Tor uses .onion-URLs to identify hidden services. They are 80 bit long number which are usually represented in base32-encoded format. They look like this:


This .onion-URL acts not only as a handle, it offers also service authentication, i.e. only one specific hidden service is associated to this identifier and no one can forge or spoof it (without reasonable effort). That's because the 80 bit number actually is a part of the hash of the public key of the hidden service and the public key is strongly related to its private key.

OnionCat is able to translate those .onion-URLs to IPv6 addresses.

Last modified 12 years ago Last modified on Jan 14, 2009, 8:28:33 PM