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Qwyit Stream Cipher Encryption Engine

QChip Cryptographic IP Core for FPGA

Real-time stream encryption for FPGA—without block-cipher baggage.

QChip is a synthesizable FPGA IP core delivering continuous encryption and decryption for streaming data using the Qwyit Authentication and Data Security protocol (PDAF_SEC). Designed as a replacement for traditional block ciphers, it provides high-performance, quantum-safe stream protection with minimal resource usage and simple AXI-based integration.  

Request Evaluation License

Included

● QChip FPGA IP Core (synthesizable RTL)

● AXI4-Stream data interfaces (Master and Slave)

● AXI4-Lite control interface

● Qwyit stream cipher and key exchange logic

● Register map and user documentation

● License-controlled core (evaluation and production supported)

Key Features

● Real-time stream encryption and decryption

● Implements the Qwyit PDAF_SEC cryptographic protocol

● Continuous key evolution with no repeating keystream

● No block-size or message-length restrictions

● Quantum-safe cryptographic design

● Replacement for AES stream-mode implementations

● Fully parameterized data width and FIFO depth

● Designed for low latency and high throughput

● Compatible with most modern FPGA families

Typical Applications

● Secure FPGA-based communications

● Defense and aerospace systems

● Industrial control and automation

● Secure sensor and telemetry pipelines

● Embedded and edge computing platforms

● Replacement for AES in stream cipher modes

Technical Specifications

  

Interfaces

● AXI4-Stream Slave (data input)

● AXI4-Stream Master (data output)

● AXI4-Lite Slave (configuration and status)

Standards Compliance

AMBA AXI4-Stream and AXI4-Lite interfaces compliant with the ARM AMBA AXI4 specification.

Configurable Parameters

● Data width: 8, 16, 32, 64, 128, or 256 bits

● FIFO depth: 8 to 1024 entries

FPGA Resource Utilization (Example Configuration)

● Device: XC7K160T-2

● Slices: 8,834

● LUTs: 8,909

● Slice Registers: 1,568

● Maximum Frequency (Fmax): approximately 200 MHz

● Performance and utilization scale with selected data width and FIFO configuration

License and Delivery

QChip is licensed per project or deployment. Evaluation licenses are available and include time-limited operation for integration and testing. Production licenses remove runtime limits and include full documentation. 

Learn More

800.961.4750 | 509 Old Great Neck Road Suite 105 Virginia Beach, VA 23454

571.368.6966 | 14 Pidgeon Hill Drive Suite 110 Sterling, VA 20165