Sax Wap 2050com Exclusive Link

Figure 1 (described textually) depicts the SW‑E stack across three logical layers:

+-----------------------------------------------------------+
|  Application Layer (cXML generators/consumers)            |
|  - Sensor data models (Telemetry, Control, Metadata)      |
|  - Event‑driven handlers (SAX callbacks)                  |
+-----------------------------------------------------------+
|  Protocol Layer                                            |
|  - cXML Encoder/Decoder (binary XML tokenization)        |
|  - bWAP Framer & Deframer (TLV header compression)        |
|  - Session Manager (stateful, half‑duplex, push‑only)      |
+-----------------------------------------------------------+
|  Transport & Security Layer                               |
|  - 5G‑NR / NR‑U / Wi‑Fi 6E PHY                              |
|  - 2050COM Secure Element (ECC‑P‑256, AES‑GCM)            |
|  - Mutual attestation (ECDSA signatures per stanza)       |
+-----------------------------------------------------------+
|  Hardware Platform                                         |
|  - ARM Cortex‑M55 + 1 W RF front‑end                       |
|  - 2050COM SE (TPM‑2.0 compatible)                        |
+-----------------------------------------------------------+

Key architectural decisions:

| Decision | Rationale | |----------|-----------| | cXML (continuous XML) | Eliminates the need for start‑/end‑document delimiters; a single logical XML document spans the entire session, enabling infinite streaming of telemetry. | | Binary XML tokenization | Map each XML token (element, attribute, text) to a 1‑byte opcode; attribute values are encoded as variable‑length integers or compact floating‑point (IEEE‑754‑half). | | bWAP header compression | TLV headers encode session‑id, sequence‑number, security‑flags in ≤ 4 bytes; reduces per‑packet overhead dramatically. | | Hardware‑bound SE | Guarantees that only certified devices can generate valid signatures, preventing rogue implementations from joining the network. | | Half‑duplex push‑only model | Aligns with WAP‑Push semantics, minimizing radio wake‑up cycles on battery‑powered nodes. | sax wap 2050com exclusive

Each bWAP packet comprises:

| Byte(s) | Field | Description | |---------|-------|-------------| | 0 | Version | 0x01 (current). | | 1‑4 | ST | Session Token (big‑endian). | | 5‑6 | Seq | Incremental sequence number (mod 2^16). | | 7 | Flags | b7: End‑of‑Stream, b6: Ack‑Request, b5‑0: Reserved. | | 8‑9 | Payload‑Len | Length of cXML payload (0‑65535). | | 10‑(n) | Payload | Binary‑encoded cXML token stream (see §4.3). | | n‑(n+63) | Auth‑Tag | 64‑bit MAC (AES‑GCM) computed over bytes 0‑(n‑1). | | n+64‑n+95 | Signature | 256‑bit ECDSA signature of (ST‖Seq‖Payload‑Len‖Payload). | Figure 1 (described textually) depicts the SW‑E stack

| Symbol | Meaning | |--------|---------| | cXML | Continuous XML stream (no document delimiters). | | bWAP | Binary WAP carrier (TLV‑encoded). | | SE | Secure Element (hardware crypto module). | | HID | Hardware Identifier (unique 128‑bit value stored in SE). | | ST | Session Token (32‑bit random value generated per connection). | | NS | Namespace ID (8‑bit mapping to XML namespace URIs). | Key architectural decisions: | Decision | Rationale |