[PATCH 0/3] crypto: jitterentropy - bound collection loop

Nicolai Stange
2021-11-30T14:10:33Z

Hi,

the sampling loop in jent_gen_entropy() can potentially run indefinitely
w/o making any forward progress, namely if only stuck samples are taken
for whatever reason.

There's a straight-forward way to make the entropy collection more robust,
namely to terminate the loop and report an error if this happens. This
patchset here implements that.

Applies to herbert/cryptodev-2.6.git master.

Thanks!

Nicolai

Nicolai Stange (3):
crypto: drbg - ignore jitterentropy errors if not in FIPS mode
crypto: jitter - don't limit ->health_failure check to FIPS mode
crypto: jitter - quit sample collection loop upon RCT failure

crypto/drbg.c | 7 +++++--
crypto/jitterentropy-kcapi.c | 6 ------
crypto/jitterentropy.c | 6 +-----
crypto/jitterentropy.h | 1 -
4 files changed, 6 insertions(+), 14 deletions(-)

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2.26.2