linux-kernel - [PATCH v7 01/13] crypto: ecc - Use ECC_CURVE_NIST_P192/256/384

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Date: Wed, 20 Mar 2024 07:47:13 -0400
From: Stefan Berger <stefanb@...ux.ibm.com>
To: keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        herbert@...dor.apana.org.au, davem@...emloft.net
Cc: linux-kernel@...r.kernel.org, saulo.alessandre@....jus.br, lukas@...ner.de,
        bbhushan2@...vell.com, jarkko@...nel.org,
        Stefan Berger <stefanb@...ux.ibm.com>
Subject: [PATCH v7 01/13] crypto: ecc - Use ECC_CURVE_NIST_P192/256/384_DIGITS where possible

Replace hard-coded numbers with ECC_CURVE_NIST_P192/256/384_DIGITS where
possible.

Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>
Tested-by: Lukas Wunner <lukas@...ner.de>
Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
---
 crypto/ecc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/crypto/ecc.c b/crypto/ecc.c
index f53fb4d6af99..415a2f4e7291 100644
--- a/crypto/ecc.c
+++ b/crypto/ecc.c
@@ -689,7 +689,7 @@ static void vli_mmod_barrett(u64 *result, u64 *product, const u64 *mod,
 static void vli_mmod_fast_192(u64 *result, const u64 *product,
 			      const u64 *curve_prime, u64 *tmp)
 {
-	const unsigned int ndigits = 3;
+	const unsigned int ndigits = ECC_CURVE_NIST_P192_DIGITS;
 	int carry;
 
 	vli_set(result, product, ndigits);
@@ -717,7 +717,7 @@ static void vli_mmod_fast_256(u64 *result, const u64 *product,
 			      const u64 *curve_prime, u64 *tmp)
 {
 	int carry;
-	const unsigned int ndigits = 4;
+	const unsigned int ndigits = ECC_CURVE_NIST_P256_DIGITS;
 
 	/* t */
 	vli_set(result, product, ndigits);
@@ -800,7 +800,7 @@ static void vli_mmod_fast_384(u64 *result, const u64 *product,
 				const u64 *curve_prime, u64 *tmp)
 {
 	int carry;
-	const unsigned int ndigits = 6;
+	const unsigned int ndigits = ECC_CURVE_NIST_P384_DIGITS;
 
 	/* t */
 	vli_set(result, product, ndigits);
@@ -932,13 +932,13 @@ static bool vli_mmod_fast(u64 *result, u64 *product,
 	}
 
 	switch (ndigits) {
-	case 3:
+	case ECC_CURVE_NIST_P192_DIGITS:
 		vli_mmod_fast_192(result, product, curve_prime, tmp);
 		break;
-	case 4:
+	case ECC_CURVE_NIST_P256_DIGITS:
 		vli_mmod_fast_256(result, product, curve_prime, tmp);
 		break;
-	case 6:
+	case ECC_CURVE_NIST_P384_DIGITS:
 		vli_mmod_fast_384(result, product, curve_prime, tmp);
 		break;
 	default:
-- 
2.43.0