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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Cryptographic API for algorithms (i.e., low-level API).
*
* Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
*/
#ifndef _CRYPTO_ALGAPI_H
#define _CRYPTO_ALGAPI_H
#include <linux/align.h>
#include <linux/crypto.h>
#include <linux/kconfig.h>
#include <linux/list.h>
#include <linux/types.h>
/*
* Maximum values for blocksize and alignmask, used to allocate
* static buffers that are big enough for any combination of
* algs and architectures. Ciphers have a lower maximum size.
*/
#define MAX_ALGAPI_BLOCKSIZE 160
#define MAX_ALGAPI_ALIGNMASK 63
#define MAX_CIPHER_BLOCKSIZE 16
#define MAX_CIPHER_ALIGNMASK 15
struct crypto_aead;
struct crypto_instance;
struct module;
struct notifier_block;
struct rtattr;
struct seq_file;
struct sk_buff;
struct crypto_type {
unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask);
unsigned int (*extsize)(struct crypto_alg *alg);
int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask);
int (*init_tfm)(struct crypto_tfm *tfm);
void (*show)(struct seq_file *m, struct crypto_alg *alg);
int (*report)(struct sk_buff *skb, struct crypto_alg *alg);
void (*free)(struct crypto_instance *inst);
unsigned int type;
unsigned int maskclear;
unsigned int maskset;
unsigned int tfmsize;
};
struct crypto_instance {
struct crypto_alg alg;
struct crypto_template *tmpl;
union {
/* Node in list of instances after registration. */
struct hlist_node list;
/* List of attached spawns before registration. */
struct crypto_spawn *spawns;
};
void *__ctx[] CRYPTO_MINALIGN_ATTR;
};
struct crypto_template {
struct list_head list;
struct hlist_head instances;
struct module *module;
int (*create)(struct crypto_template *tmpl, struct rtattr **tb);
char name[CRYPTO_MAX_ALG_NAME];
};
struct crypto_spawn {
struct list_head list;
struct crypto_alg *alg;
union {
/* Back pointer to instance after registration.*/
struct crypto_instance *inst;
/* Spawn list pointer prior to registration. */
struct crypto_spawn *next;
};
const struct crypto_type *frontend;
u32 mask;
bool dead;
bool registered;
};
struct crypto_queue {
struct list_head list;
struct list_head *backlog;
unsigned int qlen;
unsigned int max_qlen;
};
struct scatter_walk {
struct scatterlist *sg;
unsigned int offset;
};
struct crypto_attr_alg {
char name[CRYPTO_MAX_ALG_NAME];
};
struct crypto_attr_type {
u32 type;
u32 mask;
};
void crypto_mod_put(struct crypto_alg *alg);
int crypto_register_template(struct crypto_template *tmpl);
int crypto_register_templates(struct crypto_template *tmpls, int count);
void crypto_unregister_template(struct crypto_template *tmpl);
void crypto_unregister_templates(struct crypto_template *tmpls, int count);
struct crypto_template *crypto_lookup_template(const char *name);
int crypto_register_instance(struct crypto_template *tmpl,
struct crypto_instance *inst);
void crypto_unregister_instance(struct crypto_instance *inst);
int crypto_grab_spawn(struct crypto_spawn *spawn, struct crypto_instance *inst,
const char *name, u32 type, u32 mask);
void crypto_drop_spawn(struct crypto_spawn *spawn);
struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
u32 mask);
void *crypto_spawn_tfm2(struct crypto_spawn *spawn);
struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb);
int crypto_check_attr_type(struct rtattr **tb, u32 type, u32 *mask_ret);
const char *crypto_attr_alg_name(struct rtattr *rta);
int crypto_inst_setname(struct crypto_instance *inst, const char *name,
struct crypto_alg *alg);
void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
int crypto_enqueue_request(struct crypto_queue *queue,
struct crypto_async_request *request);
void crypto_enqueue_request_head(struct crypto_queue *queue,
struct crypto_async_request *request);
struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue);
static inline unsigned int crypto_queue_len(struct crypto_queue *queue)
{
return queue->qlen;
}
void crypto_inc(u8 *a, unsigned int size);
void __crypto_xor(u8 *dst, const u8 *src1, const u8 *src2, unsigned int size);
static inline void crypto_xor(u8 *dst, const u8 *src, unsigned int size)
{
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
__builtin_constant_p(size) &&
(size % sizeof(unsigned long)) == 0) {
unsigned long *d = (unsigned long *)dst;
unsigned long *s = (unsigned long *)src;
while (size > 0) {
*d++ ^= *s++;
size -= sizeof(unsigned long);
}
} else {
__crypto_xor(dst, dst, src, size);
}
}
static inline void crypto_xor_cpy(u8 *dst, const u8 *src1, const u8 *src2,
unsigned int size)
{
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) &&
__builtin_constant_p(size) &&
(size % sizeof(unsigned long)) == 0) {
unsigned long *d = (unsigned long *)dst;
unsigned long *s1 = (unsigned long *)src1;
unsigned long *s2 = (unsigned long *)src2;
while (size > 0) {
*d++ = *s1++ ^ *s2++;
size -= sizeof(unsigned long);
}
} else {
__crypto_xor(dst, src1, src2, size);
}
}
static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm)
{
return PTR_ALIGN(crypto_tfm_ctx(tfm),
crypto_tfm_alg_alignmask(tfm) + 1);
}
static inline struct crypto_instance *crypto_tfm_alg_instance(
struct crypto_tfm *tfm)
{
return container_of(tfm->__crt_alg, struct crypto_instance, alg);
}
static inline void *crypto_instance_ctx(struct crypto_instance *inst)
{
return inst->__ctx;
}
static inline struct crypto_async_request *crypto_get_backlog(
struct crypto_queue *queue)
{
return queue->backlog == &queue->list ? NULL :
container_of(queue->backlog, struct crypto_async_request, list);
}
static inline u32 crypto_requires_off(struct crypto_attr_type *algt, u32 off)
{
return (algt->type ^ off) & algt->mask & off;
}
/*
* When an algorithm uses another algorithm (e.g., if it's an instance of a
* template), these are the flags that should always be set on the "outer"
* algorithm if any "inner" algorithm has them set.
