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Implementation of License File Scheme Through Modified Digital Signature Scheme Based on PKI

Abstract

基于软件的保护方式主要有注册码和许可证文件,文章介绍了将单向散列函数同公开密钥相结合实现数字签名的技术,提出了一种软件许可证生成、验证的许可系统,并基于gnu开源库lIbgCryPT为电信设备实现许可证系统。与传统技术相比,该系统具有简单易用、安全可靠的特点。There are two main methods,i.e.License Key and License File in software copyrights protection area based on soft mode.This paper constructed digital signature adopting public key cryptography technique and Hashing,and then proposed a new license flie generation and validation system,and also gave detailed design and implemention based on Libgcrypt which belongs to GNU.This system is easier and safer to use

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