Move all BigInt stuff into bigint/. Currently all asm modules are disabled;

configure.pl doesn't understand how to handle this yet (replace logic only
understands stuff in src, not how one module can replace another modules
src, or anything about prioritizing).

Move some hex and base64 stuff out of charset.cpp and into their
codec directories.

1 files changed, 181 insertions, 0 deletions

diff --git a/src/bigint/bigint.h b/src/bigint/bigint.h
new file mode 100644
index 000000000..b1286551e
--- /dev/null
+++ b/src/bigint/bigint.h
@@ -0,0 +1,181 @@
+/*************************************************
+* BigInt Header File                             *
+* (C) 1999-2008 Jack Lloyd                       *
+*************************************************/
+
+#ifndef BOTAN_BIGINT_H__
+#define BOTAN_BIGINT_H__
+
+#include <botan/rng.h>
+#include <botan/secmem.h>
+#include <botan/mp_types.h>
+#include <iosfwd>
+
+namespace Botan {
+
+/*************************************************
+* BigInt                                         *
+*************************************************/
+class BOTAN_DLL BigInt
+   {
+   public:
+      enum Base { Octal = 8, Decimal = 10, Hexadecimal = 16, Binary = 256 };
+      enum Sign { Negative = 0, Positive = 1 };
+      enum NumberType { Power2 };
+
+      struct DivideByZero : public Exception
+         { DivideByZero() : Exception("BigInt divide by zero") {} };
+
+      BigInt& operator+=(const BigInt&);
+      BigInt& operator-=(const BigInt&);
+
+      BigInt& operator*=(const BigInt&);
+      BigInt& operator/=(const BigInt&);
+      BigInt& operator%=(const BigInt&);
+      word    operator%=(word);
+      BigInt& operator<<=(u32bit);
+      BigInt& operator>>=(u32bit);
+
+      BigInt& operator++() { return (*this += 1); }
+      BigInt& operator--() { return (*this -= 1); }
+      BigInt  operator++(int) { BigInt x = (*this); ++(*this); return x; }
+      BigInt  operator--(int) { BigInt x = (*this); --(*this); return x; }
+
+      BigInt operator-() const;
+      bool operator !() const { return (!is_nonzero()); }
+
+      s32bit cmp(const BigInt&, bool = true) const;
+      bool is_even() const { return (get_bit(0) == 0); }
+      bool is_odd()  const { return (get_bit(0) == 1); }
+
+      bool is_zero() const
+         {
+         const u32bit sw = sig_words();
+
+         for(u32bit i = 0; i != sw; ++i)
+            if(reg[i])
+               return false;
+         return true;
+         }
+
+      bool is_nonzero() const { return (!is_zero()); }
+
+      void set_bit(u32bit);
+      void clear_bit(u32bit);
+      void mask_bits(u32bit);
+
+      bool get_bit(u32bit) const;
+      u32bit get_substring(u32bit, u32bit) const;
+      byte byte_at(u32bit) const;
+
+      // same as operator[], remove this
+      word word_at(u32bit n) const
+         { return ((n < size()) ? get_reg()[n] : 0); }
+
+      u32bit to_u32bit() const;
+
+      bool is_negative() const { return (sign() == Negative); }
+      bool is_positive() const { return (sign() == Positive); }
+      Sign sign() const { return (signedness); }
+      Sign reverse_sign() const;
+      void flip_sign();
+      void set_sign(Sign);
+      BigInt abs() const;
+
+      u32bit size() const { return get_reg().size(); }
+
+      u32bit sig_words() const
+         {
+         const word* x = reg.begin();
+         u32bit sig = reg.size();
+
+         while(sig && (x[sig-1] == 0))
+            sig--;
+         return sig;
+         }
+
+      u32bit bytes() const;
+      u32bit bits() const;
+
+      const word* data() const { return reg.begin(); }
+      SecureVector<word>& get_reg() { return reg; }
+      const SecureVector<word>& get_reg() const { return reg; }
+
+      void grow_reg(u32bit);
+      void grow_to(u32bit);
+
+      word& operator[](u32bit i) { return reg[i]; }
+      word operator[](u32bit i) const { return reg[i]; }
+      void clear() { get_reg().clear(); }
+
+      void randomize(RandomNumberGenerator& rng, u32bit n);
+
+      void binary_encode(byte[]) const;
+      void binary_decode(const byte[], u32bit);
+      void binary_decode(const MemoryRegion<byte>&);
+      u32bit encoded_size(Base = Binary) const;
+
+      static SecureVector<byte> encode(const BigInt&, Base = Binary);
+      static void encode(byte[], const BigInt&, Base = Binary);
+      static BigInt decode(const byte[], u32bit, Base = Binary);
+      static BigInt decode(const MemoryRegion<byte>&, Base = Binary);
+      static SecureVector<byte> encode_1363(const BigInt&, u32bit);
+
+      void swap(BigInt&);
+
+      BigInt() { signedness = Positive; }
+      BigInt(u64bit);
+      BigInt(const BigInt&);
+      BigInt(const std::string&);
+      BigInt(const byte[], u32bit, Base = Binary);
+      BigInt(RandomNumberGenerator& rng, u32bit bits);
+      BigInt(Sign, u32bit);
+      BigInt(NumberType, u32bit);
+   private:
+      SecureVector<word> reg;
+      Sign signedness;
+   };
+
+/*************************************************
+* Arithmetic Operators                           *
+*************************************************/
+BigInt BOTAN_DLL operator+(const BigInt&, const BigInt&);
+BigInt BOTAN_DLL operator-(const BigInt&, const BigInt&);
+BigInt BOTAN_DLL operator*(const BigInt&, const BigInt&);
+BigInt BOTAN_DLL operator/(const BigInt&, const BigInt&);
+BigInt BOTAN_DLL operator%(const BigInt&, const BigInt&);
+word   BOTAN_DLL operator%(const BigInt&, word);
+BigInt BOTAN_DLL operator<<(const BigInt&, u32bit);
+BigInt BOTAN_DLL operator>>(const BigInt&, u32bit);
+
+/*************************************************
+* Comparison Operators                           *
+*************************************************/
+inline bool operator==(const BigInt& a, const BigInt& b)
+   { return (a.cmp(b) == 0); }
+inline bool operator!=(const BigInt& a, const BigInt& b)
+   { return (a.cmp(b) != 0); }
+inline bool operator<=(const BigInt& a, const BigInt& b)
+   { return (a.cmp(b) <= 0); }
+inline bool operator>=(const BigInt& a, const BigInt& b)
+   { return (a.cmp(b) >= 0); }
+inline bool operator<(const BigInt& a, const BigInt& b)
+   { return (a.cmp(b) < 0); }
+inline bool operator>(const BigInt& a, const BigInt& b)
+   { return (a.cmp(b) > 0); }
+
+/*************************************************
+* I/O Operators                                  *
+*************************************************/
+BOTAN_DLL std::ostream& operator<<(std::ostream&, const BigInt&);
+BOTAN_DLL std::istream& operator>>(std::istream&, BigInt&);
+
+}
+
+namespace std {
+
+inline void swap(Botan::BigInt& a, Botan::BigInt& b) { a.swap(b); }
+
+}
+
+#endif