There is no BackDoor actually. According to post on TOI RIM officials have said that there is NO backdoor key which RIM holds to give clear see through of data passing through BlackBerry services. BlackBerry Security Architecture is such that the users alone create their own key which I guess should be the reason of the BlackBerry PIN, a unique key for every blackberry phone user.
The security architecture for enterprise customers is based on a symmetric key system whereby customers create their own key and only the customer ever possesses a copy of their encryption key.
“RIM does not possess a master key nor does any back door exists in the system that would allow RIM or any third party to gain an unauthorised access to the key or corporate data,” the company said.
It, therefore, would be unable to accommodate any request for a copy of a customer’s encryption key since at no time does RIM, or any wireless network operator, ever possess a copy of the key.
There are around one million users in India and we will have to and see how this get resolved.
Thanks Abhishek Kant