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Port the big number routines to 64-bit systems

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This commit is contained in:
Rhys Weatherley
2016-03-27 07:52:55 +10:00
parent 9ff24b0ddf
commit 5c4d7ce69a
8 changed files with 203 additions and 53 deletions
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9
libraries/Crypto/utility/LimbUtil.h
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@@ -42,20 +42,29 @@
#define pgm_read_limb(x) (pgm_read_word((x)))
#elif BIGNUMBER_LIMB_32BIT
#define pgm_read_limb(x) (pgm_read_dword((x)))
#elif BIGNUMBER_LIMB_64BIT
#define pgm_read_limb(x) (pgm_read_qword((x)))
#endif
// Expand a 32-bit value into a set of limbs depending upon the limb size.
// This is used when initializing constant big number values in the code.
// For 64-bit system compatibility it is necessary to use LIMB_PAIR(x, y).
#if BIGNUMBER_LIMB_8BIT
#define LIMB(value) ((uint8_t)(value)), \
((uint8_t)((value) >> 8)), \
((uint8_t)((value) >> 16)), \
((uint8_t)((value) >> 24))
#define LIMB_PAIR(x,y) LIMB((x)), LIMB((y))
#elif BIGNUMBER_LIMB_16BIT
#define LIMB(value) ((uint16_t)(value)), \
((uint16_t)((value) >> 16))
#define LIMB_PAIR(x,y) LIMB((x)), LIMB((y))
#elif BIGNUMBER_LIMB_32BIT
#define LIMB(value) (value)
#define LIMB_PAIR(x,y) LIMB((x)), LIMB((y))
#elif BIGNUMBER_LIMB_64BIT
#define LIMB(value) (value)
#define LIMB_PAIR(x,y) ((((uint64_t)(y)) << 32) | ((uint64_t)(x)))
#endif
#endif