From 5af9e6219646ace094cfe35caa0125cbff8f38f8 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Sun, 18 Mar 2012 17:03:58 +0000 Subject: [rng] Add Linux entropy source using /dev/random Signed-off-by: Michael Brown --- src/include/ipxe/linux/linux_entropy.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/include/ipxe/linux/linux_entropy.h (limited to 'src/include/ipxe/linux') diff --git a/src/include/ipxe/linux/linux_entropy.h b/src/include/ipxe/linux/linux_entropy.h new file mode 100644 index 000000000..bd89bd52f --- /dev/null +++ b/src/include/ipxe/linux/linux_entropy.h @@ -0,0 +1,32 @@ +#ifndef _IPXE_LINUX_ENTROPY_H +#define _IPXE_LINUX_ENTROPY_H + +/** @file + * + * iPXE entropy API for linux + * + */ + +FILE_LICENCE(GPL2_OR_LATER); + +#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 ) { + + /* We read single bytes from /dev/random and assume that each + * contains full entropy. + */ + return 8; +} + +#endif /* _IPXE_LINUX_ENTROPY_H */ -- cgit v1.2.3-55-g7522