48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
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# Copyright (c) 2019, Arm Limited.
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# Copyright (c) 2020, Linaro Limited
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from enum import Enum
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import cbor
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class SwComponent(int, Enum):
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"""
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Software component property IDs specified by
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Arm's PSA Attestation API 1.0 document.
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"""
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TYPE = 1
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MEASUREMENT_VALUE = 2
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VERSION = 4
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SIGNER_ID = 5
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MEASUREMENT_DESCRIPTION = 6
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def create_sw_component_data(sw_type, sw_version, sw_measurement_description,
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sw_measurement_value, sw_signer_id):
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# List of software component properties (Key ID + value)
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properties = {
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SwComponent.TYPE: sw_type,
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SwComponent.VERSION: sw_version,
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SwComponent.SIGNER_ID: sw_signer_id,
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SwComponent.MEASUREMENT_DESCRIPTION: sw_measurement_description,
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}
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# Note: The measurement value must be the last item of the property
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# list because later it will be modified by the bootloader.
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properties[SwComponent.MEASUREMENT_VALUE] = sw_measurement_value
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return cbor.dumps(properties)
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