2 * Public Key Encryption
4 * Copyright (c) 2015, Intel Corporation
5 * Authors: Tadeusz Struk <tadeusz.struk@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 <linux/compiler.h>
21 #include <crypto/algapi.h>
22 #include <linux/cryptouser.h>
23 #include <net/netlink.h>
24 #include <crypto/akcipher.h>
25 #include <crypto/internal/akcipher.h>
29 static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
31 struct crypto_report_akcipher rakcipher;
33 strncpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
35 if (nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER,
36 sizeof(struct crypto_report_akcipher), &rakcipher))
44 static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
50 static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
53 static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
55 seq_puts(m, "type : akcipher\n");
58 static void crypto_akcipher_exit_tfm(struct crypto_tfm *tfm)
60 struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
61 struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
66 static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm)
68 struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
69 struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
72 akcipher->base.exit = crypto_akcipher_exit_tfm;
75 return alg->init(akcipher);
80 static void crypto_akcipher_free_instance(struct crypto_instance *inst)
82 struct akcipher_instance *akcipher = akcipher_instance(inst);
84 akcipher->free(akcipher);
87 static const struct crypto_type crypto_akcipher_type = {
88 .extsize = crypto_alg_extsize,
89 .init_tfm = crypto_akcipher_init_tfm,
90 .free = crypto_akcipher_free_instance,
92 .show = crypto_akcipher_show,
94 .report = crypto_akcipher_report,
95 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
96 .maskset = CRYPTO_ALG_TYPE_MASK,
97 .type = CRYPTO_ALG_TYPE_AKCIPHER,
98 .tfmsize = offsetof(struct crypto_akcipher, base),
101 int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
104 spawn->base.frontend = &crypto_akcipher_type;
105 return crypto_grab_spawn(&spawn->base, name, type, mask);
107 EXPORT_SYMBOL_GPL(crypto_grab_akcipher);
109 struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
112 return crypto_alloc_tfm(alg_name, &crypto_akcipher_type, type, mask);
114 EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
116 static void akcipher_prepare_alg(struct akcipher_alg *alg)
118 struct crypto_alg *base = &alg->base;
120 base->cra_type = &crypto_akcipher_type;
121 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
122 base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
125 int crypto_register_akcipher(struct akcipher_alg *alg)
127 struct crypto_alg *base = &alg->base;
129 akcipher_prepare_alg(alg);
130 return crypto_register_alg(base);
132 EXPORT_SYMBOL_GPL(crypto_register_akcipher);
134 void crypto_unregister_akcipher(struct akcipher_alg *alg)
136 crypto_unregister_alg(&alg->base);
138 EXPORT_SYMBOL_GPL(crypto_unregister_akcipher);
140 int akcipher_register_instance(struct crypto_template *tmpl,
141 struct akcipher_instance *inst)
143 akcipher_prepare_alg(&inst->alg);
144 return crypto_register_instance(tmpl, akcipher_crypto_instance(inst));
146 EXPORT_SYMBOL_GPL(akcipher_register_instance);
148 MODULE_LICENSE("GPL");
149 MODULE_DESCRIPTION("Generic public key cipher type");