| RAND_DRBG_SET_EX_DATA(3SSL) | OpenSSL | RAND_DRBG_SET_EX_DATA(3SSL) |
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
#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);
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.
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.
RAND_DRBG_get_ex_new_index(...) is implemented as a macro and equivalent to CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG,...).
CRYPTO_get_ex_data(3), CRYPTO_set_ex_data(3), CRYPTO_get_ex_new_index(3), RAND_DRBG(7)
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>.
| 2023-09-13 | 1.1.1w |