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.tr \(*W- . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
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Title "RAND_GET0_PRIMARY 3"
way too many mistakes in technical documents.
The public and private \s-1DRBG\s0 are thread-local instances, which are used by RAND_bytes() and RAND_priv_bytes(), respectively. The primary \s-1DRBG\s0 is a global instance, which is not intended to be used directly, but is used internally to reseed the other two instances.
These functions here provide access to the shared \s-1DRBG\s0 instances.
\fBRAND_get0_public() returns a pointer to the public \s-1DRBG\s0 instance for the given \s-1OSSL_LIB_CTX\s0 ctx.
\fBRAND_get0_private() returns a pointer to the private \s-1DRBG\s0 instance for the given \s-1OSSL_LIB_CTX\s0 ctx.
In all the above cases the ctx parameter can be \s-1NULL\s0 in which case the default \s-1OSSL_LIB_CTX\s0 is used.
For that reason it is recommended not to change the settings of these three instances directly. Instead, an application should change the default settings for new \s-1DRBG\s0 instances at initialization time, before creating additional threads.
During initialization, it is possible to change the reseed interval and reseed time interval. It is also possible to exchange the reseeding callbacks entirely.
To set the type of \s-1DRBG\s0 that will be instantiated, use the \fBRAND_set_DRBG_type\|(3) call before accessing the random number generation infrastructure.
Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.