CRYPTOGRAPHIC EQUIPMENT IMPLEMENTING RED/BLACK COMMUNICATION MODES

摘要

The invention relates to cryptographic equipment which includes an input interface, a red module, a cryptographic module, a black module, and an output module. The cryptographic module comprises a cryptographic unit, which interacts with the red module and with the black module, and a management device, which interacts with the input interface and with either the red module or the black module but not with both simultaneously. The cryptographic unit and the management device are physically and logically separate from one another and independent, and have identical protection means capable of protecting the integrity of the management device so as to detect any attempt at tampering.