The correct way to calculate the start of the aligned part of an
unaligned buffer is:
offset = ALIGN(offset, alignmask + 1);
However, crypto_hash_walk_done() has:
offset += alignmask - 1;
offset = ALIGN(offset, alignmask + 1);
which actually skips a whole block unless offset % (alignmask + 1) == 1.
This patch fixes the problem.
Signed-off-by: Szilveszter Ördög <slipszi@xxxxxxxxx>
---
crypto/ahash.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/crypto/ahash.c b/crypto/ahash.c
index f347637..db42202 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -65,7 +65,6 @@ int crypto_hash_walk_done(struct crypto_hash_walk
*walk, int err)
walk->data -= walk->offset;
if (nbytes && walk->offset & alignmask && !err) {
- walk->offset += alignmask - 1;
walk->offset = ALIGN(walk->offset, alignmask + 1);
walk->data += walk->offset;
--
1.5.5.6
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