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[v2,1/2] hwrng: iproc-rng200 - Set the quality value

Message ID 20200519212552.11671-2-l.stelmach@samsung.com
State Superseded
Headers show
Series [v2,1/2] hwrng: iproc-rng200 - Set the quality value | expand

Commit Message

Lukasz Stelmach May 19, 2020, 9:25 p.m. UTC 
The value was estimaded with ea_iid[1] using on 10485760 bytes read from
the RNG via /dev/hwrng. The min-entropy value calculated using the most
common value estimate (NIST SP 800-90P[2], section 6.3.1) was 7.964464.

[1] https://github.com/usnistgov/SP800-90B_EntropyAssessment
[2] https://csrc.nist.gov/publications/detail/sp/800-90b/final

Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
---
 drivers/char/hw_random/iproc-rng200.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/char/hw_random/iproc-rng200.c b/drivers/char/hw_random/iproc-rng200.c
index 32d9fe61a225..95669ece050f 100644
--- a/drivers/char/hw_random/iproc-rng200.c
+++ b/drivers/char/hw_random/iproc-rng200.c
@@ -199,6 +199,7 @@  static int iproc_rng200_probe(struct platform_device *pdev)
 	priv->rng.read = iproc_rng200_read,
 	priv->rng.init = iproc_rng200_init,
 	priv->rng.cleanup = iproc_rng200_cleanup,
+	priv->rng.quality = 1000,
 
 	/* Register driver */
 	ret = devm_hwrng_register(dev, &priv->rng);