xref: /openbmc/linux/include/crypto/internal/hash.h (revision 9ac8d3fb)
1 /*
2  * Hash algorithms.
3  *
4  * Copyright (c) 2008 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_HASH_H
14 #define _CRYPTO_INTERNAL_HASH_H
15 
16 #include <crypto/algapi.h>
17 #include <crypto/hash.h>
18 
19 struct ahash_request;
20 struct scatterlist;
21 
22 struct crypto_hash_walk {
23 	char *data;
24 
25 	unsigned int offset;
26 	unsigned int alignmask;
27 
28 	struct page *pg;
29 	unsigned int entrylen;
30 
31 	unsigned int total;
32 	struct scatterlist *sg;
33 
34 	unsigned int flags;
35 };
36 
37 extern const struct crypto_type crypto_ahash_type;
38 
39 int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
40 int crypto_hash_walk_first(struct ahash_request *req,
41 			   struct crypto_hash_walk *walk);
42 
43 static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
44 {
45 	return crypto_tfm_ctx(&tfm->base);
46 }
47 
48 static inline struct ahash_alg *crypto_ahash_alg(
49 	struct crypto_ahash *tfm)
50 {
51 	return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash;
52 }
53 
54 static inline int ahash_enqueue_request(struct crypto_queue *queue,
55 					     struct ahash_request *request)
56 {
57 	return crypto_enqueue_request(queue, &request->base);
58 }
59 
60 static inline struct ahash_request *ahash_dequeue_request(
61 	struct crypto_queue *queue)
62 {
63 	return ahash_request_cast(crypto_dequeue_request(queue));
64 }
65 
66 static inline void *ahash_request_ctx(struct ahash_request *req)
67 {
68 	return req->__ctx;
69 }
70 
71 static inline int ahash_tfm_in_queue(struct crypto_queue *queue,
72 					  struct crypto_ahash *tfm)
73 {
74 	return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm));
75 }
76 
77 #endif	/* _CRYPTO_INTERNAL_HASH_H */
78 
79