GSSAPI ::= CHOICE { negTokenInit [0] ANY, negTokenTarg [1] NegTokenTarg } NegTokenTarg ::= SEQUENCE { negResult [0] ENUMERATED OPTIONAL, supportedMech [1] OBJECT IDENTIFIER OPTIONAL, responseToken [2] OCTET STRING OPTIONAL ({neg_token_targ_resp_token}), mechListMIC [3] OCTET STRING OPTIONAL }