This video illustrates the use of cryptography in widely-used embedded systems/IoT device software applications such as secure connectivity with SSL/TLS, provisioning a device with security credentials, and performing a secure remote software update. It concludes with an overview of the different digital certificates required on an embedded systems/IoT device. It walks through a SSL/TLS handshake and shows the use of asymmetric and symmetric encryption at different stages of the handshake. It demonstrates the use of digital signatures in a secure remote/OTA download and use of device identity and CSRs in a run-time provisioning implementation.