On Sun, Oct 5, 2014 at 9:25 AM, John Rose via AGI <[email protected]> wrote: > For this "AGI" do we really care who you are, unless trying to validate your > credit card for purchases, verses what you know?
The problem with a globally distributed AGI is that you cannot trust peers to give you reliable and correct information. The network is vulnerable to spam. To make it work, you need a secure means of identifying peers as the same source of earlier messages that you found to be reliable and useful. This will result in reputation networks, like where you trust eBay or Amazon when they vouch for the people that rated some other small seller. The protocol I described requires each pair of peers to share a secret key and to sign each message with something like SHA-256(key + message). The receiver computes the signature and discards the message if it does not match. The first time two peers communicate, they initially do not trust each other. They agree on a key by some secure means like Diffie-Hellman key exchange, and then slowly establish trust. This trust if lost if one party loses the key or if it is leaked allowing someone else to impersonate the peers. Of course we already have reputation networks. When you type "google.com" into your browser, you trust the root DNS servers to direct you to the real website and not a phishing site, and you trust your ISP to direct your DNS request to legitimate servers. If you do something that requires their trust, then they ask for your password over an HTTPS connection where a second trusted site (a CA server) vouches for their public keys. This is necessary because DNS packets are not signed and therefore subject to spoofing. > But a machine peer could query Google so essentially a large system like this > could effectively take a snapshot of Google's index... Google may at some > point force people to prove human identity before allowing queries as queries > might be as import as their results. I am sure that if you tried to copy Google's index with millions of queries, they would put a quick stop to that. -- -- Matt Mahoney, [email protected] ------------------------------------------- AGI Archives: https://www.listbox.com/member/archive/303/=now RSS Feed: https://www.listbox.com/member/archive/rss/303/21088071-f452e424 Modify Your Subscription: https://www.listbox.com/member/?member_id=21088071&id_secret=21088071-58d57657 Powered by Listbox: http://www.listbox.com
