Cypherbridge Systems' uSSL SDK is a portable ANSI C software stack implementing standards-based SSL and TLS protocols, including versions 1.3, 1.2, 1.1, and 1.0. It provides data privacy, authentication, and integrity for network communications in IoT and embedded devices. The SDK includes support for PKI X.509 certificates, cryptographic functions, hashing, and network protocols. Designed for embedded systems and devices, it offers interoperable and scalable features to securely authenticate and cryptographically secure end-to-end system network connections. The SDK can be integrated with existing or new applications, including embedded HTTPS webservers, and tailored for optimal memory footprint. It includes self-test support for integration, testing, and compatibility verification. The uSSL SDK also provides an integrated Credentials Manager and supports cloud services using TLS port 8883, offering a configurable security model and broker authentication with 2-way X509 TLS client authentication.