11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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***/
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#if HAVE_GCRYPT
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#include <gcrypt.h>
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#include "gcrypt-util.h"
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#include "hexdecoct.h"
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void initialize_libgcrypt(bool secmem) {
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const char *p;
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if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P))
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return;
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p = gcry_check_version("1.4.5");
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assert(p);
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/* Turn off "secmem". Clients which wish to make use of this
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* feature should initialize the library manually */
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if (!secmem)
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gcry_control(GCRYCTL_DISABLE_SECMEM);
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gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
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}
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int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) {
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_cleanup_(gcry_md_closep) gcry_md_hd_t md = NULL;
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size_t hash_size;
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void *hash;
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char *enc;
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initialize_libgcrypt(false);
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hash_size = gcry_md_get_algo_dlen(md_algorithm);
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assert(hash_size > 0);
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gcry_md_open(&md, md_algorithm, 0);
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if (!md)
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return -EIO;
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gcry_md_write(md, s, len);
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hash = gcry_md_read(md, 0);
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if (!hash)
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return -EIO;
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enc = hexmem(hash, hash_size);
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if (!enc)
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return -ENOMEM;
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*out = enc;
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return 0;
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}
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#endif
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