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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Key-agreement Protocol Primitives (KPP)
4 *
5 * Copyright (c) 2016, Intel Corporation
6 * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
7 */
8#include <linux/errno.h>
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/seq_file.h>
12#include <linux/slab.h>
13#include <linux/string.h>
14#include <linux/crypto.h>
15#include <crypto/algapi.h>
16#include <linux/cryptouser.h>
17#include <linux/compiler.h>
18#include <net/netlink.h>
19#include <crypto/kpp.h>
20#include <crypto/internal/kpp.h>
21#include "internal.h"
22
23#ifdef CONFIG_NET
24static int crypto_kpp_report(struct sk_buff *skb, struct crypto_alg *alg)
25{
26 struct crypto_report_kpp rkpp;
27
28 memset(&rkpp, 0, sizeof(rkpp));
29
30 strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
31
32 return nla_put(skb, CRYPTOCFGA_REPORT_KPP, sizeof(rkpp), &rkpp);
33}
34#else
35static int crypto_kpp_report(struct sk_buff *skb, struct crypto_alg *alg)
36{
37 return -ENOSYS;
38}
39#endif
40
41static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
42 __maybe_unused;
43
44static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
45{
46 seq_puts(m, "type : kpp\n");
47}
48
49static void crypto_kpp_exit_tfm(struct crypto_tfm *tfm)
50{
51 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
52 struct kpp_alg *alg = crypto_kpp_alg(kpp);
53
54 alg->exit(kpp);
55}
56
57static int crypto_kpp_init_tfm(struct crypto_tfm *tfm)
58{
59 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
60 struct kpp_alg *alg = crypto_kpp_alg(kpp);
61
62 if (alg->exit)
63 kpp->base.exit = crypto_kpp_exit_tfm;
64
65 if (alg->init)
66 return alg->init(kpp);
67
68 return 0;
69}
70
71static const struct crypto_type crypto_kpp_type = {
72 .extsize = crypto_alg_extsize,
73 .init_tfm = crypto_kpp_init_tfm,
74#ifdef CONFIG_PROC_FS
75 .show = crypto_kpp_show,
76#endif
77 .report = crypto_kpp_report,
78 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
79 .maskset = CRYPTO_ALG_TYPE_MASK,
80 .type = CRYPTO_ALG_TYPE_KPP,
81 .tfmsize = offsetof(struct crypto_kpp, base),
82};
83
84struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
85{
86 return crypto_alloc_tfm(alg_name, &crypto_kpp_type, type, mask);
87}
88EXPORT_SYMBOL_GPL(crypto_alloc_kpp);
89
90static void kpp_prepare_alg(struct kpp_alg *alg)
91{
92 struct crypto_alg *base = &alg->base;
93
94 base->cra_type = &crypto_kpp_type;
95 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
96 base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
97}
98
99int crypto_register_kpp(struct kpp_alg *alg)
100{
101 struct crypto_alg *base = &alg->base;
102
103 kpp_prepare_alg(alg);
104 return crypto_register_alg(base);
105}
106EXPORT_SYMBOL_GPL(crypto_register_kpp);
107
108void crypto_unregister_kpp(struct kpp_alg *alg)
109{
110 crypto_unregister_alg(&alg->base);
111}
112EXPORT_SYMBOL_GPL(crypto_unregister_kpp);
113
114MODULE_LICENSE("GPL");
115MODULE_DESCRIPTION("Key-agreement Protocol Primitives");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Key-agreement Protocol Primitives (KPP)
4 *
5 * Copyright (c) 2016, Intel Corporation
6 * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
7 */
8
9#include <crypto/internal/kpp.h>
10#include <linux/cryptouser.h>
11#include <linux/errno.h>
12#include <linux/kernel.h>
13#include <linux/module.h>
14#include <linux/seq_file.h>
15#include <linux/string.h>
16#include <net/netlink.h>
17
18#include "internal.h"
19
20static int __maybe_unused crypto_kpp_report(
21 struct sk_buff *skb, struct crypto_alg *alg)
22{
23 struct crypto_report_kpp rkpp;
24
25 memset(&rkpp, 0, sizeof(rkpp));
26
27 strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
28
29 return nla_put(skb, CRYPTOCFGA_REPORT_KPP, sizeof(rkpp), &rkpp);
30}
31
32static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
33 __maybe_unused;
