rbg.h File Reference

RBG mechanism. More...

#include <stdint.h>
#include <ipxe/drbg.h>

Go to the source code of this file.

Data Structures
struct	random_bit_generator
	An RBG. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
	FILE_SECBOOT (PERMITTED)
int	rbg_generate (const void *additional, size_t additional_len, int prediction_resist, void *data, size_t len)
	Generate bits using RBG.

Variables
struct random_bit_generator	rbg
	The RBG.

Detailed Description

RBG mechanism.

Definition in file rbg.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

FILE_SECBOOT()

FILE_SECBOOT

(

PERMITTED

)

rbg_generate()

int rbg_generate ( const void * additional, size_t additional_len, int prediction_resist, void * data, size_t len )

extern

Generate bits using RBG.

Parameters

additional	Additional input
additional_len	Length of additional input
prediction_resist	Prediction resistance is required
data	Output buffer
len	Length of output buffer

Return values

rc	Return status code

This is the RBG_Generate function defined in ANS X9.82 Part 4 (April 2011 Draft) Section 9.1.2.2.

Definition at line 117 of file rbg.c.

                                                                   {
 
        /* Attempt startup, if not already attempted */
        if ( ! rbg.started )
                rbg_startup();
 
        /* Generate bits.  The DRBG will itself return an error if it
         * is not valid (e.g. due to an instantiation failure).
         */
        return drbg_generate ( &rbg.state, additional, additional_len,
                               prediction_resist, data, len );
}

References additional, data, drbg_generate(), len, rbg, and rbg_startup().

Referenced by get_random_nz(), tls_generate_random(), and wpa_handle_1_of_4().

Variable Documentation

rbg

struct random_bit_generator rbg

extern

The RBG.

Definition at line 64 of file rbg.c.

Referenced by rbg_generate(), rbg_shutdown(), rbg_startup(), and rbg_startup_fn().