175 lines
4.4 KiB
C
175 lines
4.4 KiB
C
/*
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* Symmetric key ciphers.
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*
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* Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef _CRYPTO_INTERNAL_SKCIPHER_H
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#define _CRYPTO_INTERNAL_SKCIPHER_H
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#include <crypto/algapi.h>
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#include <crypto/skcipher.h>
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#include <linux/types.h>
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struct rtattr;
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struct skcipher_instance {
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void (*free)(struct skcipher_instance *inst);
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union {
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struct {
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char head[offsetof(struct skcipher_alg, base)];
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struct crypto_instance base;
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} s;
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struct skcipher_alg alg;
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};
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};
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struct crypto_skcipher_spawn {
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struct crypto_spawn base;
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};
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extern const struct crypto_type crypto_givcipher_type;
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static inline struct crypto_instance *skcipher_crypto_instance(
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struct skcipher_instance *inst)
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{
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return &inst->s.base;
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}
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static inline struct skcipher_instance *skcipher_alg_instance(
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struct crypto_skcipher *skcipher)
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{
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return container_of(crypto_skcipher_alg(skcipher),
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struct skcipher_instance, alg);
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}
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static inline void *skcipher_instance_ctx(struct skcipher_instance *inst)
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{
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return crypto_instance_ctx(skcipher_crypto_instance(inst));
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}
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static inline void skcipher_request_complete(struct skcipher_request *req, int err)
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{
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req->base.complete(&req->base, err);
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}
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static inline void crypto_set_skcipher_spawn(
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struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
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{
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crypto_set_spawn(&spawn->base, inst);
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}
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int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
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u32 type, u32 mask);
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static inline int crypto_grab_skcipher2(struct crypto_skcipher_spawn *spawn,
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const char *name, u32 type, u32 mask)
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{
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return crypto_grab_skcipher(spawn, name, type, mask);
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}
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struct crypto_alg *crypto_lookup_skcipher(const char *name, u32 type, u32 mask);
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static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
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{
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crypto_drop_spawn(&spawn->base);
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}
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static inline struct skcipher_alg *crypto_skcipher_spawn_alg(
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struct crypto_skcipher_spawn *spawn)
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{
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return container_of(spawn->base.alg, struct skcipher_alg, base);
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}
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static inline struct skcipher_alg *crypto_spawn_skcipher_alg(
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struct crypto_skcipher_spawn *spawn)
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{
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return crypto_skcipher_spawn_alg(spawn);
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}
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static inline struct crypto_skcipher *crypto_spawn_skcipher(
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struct crypto_skcipher_spawn *spawn)
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{
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return crypto_spawn_tfm2(&spawn->base);
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}
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static inline struct crypto_skcipher *crypto_spawn_skcipher2(
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struct crypto_skcipher_spawn *spawn)
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{
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return crypto_spawn_skcipher(spawn);
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}
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static inline void crypto_skcipher_set_reqsize(
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struct crypto_skcipher *skcipher, unsigned int reqsize)
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{
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skcipher->reqsize = reqsize;
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}
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int crypto_register_skcipher(struct skcipher_alg *alg);
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void crypto_unregister_skcipher(struct skcipher_alg *alg);
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int crypto_register_skciphers(struct skcipher_alg *algs, int count);
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void crypto_unregister_skciphers(struct skcipher_alg *algs, int count);
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int skcipher_register_instance(struct crypto_template *tmpl,
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struct skcipher_instance *inst);
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static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
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int err)
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{
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req->base.complete(&req->base, err);
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}
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static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
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{
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return req->base.flags;
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}
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static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
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{
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return crypto_tfm_ctx(&tfm->base);
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}
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static inline void *skcipher_request_ctx(struct skcipher_request *req)
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{
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return req->__ctx;
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}
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static inline u32 skcipher_request_flags(struct skcipher_request *req)
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{
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return req->base.flags;
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}
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static inline unsigned int crypto_skcipher_alg_min_keysize(
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struct skcipher_alg *alg)
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{
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if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
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CRYPTO_ALG_TYPE_BLKCIPHER)
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return alg->base.cra_blkcipher.min_keysize;
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if (alg->base.cra_ablkcipher.encrypt)
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return alg->base.cra_ablkcipher.min_keysize;
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return alg->min_keysize;
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}
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static inline unsigned int crypto_skcipher_alg_max_keysize(
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struct skcipher_alg *alg)
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{
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if ((alg->base.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
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CRYPTO_ALG_TYPE_BLKCIPHER)
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return alg->base.cra_blkcipher.max_keysize;
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if (alg->base.cra_ablkcipher.encrypt)
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return alg->base.cra_ablkcipher.max_keysize;
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return alg->max_keysize;
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}
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#endif /* _CRYPTO_INTERNAL_SKCIPHER_H */
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