Battery authentication ICs make hacking difficult

Milpitas, Calif. — Intersil Corp. has introduced two advanced battery authentication ICs for cell phones that feature the company's unique FlexiHash+ technology. The ISL9206 and ISL9206A provide very high levels of security using a basic challenge/response scheme based on 32-bit challenge code and 8-bit response code.

FlexiHash+ employs two sets of 32-bit secrets for generating authentication code to offer tens of billions of potential configurations for users. And with a 16 x 8 one-time programmable (OTP) ROM, the devices can store a total of three sets of these 32-bit secrets. Programmable memory adds the ability to store up to 48 bits of ID code and/or pack information. The result is a highly secure and flexible battery/device authentication that makes hacking difficult due to the exhaustive key search that would be needed to break a code, said Intersil.

The ISL9206/06A devices feature an operating voltage range from 2.6 V to 4.8 V and can be powered directly from a one-cell Li-ion/Li-polymer or a three-cell series NiMH battery pack. The devices can also be powered by the XSD bus when the bus pull-up voltage is 3.3 V or higher. They connect to the cell terminals of a battery pack and include an on-chip voltage regulation circuit, POR and a non-crystal-based oscillator for bus timing reference.

Both authentication ICs also include a clone prevention feature offering safety and revenue protection, which is suitable for protection against after-market replacements. As an added feature, the ISL9206 incorporates multi-pass authentication that can be used to maximize security. Both devices are also suitable for a wide variety of printer cartridges.

Pricing: The ISL9206 and ISL9206A devices are priced at $1.40 and $1.73 each, respectively, in quantities of 1,000.
Availability: The ISL9206 and ISL9206A are available now in 5-lead SOT-23 and 8-lead TDFN packages.
Product information: ISL9206 and

Intersil Corp. ,

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