mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
166 lines
4.2 KiB
166 lines
4.2 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Public Key Encryption |
|
* |
|
* Copyright (c) 2015, Intel Corporation |
|
* Authors: Tadeusz Struk <[email protected]> |
|
*/ |
|
#include <linux/errno.h> |
|
#include <linux/kernel.h> |
|
#include <linux/module.h> |
|
#include <linux/seq_file.h> |
|
#include <linux/slab.h> |
|
#include <linux/string.h> |
|
#include <linux/crypto.h> |
|
#include <linux/compiler.h> |
|
#include <crypto/algapi.h> |
|
#include <linux/cryptouser.h> |
|
#include <net/netlink.h> |
|
#include <crypto/akcipher.h> |
|
#include <crypto/internal/akcipher.h> |
|
#include "internal.h" |
|
|
|
#ifdef CONFIG_NET |
|
static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg) |
|
{ |
|
struct crypto_report_akcipher rakcipher; |
|
|
|
memset(&rakcipher, 0, sizeof(rakcipher)); |
|
|
|
strscpy(rakcipher.type, "akcipher", sizeof(rakcipher.type)); |
|
|
|
return nla_put(skb, CRYPTOCFGA_REPORT_AKCIPHER, |
|
sizeof(rakcipher), &rakcipher); |
|
} |
|
#else |
|
static int crypto_akcipher_report(struct sk_buff *skb, struct crypto_alg *alg) |
|
{ |
|
return -ENOSYS; |
|
} |
|
#endif |
|
|
|
static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg) |
|
__maybe_unused; |
|
|
|
static void crypto_akcipher_show(struct seq_file *m, struct crypto_alg *alg) |
|
{ |
|
seq_puts(m, "type : akcipher\n"); |
|
} |
|
|
|
static void crypto_akcipher_exit_tfm(struct crypto_tfm *tfm) |
|
{ |
|
struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm); |
|
struct akcipher_alg *alg = crypto_akcipher_alg(akcipher); |
|
|
|
alg->exit(akcipher); |
|
} |
|
|
|
static int crypto_akcipher_init_tfm(struct crypto_tfm *tfm) |
|
{ |
|
struct crypto_akcipher *akcipher = __crypto_akcipher_tfm(tfm); |
|
struct akcipher_alg *alg = crypto_akcipher_alg(akcipher); |
|
|
|
if (alg->exit) |
|
akcipher->base.exit = crypto_akcipher_exit_tfm; |
|
|
|
if (alg->init) |
|
return alg->init(akcipher); |
|
|
|
return 0; |
|
} |
|
|
|
static void crypto_akcipher_free_instance(struct crypto_instance *inst) |
|
{ |
|
struct akcipher_instance *akcipher = akcipher_instance(inst); |
|
|
|
akcipher->free(akcipher); |
|
} |
|
|
|
static const struct crypto_type crypto_akcipher_type = { |
|
.extsize = crypto_alg_extsize, |
|
.init_tfm = crypto_akcipher_init_tfm, |
|
.free = crypto_akcipher_free_instance, |
|
#ifdef CONFIG_PROC_FS |
|
.show = crypto_akcipher_show, |
|
#endif |
|
.report = crypto_akcipher_report, |
|
.maskclear = ~CRYPTO_ALG_TYPE_MASK, |
|
.maskset = CRYPTO_ALG_TYPE_MASK, |
|
.type = CRYPTO_ALG_TYPE_AKCIPHER, |
|
.tfmsize = offsetof(struct crypto_akcipher, base), |
|
}; |
|
|
|
int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, |
|
struct crypto_instance *inst, |
|
const char *name, u32 type, u32 mask) |
|
{ |
|
spawn->base.frontend = &crypto_akcipher_type; |
|
return crypto_grab_spawn(&spawn->base, inst, name, type, mask); |
|
} |
|
EXPORT_SYMBOL_GPL(crypto_grab_akcipher); |
|
|
|
struct crypto_akcipher *crypto_alloc_akcipher(const char *alg_name, u32 type, |
|
u32 mask) |
|
{ |
|
return crypto_alloc_tfm(alg_name, &crypto_akcipher_type, type, mask); |
|
} |
|
EXPORT_SYMBOL_GPL(crypto_alloc_akcipher); |
|
|
|
static void akcipher_prepare_alg(struct akcipher_alg *alg) |
|
{ |
|
struct crypto_alg *base = &alg->base; |
|
|
|
base->cra_type = &crypto_akcipher_type; |
|
base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK; |
|
base->cra_flags |= CRYPTO_ALG_TYPE_AKCIPHER; |
|
} |
|
|
|
static int akcipher_default_op(struct akcipher_request *req) |
|
{ |
|
return -ENOSYS; |
|
} |
|
|
|
static int akcipher_default_set_key(struct crypto_akcipher *tfm, |
|
const void *key, unsigned int keylen) |
|
{ |
|
return -ENOSYS; |
|
} |
|
|
|
int crypto_register_akcipher(struct akcipher_alg *alg) |
|
{ |
|
struct crypto_alg *base = &alg->base; |
|
|
|
if (!alg->sign) |
|
alg->sign = akcipher_default_op; |
|
if (!alg->verify) |
|
alg->verify = akcipher_default_op; |
|
if (!alg->encrypt) |
|
alg->encrypt = akcipher_default_op; |
|
if (!alg->decrypt) |
|
alg->decrypt = akcipher_default_op; |
|
if (!alg->set_priv_key) |
|
alg->set_priv_key = akcipher_default_set_key; |
|
|
|
akcipher_prepare_alg(alg); |
|
return crypto_register_alg(base); |
|
} |
|
EXPORT_SYMBOL_GPL(crypto_register_akcipher); |
|
|
|
void crypto_unregister_akcipher(struct akcipher_alg *alg) |
|
{ |
|
crypto_unregister_alg(&alg->base); |
|
} |
|
EXPORT_SYMBOL_GPL(crypto_unregister_akcipher); |
|
|
|
int akcipher_register_instance(struct crypto_template *tmpl, |
|
struct akcipher_instance *inst) |
|
{ |
|
if (WARN_ON(!inst->free)) |
|
return -EINVAL; |
|
akcipher_prepare_alg(&inst->alg); |
|
return crypto_register_instance(tmpl, akcipher_crypto_instance(inst)); |
|
} |
|
EXPORT_SYMBOL_GPL(akcipher_register_instance); |
|
|
|
MODULE_LICENSE("GPL"); |
|
MODULE_DESCRIPTION("Generic public key cipher type");
|
|
|