name: NTP
full_form: Network Time Protocol
context: D.3.2.2-1, respectively) and encoded as integers as described in annex B of 3GPP TS 33.220 [17]. P5 is the integer representing the current key period number since 0h on 1 January 1900, which may be calculated as: P5 = Floor ( ( TIME - P4 ) / P3 ) Where TIME is a NTP timestamp, i.e., a number in seconds relative to 0h on 1 January 1900. P4 is encoded as described in annex B of 3GPP TS 33.220 [17]. NOTE 2: When used to generate a UID for encrypting using a MIKEY payload, P1 will commonly be the 'ID Data' from the IDRr payload, P2 will be the encoded 'ID Data' from the IDRkmsr payload, and TIME will be the NTP timestamp within the MIKEY payload. NOTE 3: When used to generate a UID for signing a MIKEY payload, P1 will commonly be the 'ID Data' from the IDRi payload, P2 will commonly be the 'ID Data' from the IDRkmsi payload, and TIME will be the NTP timestamp within the MIKEY payload.
description: Network Time Protocol (NTP) synchronizes computer clocks over the internet. It ensures all systems have a consistent and accurate time reference.
explanation: The text describes NTP as a protocol used for time synchronization, aligning with the definition of a protocol as a set of rules governing data transmission.
section_title: F.2.1.1	Overview
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