我正在尝试更新执行数字签名的功能,我想从SHA1切换为SHA256
这是当前功能:
private byte[] zSignData(Byte[] msg, X509Certificate2 signerCert)
{
ContentInfo contentInfo = new ContentInfo(msg);
SignedCms signedCms = new SignedCms(contentInfo, false);
CmsSigner cmsSigner = new CmsSigner(signerCert);
cmsSigner.DigestAlgorithm = new Oid("1.3.14.3.2.26"); //SHA1
signedCms.ComputeSignature(cmsSigner, false);
return signedCms.Encode();
}
这个功能很好用
为了更新为SHA256,我更改了
cmsSigner.DigestAlgorithm = new Oid("1.3.14.3.2.26"); //SHA1
与
cmsSigner.DigestAlgorithm = new Oid("2.16.840.1.101.3.4.2.1");//SHA256
但是在
signedCms.ComputeSignature(cmsSigner, false);
我得到以下异常
System.Security.Cryptography.CryptographicException
消息=存在内部错误。
有人有建议吗?
我使用VS2010 Professional 64和Win7 Professional 64
最佳答案
我相信CAPIBase中有一个拼写错误:
internal const string szOID_OIWSEC_SHA256 = "2.16.840.1.101.3.4.1";
internal const string szOID_OIWSEC_SHA384 = "2.16.840.1.101.3.4.2";
internal const string szOID_OIWSEC_SHA512 = "2.16.840.1.101.3.4.3";
应该:
internal const string szOID_OIWSEC_SHA256 = "2.16.840.1.101.3.4.2.1";
internal const string szOID_OIWSEC_SHA384 = "2.16.840.1.101.3.4.2.2";
internal const string szOID_OIWSEC_SHA512 = "2.16.840.1.101.3.4.2.3";
关于此的更多讨论在这里:
http://social.msdn.microsoft.com/Forums/en-US/netfxbcl/thread/217776fa-5dcd-41a6-a800-b401509fbbf0/#fbae9811-a5a2-418f-b049-dcbabf18431a
http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/0cc90bdd-35f9-4a7d-8025-89f7ea9f9704/#deb21fba-1171-4eee-81ea-6de294abbeeb
blogs.msdn.com/b/alejacma/archive/2012/08/02/10018922.aspx
Todd,是什么让您相信OID 2.16.840.1.101.3.4.2.1不是SHA256?那么正确的OID是什么?
关于c# - 从SHA1到SHA256的数字标牌,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/5704906/