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");