In this Chiptorial, we explain the necessity of establishing trust between host and client devices to create a controlled ecosystem using a Public Key Infrastructure (PKI). In a multitude of applications, from the accessory ecosystem of personal computers (PCs) to the hardware environment of data centers to medical, consumer, and industrial devices, ensuring modules added to your system are legitimate and genuine is extremely important. Follow along in our free Trust Platform Design Suite (TPDS) software hands-on as we demonstrate step-by-step how the ECC204 TrustFLEX secure authentication IC can implement asymmetric authentication to establish trust between devices. Links: Trust Platform Design Suite: https://www.microchip.com/en-us/products/security/trust-platform/tpds ECC204 Product Page: https://www.microchip.com/en-us/product/ecc204 TrustFLEX: https://www.microchip.com/en-us/products/security/trust-platform/trustflex Crypto Auth Development Board: https://www.microchip.com/en-us/development-tool/DM320118 Transport Layer Security (TLS) Blog: https://www.microchip.com/en-us/about/media-center/blog/2022/tls-and-secure-elements More Chiptorials: https://www.youtube.com/watch?v=pi4KcUZmeZA&list=PL9B4edd-p2agqW-GbwJ9ctdGzKDMKx91T&pp=iAQB