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(parent: ea9e756) | patch
crypto: mxs-dcp - Fix SHA null hashes and output length
authorRadu Solea <radu.solea@nxp.com>
Tue, 2 Oct 2018 19:01:50 +0000 (19:01 +0000)
committerHerbert Xu <herbert@gondor.apana.org.au>
Mon, 8 Oct 2018 05:45:41 +0000 (13:45 +0800)
commitc709eebaf5c5faa8a0f140355f9cfe67e8f7afb1
treec4df0775786afbc2989b3145aae16c46443ee412tree | snapshot
parentea9e7568f7a7f0a6695e046316132afe382969a8commit | diff
crypto: mxs-dcp - Fix SHA null hashes and output length

DCP writes at least 32 bytes in the output buffer instead of hash length
as documented. Add intermediate buffer to prevent write out of bounds.

When requested to produce null hashes DCP fails to produce valid output.
Add software workaround to bypass hardware and return valid output.

Signed-off-by: Radu Solea <radu.solea@nxp.com>
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/crypto/mxs-dcp.c diff | blob | history
Domain: System / Kernel;