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
  37struct crypto_alg *crypto_lookup_skcipher(const char *name, u32 type, u32 mask);
  38
  39static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
  40{
  41        crypto_drop_spawn(&spawn->base);
  42}
  43
  44static inline struct crypto_alg *crypto_skcipher_spawn_alg(
  45        struct crypto_skcipher_spawn *spawn)
  46{
  47        return spawn->base.alg;
  48}
  49
  50static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
  51        struct crypto_skcipher_spawn *spawn)
  52{
  53        return __crypto_ablkcipher_cast(
  54                crypto_spawn_tfm(&spawn->base, crypto_skcipher_type(0),
  55                                 crypto_skcipher_mask(0)));
  56}
  57
  58int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
  59int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
  60const char *crypto_default_geniv(const struct crypto_alg *alg);
  61
  62struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
  63                                             struct rtattr **tb, u32 type,
  64                                             u32 mask);
  65void skcipher_geniv_free(struct crypto_instance *inst);
  66int skcipher_geniv_init(struct crypto_tfm *tfm);
  67void skcipher_geniv_exit(struct crypto_tfm *tfm);
  68
  69static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
  70        struct crypto_ablkcipher *geniv)
  71{
  72        return crypto_ablkcipher_crt(geniv)->base;
  73}
  74
  75static inline int skcipher_enqueue_givcrypt(
  76        struct crypto_queue *queue, struct skcipher_givcrypt_request *request)
  77{
  78        return ablkcipher_enqueue_request(queue, &request->creq);
  79}
  80
  81static inline struct skcipher_givcrypt_request *skcipher_dequeue_givcrypt(
  82        struct crypto_queue *queue)
  83{
  84        return __crypto_dequeue_request(
  85                queue, offsetof(struct skcipher_givcrypt_request, creq.base));
  86}
  87
  88static inline void *skcipher_givcrypt_reqctx(
  89        struct skcipher_givcrypt_request *req)
  90{
  91        return ablkcipher_request_ctx(&req->creq);
  92}
  93
  94static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
  95                                               int err)
  96{
  97        req->base.complete(&req->base, err);
  98}
  99
 100static inline void skcipher_givcrypt_complete(
 101        struct skcipher_givcrypt_request *req, int err)
 102{
 103        ablkcipher_request_complete(&req->creq, err);
 104}
 105
 106static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
 107{
 108        return req->base.flags;
 109}
 110
 111static inline void *crypto_skcipher_ctx(struct crypto_skcipher *tfm)
 112{
 113        return crypto_tfm_ctx(&tfm->base);
 114}
 115
 116static inline void *skcipher_request_ctx(struct skcipher_request *req)
 117{
 118        return req->__ctx;
 119}
 120
 121static inline u32 skcipher_request_flags(struct skcipher_request *req)
 122{
 123        return req->base.flags;
 124}
 125
 126#endif  /* _CRYPTO_INTERNAL_SKCIPHER_H */
 127
 128