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 <crypto/algapi.h>
21 #include <linux/cryptouser.h>
22 #include <net/netlink.h>
23 #include <crypto/akcipher.h>
24 #include <crypto/internal/akcipher.h>
28 static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
30 struct crypto_report_akcipher rakcipher;
32 strncpy(rakcipher.type, "akcipher", sizeof(rakcipher.type));
34 if (nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER,
35 sizeof(struct crypto_report_akcipher), &rakcipher))
43 static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg)
49 static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
50 __attribute__ ((unused));
52 static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg)
54 seq_puts(m, "type : akcipher\n");
57 static void crypto_akcipher_exit_tfm(struct crypto_tfm *tfm)
59 struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
60 struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
65 static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm)
67 struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm);
68 struct akcipher_alg *alg = crypto_akcipher_alg(akcipher);
71 akcipher->base.exit = crypto_akcipher_exit_tfm;
74 return alg->init(akcipher);
79 static void crypto_akcipher_free_instance(struct crypto_instance *inst)
81 struct akcipher_instance *akcipher = akcipher_instance(inst);
83 akcipher->free(akcipher);
86 static const struct crypto_type crypto_akcipher_type = {
87 .extsize = crypto_alg_extsize,
88 .init_tfm = crypto_akcipher_init_tfm,
89 .free = crypto_akcipher_free_instance,
91 .show = crypto_akcipher_show,
93 .report = crypto_akcipher_report,
94 .maskclear = ~CRYPTO_ALG_TYPE_MASK,
95 .maskset = CRYPTO_ALG_TYPE_MASK,
96 .type = CRYPTO_ALG_TYPE_AKCIPHER,
97 .tfmsize = offsetof(struct crypto_akcipher, base),
100 int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
103 spawn->base.frontend = &crypto_akcipher_type;
104 return crypto_grab_spawn(&spawn->base, name, type, mask);
106 EXPORT_SYMBOL_GPL(crypto_grab_akcipher);
108 struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type,
111 return crypto_alloc_tfm(alg_name, &crypto_akcipher_type, type, mask);
113 EXPORT_SYMBOL_GPL(crypto_alloc_akcipher);
115 static void akcipher_prepare_alg(struct akcipher_alg *alg)
117 struct crypto_alg *base = &alg->base;
119 base->cra_type = &crypto_akcipher_type;
120 base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
121 base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER;
124 int crypto_register_akcipher(struct akcipher_alg *alg)
126 struct crypto_alg *base = &alg->base;
128 akcipher_prepare_alg(alg);
129 return crypto_register_alg(base);
131 EXPORT_SYMBOL_GPL(crypto_register_akcipher);
133 void crypto_unregister_akcipher(struct akcipher_alg *alg)
135 crypto_unregister_alg(&alg->base);
137 EXPORT_SYMBOL_GPL(crypto_unregister_akcipher);
139 int akcipher_register_instance(struct crypto_template *tmpl,
140 struct akcipher_instance *inst)
142 akcipher_prepare_alg(&inst->alg);
143 return crypto_register_instance(tmpl, akcipher_crypto_instance(inst));
145 EXPORT_SYMBOL_GPL(akcipher_register_instance);
147 MODULE_LICENSE("GPL");
148 MODULE_DESCRIPTION("Generic public key cipher type");