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crypto: gf128mul - Zero memory when freeing multiplication table 

GF(2^128) multiplication tables are typically used for secret
information, so it's a good idea to zero them on free.

Signed-off-by: Alex Cope <alexcope@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Alex Cope 2016-11-14 11:02:54 -08:00 committed by Herbert Xu
parent b516b88a79
commit 75aa0a7caf
2 changed files with 3 additions and 3 deletions
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4
crypto/gf128mul.c
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@ -310,8 +310,8 @@ void gf128mul_free_64k(struct gf128mul_64k *t)
int i; int i;
for (i = 0; i < 16; i++) for (i = 0; i < 16; i++)
kfree(t->t[i]); kzfree(t->t[i]);
kfree(t); kzfree(t);
} }
EXPORT_SYMBOL(gf128mul_free_64k); EXPORT_SYMBOL(gf128mul_free_64k);

2
include/crypto/gf128mul.h
View File

@ -177,7 +177,7 @@ void gf128mul_4k_bbe(be128 *a, struct gf128mul_4k *t);
static inline void gf128mul_free_4k(struct gf128mul_4k *t) static inline void gf128mul_free_4k(struct gf128mul_4k *t)
{ {
kfree(t); kzfree(t);
} }