Crypto.h

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#ifndef G3D_Crypto_h
#define G3D_Crypto_h

#include "G3D/platform.h"
#include "G3D/g3dmath.h"
#include "G3D/System.h"
#include <string>

namespace G3D {

class MD5Hash {
private:

 uint8 value[16];

public:

 MD5Hash() {
 for (int i = 0; i < 16; ++i) {
 value[i] = 0;
 }
 }

 explicit MD5Hash(class BinaryInput& b);

 void rotateBytes() {
 uint8 temp = value[0];
 for (int i = 0; i < 15; ++i) {
 value[i] = value[i + 1];
 }
 value[15] = temp;
 }

 void rotateBytes(int n) {
 uint8 temp[16];
 System::memcpy(temp, value, 16);
 for (int i = 0; i < 16; ++i) {
 value[i] = value[(i + n) & 15];
 }
 }

 uint8& operator[](int i) {
 return value[i];
 }

 const uint8& operator[](int i) const {
 return value[i];
 }

 bool operator==(const MD5Hash& other) const {
 bool match = true;
 for (int i = 0; i < 16; ++i) {
 match = match && (other.value[i] == value[i]);
 }
 return match;
 }

 inline bool operator!=(const MD5Hash& other) const {
 return !(*this == other);
 }

 void deserialize(class BinaryInput& b);

 void serialize(class BinaryOutput& b) const;

 static size_t hashCode(const MD5Hash& key) {
 size_t h = 0;
 for (int i = 0; i < 4; ++i) {
 const int x = i * 4;
 h ^= (((uint32)key.value[x + 0]) << 24) |
 (((uint32)key.value[x + 1]) << 16) |
 (((uint32)key.value[x + 2]) << 8) |
 ((uint32)key.value[x + 3]);
 }
 return h;
 }
};


class Crypto {
public:

 static uint32 crc32(const void* bytes, size_t numBytes);

 static MD5Hash md5(const void* bytes, size_t numBytes);

 static int smallPrime(int n);

 static int numSmallPrimes();
};

}

#endif