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[v3,1/3] crypto: api - Adjust HASH_MAX_DESCSIZE for s390-phmac context

Message ID 20241107145521.424769-2-freude@linux.ibm.com
State New
Headers show
Series New s390 specific protected key hmac | expand

Commit Message

Harald Freudenberger Nov. 7, 2024, 2:55 p.m. UTC 
From: Holger Dengler <dengler@linux.ibm.com>

The phmac context exceeds the generic "worst case".
Change this define to cover the s390 specific 'phmac(sha512)'
which is a "protected" key hmac-sha2 implementation.

Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
---
 include/crypto/hash.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
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Patch

diff --git a/include/crypto/hash.h b/include/crypto/hash.h
index 2d5ea9f9ff43..5b724dd7c5a7 100644
--- a/include/crypto/hash.h
+++ b/include/crypto/hash.h
@@ -159,10 +159,9 @@  struct shash_desc {
 #define HASH_MAX_DIGESTSIZE	 64
 
 /*
- * Worst case is hmac(sha3-224-generic).  Its context is a nested 'shash_desc'
- * containing a 'struct sha3_state'.
+ * The max case is currently the s390 specific shash 'phmac(sha512)'.
  */
-#define HASH_MAX_DESCSIZE	(sizeof(struct shash_desc) + 360)
+#define HASH_MAX_DESCSIZE	(sizeof(struct shash_desc) + 376)
 
 #define SHASH_DESC_ON_STACK(shash, ctx)					     \
 	char __##shash##_desc[sizeof(struct shash_desc) + HASH_MAX_DESCSIZE] \