Implementation of stream cipher service in JCA

JCA (Java Cryptographic Architecture) is designed for the principles of implementation independence, interoperability and extensibility in Java platform. The Cipher structure in JCA is built according to block cipher structure; there are some variations in block cipher and stream cipher. In this paper, we propose that how to provide stream cipher service in JCA, the implementations provide a so-called StreamCipherSpi abstract class for efficiently writing and maintaining any stream cipher algorithm by developers.