Patent ID: 7000106
Filing Date: 2006-02-14
Classification: H04K

Abstract:
1. A computer readable medium containing program instructions for configuring a first computer so that a first telephony client on the first computer may securely communicate with a second telephony client on a second computer via a communication path, the computer readable medium comprising: computer code causing the first computer to perform operations comprising inserting a security algorithm within the communication path between the first telephony client and a sound device on the first computer, the security algorithm performing cryptographic operations on audio data transmitted in at least one direction between the first telephony client and the sound device; wherein the first computer has an operating system kernel in the form of an operating system having an I/O supervisor and a sound card driver, and the computer code causes the first computer to perform operations comprising inserting the security algorithm within the first computer's operating system kernel between the I/O supervisor and the sound card driver, the security algorithm being configured as a filter driver.