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Cryptographic Security Architecture: Design and Verification phần 2

Đây là loại thiết kế kiến trúc hệ thống an ninh đã được thực hiện nổi tiếng của Sebastien le Prestre de Vauban, một phần có pháo đài của NeufBrisach trên biên giới với Thụy Sĩ Pháp được mô tả trên trang bìa. | 1.4 The Object Model 15 handles Keyset database Certificate object Pub.key object Figure 1.12. Key container objects. 1.4.5 Security Attribute Containers Security attribute containers certificate objects like keyset objects are built on the repository architectural model and contain a collection of attributes that are attached to a public private key or to other information. For example signed data often comes with accompanying attributes such as the signing time and information concerning the signer of the data and the conditions under which the signature was generated. The most common type of security attribute container is the public-key certificate which contains attribute information for a public and by extension private key. Other attribute containers are certificate chains ordered sequences of certificates certificate revocation lists CRLs certification requests and assorted other certificate-related objects. 1.4.6 The Overall Architectural and Object Model A representation of some of the software architectural models discussed earlier mapped onto cryptlib s architecture is shown in Figure 1.13. At the upper levels of the layered model Section 1.2.4 are the envelopes implementing the pipe-and-filter model Section 1.2.1 and communicating through the distributed process model Section 1.2.6 . Below the envelopes 16 1 The Software Architecture are the action objects one of them implemented through a smart card that perform the processing of the data in the envelopes. Distributed process Pipe-and-filter Object-oriented Figure 1.13. Overall software architectural model. Not shown in this diagram are some of the other architectural models used which include the event-based model Section 1.2.3 used for general interobject communications the repository model Section 1.2.5 used for the keyset that supplied the public key that is used in the third envelope and the forwarder-receiver model Section 1.2.7 which is used to manage communications between cryptlib and the .