*/
#define CRYPTO_ALG_INHERITED_FLAGS \
(CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK | \
CRYPTO_ALG_ALLOCATES_MEMORY)
/*
* Given the type and mask that specify the flags restrictions on a template
* instance being created, return the mask that should be passed to
* crypto_grab_*() (along with type=0) to honor any request the user made to
* have any of the CRYPTO_ALG_INHERITED_FLAGS clear.
*/
static inline u32 crypto_algt_inherited_mask(struct crypto_attr_type *algt)
{
return crypto_requires_off(algt, CRYPTO_ALG_INHERITED_FLAGS);
}
noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size);
/**
* crypto_memneq - Compare two areas of memory without leaking
* timing information.
*
* @a: One area of memory
* @b: Another area of memory
* @size: The size of the area.
*
* Returns 0 when data is equal, 1 otherwise.
*/
static inline int crypto_memneq(const void *a, const void *b, size_t size)
{
return __crypto_memneq(a, b, size) != 0UL ? 1 : 0;
}
int crypto_register_notifier(struct notifier_block *nb);
int crypto_unregister_notifier(struct notifier_block *nb);
/* Crypto notification events. */
enum {
CRYPTO_MSG_ALG_REQUEST,
CRYPTO_MSG_ALG_REGISTER,
CRYPTO_MSG_ALG_LOADED,
};
#endif /* _CRYPTO_ALGAPI_H */
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| internal | Folder | 0755 |
|
|
| acompress.h | File | 8.9 KB | 0644 |
|
| aead.h | File | 18.44 KB | 0644 |
|
| aes.h | File | 2.5 KB | 0644 |
|
| akcipher.h | File | 12.92 KB | 0644 |
|
| algapi.h | File | 7.22 KB | 0644 |
|
| arc4.h | File | 484 B | 0644 |
|
| asym_tpm_subtype.h | File | 521 B | 0644 |
|
| authenc.h | File | 635 B | 0644 |
|
| b128ops.h | File | 2.26 KB | 0644 |
|
| blake2b.h | File | 1.57 KB | 0644 |
|
| blake2s.h | File | 2.72 KB | 0644 |
|
| blowfish.h | File | 415 B | 0644 |
|
| cast5.h | File | 590 B | 0644 |
|
| cast6.h | File | 607 B | 0644 |
|
| cast_common.h | File | 232 B | 0644 |
|
| chacha.h | File | 3.32 KB | 0644 |
|
| chacha20poly1305.h | File | 1.66 KB | 0644 |
|
| cryptd.h | File | 2 KB | 0644 |
|
| ctr.h | File | 1.42 KB | 0644 |
|
| curve25519.h | File | 2.02 KB | 0644 |
|
| des.h | File | 1.68 KB | 0644 |
|
| dh.h | File | 3.03 KB | 0644 |
|
| drbg.h | File | 8.99 KB | 0644 |
|
| ecc_curve.h | File | 1.31 KB | 0644 |
|
| ecdh.h | File | 2.43 KB | 0644 |
|
| engine.h | File | 3.78 KB | 0644 |
|
| gcm.h | File | 867 B | 0644 |
|
| gf128mul.h | File | 9.42 KB | 0644 |
|
| ghash.h | File | 388 B | 0644 |
|
| hash.h | File | 34.11 KB | 0644 |
|
| hash_info.h | File | 998 B | 0644 |
|
| hkdf.h | File | 524 B | 0644 |
|
| hmac.h | File | 173 B | 0644 |
|
| if_alg.h | File | 6.6 KB | 0644 |
|
| kpp.h | File | 9.97 KB | 0644 |
|
| md5.h | File | 497 B | 0644 |
|
| nhpoly1305.h | File | 2.18 KB | 0644 |
|
| null.h | File | 346 B | 0644 |
|
| padlock.h | File | 438 B | 0644 |
|
| pcrypt.h | File | 821 B | 0644 |
|
| pkcs7.h | File | 1.15 KB | 0644 |
|
| poly1305.h | File | 2.44 KB | 0644 |
|
| public_key.h | File | 3.63 KB | 0644 |
|
| rng.h | File | 6.59 KB | 0644 |
|
| scatterwalk.h | File | 2.94 KB | 0644 |
|
| serpent.h | File | 696 B | 0644 |
|
| sha1.h | File | 1.18 KB | 0644 |
|
| sha1_base.h | File | 2.45 KB | 0644 |
|
| sha2.h | File | 3.76 KB | 0644 |
|
| sha256_base.h | File | 2.56 KB | 0644 |
|
| sha3.h | File | 879 B | 0644 |
|
| sha512_base.h | File | 3.18 KB | 0644 |
|
| skcipher.h | File | 20.03 KB | 0644 |
|
| sm2.h | File | 749 B | 0644 |
|
| sm3.h | File | 897 B | 0644 |
|
| sm3_base.h | File | 2.55 KB | 0644 |
|
| sm4.h | File | 754 B | 0644 |
|
| streebog.h | File | 949 B | 0644 |
|
| twofish.h | File | 743 B | 0644 |
|
| xts.h | File | 978 B | 0644 |
|