From patchwork Fri Oct 14 10:07:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ignat Korchagin X-Patchwork-Id: 13006895 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E8D08C433FE for ; Fri, 14 Oct 2022 10:08:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229693AbiJNKID (ORCPT ); Fri, 14 Oct 2022 06:08:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230054AbiJNKH7 (ORCPT ); Fri, 14 Oct 2022 06:07:59 -0400 Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 941BE1C8D41 for ; Fri, 14 Oct 2022 03:07:56 -0700 (PDT) Received: by mail-wr1-x42c.google.com with SMTP id a3so6897069wrt.0 for ; Fri, 14 Oct 2022 03:07:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=MOV0/JHYEg81m6+HxEgpndLefaJ+Ca9O4oLBIpfzJQg=; b=RJR6YVOdooXE1ewExAo012x6+ETUffZf9JSuN3wIAQMjSS52jgw0YElszm7b2hfOU9 j9/r+7BCB5NuBVtfceRoJR+MG5bC7zDU0dKqpv8sX76TcTT1KDPv6CFtr+I2QgTyFeV5 whm8Y4wRQ4JhWP52lRcrdgX7vlqNx5cmNZPSw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=MOV0/JHYEg81m6+HxEgpndLefaJ+Ca9O4oLBIpfzJQg=; b=XsiXO0NfM2ClMjqzuLkwF72rDF9oLP17kUv2xTd/4HHs/VBnjTMnyirgIkqwbkF5Z0 VEuB9M9LkpLKCraEt5emwFFuay8EyivQfltK5fXd3NepxOdS2oQaM/2kgcIGRe9lJwIm 4VPXMt1ZC6lOE+vEyn/80lsb21tmQHDvud1ahV3MdTjyxawouK4TJW1GQshHJ63FlXUG 3xcxnX7wMq4DY99qOMj25sRDDNXfPOVXjPtN/dvnVO5v8xsLgUSdd9MEjUYFqmcCNCu7 tKimes3zMlsn0Si7TWVL7gFD3IXZ24pUQJfvjkIwmC1c5wDXrqIuDP9+5bX+yy4/hZjg rG+Q== X-Gm-Message-State: ACrzQf3YeuSPaSooTbdVjsosiU7KslrIja9SluB6sqcUrGJwZesHg89O Vk+bkdemBuewaBMRk6MJEbX0UQ== X-Google-Smtp-Source: AMsMyM6R7T5D7MBjCPKvu+8/PVJ4EhCvqGhG3oqYXHeE+m7Y5CMK8iCqDUp6B9RIwHswAyehRH6PqA== X-Received: by 2002:a5d:584a:0:b0:231:636c:de28 with SMTP id i10-20020a5d584a000000b00231636cde28mr2816767wrf.175.1665742074550; Fri, 14 Oct 2022 03:07:54 -0700 (PDT) Received: from localhost.localdomain ([2a02:c7c:5308:6600:49a0:d6bf:5c1a:f3da]) by smtp.gmail.com with ESMTPSA id c15-20020a5d414f000000b002285f73f11dsm1931008wrq.81.2022.10.14.03.07.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Oct 2022 03:07:54 -0700 (PDT) From: Ignat Korchagin To: David Howells , Herbert Xu , "David S. Miller" , keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Cc: kernel-team@cloudflare.com, lei he , Ignat Korchagin Subject: [PATCH v2 3/4] crypto: pkcs8 parser support ECDSA private keys Date: Fri, 14 Oct 2022 11:07:36 +0100 Message-Id: <20221014100737.94742-4-ignat@cloudflare.com> X-Mailer: git-send-email 2.37.0 (Apple Git-136) In-Reply-To: <20221014100737.94742-1-ignat@cloudflare.com> References: <20221014100737.94742-1-ignat@cloudflare.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org From: lei he Make pkcs8_private_key_parser can identify ECDSA private keys. Signed-off-by: lei he Signed-off-by: Ignat Korchagin --- crypto/asymmetric_keys/pkcs8.asn1 | 2 +- crypto/asymmetric_keys/pkcs8_parser.c | 45 +++++++++++++++++++++++++-- 2 files changed, 43 insertions(+), 4 deletions(-) diff --git a/crypto/asymmetric_keys/pkcs8.asn1 b/crypto/asymmetric_keys/pkcs8.asn1 index 702c41a3c713..1791ddf4168a 100644 --- a/crypto/asymmetric_keys/pkcs8.asn1 +++ b/crypto/asymmetric_keys/pkcs8.asn1 @@ -20,5 +20,5 @@ Attribute ::= ANY AlgorithmIdentifier ::= SEQUENCE { algorithm OBJECT IDENTIFIER ({ pkcs8_note_OID }), - parameters ANY OPTIONAL + parameters ANY OPTIONAL ({ pkcs8_note_algo_parameter }) } diff --git a/crypto/asymmetric_keys/pkcs8_parser.c b/crypto/asymmetric_keys/pkcs8_parser.c index 105dcce27f71..e507c635ead5 100644 --- a/crypto/asymmetric_keys/pkcs8_parser.c +++ b/crypto/asymmetric_keys/pkcs8_parser.c @@ -24,6 +24,8 @@ struct pkcs8_parse_context { enum OID algo_oid; /* Algorithm OID */ u32 key_size; const void *key; + const void *algo_param; + u32 algo_param_len; }; /* @@ -47,6 +49,17 @@ int pkcs8_note_OID(void *context, size_t hdrlen, return 0; } +int pkcs8_note_algo_parameter(void *context, size_t hdrlen, + unsigned char tag, + const void *value, size_t vlen) +{ + struct pkcs8_parse_context *ctx = context; + + ctx->algo_param = value; + ctx->algo_param_len = vlen; + return 0; +} + /* * Note the version number of the ASN.1 blob. */ @@ -69,11 +82,37 @@ int pkcs8_note_algo(void *context, size_t hdrlen, const void *value, size_t vlen) { struct pkcs8_parse_context *ctx = context; - - if (ctx->last_oid != OID_rsaEncryption) + enum OID curve_id; + + switch (ctx->last_oid) { + case OID_id_ecPublicKey: + if (!ctx->algo_param || ctx->algo_param_len == 0) + return -EBADMSG; + curve_id = look_up_OID(ctx->algo_param, ctx->algo_param_len); + + switch (curve_id) { + case OID_id_prime192v1: + ctx->pub->pkey_algo = "ecdsa-nist-p192"; + break; + case OID_id_prime256v1: + ctx->pub->pkey_algo = "ecdsa-nist-p256"; + break; + case OID_id_ansip384r1: + ctx->pub->pkey_algo = "ecdsa-nist-p384"; + break; + default: + return -ENOPKG; + } + break; + + case OID_rsaEncryption: + ctx->pub->pkey_algo = "rsa"; + break; + + default: return -ENOPKG; + } - ctx->pub->pkey_algo = "rsa"; return 0; }