嵌入式Linux的IPSecVPN实现

An Online Software Licensing System Security Model

Linux下基于IPsec~VPN，由于采用基于IP隧道加密技术，可以最大限度保证通信的可靠安全。在嵌入式系统中，传输数据的加密和解密也为处理器带来较大的负担。利用嵌入式处理器中的加解密硬件协处理器，可以有效降低CPU的利用率，为快速安全传输数据提供了保证。

IPSec VPN which based Linux operate system, because the use of encryption technology based on IP tunneling, you can ensure maximum safetyand reliable communications. In embedded systems, transmissionof data encryption and decryption processor also brings a greater burden. The use of encryption and decryption in the embedded processor hardware co-processor, can reduce the CPU utilization-for fast, secure transmission of data to provide a guarantee.