From patchwork Tue Oct 10 21:22:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dimitri John Ledkov X-Patchwork-Id: 731505 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 84BBBCD98C5 for ; Tue, 10 Oct 2023 21:23:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344058AbjJJVXM (ORCPT ); Tue, 10 Oct 2023 17:23:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60608 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344051AbjJJVXL (ORCPT ); Tue, 10 Oct 2023 17:23:11 -0400 Received: from smtp-relay-internal-0.canonical.com (smtp-relay-internal-0.canonical.com [185.125.188.122]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2F09B0 for ; Tue, 10 Oct 2023 14:23:07 -0700 (PDT) Received: from mail-pl1-f197.google.com (mail-pl1-f197.google.com [209.85.214.197]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by smtp-relay-internal-0.canonical.com (Postfix) with ESMTPS id 96BD83FA66 for ; Tue, 10 Oct 2023 21:23:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=canonical.com; s=20210705; t=1696972985; bh=dt6CcgwPKCSIkpNUiMjupKuZt3x+WJihxFdlJEsepTg=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=f66AJUdGHC6mrAbNf/n57wEPdBi8wHDLXxy0Rx3JL5bVOV7VW+bIe7WqSP+zq1AkU wl9jo4GBJEBLWMFa6XN/Pws9nKe05Te5NwAshwj9hjHOL5ysM1O9cJnOVnaK3eRiDo W3YAZy7mnmpKAwdAMBERwhsGuZCNdFEpYbiqtO7OL1bDj6xTqTRjPpYhapSuW21s3Q qU0raqWTOXzeDB6cbU+q3fI1XQ9+FsUHpqeTqcFmmeC3WkRfOChZyjr2C0NeZyjjlA Z75ZsJKW8xdKIZ4Iy489c1Xg2d1FGoe9DVAI/i0rkK8Lm0QfE8GB1FCcRXTC/IJJ3l 1mrSnG7w30Uvw== Received: by mail-pl1-f197.google.com with SMTP id d9443c01a7336-1c729a25537so46120935ad.0 for ; Tue, 10 Oct 2023 14:23:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696972984; x=1697577784; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=dt6CcgwPKCSIkpNUiMjupKuZt3x+WJihxFdlJEsepTg=; b=Lcn/JJ4UDCnbDYL/CLgKmsMdVSnw6K4Wi9fSrm5gmka3JgGeC4s/fg0NnOjszw7MbC wtP5cwInRnR/ynLA8b1VCq60L60nyFZYSf/mQUloCI/CI9oixOEntwknkA0m531UGX0s v2CKe+ibCnka2Gp0Iw9fH8Y2XmYbpdbfL178uNCXNfzAXIxgZBs0kx91fytZO1reFxpY Ugm1UxKiommsljtACsCXn2y5cyecwI22zRxXA344PmqhBeLe1JsVTwb6W2bJXmdzOpHI cLQFD22d3bWEEtYhS1BNwGavRc4/CT8I0wk5aKMxSGI0VMyv3lTb115zJwgvxyrSKMlL qQzQ== X-Gm-Message-State: AOJu0YwkC9Yh0cNCWBZKWYYRK8rhsPNuQ2p6bEHp5mnEdk6EPzpkFHwh Uwz57Oy6gTrWds2weNa7Loq9CzYxWgN7dFNx41nFSY5UwSAtye236sVuBRNnEssaLRkyZrreDAS LbN4aMsvFNffIZxcAV9vyFTsbyt94J+y5DZXes4/OTQ== X-Received: by 2002:a17:903:2307:b0:1c6:21b4:30bb with SMTP id d7-20020a170903230700b001c621b430bbmr21303349plh.15.1696972983577; Tue, 10 Oct 2023 14:23:03 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGiwyknU53ojn8a4oUiYoLhkOlE4XAyEIp8hrkD35e7rfCj2gBH09CDF2PKa2CnilwyFDQlBQ== X-Received: by 2002:a17:903:2307:b0:1c6:21b4:30bb with SMTP id d7-20020a170903230700b001c621b430bbmr21303327plh.15.1696972983003; Tue, 10 Oct 2023 14:23:03 -0700 (PDT) Received: from localhost ([2001:67c:1560:8007::aac:c15c]) by smtp.gmail.com with ESMTPSA id h3-20020a170902b94300b001c5c370d4desm12277833pls.246.2023.10.10.14.23.