34
35static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
36{
37 seq_puts(m, "type : kpp\n");
38}
39
40static void crypto_kpp_exit_tfm(struct crypto_tfm *tfm)
41{
42 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
43 struct kpp_alg *alg = crypto_kpp_alg(kpp);
44
45 alg->exit(kpp);
46}
47
48static int crypto_kpp_init_tfm(struct crypto_tfm *tfm)
49{
50 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
51 struct kpp_alg *alg = crypto_kpp_alg(kpp);
52
53 if (alg->exit)
54 kpp->base.exit = crypto_kpp_exit_tfm;
55
56 if (alg->init)
57 return alg->init(kpp);
58
59 return 0;
60}
61
62static void crypto_kpp_free_instance(struct crypto_instance *inst)
63{
64 struct kpp_instance *kpp = kpp_instance(inst);
65
66 kpp->free(kpp);
67}
68
69static int __maybe_unused crypto_kpp_report_stat(
70 struct sk_buff *skb, struct crypto_alg *alg)
71{
72 struct kpp_alg *kpp = __crypto_kpp_alg(alg);
73 struct crypto_istat_kpp *istat;
74 struct crypto_stat_kpp rkpp;
75
76 istat = kpp_get_stat(kpp);
77
78 memset(&rkpp, 0, sizeof(rkpp));
79
80 strscpy(rkpp.type, "kpp", sizeof(rkpp.type));
81
82 rkpp.stat_setsecret_cnt = atomic64_read(&istat->setsecret_cnt);
83 rkpp.stat_generate_public_key_cnt =
84 atomic64_read(&istat->generate_public_key_cnt);
85 rkpp.stat_compute_shared_secret_cnt =
86 atomic64_read(&istat->compute_shared_secret_cnt);
87 rkpp.stat_err_cnt = atomic64_read(&istat->err_cnt);
88
89 return nla_put(skb, CRYPTOCFGA_STAT_KPP, sizeof(rkpp), &rkpp);
90}
91
92static const struct crypto_type crypto_kpp_type = {
93 .extsize = crypto_alg_extsize,
94 .init_tfm = crypto_kpp_init_tfm,
95 .free = crypto_kpp_free_instance,
96#ifdef CONFIG_PROC_FS
97 .show = crypto_kpp_show,
98#endif
99#if IS_ENABLED(CONFIG_CRYPTO_USER)
100 .report = crypto_kpp_report,
101#endif
102#ifdef CONFIG_CRYPTO_STATS
103 .report_stat = crypto_kpp_report_stat,
104#endif
105 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
106 .maskset = CRYPTO_ALG_TYPE_MASK,
107 .type = CRYPTO_ALG_TYPE_KPP,
108 .tfmsize = offsetof(struct crypto_kpp, base),
109};
110
111struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
112{
113 return crypto_alloc_tfm(alg_name, &crypto_kpp_type, type, mask);
114}
115EXPORT_SYMBOL_GPL(crypto_alloc_kpp);
116
117int crypto_grab_kpp(struct crypto_kpp_spawn *spawn,
118 struct crypto_instance *inst,
119 const char *name, u32 type, u32 mask)
120{
121 spawn->base.frontend = &crypto_kpp_type;
122 return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
123}
124EXPORT_SYMBOL_GPL(crypto_grab_kpp);
125
126int crypto_has_kpp(const char *alg_name, u32 type, u32 mask)
127{
128 return crypto_type_has_alg(alg_name, &crypto_kpp_type, type, mask);
129}
130EXPORT_SYMBOL_GPL(crypto_has_kpp);
131
132static void kpp_prepare_alg(struct kpp_alg *alg)
133{
134 struct crypto_istat_kpp *istat = kpp_get_stat(alg);
135 struct crypto_alg *base = &alg->base;
136
137 base->cra_type = &crypto_kpp_type;
138 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
139 base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
140
141 if (IS_ENABLED(CONFIG_CRYPTO_STATS))
142 memset(istat, 0, sizeof(*istat));
143}
144
145int crypto_register_kpp(struct kpp_alg *alg)
146{
147 struct crypto_alg *base = &alg->base;
148
149 kpp_prepare_alg(alg);
150 return crypto_register_alg(base);
151}
152EXPORT_SYMBOL_GPL(crypto_register_kpp);
153
154void crypto_unregister_kpp(struct kpp_alg *alg)
155{
156 crypto_unregister_alg(&alg->base);
157}
158EXPORT_SYMBOL_GPL(crypto_unregister_kpp);
159
160int kpp_register_instance(struct crypto_template *tmpl,
161 struct kpp_instance *inst)
162{
163 if (WARN_ON(!inst->free))
164 return -EINVAL;
165
166 kpp_prepare_alg(&inst->alg);
167
168 return crypto_register_instance(tmpl, kpp_crypto_instance(inst));
169}
170EXPORT_SYMBOL_GPL(kpp_register_instance);
171
172MODULE_LICENSE("GPL");
173MODULE_DESCRIPTION("Key-agreement Protocol Primitives");