diff options
Diffstat (limited to 'qemu/roms/ipxe/src/arch/i386/include/ipxe/rtc_entropy.h')
-rw-r--r-- | qemu/roms/ipxe/src/arch/i386/include/ipxe/rtc_entropy.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/qemu/roms/ipxe/src/arch/i386/include/ipxe/rtc_entropy.h b/qemu/roms/ipxe/src/arch/i386/include/ipxe/rtc_entropy.h deleted file mode 100644 index e214745d0..000000000 --- a/qemu/roms/ipxe/src/arch/i386/include/ipxe/rtc_entropy.h +++ /dev/null @@ -1,62 +0,0 @@ -#ifndef _IPXE_RTC_ENTROPY_H -#define _IPXE_RTC_ENTROPY_H - -/** @file - * - * RTC-based entropy source - * - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdint.h> - -#ifdef ENTROPY_RTC -#define ENTROPY_PREFIX_rtc -#else -#define ENTROPY_PREFIX_rtc __rtc_ -#endif - -/** - * min-entropy per sample - * - * @ret min_entropy min-entropy of each sample - */ -static inline __always_inline double -ENTROPY_INLINE ( rtc, min_entropy_per_sample ) ( void ) { - - /* The min-entropy has been measured on several platforms - * using the entropy_sample test code. Modelling the samples - * as independent, and using a confidence level of 99.99%, the - * measurements were as follows: - * - * qemu-kvm : 7.38 bits - * VMware : 7.46 bits - * Physical hardware : 2.67 bits - * - * We choose the lowest of these (2.67 bits) and apply a 50% - * safety margin to allow for some potential non-independence - * of samples. - */ - return 1.3; -} - -extern uint8_t rtc_sample ( void ); - -/** - * Get noise sample - * - * @ret noise Noise sample - * @ret rc Return status code - */ -static inline __always_inline int -ENTROPY_INLINE ( rtc, get_noise ) ( noise_sample_t *noise ) { - - /* Get sample */ - *noise = rtc_sample(); - - /* Always successful */ - return 0; -} - -#endif /* _IPXE_RTC_ENTROPY_H */ |