EngineId (Manager and Agent) in case of Informs

Hi,

I am using net-snmp manager to receive informs.
The engineId String value is being logged as some junk value
dumph_recv: msgAuthoritativeEngineID
dumpx_recv: 04 0D 2E 2E 2E E5 2E 35 2E 2E 2E ED 2E 4E 43
dumpv_recv: String: ...å.5...í.NC


But my custom agent(other than net-snmp) was not able to decode the engineId
from the received packet as it is.
It prints some other junk
Context Engine Id = ~@^@^Gå~@õú~^L~XMNC


Why it differs? What might be the cause for this issue?

If I use some other manager which takes engineId as input in the string
format , it works fine.

Kindly help .

With Thanks ,
Jc