public static string ToHashString(HashRecord hr)
{
string strHash;
string ret;
strHash = HexConverter.ToHexString(hr.hash, HexConverter.OPTION.Lower);
switch (hr.hformat)
{
case HashFormat.Default:
ret = strHash + " " + hr.file;
break;
case HashFormat.BSD:
switch (hr.htype)
{
case HashType.MD5:
ret = "MD5 (" + hr.file + ") = " + strHash;
break;
case HashType.SHA1:
ret = "SHA1 (" + hr.file + ") = " + strHash;
break;
case HashType.SHA256:
ret = "SHA256 (" + hr.file + ") = " + strHash;
break;
case HashType.SHA384:
ret = "SHA384 (" + hr.file + ") = " + strHash;
break;
case HashType.SHA512:
ret = "SHA512 (" + hr.file + ") = " + strHash;
break;
default:
throw new HashException("invalid hash algorithm");
}
break;
default:
throw new HashException("invalid hash format");
}
return(ret);
}
public static bool HashEquals(HashRecord hash1, HashRecord hash2)
{
if (hash1.hash.Length != hash2.hash.Length)
{
return(false);
}
for (int i = 0; i < hash1.hash.Length; i++)
{
if (hash1.hash [i] != hash2.hash [i])
{
return(false);
}
}
return(true);
}
public static HashRecord GetHashRecordFromString(string line)
{
string file = null;
byte[] hash = null;
HashFormat format = HashFormat.Invalid;
HashType htype = HashType.Invalid;
HashRecord hr = null;
string tmp = null;
format = GetHashFormatFromString(line);
if (format == HashFormat.Default)
{
htype = GetHashTypeFromString(line, format);
if (htype == HashType.Invalid)
{
return(null);
}
tmp = line.Substring(0, line.IndexOf(" "));
file = line.Substring(line.IndexOf(" ") + 2);
}
else if (format == HashFormat.BSD)
{
htype = GetHashTypeFromString(line, format);
if (htype == HashType.Invalid)
{
return(null);
}
tmp = line.Substring(line.LastIndexOf(" = ") + 3);
file = line.Substring(line.IndexOf('(') + 1, line.LastIndexOf(')') - line.IndexOf('(') - 1);
}
else
{
return(null);
}
hash = HexConverter.ToByteArray(tmp);
hr = new HashRecord(file, hash, htype, format);
return(hr);
}
