US Patent 8468609 Authenticating use of a dispersed storage network

At least one dispersed storage (DS) processing unit (14), at least one dispersed storage managing unit (18), and at least one dispersed storage unit (44) communicate with each other over a network (20) to authenticate and process a user data transaction within dispersed memory in a dispersed storage network. In a data operation, the DS processing unit (14) first received the request. The unit (14) uses stored security information (80 and 84) to validate that the user requesting the user transaction is a valid user. The unit (18) processes the user transaction to further authenticate that the user is valid and the user transaction requested by the user is proper. Finally, the unit (44) again received user transaction information and performs another authentication to ensure that the distributed network data slices can be properly processed by this user and this user transaction.