2 * Key-agreement Protocol Primitives (KPP)
4 * Copyright (c) 2016, Intel Corporation
5 * Authors: Salvatore Benedetto <salvatore.benedetto@intel.com>
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)
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>
28 static int crypto_kpp_report(struct sk_buff *skb, struct crypto_alg *alg)
30 struct crypto_report_kpp rkpp;
32 strncpy(rkpp.type, "kpp", sizeof(rkpp.type));
34 if (nla_put(skb, CRYPTOCFGA_REPORT_KPP,
35 sizeof(struct crypto_report_kpp), &rkpp))
43 static int crypto_kpp_report(struct sk_buff *skb, struct crypto_alg *alg)
49 static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
50 __attribute__ ((unused));
52 static void crypto_kpp_show(struct seq_file *m, struct crypto_alg *alg)
54 seq_puts(m, "type : kpp\n");
57 static void crypto_kpp_exit_tfm(struct crypto_tfm *tfm)
59 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
60 struct kpp_alg *alg = crypto_kpp_alg(kpp);
65 static int crypto_kpp_init_tfm(struct crypto_tfm *tfm)
67 struct crypto_kpp *kpp = __crypto_kpp_tfm(tfm);
68 struct kpp_alg *alg = crypto_kpp_alg(kpp);
71 kpp->base.exit = crypto_kpp_exit_tfm;
74 return alg->init(kpp);
79 static const struct crypto_type crypto_kpp_type = {
80 .extsize = crypto_alg_extsize,
81 .init_tfm = crypto_kpp_init_tfm,
83 .show = crypto_kpp_show,
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),
92 struct crypto_kpp *crypto_alloc_kpp(const char *alg_name, u32 type, u32 mask)
94 return crypto_alloc_tfm(alg_name, &crypto_kpp_type, type, mask);
96 EXPORT_SYMBOL_GPL(crypto_alloc_kpp);
98 static void kpp_prepare_alg(struct kpp_alg *alg)
100 struct crypto_alg *base = &alg->base;
102 base->cra_type = &crypto_kpp_type;
103 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
104 base->cra_flags |= CRYPTO_ALG_TYPE_KPP;
107 int crypto_register_kpp(struct kpp_alg *alg)
109 struct crypto_alg *base = &alg->base;
111 kpp_prepare_alg(alg);
112 return crypto_register_alg(base);
114 EXPORT_SYMBOL_GPL(crypto_register_kpp);
116 void crypto_unregister_kpp(struct kpp_alg *alg)
118 crypto_unregister_alg(&alg->base);
120 EXPORT_SYMBOL_GPL(crypto_unregister_kpp);
122 MODULE_LICENSE("GPL");
123 MODULE_DESCRIPTION("Key-agreement Protocol Primitives");