The Codan company announced the result in a LinkedIn post Thursday, crediting the National Institute of Standards and Technology’s Cryptographic Module Validation Program. Requirements reach module specification and interfaces, authentication, software and firmware security, physical security, self-tests, lifecycle assurance and defenses against other attacks. Which DTC Radios Use the MESH SDR Cryptography Module? The MESH SDR module handles AES-128 and AES-256 encryption. The Sentry Mesh 6161 is a wearable radio weighing about 410 grams, built around DTC’s MeshUltra waveforms and capable of joining networks of up to 144 nodes.