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Oct 2023 14:23:02 -0700 (PDT) From: Dimitri John Ledkov To: David Howells , Herbert Xu , "David S. Miller" , Maxime Coquelin , Alexandre Torgue , Luis Chamberlain Cc: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-modules@vger.kernel.org Subject: [PATCH] crypto: pkcs7: remove sha1 support Date: Tue, 10 Oct 2023 22:22:38 +0100 Message-Id: <20231010212240.61637-1-dimitri.ledkov@canonical.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Removes support for sha1 signed kernel modules, importing sha1 signed x.509 certificates. rsa-pkcs1pad keeps sha1 padding support, which seems to be used by virtio driver. sha1 remains available as there are many drivers and subsystems using it. Note only hmac(sha1) with secret keys remains cryptographically secure. In the kernel there are filesystems, IMA, tpm/pcr that appear to be using sha1. Maybe they can all start to be slowly upgraded to something else i.e. blake3, ParallelHash, SHAKE256 as needed. Signed-off-by: Dimitri John Ledkov --- crypto/asymmetric_keys/mscode_parser.c | 3 - crypto/asymmetric_keys/pkcs7_parser.c | 4 -- crypto/asymmetric_keys/public_key.c | 3 +- crypto/asymmetric_keys/signature.c | 2 +- crypto/asymmetric_keys/x509_cert_parser.c | 8 --- crypto/testmgr.h | 80 ----------------------- include/linux/oid_registry.h | 4 -- kernel/module/Kconfig | 5 -- 8 files changed, 2 insertions(+), 107 deletions(-) diff --git a/crypto/asymmetric_keys/mscode_parser.c b/crypto/asymmetric_keys/mscode_parser.c index 690405ebe7..6416bded0e 100644 --- a/crypto/asymmetric_keys/mscode_parser.c +++ b/crypto/asymmetric_keys/mscode_parser.c @@ -75,9 +75,6 @@ int mscode_note_digest_algo(void *context, size_t hdrlen, oid = look_up_OID(value, vlen); switch (oid) { - case OID_sha1: - ctx->digest_algo = "sha1"; - break; case OID_sha256: ctx->digest_algo = "sha256"; break; diff --git a/crypto/asymmetric_keys/pkcs7_parser.c b/crypto/asymmetric_keys/pkcs7_parser.c index cf4caab962..ab647cb4d7 100644 --- a/crypto/asymmetric_keys/pkcs7_parser.c +++ b/crypto/asymmetric_keys/pkcs7_parser.c @@ -227,9 +227,6 @@ int pkcs7_sig_note_digest_algo(void *context, size_t hdrlen, struct pkcs7_parse_context *ctx = context; switch (ctx->last_oid) { - case OID_sha1: - ctx->sinfo->sig->hash_algo = "sha1"; - break; case OID_sha256: ctx->sinfo->sig->hash_algo = "sha256"; break; @@ -272,7 +269,6 @@ int pkcs7_sig_note_pkey_algo(void *context, size_t hdrlen, ctx->sinfo->sig->pkey_algo = "rsa"; ctx->sinfo->sig->encoding = "pkcs1"; break; - case OID_id_ecdsa_with_sha1: case OID_id_ecdsa_with_sha224: case OID_id_ecdsa_with_sha256: case OID_id_ecdsa_with_sha384: diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c index abeecb8329..5bf0452c17 100644 --- a/crypto/asymmetric_keys/public_key.c +++ b/crypto/asymmetric_keys/public_key.c @@ -116,8 +116,7 @@ software_key_determine_akcipher(const struct public_key *pkey, */ if (!hash_algo) return -EINVAL; - if (strcmp(hash_algo, "sha1") != 0 && - strcmp(hash_algo, "sha224") != 0 && + if (strcmp(hash_algo, "sha224") != 0 && strcmp(hash_algo, "sha256") != 0 && strcmp(hash_algo, "sha384") != 0 && strcmp(hash_algo, "sha512") != 0) diff --git a/crypto/asymmetric_keys/signature.c b/crypto/asymmetric_keys/signature.c index 2deff81f8a..398983be77 100644 --- a/crypto/asymmetric_keys/signature.c +++ b/crypto/asymmetric_keys/signature.c @@ -115,7 +115,7 @@ EXPORT_SYMBOL_GPL(decrypt_blob); * Sign the specified data blob using the private key specified by params->key. * The signature is wrapped in an encoding if params->encoding is specified * (eg. "pkcs1"). If the encoding needs to know the digest type, this can be - * passed through params->hash_algo (eg. "sha1"). + * passed through params->hash_algo (eg. "sha512"). * * Returns the length of the data placed in the signature buffer or an error. */ diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 2c30928621..68ef1ffbbe 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -198,10 +198,6 @@ int x509_note_sig_algo(void *context, size_t hdrlen, unsigned char tag, default: return -ENOPKG; /* Unsupported combination */ - case OID_sha1WithRSAEncryption: - ctx->cert->sig->hash_algo = "sha1"; - goto rsa_pkcs1; - case OID_sha256WithRSAEncryption: ctx->cert->sig->hash_algo = "sha256"; goto rsa_pkcs1; @@ -218,10 +214,6 @@ int x509_note_sig_algo(void *context, size_t hdrlen, unsigned char tag, ctx->cert->sig->hash_algo = "sha224"; goto rsa_pkcs1; - case OID_id_ecdsa_with_sha1: - ctx->cert->sig->hash_algo = "sha1"; - goto ecdsa; - case OID_id_ecdsa_with_sha224: ctx->cert->sig->hash_algo = "sha224"; goto ecdsa; diff --git a/crypto/testmgr.h b/crypto/testmgr.h index 3cfe91e2d1..98f83c32e0 100644 --- a/crypto/testmgr.h +++ b/crypto/testmgr.h @@ -653,30 +653,6 @@ static const struct akcipher_testvec rsa_tv_template[] = { static const struct akcipher_testvec ecdsa_nist_p192_tv_template[] = { { .key = - "\x04\xf7\x46\xf8\x2f\x15\xf6\x22\x8e\xd7\x57\x4f\xcc\xe7\xbb\xc1" - "\xd4\x09\x73\xcf\xea\xd0\x15\x07\x3d\xa5\x8a\x8a\x95\x43\xe4\x68" - "\xea\xc6\x25\xc1\xc1\x01\x25\x4c\x7e\xc3\x3c\xa6\x04\x0a\xe7\x08" - "\x98", - .key_len = 49, - .params = - "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" - "\xce\x3d\x03\x01\x01", - .param_len = 21, - .m = - "\xcd\xb9\xd2\x1c\xb7\x6f\xcd\x44\xb3\xfd\x63\xea\xa3\x66\x7f\xae" - "\x63\x85\xe7\x82", - .m_size = 20, - .algo = OID_id_ecdsa_with_sha1, - .c = - "\x30\x35\x02\x19\x00\xba\xe5\x93\x83\x6e\xb6\x3b\x63\xa0\x27\x91" - "\xc6\xf6\x7f\xc3\x09\xad\x59\xad\x88\x27\xd6\x92\x6b\x02\x18\x10" - "\x68\x01\x9d\xba\xce\x83\x08\xef\x95\x52\x7b\xa0\x0f\xe4\x18\x86" - "\x80\x6f\xa5\x79\x77\xda\xd0", - .c_size = 55, - .public_key_vec = true, - .siggen_sigver_test = true, - }, { - .key = "\x04\xb6\x4b\xb1\xd1\xac\xba\x24\x8f\x65\xb2\x60\x00\x90\xbf\xbd" "\x78\x05\x73\xe9\x79\x1d\x6f\x7c\x0b\xd2\xc3\x93\xa7\x28\xe1\x75" "\xf7\xd5\x95\x1d\x28\x10\xc0\x75\x50\x5c\x1a\x4f\x3f\x8f\xa5\xee" @@ -780,32 +756,6 @@ static const struct akcipher_testvec ecdsa_nist_p192_tv_template[] = { static const struct akcipher_testvec ecdsa_nist_p256_tv_template[] = { { .key = - "\x04\xb9\x7b\xbb\xd7\x17\x64\xd2\x7e\xfc\x81\x5d\x87\x06\x83\x41" - "\x22\xd6\x9a\xaa\x87\x17\xec\x4f\x63\x55\x2f\x94\xba\xdd\x83\xe9" - "\x34\x4b\xf3\xe9\x91\x13\x50\xb6\xcb\xca\x62\x08\xe7\x3b\x09\xdc" - "\xc3\x63\x4b\x2d\xb9\x73\x53\xe4\x45\xe6\x7c\xad\xe7\x6b\xb0\xe8" - "\xaf", - .key_len = 65, - .params = - "\x30\x13\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x08\x2a\x86\x48" - "\xce\x3d\x03\x01\x07", - .param_len = 21, - .m = - "\xc2\x2b\x5f\x91\x78\x34\x26\x09\x42\x8d\x6f\x51\xb2\xc5\xaf\x4c" - "\x0b\xde\x6a\x42", - .m_size = 20, - .algo = OID_id_ecdsa_with_sha1, - .c = - "\x30\x46\x02\x21\x00\xf9\x25\xce\x9f\x3a\xa6\x35\x81\xcf\xd4\xe7" - "\xb7\xf0\x82\x56\x41\xf7\xd4\xad\x8d\x94\x5a\x69\x89\xee\xca\x6a" - "\x52\x0e\x48\x4d\xcc\x02\x21\x00\xd7\xe4\xef\x52\x66\xd3\x5b\x9d" - "\x8a\xfa\x54\x93\x29\xa7\x70\x86\xf1\x03\x03\xf3\x3b\xe2\x73\xf7" - "\xfb\x9d\x8b\xde\xd4\x8d\x6f\xad", - .c_size = 72, - .public_key_vec = true, - .siggen_sigver_test = true, - }, { - .key = "\x04\x8b\x6d\xc0\x33\x8e\x2d\x8b\x67\xf5\xeb\xc4\x7f\xa0\xf5\xd9" "\x7b\x03\xa5\x78\x9a\xb5\xea\x14\xe4\x23\xd0\xaf\xd7\x0e\x2e\xa0" "\xc9\x8b\xdb\x95\xf8\xb3\xaf\xac\x00\x2c\x2c\x1f\x7a\xfd\x95\x88" @@ -916,36 +866,6 @@ static const struct akcipher_testvec ecdsa_nist_p256_tv_template[] = { static const struct akcipher_testvec ecdsa_nist_p384_tv_template[] = { { - .key = /* secp384r1(sha1) */ - "\x04\x89\x25\xf3\x97\x88\xcb\xb0\x78\xc5\x72\x9a\x14\x6e\x7a\xb1" - "\x5a\xa5\x24\xf1\x95\x06\x9e\x28\xfb\xc4\xb9\xbe\x5a\x0d\xd9\x9f" - "\xf3\xd1\x4d\x2d\x07\x99\xbd\xda\xa7\x66\xec\xbb\xea\xba\x79\x42" - "\xc9\x34\x89\x6a\xe7\x0b\xc3\xf2\xfe\x32\x30\xbe\xba\xf9\xdf\x7e" - "\x4b\x6a\x07\x8e\x26\x66\x3f\x1d\xec\xa2\x57\x91\x51\xdd\x17\x0e" - "\x0b\x25\xd6\x80\x5c\x3b\xe6\x1a\x98\x48\x91\x45\x7a\x73\xb0\xc3" - "\xf1", - .key_len = 97, - .params = - "\x30\x10\x06\x07\x2a\x86\x48\xce\x3d\x02\x01\x06\x05\x2b\x81\x04" - "\x00\x22", - .param_len = 18, - .m = - "\x12\x55\x28\xf0\x77\xd5\xb6\x21\x71\x32\x48\xcd\x28\xa8\x25\x22" - "\x3a\x69\xc1\x93", - .m_size = 20, - .algo = OID_id_ecdsa_with_sha1, - .c = - "\x30\x66\x02\x31\x00\xf5\x0f\x24\x4c\x07\x93\x6f\x21\x57\x55\x07" - "\x20\x43\x30\xde\xa0\x8d\x26\x8e\xae\x63\x3f\xbc\x20\x3a\xc6\xf1" - "\x32\x3c\xce\x70\x2b\x78\xf1\x4c\x26\xe6\x5b\x86\xcf\xec\x7c\x7e" - "\xd0\x87\xd7\xd7\x6e\x02\x31\x00\xcd\xbb\x7e\x81\x5d\x8f\x63\xc0" - "\x5f\x63\xb1\xbe\x5e\x4c\x0e\xa1\xdf\x28\x8c\x1b\xfa\xf9\x95\x88" - "\x74\xa0\x0f\xbf\xaf\xc3\x36\x76\x4a\xa1\x59\xf1\x1c\xa4\x58\x26" - "\x79\x12\x2a\xb7\xc5\x15\x92\xc5", - .c_size = 104, - .public_key_vec = true, - .siggen_sigver_test = true, - }, { .key = /* secp384r1(sha224) */ "\x04\x69\x6c\xcf\x62\xee\xd0\x0d\xe5\xb5\x2f\x70\x54\xcf\x26\xa0" "\xd9\x98\x8d\x92\x2a\xab\x9b\x11\xcb\x48\x18\xa1\xa9\x0d\xd5\x18" diff --git a/include/linux/oid_registry.h b/include/linux/oid_registry.h index 4d04fa5d1e..8b79e55cfc 100644 --- a/include/linux/oid_registry.h +++ b/include/linux/oid_registry.h @@ -17,12 +17,10 @@ * build_OID_registry.pl to generate the data for look_up_OID(). */ enum OID { - OID_id_dsa_with_sha1, /* 1.2.840.10030.4.3 */ OID_id_dsa, /* 1.2.840.10040.4.1 */ OID_id_ecPublicKey, /* 1.2.840.10045.2.1 */ OID_id_prime192v1, /* 1.2.840.10045.3.1.1 */ OID_id_prime256v1, /* 1.2.840.10045.3.1.7 */ - OID_id_ecdsa_with_sha1, /* 1.2.840.10045.4.1 */ OID_id_ecdsa_with_sha224, /* 1.2.840.10045.4.3.1 */ OID_id_ecdsa_with_sha256, /* 1.2.840.10045.4.3.2 */ OID_id_ecdsa_with_sha384, /* 1.2.840.10045.4.3.3 */ @@ -30,7 +28,6 @@ enum OID { /* PKCS#1 {iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs-1(1)} */ OID_rsaEncryption, /* 1.2.840.113549.1.1.1 */ - OID_sha1WithRSAEncryption, /* 1.2.840.113549.1.1.5 */ OID_sha256WithRSAEncryption, /* 1.2.840.113549.1.1.11 */ OID_sha384WithRSAEncryption, /* 1.2.840.113549.1.1.12 */ OID_sha512WithRSAEncryption, /* 1.2.840.113549.1.1.13 */ @@ -67,7 +64,6 @@ enum OID { OID_PKU2U, /* 1.3.5.1.5.2.7 */ OID_Scram, /* 1.3.6.1.5.5.14 */ OID_certAuthInfoAccess, /* 1.3.6.1.5.5.7.1.1 */ - OID_sha1, /* 1.3.14.3.2.26 */ OID_id_ansip384r1, /* 1.3.132.0.34 */ OID_sha256, /* 2.16.840.1.101.3.4.2.1 */ OID_sha384, /* 2.16.840.1.101.3.4.2.2 */ diff --git a/kernel/module/Kconfig b/kernel/module/Kconfig index 33a2e991f6..19a53d5e77 100644 --- a/kernel/module/Kconfig +++ b/kernel/module/Kconfig @@ -236,10 +236,6 @@ choice possible to load a signed module containing the algorithm to check the signature on that module. -config MODULE_SIG_SHA1 - bool "Sign modules with SHA-1" - select CRYPTO_SHA1 - config MODULE_SIG_SHA224 bool "Sign modules with SHA-224" select CRYPTO_SHA256 @@ -261,7 +257,6 @@ endchoice config MODULE_SIG_HASH string depends on MODULE_SIG || IMA_APPRAISE_MODSIG - default "sha1" if MODULE_SIG_SHA1 default "sha224" if MODULE_SIG_SHA224 default "sha256" if MODULE_SIG_SHA256 default "sha384" if MODULE_SIG_SHA384