Patent ID: 8984275
Filing Date: 2015-03-17
Classification: H04L

Abstract:
1. A virtual air gap system comprising: an internal security component; an external security component; the internal security component and the external security component are positioned between an internal network and an external network; a shared memory that is directly connected to the internal security component; wherein the shared memory is also directly connected to the external security component; a message transfer mechanism positioned between the internal security component and the external security component and the shared memory; wherein an incoming or outgoing message from the external or internal security component is encrypted, digitally signed and written into the shared memory; wherein the incoming message in the shared memory is decrypted, digital signature is checked and verified, and an outgoing message is produced wherein the outgoinq message is substantially similar to the incoming message; the system further comprises: an outgoing request message; an incoming reply message; an incoming request message; and an outgoing reply message; wherein the outgoinq request messaqe, the incoming reply message, the incoming request message and the outgoing reply messaqe are handled by the corresponding external security component or the corresponding internal security component; wherein an incoming or outgoing message from the external or internal security component is encrypted, digitally signed and written in a manner not compatible with standard well-known file systems such that even if an intruder can access to the shared memory, the intruder cannot decrypt the incoming or outdoing message in the shared memory.