Secure Authentication: CryptoAuthentication
CryptoAuthentication – An extremely cost-effective space-efficient hardware authentication chip designed to securely validate a wide variety of physical or logical elements in virtually all microprocessor based systems:
- Prevent cloning of consumables such as battery packs, filters, test strips, ink cartridges, and much more
- Store an unmodifiable serial number, provide a verification method to identify fraudulent copies
- Validate the integrity & authenticity of firmware, software or other data such as media, including download protection
- Securely exchange session keys for encrypted communications over wireless or wired networks
- High security logical or physical access control, replacement or augmentation to passwords
The CryptoAuthentication family is based on the latest US Government recommended SHA-256 hashing algorithm for superior algorithm security. Every CryptoAuthentication device contains a pre-programmed serial number which is guaranteed to be unique, and storage for a 256 bit secret key.
World Class Algorithm – First authentication chip using SHA-256 hash algorithm. 256 bit key length prevents exhaustive attacks.
Straightforward Command Set – 256 bit challenge generates 256 bit response, plus only 3 other runtime commands. Allows easy use across a wide range of application scenarios.
Secure Personalization – Full support of strong encryption for OEM secrets allows chips to be initialized at third party subcontractors without worry.
Robust Physical Security – Integrated metal shields, voltage and frequency detectors, watchdog timer, and internal memory encryption.
Smallest Package – 3 pin SOT23 fits in the most space sensitive applications.
Single Pin Interface – Simple software interface using any microcontroller requires only a single GPIO. Host and multiple clients share same pin.
| Supply Voltage | IO Voltage | Standby Current | Hash Algorithm | Key Size | Data Rate | Serial Number | Samples Avail. | Demo Kits Avail. |
|---|---|---|---|---|---|---|---|---|
| 2.5V –5.5V | 1.8V – 5.5V | <100 na | SHA-256 | 256 bits | 27K bits/sec | 48 bits | Yes | Yes |
Complete System Solution - (Kit information, libraries, documentation and support)
Rhino+, the AT88SA –ADK1 evaluation kit is for the AT88SA102 CryptoAuthentication device. It includes an ATTINY85 microcontroller
and a convenient USB interface allowing user to understand and experiment with CryptoAuthentication on their personal computer.
The AT88SA-ADK1 gives developers a tool they can directly use to develop applications to protect confidential files, encrypt downloads, perform two factor logon, or prevent software pirating. Complete source code for the AVR is included with the documentation for the kit, along with schematic, gerber files and bill of materials.
Applications
- Portable blood glucose analyzers, etc.
- Login dongle for corporate network access
- Portable media player & GPS system
- Voice authorization for support centers
- Authenticated communications for control networks
- Anti-clone authentication for telecom daughter cards
- Electronic lock & key
- Air, water or furnace filter authentication
