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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
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 const struct crypto_type crypto_kpp_type = {
70 .extsize = crypto_alg_extsize,
71 .init_tfm = crypto_kpp_init_tfm,
72 .free = crypto_kpp_free_instance,
73#ifdef CONFIG_PROC_FS
74 .show = crypto_kpp_show,
75#endif
76#if IS_ENABLED(CONFIG_CRYPTO_USER)
77 .report = crypto_kpp_report,
78#endif
79 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
80 .maskset = CRYPTO_ALG_TYPE_MASK,
81 .type = CRYPTO_ALG_TYPE_KPP,
82 .tfmsize = offsetof(struct crypto_kpp, base),
83};
84
85struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
86{
87 return crypto_alloc_tfm(alg_name, &crypto_kpp_type, type, mask);
88}
89EXPORT_SYMBOL_GPL(crypto_alloc_kpp);
90
91int crypto_grab_kpp(struct crypto_kpp_spawn *spawn,
92 struct crypto_instance *inst,
93 const char *name, u32 type, u32 mask)
94{
95 spawn->base.frontend = &crypto_kpp_type;
96 return crypto_grab_spawn(&spawn->base, inst, name, type, mask);
97}
98EXPORT_SYMBOL_GPL(crypto_grab_kpp);
99
100int crypto_has_kpp(const char *alg_name, u32 type, u32 mask)
101{
102 return crypto_type_has_alg(alg_name, &crypto_kpp_type, type, mask);
103}
104EXPORT_SYMBOL_GPL(crypto_has_kpp);
105
106static void kpp_prepare_alg(struct kpp_alg *alg)
107{
108 struct crypto_alg *base = &alg->base;
109
110 base->cra_type = &crypto_kpp_type;
111 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
112 base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
113}
114
115int crypto_register_kpp(struct kpp_alg *alg)
116{
117 struct crypto_alg *base = &alg->base;
118
119 kpp_prepare_alg(alg);
120 return crypto_register_alg(base);
121}
122EXPORT_SYMBOL_GPL(crypto_register_kpp);
123
124void crypto_unregister_kpp(struct kpp_alg *alg)
125{
126 crypto_unregister_alg(&alg->base);
127}
128EXPORT_SYMBOL_GPL(crypto_unregister_kpp);
129
130int kpp_register_instance(struct crypto_template *tmpl,
131 struct kpp_instance *inst)
132{
133 if (WARN_ON(!inst->free))
134 return -EINVAL;
135
136 kpp_prepare_alg(&inst->alg);
137
138 return crypto_register_instance(tmpl, kpp_crypto_instance(inst));
139}
140EXPORT_SYMBOL_GPL(kpp_register_instance);
141
142MODULE_LICENSE("GPL");
143MODULE_DESCRIPTION("Key-agreement Protocol Primitives");
1/*
2 * Key-agreement Protocol Primitives (KPP)
3 *
4 * Copyright (c) 2016, Intel Corporation
5 * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 */
13#include <linux/errno.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/seq_file.h>
17#include <linux/slab.h>
18#include <linux/string.h>
19#include <linux/crypto.h>
20#include <crypto/algapi.h>
21#include <linux/cryptouser.h>
22#include <net/netlink.h>
23#include <crypto/kpp.h>
24#include <crypto/internal/kpp.h>
25#include "internal.h"
26
27#ifdef CONFIG_NET
28static int crypto_kpp_report(struct sk_buff *skb, struct crypto_alg *alg)
29{
30 struct crypto_report_kpp rkpp;
31
32 strncpy(rkpp.type, "kpp", sizeof(rkpp.type));
33
34 if (nla_put(skb, CRYPTOCFGA_REPORT_KPP,
35 sizeof(struct crypto_report_kpp), &rkpp))
36 goto nla_put_failure;
37 return 0;
38
39nla_put_failure:
40 return -EMSGSIZE;
41}
42#else
43static int crypto_kpp_report(struct sk_buff *skb, struct crypto_alg *alg)
44{
45 return -ENOSYS;
46}
47#endif
48
49static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
50 __attribute__ ((unused));
51
52static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
53{
54 seq_puts(m, "type : kpp\n");
55}
56
57static void crypto_kpp_exit_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 alg->exit(kpp);
63}
64
65static int crypto_kpp_init_tfm(struct crypto_tfm *tfm)
66{
67 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
68 struct kpp_alg *alg = crypto_kpp_alg(kpp);
69
70 if (alg->exit)
71 kpp->base.exit = crypto_kpp_exit_tfm;
72
73 if (alg->init)
74 return alg->init(kpp);
75
76 return 0;
77}
78
79static const struct crypto_type crypto_kpp_type = {
80 .extsize = crypto_alg_extsize,
81 .init_tfm = crypto_kpp_init_tfm,
82#ifdef CONFIG_PROC_FS
83 .show = crypto_kpp_show,
84#endif
85 .report = crypto_kpp_report,
86 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
87 .maskset = CRYPTO_ALG_TYPE_MASK,
88 .type = CRYPTO_ALG_TYPE_KPP,
89 .tfmsize = offsetof(struct crypto_kpp, base),
90};
91
92struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
93{
94 return crypto_alloc_tfm(alg_name, &crypto_kpp_type, type, mask);
95}
96EXPORT_SYMBOL_GPL(crypto_alloc_kpp);
97
98static void kpp_prepare_alg(struct kpp_alg *alg)
99{
100 struct crypto_alg *base = &alg->base;
101
102 base->cra_type = &crypto_kpp_type;
103 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
104 base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
105}
106
107int crypto_register_kpp(struct kpp_alg *alg)
108{
109 struct crypto_alg *base = &alg->base;
110
111 kpp_prepare_alg(alg);
112 return crypto_register_alg(base);
113}
114EXPORT_SYMBOL_GPL(crypto_register_kpp);
115
116void crypto_unregister_kpp(struct kpp_alg *alg)
117{
118 crypto_unregister_alg(&alg->base);
119}
120EXPORT_SYMBOL_GPL(crypto_unregister_kpp);
121
122MODULE_LICENSE("GPL");
123MODULE_DESCRIPTION("Key-agreement Protocol Primitives");