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71 lines
1.5 KiB
71 lines
1.5 KiB
/* rsa_fast.h
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*
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* Headers for performance critical RSA routines.
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*/
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/*
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*
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* #defines used by RSA routines
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*/
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#define DIGIT_BYTES 4
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#define DIGIT_BITS 32
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#define DIGIT_HIBIT 0x80000000
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#define DIGIT_ALLONES 0xffffffff
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#define ULTRA unsigned __int64
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#define U_RADIX (ULTRA)0x100000000
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#ifndef BIGENDIAN
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#define LODWORD(x) (DWORD)(x & DIGIT_ALLONES)
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#else
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#define LODWORD(x) (DWORD)(x)
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#endif
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// warning!!!!!
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// the following macro defines a highspeed 32 bit right shift by modeling an ULTRA
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// as a low dword followed by a high dword. We just pick up the high dword instead
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// of shifting.
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#ifndef BIGENDIAN
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#define HIDWORD(x) (DWORD)(*(((DWORD *)&x)+1))
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#else
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#define HIDWORD(x) (DWORD)(*(((DWORD *)&x)))
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#endif
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// Sub(A, B, C, N)
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// A = B - C
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// All operands are N DWORDS long.
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DWORD Sub(LPDWORD A, LPDWORD B, LPDWORD C, DWORD N);
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// Add(A, B, C, N)
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// A = B + C
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// All operands are N DWORDS long.
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DWORD Add(LPDWORD A, LPDWORD B, LPDWORD C, DWORD N);
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// BaseMult(A, B, C, N)
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// A = B * C
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// returns A[N]
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// All operands are N DWORDS long.
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DWORD BaseMult(LPDWORD A, DWORD B, LPDWORD C, DWORD N);
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// Accumulate(A, B, C, N)
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// A = A + B * C
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// returns A[N]
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// All operands are N DWORDS long.
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DWORD Accumulate(LPDWORD A, DWORD B, LPDWORD C, DWORD N);
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// Reduce(A, B, C, N)
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// A = A - C * B
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// returns -A[N]
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// All operands are N DWORDS long.
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DWORD Reduce(LPDWORD A, DWORD B, LPDWORD C, DWORD N);
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// square the digits in B, and add them to A
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void AccumulateSquares(LPDWORD A, LPDWORD B, DWORD blen);
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