USB HOST APPARATUS, USB DEVICE APPARATUS, USB DEVICE AND AUTHENTICATION METHOD

摘要

PPROBLEM TO BE SOLVED: To enable safe USB cipher transmission. PSOLUTION: This USB device is configured by a USB host apparatus 1 allowing composition of cipher data to a power component outputted from a power terminal of the USB host apparatus 1, and a USB device apparatus 11 allowing separation of the cipher data and the power component from the power component composed with the cipher data. Thereby, the cipher data are composed to the power component, so that analysis of the cipher data becomes impossible even if using a protocol analyzer. Accordingly, the safe cipher transmission becomes possible. PCOPYRIGHT: (C)2007,JPO&INPIT