我有一个函数可以通过以下代码读取签名文件的内容(例如[MYFILE] .xml.p7m):
Dim signedCms As New SignedCms()
signedCms.Decode([MYFILEBYTES])
Dim content As Byte() = signedCms.ContentInfo.Content
不幸的是,我需要在旧的“ Windows Server 2003 R2”系统上运行该程序,但它会生成此异常:
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Security.Cryptography.CryptographicException
Stack:
at System.Security.Cryptography.Pkcs.SignedCms.OpenToDecode(Byte[],
System.Security.Cryptography.Pkcs.ContentInfo, Boolean)
at System.Security.Cryptography.Pkcs.SignedCms.Decode(Byte[])
显示消息“未知密码算法”。
在另一台“ Windows Server 2003 R2”计算机上,它可以正常工作。
我的问题是:应该在“ Windows Server 2003 R2”上安装什么组件才能使signedCms.Decode语句正常工作?