From patchwork Wed Nov 15 07:17:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: LeoLiu-oc X-Patchwork-Id: 744049 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 7BA4A944D for ; Wed, 15 Nov 2023 07:17:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mx1.zhaoxin.com (MX1.ZHAOXIN.COM [210.0.225.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ECBF2E9 for ; Tue, 14 Nov 2023 23:17:33 -0800 (PST) X-ASG-Debug-ID: 1700032647-086e236fee1c120001-Xm9f1P Received: from ZXSHMBX1.zhaoxin.com (ZXSHMBX1.zhaoxin.com [10.28.252.163]) by mx1.zhaoxin.com with ESMTP id NvCb1q0jYs4kthNX (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO); Wed, 15 Nov 2023 15:17:27 +0800 (CST) X-Barracuda-Envelope-From: LeoLiu-oc@zhaoxin.com X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.163 Received: from ZXBJMBX03.zhaoxin.com (10.29.252.7) by ZXSHMBX1.zhaoxin.com (10.28.252.163) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 15 Nov 2023 15:17:27 +0800 Received: from xin.lan (10.32.64.1) by ZXBJMBX03.zhaoxin.com (10.29.252.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 15 Nov 2023 15:17:25 +0800 X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.163 From: LeoLiu-oc X-Barracuda-RBL-Trusted-Forwarder: 10.29.252.7 To: , , , , , , , , , , , , , , , , CC: , , , , LeoLiuoc Subject: [PATCH v2] crypto: x86/sm2 -add Zhaoxin SM2 algorithm implementation Date: Wed, 15 Nov 2023 15:17:24 +0800 X-ASG-Orig-Subj: [PATCH v2] crypto: x86/sm2 -add Zhaoxin SM2 algorithm implementation Message-ID: <20231115071724.575356-1-LeoLiu-oc@zhaoxin.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231109094744.545887-1-LeoLiu-oc@zhaoxin.com> References: <20231109094744.545887-1-LeoLiu-oc@zhaoxin.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.32.64.1] X-ClientProxiedBy: zxbjmbx1.zhaoxin.com (10.29.252.163) To ZXBJMBX03.zhaoxin.com (10.29.252.7) X-Barracuda-Connect: ZXSHMBX1.zhaoxin.com[10.28.252.163] X-Barracuda-Start-Time: 1700032647 X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256 X-Barracuda-URL: https://10.28.252.35:4443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at zhaoxin.com X-Barracuda-Scan-Msg-Size: 7102 X-Barracuda-BRTS-Status: 0 X-Barracuda-Bayes: INNOCENT GLOBAL 0.0000 1.0000 -2.0210 X-Barracuda-Spam-Score: -2.02 X-Barracuda-Spam-Status: No, SCORE=-2.02 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.116769 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- From: LeoLiuoc Add support for SM2 (ShangMi 2) public key algorithm by Zhaoxin GMI Instruction. The purpose of this driver is to ensure that the application has both high performance and high security. --- v1 -> v2: 1. The assembly code is modified to be embedded in the .c file. 2. Optimize code style and details. Signed-off-by: LeoLiuoc --- arch/x86/crypto/Kconfig | 11 ++ arch/x86/crypto/Makefile | 2 + arch/x86/crypto/sm2-zhaoxin-gmi_glue.c | 154 +++++++++++++++++++++++++ arch/x86/include/asm/cpufeatures.h | 2 + 4 files changed, 169 insertions(+) create mode 100644 arch/x86/crypto/sm2-zhaoxin-gmi_glue.c diff --git a/arch/x86/crypto/Kconfig b/arch/x86/crypto/Kconfig index 9bbfd01cfa2f..974d4c3806ff 100644 --- a/arch/x86/crypto/Kconfig +++ b/arch/x86/crypto/Kconfig @@ -519,4 +519,15 @@ config CRYPTO_CRCT10DIF_PCLMUL Architecture: x86_64 using: - PCLMULQDQ (carry-less multiplication) +config CRYPTO_SM2_ZHAOXIN_GMI + tristate "SM2 Cipher algorithm (Zhaoxin GMI Instruction)" + depends on X86 && (CPU_SUP_CENTAUR || CPU_SUP_ZHAOXIN) + select CRYPTO_AKCIPHER + select CRYPTO_MANAGER + help + SM2 (ShangMi 2) public key algorithm by Zhaoxin GMI Instruction + + Published by State Encryption Management Bureau, China, + as specified by OSCCA GM/T 0003.1-2012 -- 0003.5-2012. + endmenu diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index 9aa46093c91b..be37a4a7fc3f 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -109,6 +109,8 @@ aria-aesni-avx2-x86_64-y := aria-aesni-avx2-asm_64.o aria_aesni_avx2_glue.o obj-$(CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64) += aria-gfni-avx512-x86_64.o aria-gfni-avx512-x86_64-y := aria-gfni-avx512-asm_64.o aria_gfni_avx512_glue.o +obj-$(CONFIG_CRYPTO_SM2_ZHAOXIN_GMI) += sm2-zhaoxin-gmi_glue.o + quiet_cmd_perlasm = PERLASM $@ cmd_perlasm = $(PERL) $< > $@ $(obj)/%.S: $(src)/%.pl FORCE diff --git a/arch/x86/crypto/sm2-zhaoxin-gmi_glue.c b/arch/x86/crypto/sm2-zhaoxin-gmi_glue.c new file mode 100644 index 