2.2.2 Server NTP Response

The subfields of the Authenticator field of the Server NTP Response message include the following.


0


1


2


3


4


5


6


7


8


9

1
0


1


2


3


4


5


6


7


8


9

2
0


1


2


3


4


5


6


7


8


9

3
0


1

Key Identifier

Crypto-Checksum (16 bytes)

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Key Identifier (4 bytes): A 32-bit unsigned integer in little-endian byte order (least significant byte first). It identifies the cryptographic key used to generate the crypto-checksum, as specified in section 2.2.1. For more information, see section 3.1.5.<4>

Crypto-Checksum (16 bytes): A 128-bit crypto-checksum computed by an encryption procedure. For more information, see section 3.2.5.

All other fields are returned according to [RFC1305].<5>

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