SHA1 AES192 decryption problems
peteryzwei via Net-snmp-coders <[email protected]>
| Newsgroups | gmane.network.net-snmp.devel |
|---|---|
| Message-ID | <[email protected]> |
hello,I am using Net-snmp 5.8 and for these 2 auth/priv combinationsSHA1 AES192SHA1 AES256
decryption always fails on receiving an encrypted message. sc_decrypt() is successful but the parse in snmpv3_scopedPDU_parse() fails on ASN error.
I built net-snmp on windows OS 10 home.
I use wireshark and it has no problem decrypting the messages from the SNMP browser, so I know the pass phrases are correct.
I've tried other combinations successful, such as SHA1 AES128, SHA256 AES256, SHA224 AES192, etc.So the 2 combinations above seem to have problems.
I use function usm_parse_create_usmUser("", "shaaes192 SHA 1234567890 AES192 1234567890")to create the USM user. There is no error on creation. I see that usm_extend_user_kul() is called for the 2 cases, whereasit is not called for other combinations. Could there be a bug in that function ?
You can try to reproduce the problem by simply creating a user with those auth/priv combination and send a SNMP message froma browser.
regards,Peter
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