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/*
* Cryptographic API for algorithms (i.e., low-level API).
*
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
*/
#ifndef _CRYPTO_ALGAPI_H
#define _CRYPTO_ALGAPI_H
#include <linux/crypto.h>
struct module;
struct seq_file;
struct crypto_type {
unsigned int (*ctxsize)(struct crypto_alg *alg);
int (*init)(struct crypto_tfm *tfm);
void (*exit)(struct crypto_tfm *tfm);
void (*show)(struct seq_file *m, struct crypto_alg *alg);
};
struct crypto_instance {
struct crypto_alg alg;
struct crypto_template *tmpl;
struct hlist_node list;
void *__ctx[] CRYPTO_MINALIGN_ATTR;
};
struct crypto_template {
struct list_head list;
struct hlist_head instances;
struct module *module;
struct crypto_instance *(*alloc)(void *param, unsigned int len);
void (*free)(struct crypto_instance *inst);
char name[CRYPTO_MAX_ALG_NAME];
};
struct crypto_spawn {
struct list_head list;
struct crypto_alg *alg;
struct crypto_instance *inst;
};
int crypto_register_template(struct crypto_template *tmpl);
void crypto_unregister_template(struct crypto_template *tmpl);
struct crypto_template *crypto_lookup_template(const char *name);
int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
struct crypto_instance *inst);
void crypto_drop_spawn(struct crypto_spawn *spawn);
struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn);
struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
u32 type, u32 mask);
struct crypto_instance *crypto_alloc_instance(const char *name,
struct crypto_alg *alg);
static inline void *crypto_instance_ctx(struct crypto_instance *inst)
{
return inst->__ctx;
}
static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
{
return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
}
#endif /* _CRYPTO_ALGAPI_H */
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