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#ifndef _IPXE_LINUX_ENTROPY_H
#define _IPXE_LINUX_ENTROPY_H
/** @file
*
* /dev/random-based entropy source
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#ifdef ENTROPY_LINUX
#define ENTROPY_PREFIX_linux
#else
#define ENTROPY_PREFIX_linux __linux_
#endif
/**
* min-entropy per sample
*
* @ret min_entropy min-entropy of each sample
*/
static inline __always_inline double
ENTROPY_INLINE ( linux, min_entropy_per_sample ) ( void ) {
/* linux_get_noise() reads a single byte from /dev/random,
* which is supposed to block until a sufficient amount of
* entropy is available. We therefore assume that each sample
* contains exactly 8 bits of entropy.
*/
return 8.0;
}
#endif /* _IPXE_LINUX_ENTROPY_H */
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