//These two functions used for calculating hash of Header object
//GetFullHashBytes includes all fields in calculation, while GetSimpleHashBytes considers only two: Nonce and Datahash
//This is done to decouple the key from the object and make it work separately
//Otherwise including in the file data reference to its header would be impossible, leading to the infinite recursion.
public static byte[] GetFullHashBytes(this HeaderModel header)
{
using (System.Security.Cryptography.HashAlgorithm sha256 = System.Security.Cryptography.SHA256.Create())
{
return(sha256.ComputeHash(Encoding.UTF8.GetBytes(header.Serialize())));
}
}
public static byte[] GetSimpleHashBytes(this HeaderModel header)
{
HeaderModel simple = new HeaderModel()
{
Nonce = header.Nonce,
};
using (System.Security.Cryptography.HashAlgorithm sha256 = System.Security.Cryptography.SHA256.Create())
{
return(sha256.ComputeHash(Encoding.UTF8.GetBytes(simple.Serialize())));
}
}