常用认证中心 (CA)

摘自《Java加密与解密的技术》

CA三巨头: VeriSign, GeoTrust, Thawte  –都很贵,但会提供一些Trial Version

一个免费组织: www.cacert.org

中国各省均设有CA机构,如北京市数字证书认证中心

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