By Heinz Johner; et al
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Additional info for Deploying a public key infrastructure
2 Business processes If an organization determines to proceed with a PKI, what should it do? This process is called deployment of a PKI. Some issues concerning how to deploy a PKI in an organization are discussed in this section. Further suggestions and discussions are in Chapter 4, “PKI deployment” on page 59. Usually, the deployment of a PKI is driven by some business or security need. Organizations have to be clear about their business requirements and how technology can suit their needs. The business needs may be due to a corporate e-business strategy, a country’s legal requirements, or a particular application’s security needs.
This field must be critical. The above standard extension fields are considered especially important in the PKIX standard. Besides the above fields, other standard extensions are defined: Authority Key Identifier (authorityKeyIdentifier), Subject Key Identifier (keyIdentifier), Private Key Usage Period (PrivateKeyUsagePeriod), Certificate Policies (certificatePolicies), Policy Mappings (PolicyMappings), Issuer Alternative Names (IssuerAltName), Subject Directory Attributes (SubjectDirectoryAttributes), Policy Constraints (PolicyConstraints), Extended Key Usage Field (extKeyUsage), and CRL Distribution Points (cRLDistributionPoints).
Establish a session key (or variation) to encrypt/decrypt further communications. 3. Authenticate previous communication. SSL provides end-to-end encryption for applications, such as HTTP, FTP, Telnet, and so on. SSL provides different encryption algorithms depending on the application required. The integrity of encrypted messages is provided with the use of message authentication codes (MAC). Server and client authentication capabilities are provided with SSL. During a PKI deployment, data encryption requirements at the session protocol level can vary from organization to organization.