ST25DV vs NextCAD

The ST25DV-I2C CryptoDemo iOS application shows how to establish a secure transfer channel over NFC, between an STM32 microcontroller and an iOS smartphone using coreNFC framework. It uses the fast transfer mode (FTM) feature of the ST25DV-I2C NFC Tag. An ST25DV-I2C-DISCO board is required to run the demonstration. This demonstration establishes a secure transfer channel by using cryptography to perform mutual authentication and to encrypt the communications over NFC. This secure transfer channel is used during the demonstration to securely send and retrieve data, perform the device settings, and upload new firmware. Only the granted user may communicate with the STM32 microcontroller to perform these operations. All the communications are encrypted between the microcontroller and the iOS phone in both ways, so that the user can configure the product or retrieve data securely. FEATURES : - Use the new NFC core feature of iOS 13, supporting the read an write of NFC for ISO15693 tag protocol. - Encryption of all NFC bidirectional communications between an iOS Phone and an STM32 microcontroller Fast communications over NFC, using ST25DV fast transfer mode - AES and ECC cryptography - Mutual authentication between the iOS phone and the STM32 microcontroller - Establishment of a unique AES session key - Encryption can be used to retrieve data, set device settings or update the firmware securely

NextCAD is a native DXF viewer for iPhone and iPad, built on a Rust core for checking mechanical, architectural and apparel drawings wherever you are. • Accurate: distance, running length, area and angle use analytic geometry — arcs are never approximated by polylines. Snap to endpoints, midpoints and centers. • Complete: LWPOLYLINE, SPLINE, HATCH, DIMENSION, nested blocks, Paper Space layouts, Binary DXF, GBK/UTF-8, R12–2018 • Layers: toggle, isolate, and view by layer color • Markup: text, arrows and revision clouds, saved separately — your original drawing is never modified • Export: PDF (fit to page or true 1:1 tiled pages), PNG, SVG • Patterns: open parametric .dpat garment patterns and regenerate them live with sliders • Includes a sample drawing so you can try it right away Unsupported entities are reported explicitly, never silently dropped. NextCAD works offline and collects no data — your drawings stay on your device, in Files, or in iCloud.