Some files in the Old School RuneScape cache contain a hash of their name. The only way to find out the names of these files is to reverse the hashes.
The following hash function is used:
public static int hash(String s) {
byte[] bytes = s.toLowerCase().getBytes(Charset.forName("windows-1252"));
int h = 0;
for (byte b : bytes) {
h = h * 31 + b;
}
return h;
}It is equivalent to s.toLowerCase().hashCode() for ASCII-only inputs