RAND crypto functions(3) Heimdal crypto library RAND crypto functions(3)NAME
RAND crypto functions -
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.
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.
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:
1 on success.
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.
Version 1.5.3 9 Dec 2012 RAND crypto functions(3)
