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Table Of Contents  CertiGuide to Security+
 9  Chapter 4:  Basics of Cryptography (Domain 4.0; 15%)
      9  4.5  Key Management and Certificate Lifecycles

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4.5.8  Renewal
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4.5.10  Key Usage
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4.5.9  Destruction

Destruction refers to the permanent removal of a key or certificate that you no longer need. This is accomplished by destroying the private key and any certificates. In the case of public keys, they tend to be difficult to destroy since they are sometimes passed around indiscriminately (Google’s Usenet archives are probably full of them). However, if the private key is destroyed, it is not necessary to destroy all copies of the public key, since, due to the way asymmetric cryptography works, no compromise of information will be possible without the other half of the key pair.

Destruction

Destruction is the process of permanently removing a key or certificate that is no longer needed.



Previous Topic/Section
4.5.8  Renewal
Previous Page
Pages in Current Topic/Section
1
Next Page
4.5.10  Key Usage
Next Topic/Section

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