Explanation/Reference:
Key Identifier (KeyID)
This is an 8-bit unsigned value used to uniquely identify an OSPFv2 SA and is configured either by the router administrator (or, in the future, possibly by some key management protocol specified by the IETF).
The receiver uses this to locate the appropriate OSPFv2 SA touse. The sender puts this KeyID value in the OSPF packet based on the active OSPF configuration.
Authentication Algorithm
This indicates the authentication algorithm (and also the cryptographic mode, such as HMAC) to be used.
This information SHOULD never be sent over the wire in cleartext form. At present, valid values are Keyed-MD5, HMAC-SHA-1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512.
Authentication Key
This is the cryptographic key used for cryptographic authentication with this OSPFv2 SA. This value SHOULDnever be sent over the wire in cleartext form. This is noted as "K" in Section 3.3below.
Key Start Accept
The time that this OSPF router will accept packets that have been created with this OSPF Security Association.
Key Start Generate
The time that this OSPF router will begin using this OSPF Security Association for OSPF packet generation.
Key Stop Generate
The time that this OSPF router will stop using this OSPF Security Association for OSPF packet generation.
Key Stop Accept
The time thatthis OSPF router will stop accepting packets generated with this OSPF Security Association.
References: