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 int crypto_hash_walk_first_compat(struct hash_desc *hdesc, 43 struct crypto_hash_walk *walk, 44 struct scatterlist *sg, unsigned int len); 45 46 int crypto_register_shash(struct shash_alg *alg); 47 int crypto_unregister_shash(struct shash_alg *alg); 48 49 static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm) 50 { 51 return crypto_tfm_ctx(&tfm->base); 52 } 53 54 static inline struct ahash_alg *crypto_ahash_alg( 55 struct crypto_ahash *tfm) 56 { 57 return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash; 58 } 59 60 static inline int ahash_enqueue_request(struct crypto_queue *queue, 61 struct ahash_request *request) 62 { 63 return crypto_enqueue_request(queue, &request->base); 64 } 65 66 static inline struct ahash_request *ahash_dequeue_request( 67 struct crypto_queue *queue) 68 { 69 return ahash_request_cast(crypto_dequeue_request(queue)); 70 } 71 72 static inline int ahash_tfm_in_queue(struct crypto_queue *queue, 73 struct crypto_ahash *tfm) 74 { 75 return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm)); 76 } 77 78 static inline void *crypto_shash_ctx(struct crypto_shash *tfm) 79 { 80 return crypto_tfm_ctx(&tfm->base); 81 } 82 83 #endif /* _CRYPTO_INTERNAL_HASH_H */ 84 85