What is SSL?
SSL (Secure Sockets Layer) is a protocol that helps provide secure Internet communications for services like web browsing, e-mail, instant messaging, and other data transfers. When you search over SSL, your search queries and search traffic are encrypted so they can’t be read by any intermediary party such as employers and internet service providers (ISPs).
Want to see the secure SSL page visit https://google.com
However Google will maintain search data as usual to provide better search results.
When you enter to a SSL secured page you can see the URL as https:// instead of http://. This SSL function is already used in Gmail and all Google apps.Encryption using SSL is a bit of process added to normal hence there will be a small delay in fetching the results.
This SSL service from Google is now in Beta because only text searched can be encrypted while image search and map searches are not encrypted hence you wont see maps and images links in https://google.com