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<?php
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<?php
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/*
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/*
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* UUID & MAC Utils
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* UUID & MAC Utils
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* Copyright 2017 - 2023 Daniel Marschall, ViaThinkSoft
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* Copyright 2017 - 2023 Daniel Marschall, ViaThinkSoft
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* Version 2023-09-23
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* Version 2023-10-05
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*
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* You may obtain a copy of the License at
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*
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*
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NameSpaceUuid&lt;DNS&gt;          := "6ba7b810-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;DNS&gt;          := "6ba7b810-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;URL&gt;          := "6ba7b811-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;URL&gt;          := "6ba7b811-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;OID&gt;          := "6ba7b812-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;OID&gt;          := "6ba7b812-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;X500&gt;         := "6ba7b814-9dad-11d1-80b4-00c04fd430c8".
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NameSpaceUuid&lt;X500&gt;         := "6ba7b814-9dad-11d1-80b4-00c04fd430c8".
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<u>As defined by <a href="https://datatracker.ietf.org/doc/draft-ietf-uuidrev-rfc4122bis/">draft-ietf-uuidrev-rfc4122bis-11</a>:</u>
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<u>As defined by <a href="https://datatracker.ietf.org/doc/draft-ietf-uuidrev-rfc4122bis/11/">draft-ietf-uuidrev-rfc4122bis-11</a>:</u>
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UUIDv8(<i>HashAlgo</i>, <i>NameSpaceUuid</i>, <i>Data</i>) := <abbr title="Adds UUID variant 0b10 and version 8">ConvertRawBytesToUuid_v8</abbr>(<i>HashAlgo</i>( Binary[HashSpaceUuid&lt;<i>HashAlgo</i>&gt;] || Binary[<i>NameSpaceUuid</i>] || <i>Data</i> )).
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UUIDv8(<i>HashAlgo</i>, <i>NameSpaceUuid</i>, <i>Data</i>) := <abbr title="Adds UUID variant 0b10 and version 8">ConvertRawBytesToUuid_v8</abbr>(<i>HashAlgo</i>( Binary[HashSpaceUuid&lt;<i>HashAlgo</i>&gt;] || Binary[<i>NameSpaceUuid</i>] || <i>Data</i> )).
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<?php
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<?php
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$tmp = [];
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$tmp = [];
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foreach (get_uuidv8_hash_space_ids() as list($algo,$space,$friendlyName,$author,$available)) {
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foreach (get_uuidv8_hash_space_ids() as list($algo,$space,$friendlyName,$author,$available)) {
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        echo $line;
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        echo $line;
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}
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}
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?>
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?>
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<u>Custom implementation ("Raw Hash"):</u>
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<u>As defined by <a href="https://datatracker.ietf.org/doc/draft-ietf-uuidrev-rfc4122bis/">draft-ietf-uuidrev-rfc4122bis-12</a>:</u>
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UUIDv8(<i>HashAlgo</i>, <i>NameSpaceUuid</i>, <i>Data</i>) := <abbr title="Adds UUID variant 0b10 and version 8">ConvertRawBytesToUuid_v8</abbr>(<i>HashAlgo</i>( Binary[<i>NameSpaceUuid</i>] || <i>Data</i> )).
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UUIDv8(<i>HashAlgo</i>, <i>NameSpaceUuid</i>, <i>Data</i>) := <abbr title="Adds UUID variant 0b10 and version 8">ConvertRawBytesToUuid_v8</abbr>(<i>HashAlgo</i>( Binary[<i>NameSpaceUuid</i>] || <i>Data</i> )).
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</pre></p>
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</pre></p>
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<style>
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<style>
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                        foreach ($tmp as $html) {
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                        foreach ($tmp as $html) {
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                                echo "\t\t$html\n";
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                                echo "\t\t$html\n";
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                        }
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                        }
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                }
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                }
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                echo "\t\t<option disabled>--- UUIDv8 (Raw Hash) ---</option>\n";
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                echo "\t\t<option disabled>--- UUIDv8 (defined by Internet Draft 12, Appendix C.2) ---</option>\n";
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                $tmp = [];
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                $tmp = [];
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                $algos = hash_algos();
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                $algos = hash_algos();
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                $algos[] = 'shake128';
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                $algos[] = 'shake128';
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                $algos[] = 'shake256';
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                $algos[] = 'shake256';
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                foreach ($algos as $algo) {
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                foreach ($algos as $algo) {
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                        $friendlyName = strtoupper($algo);
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                        $friendlyName = strtoupper($algo);
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                        if ($algo == 'shake128') $bits = 999;
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                        if ($algo == 'shake128') $bits = 999;
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                        else if ($algo == 'shake256') $bits = 999;
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                        else if ($algo == 'shake256') $bits = 999;
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                        else $bits = strlen(hash($algo, '', true)) * 8;
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                        else $bits = strlen(hash($algo, '', true)) * 8;
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                        if ($bits < 128) $friendlyName .= " (Small hash size! $bits bits)";
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                        if ($bits < 128) $friendlyName .= " (Small hash size! $bits bits)"; // <-- this is not described in Appendix B.2
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                        $space = $algo;
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                        $space = $algo;
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                        $tmp[$friendlyName] = '<option value="8_namebased_'.$space.'">'.htmlentities($friendlyName).'</option>';
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                        $tmp[$friendlyName] = '<option value="8_namebased_'.$space.'">'.htmlentities($friendlyName).'</option>';
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                }
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                }
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                natsort($tmp);
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                natsort($tmp);