RICHMOND, Mass. -- May 10, 2018 -- Rivetz Corp. and Telefónica today announced an agreement to collaborate on the development of advanced mobile security protocols for blockchain transactions and messaging. The solution expects to leverage dual encryption, supporting both the Trusted Execution Environment embedded by multiple device manufacturers and the advanced encryption on SIMs deployed RICHMOND, Mass. -- May 10, 2018 -- Rivetz Corp. and Telefónica today announced an agreement to collaborate on the development of advanced mobile security protocols for blockchain transactions and messaging. The solution expects to leverage dual encryption, supporting both the Trusted Execution Environment embedded by multiple device manufacturers and the advanced encryption on SIMs deployed