000000000000..80a3c739a9a7 --- /dev/null +++ b/arch/x86/crypto/sm2-zhaoxin-gmi_glue.c @@ -0,0 +1,154 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * SM2 asymmetric public-key algorithm + * as specified by OSCCA GM/T 0003.1-2012 -- 0003.5-2012 SM2 and + * described at https://tools.ietf.org/html/draft-shen-sm2-ecdsa-02 + * + * Copyright (c) 2023 Shanghai Zhaoxin Semiconductor LTD. + * Authors: YunShen + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define SCRATCH_SIZE (4 * 2048) + +struct sm2_cipher_data { + u8 pub_key[65]; /* public key */ +}; + +/* Load supported features of the CPU to see if the SM2 is available. */ +static int zhaoxin_gmi_available(void) +{ + if (!boot_cpu_has(X86_FEATURE_SM2_EN)) { + pr_err("can't enable hardware SM2 if Zhaoxin GMI SM2 is not enabled\n"); + return -ENODEV; + } + return 0; +} + +/* Zhaoxin sm2 verify function */ +static inline int zhaoxin_gmi_sm2_verify(unsigned char *key, unsigned char *hash, unsigned char *sig, + unsigned char *scratch) +{ + uint64_t cword, f_ok; + cword = (uint64_t)0x8; + + asm(".byte 0xf2, 0x0f, 0xa6, 0xc0" + :"=c"(f_ok), "+a"(hash), "+b"(key), "+d"(cword), "+S"(scratch), "+D"(sig)); + + return f_ok; +} + +/* Zhaoxin sm2 verify function */ +static int _zhaoxin_sm2_verify(struct sm2_cipher_data *ec, unsigned char *hash, unsigned char *sig) +{ + int ret = -EKEYREJECTED; + uint64_t f_ok = 0; + unsigned char *scratch = kzalloc(SCRATCH_SIZE, GFP_KERNEL); + + f_ok = zhaoxin_gmi_sm2_verify(ec->pub_key, hash, sig, scratch); + if (f_ok == 1) + ret = 0; + + kfree(scratch); + + return ret; +} + +static int zhaoxin_sm2_verify(struct akcipher_request *req) +{ + struct crypto_akcipher *tfm = crypto_akcipher_reqtfm(req); + struct sm2_cipher_data *ec = akcipher_tfm_ctx(tfm); + unsigned char *buffer; + int ret, buf_len; + + buf_len = req->src_len + req->dst_len; + + buffer = kmalloc(buf_len, GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + sg_pcopy_to_buffer(req->src, sg_nents_for_len(req->src, buf_len), buffer, buf_len, 0); + ret = _zhaoxin_sm2_verify(ec, buffer + req->src_len, buffer); + + kfree(buffer); + + return ret; +} + +static int zhaoxin_sm2_set_pub_key(struct crypto_akcipher *tfm, const void *key, + unsigned int keylen) +{ + struct sm2_cipher_data *ec = akcipher_tfm_ctx(tfm); + + memcpy(ec->pub_key, key, keylen); + + return 0; +} + +static unsigned int zhaoxin_sm2_max_size(struct crypto_akcipher *tfm) +{ + /* Unlimited max size */ + return PAGE_SIZE; +} + +static int zhaoxin_sm2_init_tfm(struct crypto_akcipher *tfm) +{ + return zhaoxin_gmi_available(); +} + +static void zhaoxin_sm2_exit_tfm(struct crypto_akcipher *tfm) +{ + struct sm2_cipher_data *ec = akcipher_tfm_ctx(tfm); + + memset(ec, 0, sizeof(*ec)); +} + +static struct akcipher_alg zhaoxin_sm2 = { + .verify = zhaoxin_sm2_verify, + .set_pub_key = zhaoxin_sm2_set_pub_key, + .max_size = zhaoxin_sm2_max_size, + .init = zhaoxin_sm2_init_tfm, + .exit = zhaoxin_sm2_exit_tfm, + .base = { + .cra_name = "sm2", + .cra_driver_name = "zhaoxin-gmi-sm2", + .cra_priority = 150, + .cra_module = THIS_MODULE, + .cra_ctxsize = sizeof(struct sm2_cipher_data), + }, +}; + +static const struct x86_cpu_id zhaoxin_sm2_cpu_ids[] = { + X86_MATCH_FEATURE(X86_FEATURE_SM2, NULL), + {} +}; +MODULE_DEVICE_TABLE(x86cpu, zhaoxin_sm2_cpu_ids); + +static int __init zhaoxin_sm2_init(void) +{ + if (!x86_match_cpu(zhaoxin_sm2_cpu_ids)) + return -ENODEV; + + return crypto_register_akcipher(&zhaoxin_sm2); +} + +static void __exit zhaoxin_sm2_exit(void) +{ + crypto_unregister_akcipher(&zhaoxin_sm2); +} + +module_init(zhaoxin_sm2_init); +module_exit(zhaoxin_sm2_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("YunShen "); +MODULE_DESCRIPTION("SM2 Zhaoxin GMI Algorithm"); +MODULE_ALIAS_CRYPTO("zhaoxin-gmi-sm2"); diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 4af140cf5719..07a78ec83bed 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -146,6 +146,8 @@ #define X86_FEATURE_HYPERVISOR ( 4*32+31) /* Running on a hypervisor */ /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ +#define X86_FEATURE_SM2 (5*32 + 0) /* SM2 ZhaoXin GMI present */ +#define X86_FEATURE_SM2_EN (5*32 + 1) /* SM2 ZhaoXin GMI enabled */ #define X86_FEATURE_XSTORE ( 5*32+ 2) /* "rng" RNG present (xstore) */ #define X86_FEATURE_XSTORE_EN ( 5*32+ 3) /* "rng_en" RNG enabled */ #define X86_FEATURE_XCRYPT ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */