SIMPLE SOLUTIONS

RAND_DRBG_SET_EX_DATA(3SSL) - Linux man page online | Library functions

Store and retrieve extra data from.

Chapter
2020-05-27
RAND_DRBG_SET_EX_DATA(3SSL) OpenSSL RAND_DRBG_SET_EX_DATA(3SSL)

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 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>.
1.1.1 2020-05-27 RAND_DRBG_SET_EX_DATA(3SSL)
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RAND_DRBG_set_ex_data(3ssl) referred by
refer to CRYPTO_get_ex_new_index(3ssl) | RAND_DRBG(7ssl)
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