DSP application in e-commerce security

This is a case study on using DSP board to construct an encryption/decryption module embedded in a E-Commerce web server. The idea of using DSP is to push beyond the key length limits of encryption/decryption algorithms and computational power in software environment while avoiding the heavy investment in dedicated hardware encryptor/encryptor. The low cost, high computational power, high flexibility of DSP and the ubiquitous availability of PC PCI (peripheral component interconnect) slot for DSP can provide any web browser or web server an excellent cost-effective option to improve the security level of Internet applications. The paper provides a step-by-step procedure and reveals every detail of a successful implementation of DSP RSA encryptor/decryptor for a Ecommerce web server by using the latest TMS320C6000 TM Evaluation Module (EVM) DSP hardware. A strong prime concept and Garner algorithm are introduced to generate more secure keys and compute encryption/decryption more efficiently than that of recent publications. Experiments show that the performance of using DSP hardware encryption can be 300 times faster than that in software environment. Building a DSP application embedded in a E-Commerce server needs to consider more issues than doing a pure open DSP application. However, since this conference falls exclusively in DSP field, other irrelevant DSP issues like RSA Key Database, server design etc. are not discussed here.