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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#if HAVE_GCRYPT
#include "gcrypt-util.h"
#include "hexdecoct.h"
void initialize_libgcrypt(bool secmem) {
if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P))
return;
gcry_control(GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_SYSTEM);
assert_se(gcry_check_version("1.4.5"));
/* Turn off "secmem". Clients which wish to make use of this
* feature should initialize the library manually */
if (!secmem)
gcry_control(GCRYCTL_DISABLE_SECMEM);
gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
}
# if !PREFER_OPENSSL
int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) {
_cleanup_(gcry_md_closep) gcry_md_hd_t md = NULL;
gcry_error_t err;
size_t hash_size;
void *hash;
char *enc;
initialize_libgcrypt(false);
hash_size = gcry_md_get_algo_dlen(md_algorithm);
assert(hash_size > 0);
err = gcry_md_open(&md, md_algorithm, 0);
if (gcry_err_code(err) != GPG_ERR_NO_ERROR || !md)
return -EIO;
gcry_md_write(md, s, len);
hash = gcry_md_read(md, 0);
if (!hash)
return -EIO;
enc = hexmem(hash, hash_size);
if (!enc)
return -ENOMEM;
*out = enc;
return 0;
}
# endif
#endif
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