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Commit 03d7db56 authored by Corentin LABBE's avatar Corentin LABBE Committed by Herbert Xu
Browse files

crypto: hmac - add hmac IPAD/OPAD constant 



Many HMAC users directly use directly 0x36/0x5c values.
It's better with crypto to use a name instead of directly some crypto
constant.

This patch simply add HMAC_IPAD_VALUE/HMAC_OPAD_VALUE defines in a new
include file "crypto/hmac.h" and use them in crypto/hmac.c

Signed-off-by: default avatarCorentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 9417cd1c

crypto/hmac.c

+3 −2
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
 *

 */



#include <crypto/hmac.h>

#include <crypto/internal/hash.h>

#include <crypto/scatterwalk.h>

#include <linux/err.h>
@@ -74,8 +75,8 @@ static int hmac_setkey(struct crypto_shash *parent, 
	memcpy(opad, ipad, bs);



	for (i = 0; i < bs; i++) {

		ipad[i] ^= 0x36;

		opad[i] ^= 0x5c;

		ipad[i] ^= HMAC_IPAD_VALUE;

		opad[i] ^= HMAC_OPAD_VALUE;

	}



	return crypto_shash_init(shash) ?:

include/crypto/hmac.h

0 → 100644
+7 −0
Original line number Diff line number Diff line 
#ifndef _CRYPTO_HMAC_H

#define _CRYPTO_HMAC_H



#define HMAC_IPAD_VALUE 0x36

#define HMAC_OPAD_VALUE 0x5c



#endif /* _CRYPTO_HMAC_H */