2019-05-27 06:55:01 +00:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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2016-06-22 16:49:13 +00:00
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/*
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* Key-agreement Protocol Primitives (KPP)
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*
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* Copyright (c) 2016, Intel Corporation
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* Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
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*/
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2023-02-16 10:35:19 +00:00
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#include <crypto/internal/kpp.h>
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#include <linux/cryptouser.h>
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2016-06-22 16:49:13 +00:00
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/seq_file.h>
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#include <linux/string.h>
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#include <net/netlink.h>
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2023-02-16 10:35:19 +00:00
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2016-06-22 16:49:13 +00:00
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#include "internal.h"
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2023-02-16 10:35:28 +00:00
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static int __maybe_unused crypto_kpp_report(
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struct sk_buff *skb, struct crypto_alg *alg)
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2016-06-22 16:49:13 +00:00
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{
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struct crypto_report_kpp rkpp;
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2018-11-03 21:56:03 +00:00
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memset(&rkpp, 0, sizeof(rkpp));
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2016-06-22 16:49:13 +00:00
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2018-11-03 21:56:03 +00:00
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strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
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2016-06-22 16:49:13 +00:00
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2018-11-03 21:56:03 +00:00
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return nla_put(skb, CRYPTOCFGA_REPORT_KPP, sizeof(rkpp), &rkpp);
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2016-06-22 16:49:13 +00:00
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}
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static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
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2016-12-31 15:56:23 +00:00
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__maybe_unused;
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2016-06-22 16:49:13 +00:00
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static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
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{
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seq_puts(m, "type : kpp\n");
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}
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static void crypto_kpp_exit_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
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struct kpp_alg *alg = crypto_kpp_alg(kpp);
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alg->exit(kpp);
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}
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static int crypto_kpp_init_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
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struct kpp_alg *alg = crypto_kpp_alg(kpp);
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if (alg->exit)
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kpp->base.exit = crypto_kpp_exit_tfm;
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if (alg->init)
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return alg->init(kpp);
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return 0;
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}
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2022-02-21 12:10:47 +00:00
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static void crypto_kpp_free_instance(struct crypto_instance *inst)
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{
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struct kpp_instance *kpp = kpp_instance(inst);
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kpp->free(kpp);
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}
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2024-03-13 01:49:37 +00:00
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static int __maybe_unused crypto_kpp_report_stat(
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struct sk_buff *skb, struct crypto_alg *alg)
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{
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struct kpp_alg *kpp = __crypto_kpp_alg(alg);
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struct crypto_istat_kpp *istat;
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struct crypto_stat_kpp rkpp;
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istat = kpp_get_stat(kpp);
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memset(&rkpp, 0, sizeof(rkpp));
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strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
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rkpp.stat_setsecret_cnt = atomic64_read(&istat->setsecret_cnt);
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rkpp.stat_generate_public_key_cnt =
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atomic64_read(&istat->generate_public_key_cnt);
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rkpp.stat_compute_shared_secret_cnt =
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atomic64_read(&istat->compute_shared_secret_cnt);
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rkpp.stat_err_cnt = atomic64_read(&istat->err_cnt);
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return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
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}
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2016-06-22 16:49:13 +00:00
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static const struct crypto_type crypto_kpp_type = {
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.extsize = crypto_alg_extsize,
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.init_tfm = crypto_kpp_init_tfm,
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2022-02-21 12:10:47 +00:00
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.free = crypto_kpp_free_instance,
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2016-06-22 16:49:13 +00:00
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#ifdef CONFIG_PROC_FS
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.show = crypto_kpp_show,
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#endif
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2023-05-02 08:02:33 +00:00
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#if IS_ENABLED(CONFIG_CRYPTO_USER)
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2016-06-22 16:49:13 +00:00
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.report = crypto_kpp_report,
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2024-03-13 01:49:37 +00:00
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#endif
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#ifdef CONFIG_CRYPTO_STATS
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.report_stat = crypto_kpp_report_stat,
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2023-02-16 10:35:19 +00:00
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#endif
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2016-06-22 16:49:13 +00:00
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.maskclear = ~CRYPTO_ALG_TYPE_MASK,
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.maskset = CRYPTO_ALG_TYPE_MASK,
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.type = CRYPTO_ALG_TYPE_KPP,
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.tfmsize = offsetof(struct crypto_kpp, base),
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};
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struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
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{
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return crypto_alloc_tfm(alg_name, &crypto_kpp_type, type, mask);
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}
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EXPORT_SYMBOL_GPL(crypto_alloc_kpp);
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2022-02-21 12:10:48 +00:00
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int crypto_grab_kpp(struct crypto_kpp_spawn *spawn,
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struct crypto_instance *inst,
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const char *name, u32 type, u32 mask)
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{
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spawn->base.frontend = &crypto_kpp_type;
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return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
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}
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EXPORT_SYMBOL_GPL(crypto_grab_kpp);
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2022-06-27 09:51:58 +00:00
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int crypto_has_kpp(const char *alg_name, u32 type, u32 mask)
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{
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return crypto_type_has_alg(alg_name, &crypto_kpp_type, type, mask);
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}
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EXPORT_SYMBOL_GPL(crypto_has_kpp);
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2016-06-22 16:49:13 +00:00
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static void kpp_prepare_alg(struct kpp_alg *alg)
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{
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2024-03-13 01:49:37 +00:00
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struct crypto_istat_kpp *istat = kpp_get_stat(alg);
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2016-06-22 16:49:13 +00:00
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struct crypto_alg *base = &alg->base;
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base->cra_type = &crypto_kpp_type;
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base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
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base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
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2024-03-13 01:49:37 +00:00
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if (IS_ENABLED(CONFIG_CRYPTO_STATS))
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memset(istat, 0, sizeof(*istat));
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2016-06-22 16:49:13 +00:00
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}
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int crypto_register_kpp(struct kpp_alg *alg)
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{
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struct crypto_alg *base = &alg->base;
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kpp_prepare_alg(alg);
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return crypto_register_alg(base);
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}
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EXPORT_SYMBOL_GPL(crypto_register_kpp);
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void crypto_unregister_kpp(struct kpp_alg *alg)
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{
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crypto_unregister_alg(&alg->base);
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}
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EXPORT_SYMBOL_GPL(crypto_unregister_kpp);
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2022-02-21 12:10:47 +00:00
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int kpp_register_instance(struct crypto_template *tmpl,
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struct kpp_instance *inst)
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{
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if (WARN_ON(!inst->free))
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return -EINVAL;
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kpp_prepare_alg(&inst->alg);
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return crypto_register_instance(tmpl, kpp_crypto_instance(inst));
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}
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EXPORT_SYMBOL_GPL(kpp_register_instance);
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2016-06-22 16:49:13 +00:00
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Key-agreement Protocol Primitives");
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