NASD Requests (Security Processing)

A NASD RPC request contains the following elements:

• Key type: Indicates if this request is authorized by a capability or a higher element of the key hiearchy.
• Actual protection: Indicates what protection options were used with this request.
• Capability arguments: See capabilitity arguments
• Bulk Data: Bulk data being transferred.
• Nonce: A unique timestamp for the request. Enables a drive to detect replays and delayed requests.
• Digest: When the protection options include an integrity option, the digest field is used to store a message digest of the protected fields.
  
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