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<title>$SECURITY_DESCRIPTOR (0x50) - Attribute - NTFS Documentation</title>
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<td class="numeric">0x00</td>
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<td class="numeric">1</td>
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<td>Revision (a)</td>
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<td class="numeric">0x01</td>
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<td class="numeric">1</td>
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<td class="numeric">0x02</td>
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<td class="numeric">1</td>
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<td class="numeric">0x03</td>
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<td class="numeric">1</td>
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<td class="numeric">2</td>
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<td>Control Flags (b)</td>
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<td class="numeric">0x04</td>
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<td class="numeric">0x0C</td>
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<td class="numeric">4</td>
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<td>Offset to SACL</td>
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<td class="numeric">0x10</td>
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<td class="numeric">4</td>
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<td>ACL Permissions</td>
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<td>Offset to DACL</td>
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<p>The header field is probably some flags, but I can't find any reference to
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Header 1 always seems to be 0x01<br>
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Header 2 always seems to be 0x00<br>
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Header 3 is either 0x04 or 0x14. If it's 0x04 then there will be no auditing
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information; if it is 0x14, there will.<br>
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Header 4 always seems to be 0x80<br>
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There are four offset fields. If there are four bits set in the header field,
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then all four offsets are in use.<br>
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If there are three bits set, then three offsets are in use. Coincidence?</p>
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(b) Usually 0x4 (DACL Present), or 0x14 (DACL Present + SACL Present). See Flags below.<br>
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(c) This refers to the Auditing ACL<br>
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(d) This refers to the Permissions ACL
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