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crypto: ccp - Add support for valid authsize values less than 16

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AES GCM encryption allows for authsize values of 4, 8, and 12-16 bytes.
Validate the requested authsize, and retain it to save in the request
context.

Fixes: 36cf515b9b ("crypto: ccp - Enable support for AES GCM on v5 CCPs")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gary R Hook 2019-07-30 16:05:24 +00:00 • committed by Herbert Xu
parent 25e4433832
commit 9f00baf74e
3 changed files with 37 additions and 5 deletions
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2
include/linux/ccp.h
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@ -173,6 +173,8 @@ struct ccp_aes_engine {
enum ccp_aes_mode mode;
enum ccp_aes_action action;
u32 authsize;
struct scatterlist *key;
u32 key_len; /* In bytes */