公开密码匙基础建设

• For instance , some standards groups have been focusing on general xml instances and documents ( xml signature and xml encryption ) , while others have been working in the area of public key infrastructure ( pki ) , notably the w3c s xkms and verisign s xml trust assertion services specification ( xtass )
  例如，有些制定标准的团体注重一般的xml应用和文件（ xmlsignature及xmlencryption ） ，而另一些团体则努力在公开密码匙基础建设（ pki ）方面研究，即w3c的xkms和verisign的xmltrustassertionservicesspecification （ xtass ） 。