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  2. Time stamp protocol - Wikipedia

    en.wikipedia.org/wiki/Time_stamp_protocol

    The timestamp is the signer's assertion that a piece of electronic data existed at or before a particular time. The protocol is defined in RFC 3161. One application of the protocol is to show that a digital signature was issued before a point in time, for example before the corresponding certificate was revoked.

  3. Network Time Protocol - Wikipedia

    en.wikipedia.org/wiki/Network_Time_Protocol

    t 0 is the client's timestamp of the request packet transmission, t 1 is the server's timestamp of the request packet reception, t 2 is the server's timestamp of the response packet transmission and; t 3 is the client's timestamp of the response packet reception. [1]: 19

  4. Time server - Wikipedia

    en.wikipedia.org/wiki/Time_server

    A typical commercial time server in rackmount form factor. (Elproma front panel). A time server is a server computer that reads the actual time from a reference clock and distributes this information to its clients using a computer network. The time server may be a local network time server or an internet time server.

  5. Timestamping (computing) - Wikipedia

    en.wikipedia.org/wiki/Timestamping_(computing)

    In computing, timestamping refers to the use of an electronic timestamp to provide a temporal order among a set of events.. Timestamping techniques are used in a variety of computing fields, from network management and computer security to concurrency control.

  6. ANSI ASC X9.95 Standard - Wikipedia

    en.wikipedia.org/wiki/ANSI_ASC_X9.95_Standard

    Generating a timestamp for unsigned data. Before a timestamp-service commences operations, the Time Stamp Authority calibrates its clock(s) with an upstream time source entity, such as a legally defined master clock for the jurisdiction the TSA is time-stamping evidence for.

  7. List of HTTP header fields - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_header_fields

    If a web server responds with Cache-Control: no-cache then a web browser or other caching system (intermediate proxies) must not use the response to satisfy subsequent requests without first checking with the originating server (this process is called validation). This header field is part of HTTP version 1.1, and is ignored by some caches and ...

  8. Internet Control Message Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Control_Message...

    Originate timestamp is the time the sender last touched the message before sending it. Receive timestamp is the time the echoer first touched it on receipt. Transmit timestamp is the time the echoer last touched the message on sending it. All timestamps are in units of milliseconds since midnight UT.

  9. Timestamp - Wikipedia

    en.wikipedia.org/wiki/Timestamp

    A timestamp is a sequence of characters or encoded information identifying when a certain event occurred, usually giving date and time of day, sometimes accurate to a ...