2006-08-21 05:08:13 -06:00
|
|
|
/*
|
|
|
|
* 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>
|
|
|
|
|
2006-08-06 05:16:34 -06:00
|
|
|
struct module;
|
2006-08-21 08:06:54 -06:00
|
|
|
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);
|
|
|
|
};
|
2006-08-06 05:16:34 -06:00
|
|
|
|
|
|
|
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];
|
|
|
|
};
|
|
|
|
|
2006-09-20 19:39:29 -06:00
|
|
|
struct crypto_spawn {
|
|
|
|
struct list_head list;
|
|
|
|
struct crypto_alg *alg;
|
|
|
|
struct crypto_instance *inst;
|
|
|
|
};
|
|
|
|
|
2006-08-12 05:56:17 -06:00
|
|
|
struct scatter_walk {
|
|
|
|
struct scatterlist *sg;
|
|
|
|
unsigned int offset;
|
|
|
|
};
|
|
|
|
|
2006-08-21 08:07:53 -06:00
|
|
|
struct blkcipher_walk {
|
|
|
|
union {
|
|
|
|
struct {
|
|
|
|
struct page *page;
|
|
|
|
unsigned long offset;
|
|
|
|
} phys;
|
|
|
|
|
|
|
|
struct {
|
|
|
|
u8 *page;
|
|
|
|
u8 *addr;
|
|
|
|
} virt;
|
|
|
|
} src, dst;
|
|
|
|
|
|
|
|
struct scatter_walk in;
|
|
|
|
unsigned int nbytes;
|
|
|
|
|
|
|
|
struct scatter_walk out;
|
|
|
|
unsigned int total;
|
|
|
|
|
|
|
|
void *page;
|
|
|
|
u8 *buffer;
|
|
|
|
u8 *iv;
|
|
|
|
|
|
|
|
int flags;
|
|
|
|
};
|
|
|
|
|
|
|
|
extern const struct crypto_type crypto_blkcipher_type;
|
2006-08-19 06:24:23 -06:00
|
|
|
extern const struct crypto_type crypto_hash_type;
|
2006-08-21 08:07:53 -06:00
|
|
|
|
2006-09-20 19:44:08 -06:00
|
|
|
void crypto_mod_put(struct crypto_alg *alg);
|
|
|
|
|
2006-08-06 05:16:34 -06:00
|
|
|
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);
|
|
|
|
|
2006-09-20 19:39:29 -06:00
|
|
|
int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
|
|
|
|
struct crypto_instance *inst);
|
|
|
|
void crypto_drop_spawn(struct crypto_spawn *spawn);
|
2006-12-16 16:05:58 -07:00
|
|
|
struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
|
|
|
|
u32 mask);
|
2006-09-20 19:39:29 -06:00
|
|
|
|
2006-08-06 07:10:45 -06:00
|
|
|
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);
|
|
|
|
|
2006-08-21 08:07:53 -06:00
|
|
|
int blkcipher_walk_done(struct blkcipher_desc *desc,
|
|
|
|
struct blkcipher_walk *walk, int err);
|
|
|
|
int blkcipher_walk_virt(struct blkcipher_desc *desc,
|
|
|
|
struct blkcipher_walk *walk);
|
|
|
|
int blkcipher_walk_phys(struct blkcipher_desc *desc,
|
|
|
|
struct blkcipher_walk *walk);
|
|
|
|
|
|
|
|
static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
|
|
|
|
{
|
|
|
|
unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
|
|
|
|
unsigned long align = crypto_tfm_alg_alignmask(tfm);
|
|
|
|
|
|
|
|
if (align <= crypto_tfm_ctx_alignment())
|
|
|
|
align = 1;
|
|
|
|
return (void *)ALIGN(addr, align);
|
|
|
|
}
|
|
|
|
|
2006-08-06 05:16:34 -06:00
|
|
|
static inline void *crypto_instance_ctx(struct crypto_instance *inst)
|
|
|
|
{
|
|
|
|
return inst->__ctx;
|
|
|
|
}
|
|
|
|
|
2006-08-21 08:07:53 -06:00
|
|
|
static inline void *crypto_blkcipher_ctx(struct crypto_blkcipher *tfm)
|
|
|
|
{
|
|
|
|
return crypto_tfm_ctx(&tfm->base);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void *crypto_blkcipher_ctx_aligned(struct crypto_blkcipher *tfm)
|
|
|
|
{
|
|
|
|
return crypto_tfm_ctx_aligned(&tfm->base);
|
|
|
|
}
|
|
|
|
|
2006-12-16 16:05:58 -07:00
|
|
|
static inline struct crypto_cipher *crypto_spawn_cipher(
|
|
|
|
struct crypto_spawn *spawn)
|
|
|
|
{
|
|
|
|
u32 type = CRYPTO_ALG_TYPE_CIPHER;
|
|
|
|
u32 mask = CRYPTO_ALG_TYPE_MASK;
|
|
|
|
|
|
|
|
return __crypto_cipher_cast(crypto_spawn_tfm(spawn, type, mask));
|
|
|
|
}
|
|
|
|
|
2006-08-13 04:58:18 -06:00
|
|
|
static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
|
|
|
|
{
|
|
|
|
return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
|
|
|
|
}
|
|
|
|
|
2006-12-16 16:05:58 -07:00
|
|
|
static inline struct crypto_hash *crypto_spawn_hash(struct crypto_spawn *spawn)
|
|
|
|
{
|
|
|
|
u32 type = CRYPTO_ALG_TYPE_HASH;
|
|
|
|
u32 mask = CRYPTO_ALG_TYPE_HASH_MASK;
|
|
|
|
|
|
|
|
return __crypto_hash_cast(crypto_spawn_tfm(spawn, type, mask));
|
|
|
|
}
|
|
|
|
|
2006-08-19 06:24:23 -06:00
|
|
|
static inline void *crypto_hash_ctx_aligned(struct crypto_hash *tfm)
|
|
|
|
{
|
|
|
|
return crypto_tfm_ctx_aligned(&tfm->base);
|
|
|
|
}
|
|
|
|
|
2006-08-21 08:07:53 -06:00
|
|
|
static inline void blkcipher_walk_init(struct blkcipher_walk *walk,
|
|
|
|
struct scatterlist *dst,
|
|
|
|
struct scatterlist *src,
|
|
|
|
unsigned int nbytes)
|
|
|
|
{
|
|
|
|
walk->in.sg = src;
|
|
|
|
walk->out.sg = dst;
|
|
|
|
walk->total = nbytes;
|
|
|
|
}
|
|
|
|
|
2006-08-21 05:08:13 -06:00
|
|
|
#endif /* _CRYPTO_ALGAPI_H */
|
|
|
|
|