diff mbox

[5/8] crypto: ecc - remove casts in ecc_is_key_valid

Message ID 1494583906-15472-6-git-send-email-tudor.ambarus@microchip.com (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show

Commit Message

Tudor Ambarus May 12, 2017, 10:11 a.m. UTC 
ecc software implementation works with chunks of u64 data. There were some
unnecessary casts to u8 and then back to u64 for the ecc keys. This patch
removes the unnecessary casts.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
 crypto/ecc.c  | 6 +++---
 crypto/ecc.h  | 2 +-
 crypto/ecdh.c | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)
diff mbox

Patch

diff --git a/crypto/ecc.c b/crypto/ecc.c
index e6f2725..e3a2b8f 100644
--- a/crypto/ecc.c
+++ b/crypto/ecc.c
@@ -904,7 +904,7 @@  static inline void ecc_swap_digits(const u64 *in, u64 *out,
 }
 
 int ecc_is_key_valid(unsigned int curve_id, unsigned int ndigits,
-		     const u8 *private_key, unsigned int private_key_len)
+		     const u64 *private_key, unsigned int private_key_len)
 {
 	int nbytes;
 	const struct ecc_curve *curve = ecc_get_curve(curve_id);
@@ -917,11 +917,11 @@  int ecc_is_key_valid(unsigned int curve_id, unsigned int ndigits,
 	if (private_key_len != nbytes)
 		return -EINVAL;
 
-	if (vli_is_zero((const u64 *)&private_key[0], ndigits))
+	if (vli_is_zero(private_key, ndigits))
 		return -EINVAL;
 
 	/* Make sure the private key is in the range [1, n-1]. */
-	if (vli_cmp(curve->n, (const u64 *)&private_key[0], ndigits) != 1)
+	if (vli_cmp(curve->n, private_key, ndigits) != 1)
 		return -EINVAL;
 
 	return 0;
diff --git a/crypto/ecc.h b/crypto/ecc.h
index f3351c4..af2ffdb 100644
--- a/crypto/ecc.h
+++ b/crypto/ecc.h
@@ -41,7 +41,7 @@ 
  * Returns 0 if the key is acceptable, a negative value otherwise
  */
 int ecc_is_key_valid(unsigned int curve_id, unsigned int ndigits,
-		     const u8 *private_key, unsigned int private_key_len);
+		     const u64 *private_key, unsigned int private_key_len);
 
 /**
  * ecdh_make_pub_key() - Compute an ECC public key
diff --git a/crypto/ecdh.c b/crypto/ecdh.c
index f69ec30..c1f0163 100644
--- a/crypto/ecdh.c
+++ b/crypto/ecdh.c
@@ -56,7 +56,7 @@  static int ecdh_set_secret(struct crypto_kpp *tfm, const void *buf,
 	ctx->ndigits = ndigits;
 
 	if (ecc_is_key_valid(ctx->curve_id, ctx->ndigits,
-			     (const u8 *)params.key, params.key_size) < 0)
+			     (const u64 *)params.key, params.key_size) < 0)
 		return -EINVAL;
 
 	memcpy(ctx->private_key, params.key, params.key_size);