PKn.内线电键Player Killing.Pkytolacca acinosa Roxb美洲商陆PKE transmitters-transponder应答器PKIX Time Stamp Protocol Draft时间戳服务:符合PKI Based Key Escrow Technology基于PKI的安全密钥托管技术PKI Based Online Payment System基于PKI技术的网上交易系统PKC activation and translocation激活和转位PKDS Public Key Distribution System公钥分配系统PKCS Public Key Cryptograph Standard公开金钥密码技术标准PKCS Public Key Cryptography Standard公钥加密标准