diff options
author | Herbert Xu <herbert@gondor.apana.org.au> | 2008-07-07 22:19:53 +0800 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2008-07-10 20:35:18 +0800 |
commit | 20036252fc61c624a49770fb89684ea5cfdfa05e (patch) | |
tree | 29db0f146bab13b399d0df9e80041fc35a64fc91 /include | |
parent | b8454eebe380677789735fd6bad368af2e6b2d1e (diff) | |
download | linux-20036252fc61c624a49770fb89684ea5cfdfa05e.tar.bz2 |
crypto: hash - Added scatter list walking helper
This patch adds the walking helpers for hash algorithms akin to
those of block ciphers. This is a necessary step before we can
reimplement existing hash algorithms using the new ahash interface.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include')
-rw-r--r-- | include/crypto/internal/hash.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h new file mode 100644 index 000000000000..93ac42280221 --- /dev/null +++ b/include/crypto/internal/hash.h @@ -0,0 +1,41 @@ +/* + * Hash algorithms. + * + * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + */ + +#ifndef _CRYPTO_INTERNAL_HASH_H +#define _CRYPTO_INTERNAL_HASH_H + +#include <crypto/algapi.h> + +struct ahash_request; +struct scatterlist; + +struct crypto_hash_walk { + char *data; + + unsigned int offset; + unsigned int alignmask; + + struct page *pg; + unsigned int entrylen; + + unsigned int total; + struct scatterlist *sg; + + unsigned int flags; +}; + +int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err); +int crypto_hash_walk_first(struct ahash_request *req, + struct crypto_hash_walk *walk); + +#endif /* _CRYPTO_INTERNAL_HASH_H */ + |