SD 2.5: Interface Description



		SD 2.5: Interface Description

SE2.5 - Schnittstellen beschreiben

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Contents
Product Flow
Handling
Roles
Methods

Tools Requirements
External Norms
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Contents		Product Flow Handling Roles Methods		Tools Requirements External Norms Links to the V-Model Mailinglist

Product Flow

From		Product		to		Methods	Tool Req.	Ext. Norms
Activity	State	Chapter	Title	Activity	State	Methods	Tool Req.	Ext. Norms
SD1	accepted	Existing	User Requirements	-	-			/ISO IEC 12207/ Devlp. Proc.: Sys. Arch. Design
SD2.4	accepted	Existing	System Architecture	-	-
SD2.1	being proc.	Existing	Interface Overview	-	-
-	-	All	Interface Description	SD2.6 SD3 SD4.2-SW CM4.3	being proc.	ACC ⁽⁵⁾ COM ⁽²⁾ DVER ⁽⁴⁾ FS ⁽¹⁾ IAM ⁽²⁾ SSM ⁽²⁾ STMO ⁽³⁾	SSD02 SSD22 SSD23 SSD27 SSD28 SSD29 SSD30 SSD31

+ "Chapter" are extra columns from the original printed version of GD 250

* Interface Description

All interfaces identified in the Interface Overview must be specified in the Interface Description. By taking into consideration the type of the individual interface and the type of the corresponding architecture elements, the relevant information about use, syntax and semantics of the interface has to be documented.

* Description of the Interfaces between the IT Security Measures and the Participating Architecture Elements

The interfaces of the IT security measures to the participating architecture elements have to be documented.

Roles

Role	Participation
System Designer	responsible

Methods

Product	Methods Allocation	Use
Chapter 2 Interface Description. Description of the interfaces	ACC - Analysis of Covert Channels ⁽⁵⁾	Generate
	COM - Class/Object Modeling ⁽²⁾	Generate
	DVER - Design Verification ⁽⁴⁾	Generate
	FS - Formal Specification ⁽¹⁾	Generate
	IAM - Interaction Modeling ⁽²⁾	Generate
	SSM - Subsystem Modeling ⁽²⁾	Generate
	STMO - State Modeling in the OO Field ⁽³⁾	Generate

Tools Requirements

Product	Functional Tools Requirements
Chapter 2 Interface Description. Description of the Interfaces	SSD02 - Supporting Specification of User Interfaces SSD22 - Supporting Class/Object Modeling SSD23 - Supporting Subsystem Modeling SSD27 - Supporting State Modeling in the Object-Oriented Field SSD28 - Supporting Interaction Modeling SSD29 - Formal Specification SSD30 - Formal Verification SSD31 - Analysis of Covert Channels

External Norms

Norm	Process	Chapter	Obs.
/ISO IEC 12207/	Development Process	System Architectural Design	(s. Part 3 - ISO 3.2.1)

Notes:

(1) Method FS is to be applied in case of special requirements with regard to correctness, e. g. based on very high criticality.

(2) The methods have to be applied in object-oriented developments.

(3) Method STMO is to be applied for the dynamic system modeling in object-oriented procedures.

(4) A formal specification on two different abstraction levels is required for the application of DVER. Because of the great effort, the most critical portions of a specification have to be selected for which the DVER has to be applied. According to [ITSEC], method DVER is required for the proof of the formal security model with the evaluation level E4, for the proof of consistency between security model and preliminary design DVER is required with the evaluation level E6.

(5) Method ACC must be applied according to [ITSEC].

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This page online • GDPA Online • Last Updated 07.Mar.2004 by C. Freericks