$NetBSD: hcrypto_rand.3,v 1.3 2023/06/19 21:41:39 christos Exp $ "hcrypto_rand" 3 "Tue Nov 15 2022" "Version 7.8.0" "Heimdal crypto library" \" -*- nroff -*-
NAME
hcrypto_rand - RAND crypto functions
SYNOPSIS
"Functions"
"void RAND_seed (const void *indata, size_t size)"
"int RAND_bytes (void *outdata, size_t size)"
"void RAND_cleanup (void)"
"void RAND_add (const void *indata, size_t size, double entropi)"
"int RAND_pseudo_bytes (void *outdata, size_t size)"
"int RAND_status (void)"
"int RAND_set_rand_method (const RAND_METHOD *meth)"
"const RAND_METHOD * RAND_get_rand_method (void)"
"int RAND_set_rand_engine (ENGINE *engine)"
"int RAND_load_file (const char *filename, size_t size)"
"int RAND_write_file (const char *filename)"
"const char * RAND_file_name (char *filename, size_t size)"
"Detailed Description"
See the RAND - random number for description and examples.
"Function Documentation"
"void RAND_add (const void * indata, size_t size, double entropi)"
Seed that random number generator. Secret material can securely be feed into the function, they will never be returned.
Parameters
indata the input data.
size size of in data.
entropi entropi in data.
"int RAND_bytes (void * outdata, size_t size)"
Get a random block from the random generator, can be used for key material.
Parameters
outdata random data
size length random data
Returns
1 on success, 0 on failure.
"void RAND_cleanup (void)"
Reset and free memory used by the random generator.
"const char* RAND_file_name (char * filename, size_t size)"
Return the default random state filename for a user to use for
RAND_load_file(), and
RAND_write_file().
Parameters
filename buffer to hold file name.
size size of buffer filename.
Returns
the buffer filename or NULL on failure.
"const RAND_METHOD* RAND_get_rand_method (void)"
Get the default random method.
Returns
"int RAND_load_file (const char * filename, size_t size)"
Load a a file and feed it into
RAND_seed().
Parameters
filename name of file to read.
size minimum size to read.
Returns
Returns the number of seed bytes loaded (0 indicates failure)
"int RAND_pseudo_bytes (void * outdata, size_t size)"
Get a random block from the random generator, should NOT be used for key material.
Parameters
outdata random data
size length random data
Returns
1 on success, 0 on failure.
"void RAND_seed (const void * indata, size_t size)"
Seed that random number generator. Secret material can securely be feed into the function, they will never be returned.
Parameters
indata seed data
size length seed data
"int RAND_set_rand_engine (ENGINE * engine)"
Set the default random method from engine.
Parameters
engine use engine, if NULL is passed it, old method and engine is cleared.
Returns
1 on success, 0 on failure.
"int RAND_set_rand_method (const RAND_METHOD * meth)"
Set the default random method.
Parameters
meth set the new default method.
Returns
"int RAND_status (void)"
Return status of the random generator
Returns
1 if the random generator can deliver random data.
"int RAND_write_file (const char * filename)"
Write of random numbers to a file to store for later initiation with
RAND_load_file().
Parameters
filename name of file to write.
Returns
1 on success and non-one on failure.
"Author"
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