hcrypto_rand - Online Linux Manual PageSection : 3
Updated : Tue Nov 15 2022
Source : Version 7.8.0
Note : Heimdal crypto library

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NAMEhcrypto_rand − RAND crypto functions

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SYNOPSIS

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Functionsvoid 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)

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Detailed DescriptionSee the RAND - random number for description and examples​.

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Function Documentation

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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​.

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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​.

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void RAND_cleanup (void)Reset and free memory used by the random generator​.

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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​.

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const RAND_METHOD* RAND_get_rand_method (void)Get the default random method​. Returns Returns a RAND_METHOD

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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)

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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​.

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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

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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​.

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int RAND_set_rand_method (const RAND_METHOD * meth)Set the default random method​. Parameters meth set the new default method​. Returns 1 on success​.

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int RAND_status (void)Return status of the random generator Returns 1 if the random generator can deliver random data​.

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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​.

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AuthorGenerated automatically by Doxygen for Heimdal crypto library from the source code​. 0

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Johanes Gumabo

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