Its hard to avoid Google's marketing when the end-to-end implementation proprietary to their RCS app. This is their technical paper which confirms that it is en

Its hard to avoid Google's marketing when the end-to-end implementation proprietary to their RCS app. This is their technical paper which confirms that it is end-to-end encrypted using the Signal protocol. The actual RCS spec has no support for E2E at this point. https://www.gstatic.com/messages/papers/messages_e2ee.pdf https://www.gstatic.com/messages/papers/messages_e2ee.pdf