1RAND_DRBG_SET_EX_DATA(3)            OpenSSL           RAND_DRBG_SET_EX_DATA(3)
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NAME

6       RAND_DRBG_set_ex_data, RAND_DRBG_get_ex_data,
7       RAND_DRBG_get_ex_new_index - store and retrieve extra data from the
8       DRBG instance
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SYNOPSIS

11        #include <openssl/rand_drbg.h>
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13        int RAND_DRBG_set_ex_data(RAND_DRBG *drbg, int idx, void *data);
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15        void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx);
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17        int RAND_DRBG_get_ex_new_index(long argl, void *argp,
18                                       CRYPTO_EX_new *new_func,
19                                       CRYPTO_EX_dup *dup_func,
20                                       CRYPTO_EX_free *free_func);
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DESCRIPTION

23       RAND_DRBG_set_ex_data() enables an application to store arbitrary
24       application specific data data in a RAND_DRBG instance drbg. The index
25       idx should be a value previously returned from a call to
26       RAND_DRBG_get_ex_new_index().
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28       RAND_DRBG_get_ex_data() retrieves application specific data previously
29       stored in an RAND_DRBG instance drbg. The idx value should be the same
30       as that used when originally storing the data.
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32       For more detailed information see CRYPTO_get_ex_data(3) and
33       CRYPTO_set_ex_data(3) which implement these functions and
34       CRYPTO_get_ex_new_index(3) for generating a unique index.
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RETURN VALUES

37       RAND_DRBG_set_ex_data() returns 1 for success or 0 for failure.
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39       RAND_DRBG_get_ex_data() returns the previously stored value or NULL on
40       failure. NULL may also be a valid value.
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NOTES

43       RAND_DRBG_get_ex_new_index(...) is implemented as a macro and
44       equivalent to CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG,...).
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SEE ALSO

47       CRYPTO_get_ex_data(3), CRYPTO_set_ex_data(3),
48       CRYPTO_get_ex_new_index(3), RAND_DRBG(7)
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51       Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
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53       Licensed under the OpenSSL license (the "License").  You may not use
54       this file except in compliance with the License.  You can obtain a copy
55       in the file LICENSE in the source distribution or at
56       <https://www.openssl.org/source/license.html>.
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601.1.1c                            2019-05-28          RAND_DRBG_SET_EX_DATA(3)
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