The document discusses a data dissemination protocol called seDrip for wireless sensor networks. seDrip allows multiple authorized network users to simultaneously distribute data items directly to sensor nodes, without relying on a central sink node. It implements authentication using digital signatures to provide security and prevent unauthorized access. The protocol is analyzed and shown to satisfy security requirements like authenticity, integrity, and resistance to denial-of-service attacks. RSA encryption is used to encode data for confidentiality.