[doc] Revise and detail TRNG configuration for integration spec #861
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CC: @johannheyszl |
bharatpillilli
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amullick007
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amullick007
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@amullick007 or @varuns-nvidia - can one of you please add akash to this? dont know his github handle |
bharatpillilli
previously approved these changes
Apr 27, 2025
This commit revises and expands the TRNG configuration documentation,
incorporating detailed explanations for both the initial ROM-based setup
and later FIPS-compliant configurations.
Key updates include:
- Clarified the internal TRNG's role in ROM for Control Flow Integrity
(CFI) countermeasures, noting its non-FIPS-compliant nature at this stage.
- Provided detailed calculations and recommended example thresholds for
the adaptive proportion test and repetition count test during ROM
operation.
- Introduced a "FIPS considerations" section, which details:
- The required TRNG re-initialization steps for FIPS compliance.
- Comprehensive explanation of adaptive self-test window sizes
(ENTROPY_TEST_WINDOW vs. ACTUAL_TEST_WINDOW).
- Configuration options for `CONF.THRESHOLD_SCOPE` (aggregating per
symbol vs. handling each noise source separately).
- Formulas for configuring FIPS-compliant adaptive self-test thresholds.
- Added a "Recommended configuration" subsection under FIPS considerations
for both adaptive and repetition count tests.
Signed-off-by: Miguel Osorio <[email protected]>
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calebofearth
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Apr 29, 2025
bharatpillilli
approved these changes
Apr 29, 2025
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This commit revises and expands the TRNG configuration documentation, incorporating detailed explanations for both the initial ROM-based setup and later FIPS-compliant configurations.
Key updates include:
CONF.THRESHOLD_SCOPE(aggregating per symbol vs. handling each noise source separately).