Decimal,Name,Description,Reference
0,Reserved,,[IANA]
1,per-doa,"perform DOA (e.g., sign)",[Carlisle_Adams]
2,rec-doa,receive DOA (verify sig),[Carlisle_Adams]
3,per-doa-ciph,perform DOA with DI over ciphertext,[RFC2479]
4,rec-doa-ciph,verify DOA with DI over ciphertext,[RFC2479]