From patchwork Fri Mar 1 02:20:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 13577880 X-Patchwork-Delegate: herbert@gondor.apana.org.au Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43A423A8D2; Fri, 1 Mar 2024 02:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709259624; cv=none; b=HuF8SrnfJ29Cfp4YCX/MHPTZZ5TljbsnqSJbEKQgsEB45DwY03VCWGm6kBdfNZzGUavh5UP+ewkl1m+yHmilU363FNUWPQqnUOaE/bBDxAzgaKR7NmHQPcwYMGH/gBqFhmh81V1UPM3GtcU/IIIhFiUI8YR8yisPjgZb5AwrZvk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709259624; c=relaxed/simple; bh=o1v/JX7sIpsoVFsmxKrT91VXsaiTzc9XeG2SC7KxnEI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rssBo1RJ2L1U9K56egnZOfBpGSel4Xb8F1dvZFCgS/P6uNy3yQc6awtCSxbYFQJFqBL++3wzjCtCi4BtoEMirYAvfkSBl6RZwa4ozmQXDlfYZK5J1pwBoTyGQDT3LcnQUyXA8pPEf9iW300LE4s+v6jzaQOTnviuWlB/GRWnmwU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=eiNMumx/; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="eiNMumx/" Received: from pps.filterd (m0360072.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 4212Hf09028224; Fri, 1 Mar 2024 02:20:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=mKVkxb/T5qGHQvaRTLWjs+ciJiOyEWiLYIdnDAuupJk=; b=eiNMumx/wNhPmvmKrZAnaC0JtRauZlj4u+3ktAmRS5y/V+z9zdCIPEG0hSU76ZpNRrxE 2UxE+4ibFzhFnoP2sYD7BgVWf4yXdsiXgCGGGIK+oyIL49Vhz3wQJfq4NMElWOJGDMb+ OkhB/jiczm37gRikpGgs9VUHiXXILfvklg03RAf7Qi5UIlpXQRGaO39jeEMcudCtSOGl JigJzsctRreRlkp7fVTq3FltXZWkvmIodU5Q+tW5AVzJAsCi6MLASFh3n5R0gcB+SqH3 6d5dHt2nK1Yf7Ym1+iG2RgFN1XnLVW4di79QImUfMQ1vnCl4V15fHTtGDrhcw9k22IdS aA== Received: from ppma12.dal12v.mail.ibm.com (dc.9e.1632.ip4.static.sl-reverse.com [50.22.158.220]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3wk63t81k4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 01 Mar 2024 02:20:18 +0000 Received: from pps.filterd (ppma12.dal12v.mail.ibm.com [127.0.0.1]) by ppma12.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 4210gfdu008808; Fri, 1 Mar 2024 02:20:17 GMT Received: from smtprelay03.dal12v.mail.ibm.com ([172.16.1.5]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 3wftsu1w6t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 01 Mar 2024 02:20:17 +0000 Received: from smtpav05.dal12v.mail.ibm.com (smtpav05.dal12v.mail.ibm.com [10.241.53.104]) by smtprelay03.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 4212KErj38535578 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 1 Mar 2024 02:20:16 GMT Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CA11658071; Fri, 1 Mar 2024 02:20:14 +0000 (GMT) Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 52FE958068; Fri, 1 Mar 2024 02:20:14 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by smtpav05.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 1 Mar 2024 02:20:14 +0000 (GMT) From: Stefan Berger To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net Cc: linux-kernel@vger.kernel.org, saulo.alessandre@tse.jus.br, lukas@wunner.de, Stefan Berger Subject: [PATCH v4 09/12] crypto: ecdsa - Rename keylen to bufsize where necessary Date: Thu, 29 Feb 2024 21:20:04 -0500 Message-ID: <20240301022007.344948-10-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240301022007.344948-1-stefanb@linux.ibm.com> References: <20240301022007.344948-1-stefanb@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: z5FTQ5LHpF0DZt41-ToOm6gm3W3sJOnf X-Proofpoint-ORIG-GUID: z5FTQ5LHpF0DZt41-ToOm6gm3W3sJOnf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-29_08,2024-02-29_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 mlxscore=0 spamscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2403010018 In some cases the name keylen does not reflect the purpose of the variable anymore once NIST P521 is used but it is the size of the buffer. There- for, rename keylen to bufsize where appropriate. Signed-off-by: Stefan Berger --- crypto/ecdsa.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/crypto/ecdsa.c b/crypto/ecdsa.c index 4daefb40c37a..4e847b59622a 100644 --- a/crypto/ecdsa.c +++ b/crypto/ecdsa.c @@ -35,8 +35,8 @@ struct ecdsa_signature_ctx { static int ecdsa_get_signature_rs(u64 *dest, size_t hdrlen, unsigned char tag, const void *value, size_t vlen, unsigned int ndigits) { - size_t keylen = ndigits * sizeof(u64); - ssize_t diff = vlen - keylen; + size_t bufsize = ndigits * sizeof(u64); + ssize_t diff = vlen - bufsize; const char *d = value; u8 rs[ECC_MAX_BYTES]; @@ -58,7 +58,7 @@ static int ecdsa_get_signature_rs(u64 *dest, size_t hdrlen, unsigned char tag, if (diff) return -EINVAL; } - if (-diff >= keylen) + if (-diff >= bufsize) return -EINVAL; if (diff) { @@ -138,7 +138,7 @@ static int ecdsa_verify(struct akcipher_request *req) { struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); struct ecc_ctx *ctx = akcipher_tfm_ctx(tfm); - size_t keylen = ctx->curve->g.ndigits * sizeof(u64); + size_t bufsize = ctx->curve->g.ndigits * sizeof(u64); struct ecdsa_signature_ctx sig_ctx = { .curve = ctx->curve, }; @@ -165,14 +165,14 @@ static int ecdsa_verify(struct akcipher_request *req) goto error; /* if the hash is shorter then we will add leading zeros to fit to ndigits */ - diff = keylen - req->dst_len; + diff = bufsize - req->dst_len; if (diff >= 0) { if (diff) memset(rawhash, 0, diff); memcpy(&rawhash[diff], buffer + req->src_len, req->dst_len); } else if (diff < 0) { /* given hash is longer, we take the left-most bytes */ - memcpy(&rawhash, buffer + req->src_len, keylen); + memcpy(&rawhash, buffer + req->src_len, bufsize); } ecc_swap_digits((u64 *)rawhash, hash, ctx->curve->g.ndigits);