hcrypto_rand - Man Page
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
Returns a RAND_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.- 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
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.
Author
Generated automatically by Doxygen for Heimdal crypto library from the source code.
Referenced By
EVP_RAND.7ossl(7), openssl-env.7ossl(7), openssl-rand.1ossl(1), ossl-guide-migration.7ossl(7), RAND.7ossl(7), RAND_bytes.3ossl(3), s-nail(1).
The man pages RAND_add(3), RAND_bytes(3), RAND_cleanup(3), RAND_file_name(3), RAND_get_rand_method(3), RAND_load_file(3), RAND_pseudo_bytes(3), RAND_seed(3), RAND_set_rand_engine(3), RAND_set_rand_method(3), RAND_status(3) and RAND_write_file(3) are aliases of hcrypto_rand(3).