Cryptographic Micro-Tokens

Technical Explanation

Ambient IoT tags harvest micro-watts of power and lack the computational capacity to perform complex asymmetric cryptography. Cryptographic Micro-Tokens utilize ultra-compact hash-based Message Authentication Codes (HMAC) with pre-shared one-time pads. Squeezed into 32 to 64 bits, these single-use tokens allow battery-free retail and logistics tags to verify that a read/write command originated from an authorized base station without draining harvested energy reserves.

Key Functions

• Ultra-compact 32-to-64 bit single-use cryptographic authorization tokens
• Feasible for battery-free Ambient IoT tags operating on micro-watts of harvested energy
• Preventing unauthorized reading, cloning, or tampering with retail and logistics sensor tags
• One-time cryptographic rolling tokens immune to packet replay and snooping attacks
• Native physical layer integration into 6G ambient discovery and interrogation frames