// utility function
private bool valid_hash(string signaturetype, string signature, HashRepositoryRecord repo_curr)
{
switch (signaturetype)
{
case "SHA1":
{
return(repo_curr.Sig1.ToUpper() == signature);
}
case "MD5":
{
return(repo_curr.Sig2.ToUpper() == signature);
;
}
case "CRC16":
{
return(repo_curr.Sig3.ToUpper() == signature);
;
}
case "CRC32":
{
return(repo_curr.Sig4.ToUpper() == signature);
;
}
case "HMACSHA1":
{
return(repo_curr.Sig5.ToUpper() == signature);
;
}
default:
{
int g = 0;
break;
}
}
return(false);
}
// perform the comparisson between hash results and hash repository
internal Match_result[] compare(HashRepositoryController ctrl_repo)
{
HashResultRecord[] dataresult = repo.getAll();
HashRepositoryRecord[] datarepo = ctrl_repo.Repo.getAll();
if (dataresult == null)
{
MessageBox.Show("Wrong File Format");
return(null);
}
Match_result[] res = new Match_result[dataresult.Length];
for (int i = 0; i < dataresult.Length; i++)
{
HashResultRecord curr_result = dataresult[i];
string cad = curr_result.FileFolderName.Trim(new char[] { ' ', '\"' });
string signaturetype = curr_result.SignatureType.Trim(new char[] { ' ', '\"' });
string signature = curr_result.Signature.Trim(new char[] { ' ', '\"' });
for (int j = 0; j < datarepo.Length; j++)
{
HashRepositoryRecord repo_curr = datarepo[j];
res[i] = Match_result.NO_FILE;
string cad2 = repo_curr.ImageName.Trim(new char[] { ' ', '\"' });
if (cad == cad2)
{
int g = 0;
if (valid_hash(signaturetype, signature, repo_curr))
{
res[i] = Match_result.MATCH;
}
else
{
res[i] = Match_result.NO_MATCH;
}
break;
}
}
}
return(res);
}
