Method for securing a two-way communications channel and device for implementing said method

摘要

The present invention relates to a method for securing a two-way communications channel between at least a network N1 and a network N2 with a lower level of security than N1, and a device to implement the method. The method comprises at least the following steps: defining one or more types of data authorized to be transmitted from N1 to N2; routing a datum to an encryption/decryption module or to a filtering module, according to the datum type. The invention notably allows communications to be established between a plurality of networks with different levels of security.