1. to identify the person and authority (Authentication & Authorization) is specified. The contact person is the person that said the actual claims and have powers based on actual claims discussed (in comparison to show the identification card that contains the images stuck together or use a locking system which is open to only key, etc.). 2. confidentiality of information (Confidentiality) is to maintain the confidentiality of the information stored or transmitted over the network by preventing others who do not have permission to see the stealth (comparable to the sealed envelope. Using opaque letter assessments Invisible ink writing, etc.). 3. to maintain the accuracy of the data (Integrity) is to protect data from being modified by the test (compare with ink, if deleted, will cause a bad erase, etc.). 4. to prevent any protest or claim of responsibility (Non-repudiation) is to prevent rejection is not sending or receiving data from the various parties involved, or to prevent false claims that. Send or receive data (comparable to the registered mailing address, etc.).
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