TABLE OF CONTENTS

UUIDs/UUIDs.V6 [ Packages ]

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DESCRIPTION

    UUIDv6 as described in RFC-9562 5.6:
    https://www.ietf.org/rfc/rfc9562.html#section-5.6

SOURCE

package UUIDs.V6 is

UUIDs.V6/V6.UUID6 [ Subprograms ]

[ Top ] [ UUIDs.V6 ] [ Subprograms ]

SOURCE

   function UUID6 return UUID;

OPTIONS

    The default source of randomness is a pseudorandom number generator.
    If all random data should be retrieved from system random, refer to

RETURN VALUE

    UUIDs.UUID - The UUIDv6 generated by the function.

EXAMPLE

   --    --  Generate a UUID based on the current time.
   --    My_UUID : UUID := V6.UUID6;

SEE ALSO

    Please see RFC-9562 5.6 for a full description:
    https://www.ietf.org/rfc/rfc9562.html#section-5.6

NOTES

    As per RFC-9562 5.6, it is only recommended to utilize UUIDv6 if
    compatibility with UUIDv1 is required.  Otherwise, please consider
    using UUIDv7 instead for random + time based UUIDs for improved
    entropy characteristics over UUIDv1 or UUIDv6.

FUNCTION

    UUIDv6 is similar field-compatible with UUIDv1 except re-ordered for
    improved DB locality.  The timestamp still utilizes the Gregorian
    epoch with a clock sequence and Node ID ergo documentation listed for
    UUIDv1 applies to UUIDv6.

    In this library, the clock sequence is completely random and will be
    regenerated with each generation.  The Node data is randomly-generated
    once at at the creation of the first v1 or v6 UUID. Any subsequent
    UUID will have the same Node data until the program ends.