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-rw-r--r--CryptoPP/blumshub.cpp63
1 files changed, 0 insertions, 63 deletions
diff --git a/CryptoPP/blumshub.cpp b/CryptoPP/blumshub.cpp
deleted file mode 100644
index be9b75829..000000000
--- a/CryptoPP/blumshub.cpp
+++ /dev/null
@@ -1,63 +0,0 @@
-// blumshub.cpp - written and placed in the public domain by Wei Dai
-
-#include "pch.h"
-#include "blumshub.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-PublicBlumBlumShub::PublicBlumBlumShub(const Integer &n, const Integer &seed)
- : modn(n),
- maxBits(BitPrecision(n.BitCount())-1)
-{
- current = modn.Square(modn.Square(seed));
- bitsLeft = maxBits;
-}
-
-unsigned int PublicBlumBlumShub::GenerateBit()
-{
- if (bitsLeft==0)
- {
- current = modn.Square(current);
- bitsLeft = maxBits;
- }
-
- return current.GetBit(--bitsLeft);
-}
-
-byte PublicBlumBlumShub::GenerateByte()
-{
- byte b=0;
- for (int i=0; i<8; i++)
- b = (b << 1) | PublicBlumBlumShub::GenerateBit();
- return b;
-}
-
-void PublicBlumBlumShub::GenerateBlock(byte *output, size_t size)
-{
- while (size--)
- *output++ = PublicBlumBlumShub::GenerateByte();
-}
-
-void PublicBlumBlumShub::ProcessData(byte *outString, const byte *inString, size_t length)
-{
- while (length--)
- *outString++ = *inString++ ^ PublicBlumBlumShub::GenerateByte();
-}
-
-BlumBlumShub::BlumBlumShub(const Integer &p, const Integer &q, const Integer &seed)
- : PublicBlumBlumShub(p*q, seed),
- p(p), q(q),
- x0(modn.Square(seed))
-{
-}
-
-void BlumBlumShub::Seek(lword index)
-{
- Integer i(Integer::POSITIVE, index);
- i *= 8;
- Integer e = a_exp_b_mod_c (2, i / maxBits + 1, (p-1)*(q-1));
- current = modn.Exponentiate(x0, e);
- bitsLeft = maxBits - i % maxBits;
-}
-
-NAMESPACE_END