uSSL TLS SDK by Cypherbridge Systems is a portable ANSI C software stack that implements standards-based SSL and TLS protocols, including versions 1.3, 1.2, 1.1, and 1.0. It provides PKI X.509 certificate processing, cryptographic operations, hashing functions, and network protocol support for embedded applications and vertical markets. The SDK is designed for embedded systems and devices, employing interoperable, scalable features to securely authenticate and cryptographically secure end-to-end system network connections. It can be integrated with existing or new applications and tailored for an optimal memory footprint, balancing security, memory usage, and performance for small to medium-sized applications. The SDK includes self-test support for integration, testing, and compatibility verification, as well as an integrated Credentials Manager for handling authentication and security credentials.