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authorAlexander Harkness <bearbin@gmail.com>2013-11-24 15:21:13 +0100
committerAlexander Harkness <bearbin@gmail.com>2013-11-24 15:21:13 +0100
commit3438e5d3ddf8444f0e31009ffbe8237ef3752c22 (patch)
tree7c2f76d5e9281c130e60fb932c4dda89a49863b6 /lib/cryptopp/gf2_32.h
parentMoved source to src (diff)
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Diffstat (limited to 'lib/cryptopp/gf2_32.h')
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diff --git a/lib/cryptopp/gf2_32.h b/lib/cryptopp/gf2_32.h
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+++ b/lib/cryptopp/gf2_32.h
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+#ifndef CRYPTOPP_GF2_32_H
+#define CRYPTOPP_GF2_32_H
+
+#include "cryptlib.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! GF(2^32) with polynomial basis
+class GF2_32
+{
+public:
+ typedef word32 Element;
+ typedef int RandomizationParameter;
+
+ GF2_32(word32 modulus=0x0000008D) : m_modulus(modulus) {}
+
+ Element RandomElement(RandomNumberGenerator &rng, int ignored = 0) const
+ {return rng.GenerateWord32();}
+
+ bool Equal(Element a, Element b) const
+ {return a==b;}
+
+ Element Identity() const
+ {return 0;}
+
+ Element Add(Element a, Element b) const
+ {return a^b;}
+
+ Element& Accumulate(Element &a, Element b) const
+ {return a^=b;}
+
+ Element Inverse(Element a) const
+ {return a;}
+
+ Element Subtract(Element a, Element b) const
+ {return a^b;}
+
+ Element& Reduce(Element &a, Element b) const
+ {return a^=b;}
+
+ Element Double(Element a) const
+ {return 0;}
+
+ Element MultiplicativeIdentity() const
+ {return 1;}
+
+ Element Multiply(Element a, Element b) const;
+
+ Element Square(Element a) const
+ {return Multiply(a, a);}
+
+ bool IsUnit(Element a) const
+ {return a != 0;}
+
+ Element MultiplicativeInverse(Element a) const;
+
+ Element Divide(Element a, Element b) const
+ {return Multiply(a, MultiplicativeInverse(b));}
+
+private:
+ word32 m_modulus;
+};
+
+NAMESPACE_END
+
+#endif