IBM Computer Hardware 2 Uživatelský manuál stáhnout pdf (Strana 403)

CCA Release 2.54

The entire access-control-point structure is comprised of a header, followed by one

or more access-control-point segments. The header indicates how many segments

are contained in the entire structure.

The layout of this structure is illustrated in Figure B-33.

Bytes Field

┌───────┐ ──┐

2 │ │ Number of segments │

├───────┤ ├─ Header

2 │ │ Reserved │

├───────┤ ──┘ ──┐

2 │ │ Start bit number │

├───────┤ │

2 │ │ End bit number │

├───────┤ │ First

2 │ │ Number of bytes ├─ bitmap

├───────┤ │ segment

2 │ │ Reserved │

├───────┴──────────────────────────── ─ ─────────────┐ │

variable│ │ Bitmap data │

├───────┬──────────────────────────── ─ ─────────────┘ ─┘

├───────┤ ──┐

2 │ │ Start bit number │

├───────┤ │

2 │ │ End bit number │

├───────┤ │ Last

2 │ │ Number of bytes ├─ bitmap

├───────┤ │ segment

2 │ │ Reserved │

├───────┴──────────────────────────── ─ ─────────────┐ │

variable│ │ Bitmap data │

└──────────────────────────────────── ─ ─────────────┘ ─┘

Figure B-33. Access-Control-Point Structure

Default Role Contents

The default role will have the following characteristics.

 The role ID will be DEFAULT.

 The required authentication strength level will be zero.

 The role will be valid at all times and on all days of the week.

 The only functions that will be permitted are those related to access-control

initialization. This will guarantee that the owner will initialize the Coprocessor

before any useful cryptographic work can be done. This requirement prevents

security “accidents” in which unrestricted default authority might accidentally be

left intact when the system is put into service.

The access-control points that are enabled in the default role are shown in

Figure B-34.

Figure B-34 (Page 1 of 2). Functions Permitted in Default Role

Code Function Name

X'0107' PKA96 One Way Hash

X'0110' Set Clock

X'0111' Reinitialize Device

X'0112' Initialize access-control system roles and profiles

Appendix B. Data Structures B-31

1 2 ... 398 399 400 401 402 403 404 405 406 407 408 ... 507 508

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