LXR linux/include/crypto/internal/skcipher.h

   1/*
   2 * Symmetric key ciphers.
   3 * 
   4 * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au>
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License as published by the Free
   8 * Software Foundation; either version 2 of the License, or (at your option) 
   9 * any later version.
  10 *
  11 */
  12
  13#ifndef _CRYPTO_INTERNAL_SKCIPHER_H
  14#define _CRYPTO_INTERNAL_SKCIPHER_H
  15
  16#include <crypto/algapi.h>
  17#include <crypto/skcipher.h>
  18#include <linux/types.h>
  19
  20struct rtattr;
  21
  22struct crypto_skcipher_spawn {
  23        struct crypto_spawn base;
  24};
  25
  26extern const struct crypto_type crypto_givcipher_type;
  27
  28static inline void crypto_set_skcipher_spawn(
  29        struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
  30{
  31        crypto_set_spawn(&spawn->base, inst);
  32}
  33
  34int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
  35                         u32 type, u32 mask);
  36
  37static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
  38{
  39        crypto_drop_spawn(&spawn->base);
  40}
  41
  42static inline struct crypto_alg *crypto_skcipher_spawn_alg(
  43        struct crypto_skcipher_spawn *spawn)
  44{
  45        return spawn->base.alg;
  46}
  47
  48static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
  49        struct crypto_skcipher_spawn *spawn)
  50{
  51        return __crypto_ablkcipher_cast(
  52                crypto_spawn_tfm(&spawn->base, crypto_skcipher_type(0),
  53                                 crypto_skcipher_mask(0)));
  54}
  55
  56int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
  57int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
  58const char *crypto_default_geniv(const struct crypto_alg *alg);
  59
  60struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
  61                                             struct rtattr **tb, u32 type,
  62                                             u32 mask);
  63void skcipher_geniv_free(struct crypto_instance *inst);
  64int skcipher_geniv_init(struct crypto_tfm *tfm);
  65void skcipher_geniv_exit(struct crypto_tfm *tfm);
  66
  67static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
  68        struct crypto_ablkcipher *geniv)
  69{
  70        return crypto_ablkcipher_crt(geniv)->base;
  71}
  72
  73static inline int skcipher_enqueue_givcrypt(
  74        struct crypto_queue *queue, struct skcipher_givcrypt_request *request)
  75{
  76        return ablkcipher_enqueue_request(queue, &request->creq);
  77}
  78
  79static inline struct skcipher_givcrypt_request *skcipher_dequeue_givcrypt(
  80        struct crypto_queue *queue)
  81{
  82        return __crypto_dequeue_request(
  83                queue, offsetof(struct skcipher_givcrypt_request, creq.base));
  84}
  85
  86static inline void *skcipher_givcrypt_reqctx(
  87        struct skcipher_givcrypt_request *req)
  88{
  89        return ablkcipher_request_ctx(&req->creq);
  90}
  91
  92static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
  93                                               int err)
  94{
  95        req->base.complete(&req->base, err);
  96}
  97
  98static inline void skcipher_givcrypt_complete(
  99        struct skcipher_givcrypt_request *req, int err)
 100{
 101        ablkcipher_request_complete(&req->creq, err);
 102}
 103
 104static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
 105{
 106        return req->base.flags;
 107}
 108
 109#endif  /* _CRYPTO_INTERNAL_SKCIPHER_H */
 110
 111