RAND_DRBG_set_ex_data(3) OpenSSL RAND_DRBG_set_ex_data(3)
NAME
RAND_DRBG_set_ex_data, RAND_DRBG_get_ex_data,
RAND_DRBG_get_ex_new_index - store and retrieve extra data from the
DRBG instance
SYNOPSIS
#include <openssl/rand_drbg.h>
int RAND_DRBG_set_ex_data(RAND_DRBG *drbg, int idx, void *data);
void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx);
int RAND_DRBG_get_ex_new_index(long argl, void *argp,
CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func,
CRYPTO_EX_free *free_func);
DESCRIPTION
RAND_DRBG_set_ex_data() enables an application to store arbitrary
application specific data data in a RAND_DRBG instance drbg. The index
idx should be a value previously returned from a call to
RAND_DRBG_get_ex_new_index().
RAND_DRBG_get_ex_data() retrieves application specific data previously
stored in an RAND_DRBG instance drbg. The idx value should be the same
as that used when originally storing the data.
For more detailed information see CRYPTO_get_ex_data(3) and
CRYPTO_set_ex_data(3) which implement these functions and
CRYPTO_get_ex_new_index(3) for generating a unique index.
RETURN VALUES
RAND_DRBG_set_ex_data() returns 1 for success or 0 for failure.
RAND_DRBG_get_ex_data() returns the previously stored value or NULL on
failure. NULL may also be a valid value.
NOTES
RAND_DRBG_get_ex_new_index(...) is implemented as a macro and
equivalent to CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG,...).
SEE ALSO
CRYPTO_get_ex_data(3), CRYPTO_set_ex_data(3),
CRYPTO_get_ex_new_index(3), RAND_DRBG(7)
COPYRIGHT
Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
1.1.1d 2019-09-10 RAND_DRBG_set_ex_data(3)
openssl 1.1.1d - Generated Sat Oct 12 18:22:15 CDT 2019