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Preserving Software Quality Characteristics from Requirements ...

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EWSA06<br />

Schmidt,<br />

Wentzlaff<br />

Introduction<br />

Problem Frames<br />

Application<br />

Example: Chat<br />

<strong>Software</strong><br />

Development<br />

Method<br />

<strong>Quality</strong><br />

Frames<br />

HCIFrames<br />

(Concretized)<br />

Security<br />

Problem Frames<br />

Conflict<br />

Resolution<br />

Derive Design<br />

Composed<br />

Architecture<br />

Conclusion &<br />

Future Work<br />

Instance Example: Concretized Security Problem<br />

Diagram for Pseudonymity<br />

Chat<br />

User<br />

ID<br />

subject<br />

identity<br />

pseudonym<br />

Nickname<br />

malicious subject<br />

Receiving<br />

users<br />

Duck<br />

CSR User’s nickname shall be known,<br />

but ID shall be unknown to receiving users.<br />

Elephant<br />

CSR<br />

blue animal<br />

Mouse<br />

8 / 15

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