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Pseudo-Random Number Generators


Data Structures

struct  randomGenerator
struct  randomGeneratorContext

Pseudo-random Number Generators

typedef void randomGeneratorParam
typedef int(* randomGeneratorSetup )(randomGeneratorParam *param)
typedef int(* randomGeneratorSeed )(randomGeneratorParam *param, const uint32 *data, int size)
typedef int(* randomGeneratorNext )(randomGeneratorParam *param, uint32 *data, int size)
typedef int(* randomGeneratorCleanup )(randomGeneratorParam *param)
int randomGeneratorCount (void)
const randomGeneratorrandomGeneratorGet (int index)
const randomGeneratorrandomGeneratorFind (const char *name)
const randomGeneratorrandomGeneratorDefault (void)
int randomGeneratorContextInit (randomGeneratorContext *ctxt, const randomGenerator *rng)
int randomGeneratorContextFree (randomGeneratorContext *ctxt)
int randomGeneratorContextNext (randomGeneratorContext *ctxt, uint32 *data, int size)

Typedef Documentation

typedef int(* randomGeneratorCleanup)(randomGeneratorParam* param)
 

Cleanup after using a generator.

Parameters:
param  generator parameters
Returns:
0 on success, -1 on failure

Definition at line 164 of file beecrypt.h.

typedef int(* randomGeneratorNext)(randomGeneratorParam* param, uint32* data, int size)
 

Return an array of 32-bit unsigned integers of given size with pseudo-random data.

Parameters:
param  generator parameters
Return values:
data  pseudo-random data
Parameters:
size  no. of ints of data
Returns:
0 on success, -1 on failure

Definition at line 155 of file beecrypt.h.

typedef void randomGeneratorParam
 

Definition at line 123 of file beecrypt.h.

Referenced by randomGeneratorContextFree, and randomGeneratorContextInit.

typedef int(* randomGeneratorSeed)(randomGeneratorParam* param, const uint32* data, int size)
 

Re-seed the random generator with user-provided entropy.

Parameters:
param  generator parameters
data  user entropy
size  no. of ints of entropy
Returns:
0 on success, -1 on failure

Definition at line 143 of file beecrypt.h.

typedef int(* randomGeneratorSetup)(randomGeneratorParam* param)
 

Initialize the parameters for use, and seed the generator with entropy from the default entropy source.

Parameters:
param  generator parameters
Returns:
0 on success, -1 on failure

Definition at line 132 of file beecrypt.h.


Function Documentation

int randomGeneratorContextFree randomGeneratorContext   ctxt
 

Destroy a randomGenerator instance.

Definition at line 231 of file beecrypt.c.

int randomGeneratorContextInit randomGeneratorContext   ctxt,
const randomGenerator   rng
 

Initialize a randomGenerator instance.

Definition at line 210 of file beecrypt.c.

References BEECRYPTAPI.

int randomGeneratorContextNext randomGeneratorContext   ctxt,
uint32   data,
int    size
 

Definition at line 257 of file beecrypt.c.

References BEECRYPTAPI, and uint32.

int randomGeneratorCount void   
 

Return the number of generators available.

Returns:
number of generators available

Definition at line 165 of file beecrypt.c.

const randomGenerator* randomGeneratorDefault void   
 

Retrieve the default generator. If the BEECRYPT_RANDOM environment variable is set, use that generator. Otherwise, use "fips186prng".

Returns:
generator pointer

Definition at line 198 of file beecrypt.c.

const randomGenerator* randomGeneratorFind const char *    name
 

Retrieve a generator by name.

Parameters:
name  generator name
Returns:
generator pointer (or NULL)

Definition at line 183 of file beecrypt.c.

Referenced by randomGeneratorDefault.

const randomGenerator* randomGeneratorGet int    index
 

Retrieve a generator by index.

Parameters:
index  generator index
Returns:
generator pointer (or NULL)

Definition at line 170 of file beecrypt.c.


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