARTED EAP authentication started
CTRL-EVENT-EAP-METHOD EAP vendor 0 method 21 (TTLS) selected
OpenSSL? tls_connection_ca_cert - Failed to load root certificates
error?02001002?system library?fopen?No such file or directory
OpenSSL? pending error? error?2006D080?BIO routines?BIO_new_file?no such
file
OpenSSL? pending error? error?0B084002? x509 certificate
routines?X509_load_cert_crl_file?system lib
OpenSSL? tls_load_ca_der - Failed load CA in DER format
error?02001002?system library?fopen?No such file of directory
OpenSSL? pending error? error?20074002?BIO routines?FILE_CTRL?system lib
OpenSSL? pending error? error?0B06F002?x509 certificate
routines?X509_load_cert_file?system lib
TLS? Failed to set TLS connection parameters
EAP-TTLS? Failed to initialize SSL.

Are there something lack in my computer?
Or my conf setting have something missed?

Thanks for youring answering.
Regard.
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