Method of ensuring safe communication in untrustworthy networks and device for making the same

摘要

Equipment for this method is formed by at least one client computer, further public insecure communication channel for transmission of encrypted data, secure communication channel for transferring the encryption key, further šifrujícím between private and untrusted network, the connection manager for a secure network and an encryption device between the public network and the client device. Method of secure data transmission in untrusted networks is done so that the data to be transmitted is encrypted cipher sufficiently secure to be in an encrypted state could send unsecured broadband communication channel and there is no danger of deciphering the capture of an unauthorized person. Key, which are sent encrypted, it is disposable, generated for each connection randomly and individually, its length is considerably smaller than the length of the transmitted data is sent to the recipient via a slow safe and trusted network that could be key during transmission or use compromised . The validity of each key will expire after the end of each connection. The recipient uses the key that he received through a trusted network to decrypt data received from untrusted networks. In this manner will also verify the authenticity of received data and is thus also avoided the possibility of targeted forgery or manipulation of data during their transmission.