4 US patent applications published on 04 April 2013 and assigned to Amazon
| 1 | 20130086663 | KEY DERIVATION TECHNIQUES |
| 2 | 20130086662 | PARAMETER BASED KEY DERIVATION |
| 3 | 20130086661 | TECHNIQUES FOR CLIENT CONTRUCTED SESSIONS |
| 4 | 20130085880 | IMPLEMENTATION OF SECURE COMMUNICATIONS IN A SUPPORT SYSTEM |
