encryption generation errors

Hello All,

I can run a "c" program with authNoPriv successfully;
I modified it to use "authPriv" and the generate_ku()
function fails.

Here is the relevant code snippet:
----------------
cnst char *our_v3_passphrase = "The Net-SNMP Demo Password";
/* set the encryption method to DES */
    session.securityPrivProto = usmDESPrivProtocol;
    session.securityPrivProtoLen = sizeof(usmDESPrivProtocol)/sizeof(oid);
   session.securityPrivKeyLen = USM_PRIV_KU_LEN;
    
	
/* set the encryption to a DES encrypted version of our
       passphrase */
    if (generate_Ku(session.securityPrivProto,
                    session.securityPrivProtoLen,
                    (u_char *) our_v3_passphrase, strlen(our_v3_passphrase),
                    session.securityPrivKey,
                    &session.securityPrivKeyLen) != SNMPERR_SUCCESS)
	{
==========
Please note the following command works:
snmpget -v 3 -u MD5DESUser -a MD5 -A "The Net-SNMP Demo Password" -x DES -X
"The Net-SNMP Demo Password" -l authPriv test.net-snmp.org system


Please help!

What I am missing in my call? 

Thanks!

--daulat  



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