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# AVL AES Key Handling
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# AVL AES Key Handling
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```mermaid
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```mermaid
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sequenceDiagram
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participant "Device" as Dev
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participant "Device" as Dev
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participant "Device TCP Session" as Dev_TCP
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participant "Device TCP Session" as Dev_TCP
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participant "D2Sphere TCP Session" as D2S_TCP 
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participant "D2Sphere TCP Session" as D2S_TCP 
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