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File Content: `skcipher.h`

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Symmetric key ciphers.
 * 
 * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au>
 */

#ifndef _CRYPTO_INTERNAL_SKCIPHER_H
#define _CRYPTO_INTERNAL_SKCIPHER_H

#include <crypto/algapi.h>
#include <crypto/skcipher.h>
#include <linux/list.h>
#include <linux/types.h>

struct aead_request;
struct rtattr;

struct skcipher_instance {
	void (*free)(struct skcipher_instance *inst);
	union {
		struct {
			char head[offsetof(struct skcipher_alg, base)];
			struct crypto_instance base;
		} s;
		struct skcipher_alg alg;
	};
};

struct crypto_skcipher_spawn {
	struct crypto_spawn base;
};

struct skcipher_walk {
	union {
		struct {
			struct page *page;
			unsigned long offset;
		} phys;

		struct {
			u8 *page;
			void *addr;
		} virt;
	} src, dst;

	struct scatter_walk in;
	unsigned int nbytes;

	struct scatter_walk out;
	unsigned int total;

	struct list_head buffers;

	u8 *page;
	u8 *buffer;
	u8 *oiv;
	void *iv;

	unsigned int ivsize;

	int flags;
	unsigned int blocksize;
	unsigned int stride;
	unsigned int alignmask;
};

static inline struct crypto_instance *skcipher_crypto_instance(
	struct skcipher_instance *inst)
{
	return &inst->s.base;
}

static inline struct skcipher_instance *skcipher_alg_instance(
	struct crypto_skcipher *skcipher)
{
	return container_of(crypto_skcipher_alg(skcipher),
			    struct skcipher_instance, alg);
}

static inline void *skcipher_instance_ctx(struct skcipher_instance *inst)
{
	return crypto_instance_ctx(skcipher_crypto_instance(inst));
}

static inline void skcipher_request_complete(struct skcipher_request *req, int err)
{
	req->base.complete(&req->base, err);
}

static inline void crypto_set_skcipher_spawn(
	struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
{
	crypto_set_spawn(&spawn->base, inst);
}

int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
			 u32 type, u32 mask);

static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
{
	crypto_drop_spawn(&spawn->base);
}

static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
	struct crypto_skcipher_spawn *spawn)
{
	return container_of(spawn->base.alg, struct skcipher_alg, base);
}

static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
	struct crypto_skcipher_spawn *spawn)
{
	return crypto_skcipher_spawn_alg(spawn);
}

static inline struct crypto_skcipher *crypto_spawn_skcipher(
	struct crypto_skcipher_spawn *spawn)
{
	return crypto_spawn_tfm2(&spawn->base);
}

static inline void crypto_skcipher_set_reqsize(
	struct crypto_skcipher *skcipher, unsigned int reqsize)
{
	skcipher->reqsize = reqsize;
}

int crypto_register_skcipher(struct skcipher_alg *alg);
void crypto_unregister_skcipher(struct skcipher_alg *alg);
int crypto_register_skciphers(struct skcipher_alg *algs, int count);
void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);
int skcipher_register_instance(struct crypto_template *tmpl,
			       struct skcipher_instance *inst);

int skcipher_walk_done(struct skcipher_walk *walk, int err);
int skcipher_walk_virt(struct skcipher_walk *walk,
		       struct skcipher_request *req,
		       bool atomic);
void skcipher_walk_atomise(struct skcipher_walk *walk);
int skcipher_walk_async(struct skcipher_walk *walk,
			struct skcipher_request *req);
int skcipher_walk_aead(struct skcipher_walk *walk, struct aead_request *req,
		       bool atomic);
int skcipher_walk_aead_encrypt(struct skcipher_walk *walk,
			       struct aead_request *req, bool atomic);
int skcipher_walk_aead_decrypt(struct skcipher_walk *walk,
			       struct aead_request *req, bool atomic);
void skcipher_walk_complete(struct skcipher_walk *walk, int err);

static inline void skcipher_walk_abort(struct skcipher_walk *walk)
{
	skcipher_walk_done(walk, -ECANCELED);
}

static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
					       int err)
{
	req->base.complete(&req->base, err);
}

static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
{
	return req->base.flags;
}

static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
{
	return crypto_tfm_ctx(&tfm->base);
}

static inline void *skcipher_request_ctx(struct skcipher_request *req)
{
	return req->__ctx;
}

static inline u32 skcipher_request_flags(struct skcipher_request *req)
{
	return req->base.flags;
}

static inline unsigned int crypto_skcipher_alg_min_keysize(
	struct skcipher_alg *alg)
{
	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	    CRYPTO_ALG_TYPE_BLKCIPHER)
		return alg->base.cra_blkcipher.min_keysize;

	if (alg->base.cra_ablkcipher.encrypt)
		return alg->base.cra_ablkcipher.min_keysize;

	return alg->min_keysize;
}

static inline unsigned int crypto_skcipher_alg_max_keysize(
	struct skcipher_alg *alg)
{
	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	    CRYPTO_ALG_TYPE_BLKCIPHER)
		return alg->base.cra_blkcipher.max_keysize;

	if (alg->base.cra_ablkcipher.encrypt)
		return alg->base.cra_ablkcipher.max_keysize;

	return alg->max_keysize;
}

static inline unsigned int crypto_skcipher_alg_walksize(
	struct skcipher_alg *alg)
{
	if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
	    CRYPTO_ALG_TYPE_BLKCIPHER)
		return alg->base.cra_blocksize;

	if (alg->base.cra_ablkcipher.encrypt)
		return alg->base.cra_blocksize;

	return alg->walksize;
}

/**
 * crypto_skcipher_walksize() - obtain walk size
 * @tfm: cipher handle
 *
 * In some cases, algorithms can only perform optimally when operating on
 * multiple blocks in parallel. This is reflected by the walksize, which
 * must be a multiple of the chunksize (or equal if the concern does not
 * apply)
 *
 * Return: walk size in bytes
 */
static inline unsigned int crypto_skcipher_walksize(
	struct crypto_skcipher *tfm)
{
	return crypto_skcipher_alg_walksize(crypto_skcipher_alg(tfm));
}

/* Helpers for simple block cipher modes of operation */
struct skcipher_ctx_simple {
	struct crypto_cipher *cipher;	/* underlying block cipher */
};
static inline struct crypto_cipher *
skcipher_cipher_simple(struct crypto_skcipher *tfm)
{
	struct skcipher_ctx_simple *ctx = crypto_skcipher_ctx(tfm);

	return ctx->cipher;
}
struct skcipher_instance *
skcipher_alloc_instance_simple(struct crypto_template *tmpl, struct rtattr **tb,
			       struct crypto_alg **cipher_alg_ret);

#endif	/* _CRYPTO_INTERNAL_SKCIPHER_H */

Name	Size	Permission
acompress.h	1892 bytes	0644
aead.h	4590 bytes	0644
akcipher.h	3510 bytes	0644
blake2s.h	509 bytes	0644
cryptouser.h	453 bytes	0644
des.h	3949 bytes	0644
geniv.h	772 bytes	0644
hash.h	6270 bytes	0644
kpp.h	1362 bytes	0644
rng.h	1021 bytes	0644
rsa.h	1643 bytes	0644
scompress.h	3476 bytes	0644
simd.h	2293 bytes	0644
skcipher.h	6390 bytes	0644

Command Bosku:

File Content: skcipher.h

File Content: `skcipher.h`