mirror of
https://github.com/koverstreet/bcachefs-tools.git
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b5fd066153
We just wanted c sourcefiles out of the top level, not c source directories. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/*
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* Hash: Hash algorithms under the crypto API
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*
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* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#ifndef _CRYPTO_HASH_H
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#define _CRYPTO_HASH_H
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#include <linux/crypto.h>
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struct shash_desc;
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struct shash_alg {
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int (*init)(struct shash_desc *desc);
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int (*update)(struct shash_desc *desc, const u8 *data, unsigned len);
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int (*final)(struct shash_desc *desc, u8 *out);
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int (*finup)(struct shash_desc *desc, const u8 *data,
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unsigned len, u8 *out);
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int (*digest)(struct shash_desc *desc, const u8 *data,
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unsigned len, u8 *out);
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unsigned descsize;
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unsigned digestsize;
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struct crypto_alg base;
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};
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int crypto_register_shash(struct shash_alg *alg);
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struct crypto_shash {
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unsigned descsize;
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struct crypto_tfm base;
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};
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struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type,
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u32 mask);
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static inline void crypto_free_shash(struct crypto_shash *tfm)
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{
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kfree(tfm);
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}
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static inline struct shash_alg *crypto_shash_alg(struct crypto_shash *tfm)
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{
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return container_of(tfm->base.alg, struct shash_alg, base);
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}
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static inline unsigned crypto_shash_digestsize(struct crypto_shash *tfm)
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{
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return crypto_shash_alg(tfm)->digestsize;
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}
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static inline unsigned crypto_shash_descsize(struct crypto_shash *tfm)
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{
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return tfm->descsize;
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}
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struct shash_desc {
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struct crypto_shash *tfm;
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u32 flags;
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void *ctx[] CRYPTO_MINALIGN_ATTR;
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};
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#define SHASH_DESC_ON_STACK(shash, tfm) \
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char __##shash##_desc[sizeof(struct shash_desc) + \
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crypto_shash_descsize(tfm)] CRYPTO_MINALIGN_ATTR; \
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struct shash_desc *shash = (struct shash_desc *)__##shash##_desc
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static inline int crypto_shash_init(struct shash_desc *desc)
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{
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return crypto_shash_alg(desc->tfm)->init(desc);
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}
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static inline int crypto_shash_update(struct shash_desc *desc,
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const u8 *data, unsigned len)
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{
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return crypto_shash_alg(desc->tfm)->update(desc, data, len);
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}
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static inline int crypto_shash_final(struct shash_desc *desc, u8 *out)
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{
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return crypto_shash_alg(desc->tfm)->final(desc, out);
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}
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static inline int crypto_shash_finup(struct shash_desc *desc, const u8 *data,
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unsigned len, u8 *out)
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{
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return crypto_shash_alg(desc->tfm)->finup(desc, data, len, out);
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}
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static inline int crypto_shash_digest(struct shash_desc *desc, const u8 *data,
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unsigned len, u8 *out)
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{
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return crypto_shash_alg(desc->tfm)->digest(desc, data, len, out);
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}
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#endif /* _CRYPTO_HASH_H */
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