2 * Cryptographic API for algorithms (i.e., low-level API).
4 * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au>
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)
12 #ifndef _CRYPTO_ALGAPI_H
13 #define _CRYPTO_ALGAPI_H
15 #include <linux/crypto.h>
21 unsigned int (*ctxsize)(struct crypto_alg *alg);
22 int (*init)(struct crypto_tfm *tfm);
23 void (*exit)(struct crypto_tfm *tfm);
24 void (*show)(struct seq_file *m, struct crypto_alg *alg);
27 struct crypto_instance {
28 struct crypto_alg alg;
30 struct crypto_template *tmpl;
31 struct hlist_node list;
33 void *__ctx[] CRYPTO_MINALIGN_ATTR;
36 struct crypto_template {
37 struct list_head list;
38 struct hlist_head instances;
39 struct module *module;
41 struct crypto_instance *(*alloc)(void *param, unsigned int len);
42 void (*free)(struct crypto_instance *inst);
44 char name[CRYPTO_MAX_ALG_NAME];
48 struct list_head list;
49 struct crypto_alg *alg;
50 struct crypto_instance *inst;
54 struct scatterlist *sg;
58 int crypto_register_template(struct crypto_template *tmpl);
59 void crypto_unregister_template(struct crypto_template *tmpl);
60 struct crypto_template *crypto_lookup_template(const char *name);
62 int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg,
63 struct crypto_instance *inst);
64 void crypto_drop_spawn(struct crypto_spawn *spawn);
65 struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn);
67 struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len,
69 struct crypto_instance *crypto_alloc_instance(const char *name,
70 struct crypto_alg *alg);
72 static inline void *crypto_instance_ctx(struct crypto_instance *inst)
77 static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm)
79 return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher;
82 #endif /* _CRYPTO_ALGAPI_H */