| 发表于：2007-04-25 11:56:51 楼主 |
我参考书上代码，用c#写了一个数字签名的程序，现在出现错误，但是不知道应该怎么修改，请大家帮忙。源代码如下：
xmldocument document=new xmldocument（);
document.load（server.mappath（ "card.xml "));
signedxml signedxml=new signedxml（);
rsa rsakey=rsa.create（);
signedxml.signingkey=rsakey;
dataobject dataobject=new dataobject（);
dataobject.data=document.childnodes;
dataobject.id= "signedobject ";
signedxml.addobject（dataobject);
reference reference=new reference（);
reference.uri= "#signedobject ";
signedxml.addreference（reference);
keyinfo keyinfo=new keyinfo（);
keyinfo.addclause（new rsakeyvalue（rsakey));
signedxml.keyinfo=keyinfo;
signedxml.computesignature（);
signedxml.signature.id= "order ";
xmlelement xmlsignature=signedxml.getxml（);
document=new xmldocument（);
xmlnode xmlnode=document.importnode（xmlsignature,true);
document.appendchild（xmlnode);
document.save（server.mappath（ "card.xml "));
提示错误出现在signedxml.computesignature（)。
提示错误：the specified node cannot be inserted as the valid child of this node, because the specified node is the wrong type.
不知道我的类型怎么出错了，应该怎么修改呢？
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