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)));
}