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<p>from the provision of technically sound <a href="page.php?w=cryptography">cryptosystems</a> and their proper use.  This includes ensuring message confidentiality and authenticity.<br/>
* <b><a href="page.php?w=Tempest_%28codename%29">Emission security</a> (EMSEC)</b>: The protection resulting from all measures taken to deny unauthorized persons information of value that might be derived from communications systems and cryptographic equipment intercepts and the interception and analysis of compromising emanations from cryptographic equipment,</p><p>
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