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git.ipfire.org Git - thirdparty/systemd.git/blob - src/basic/khash.h
1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 This file is part of systemd.
7 Copyright 2016 Lennart Poettering
11 #include <sys/types.h>
16 typedef struct khash khash
;
18 int khash_supported(void);
20 /* For plain hash functions. Hash functions commonly supported on today's kernels are: crc32c, crct10dif, crc32,
21 * sha224, sha256, sha512, sha384, sha1, md5, md4, sha3-224, sha3-256, sha3-384, sha3-512, and more. */
22 int khash_new(khash
**ret
, const char *algorithm
);
24 /* For keyed hash functions. Hash functions commonly supported on today's kernels are: hmac(sha256), cmac(aes),
25 * cmac(des3_ede), hmac(sha3-512), hmac(sha3-384), hmac(sha3-256), hmac(sha3-224), hmac(rmd160), hmac(rmd128),
26 * hmac(sha224), hmac(sha512), hmac(sha384), hmac(sha1), hmac(md5), and more. */
27 int khash_new_with_key(khash
**ret
, const char *algorithm
, const void *key
, size_t key_size
);
29 int khash_dup(khash
*h
, khash
**ret
);
30 khash
* khash_unref(khash
*h
);
32 const char *khash_get_algorithm(khash
*h
);
33 size_t khash_get_size(khash
*h
);
35 int khash_reset(khash
*h
);
37 int khash_put(khash
*h
, const void *buffer
, size_t size
);
38 int khash_put_iovec(khash
*h
, const struct iovec
*iovec
, size_t n
);
40 int khash_digest_data(khash
*h
, const void **ret
);
41 int khash_digest_string(khash
*h
, char **ret
);
43 DEFINE_TRIVIAL_CLEANUP_FUNC(khash
*, khash_unref
);