public bool CreatePublicKey()//hashing private keys//easy to parallel
{
using (SHA256 mySHA = SHA256.Create())
{
byte[] temp;
for (int i = 0; i < 256; i++)
{
temp = Support.SubArray(PrivateKey1, 32 * i, 32); //substract 256bit number(32*8)
temp = mySHA.ComputeHash(temp); //hashing
for (int j = 0; j < 32; j++) //putting into public key variable
{
PublicKey1[32 * i + j] = temp[j];
}
}
for (int i = 0; i < 256; i++)
{
temp = Support.SubArray(PrivateKey2, 32 * i, 32);
temp = mySHA.ComputeHash(temp);
for (int j = 0; j < 32; j++)
{
PublicKey2[32 * i + j] = temp[j];
}
}
}
return(true);
}
private void TransferBytes(int x, int y)
{
byte[] temp;
temp = Support.SubArray(PublicKey2, (8 * x + y) * 32, 32);
for (int j = 0; j < 32; j++)
{
PublicKey1[(8 * x + y) * 32 + j] = temp[j];
}
}
private void TransferBytes(int x, int y)
{
byte[] temp;
//temp = Support.SubArray(PrivateKey2, (32 * x + y) * 32, 32);
temp = Support.SubArray(PrivateKey2, (8 * x + y) * 32, 32);
for (int j = 0; j < 32; j++)
{
//PrivateKey1[32 * x + j] = temp[j];
PrivateKey1[(8 * x + y) * 32 + j] = temp[j];
}
}
public bool VerifySignature(string filePath)
{
using (SHA256 mySHA = SHA256.Create())
{
FileStream file = new FileStream(filePath, FileMode.Open);
Hash = mySHA.ComputeHash(file);
file.Close();
}
using (SHA256 mySHA = SHA256.Create())
{
byte[] temp;
for (int i = 0; i < 256; i++)
{
temp = Support.SubArray(Signature, 32 * i, 32); //substract 256bit number(32*8)
temp = mySHA.ComputeHash(temp); //hashing
for (int j = 0; j < 32; j++) //putting into public key variable
{
Signature[32 * i + j] = temp[j];
}
}
}
//compare ChooseBytes(Hash) and new signature
return(Signature.SequenceEqual(ChooseBytes(Hash)));
}