FlexiHash对于电池认证 FlexiHash For Battery Authentication
The ISL6296A is a highly cost-effective fixed-secret hash engine based on ’s FlexiHash technology. The device’s authentication is achieved through a challenge response scheme, which is customized for low-cost applications where cloning via eavesdropping without knowledge of the device’s secret code is not economically viable. When used for its intended applications, the ISL6296A offers the same level of effectiveness as other significantly more expensive high maintenance monetary grade hash algorithm and authentication schemes.
Features
• Challenge-response based authentication scheme using 32-Bit challenge code and 8-Bit authentication code.
• Fast and flexible authentication process. Multi-pass authentication can be used to achieve the highest security level if necessary.
• 16x8 OTP ROM stores up to three sets of 32-Bit host selectable secrets with additional programmable memory for storage of up to 48-bits of ID code and/or pack information.
• FlexiHash engine uses two sets of 32-Bit secrets for authentication code generation.
• Non-unique mapping of the secret key to an 8-Bit authentication code maximizes hacking difficulty due to need for exhaustive key search superior to SHA-1.
• Supports 1-cell Li-ion/Li-Poly and 3-cell series NiMH battery packs 2.6V ~ 4.8V operation, or powered by the XSD bus.
• XSD single-wire host bus interface communicates with all 8250-compatible UART’s or a single GPIO. Supports CRC on read data and transfer bit-rate up to 23kbps.
• True “Zero Power” Sleep mode - automatically entered after a bus inactivity time-out period.
• 5 Ld SOT-23 and 8 Ld TDFN 2mmx3mm packages
• -25°C to +85°C operating temperature range
• Pb-free RoHS compliant
Applications
• Battery Pack Authentication
• Printer Cartridges
• Add-on Accessories
• Other Non-Monetary Authentication Applications