C# 使用RSA-SHA256签名方法对Xml文档签名问题
我正在使用以下方法签署Xml文档:C# 使用RSA-SHA256签名方法对Xml文档签名问题,c#,signedxml,C#,Signedxml,我正在使用以下方法签署Xml文档: public static XmlDocument SignDocument(XmlDocument doc) { string signatureCanonicalizationMethod = "http://www.w3.org/2001/10/xml-exc-c14n#"; string signatureMethod = @"http://www.w3.org/2001/04/xmldsig-more#rsa-
public static XmlDocument SignDocument(XmlDocument doc)
{
string signatureCanonicalizationMethod = "http://www.w3.org/2001/10/xml-exc-c14n#";
string signatureMethod = @"http://www.w3.org/2001/04/xmldsig-more#rsa-sha256";
string digestMethod = @"http://www.w3.org/2001/04/xmlenc#sha256";
string signatureReferenceURI = "#_73e63a41-156d-4fda-a26c-8d79dcade713";
CryptoConfig.AddAlgorithm(typeof(RSAPKCS1SHA256SignatureDescription), signatureMethod);
var signingCertificate = GetCertificate();
SignedXml signer = new SignedXml(doc);
signer.SigningKey = signingCertificate.PrivateKey;
signer.KeyInfo = new KeyInfo();
signer.KeyInfo.AddClause(new KeyInfoX509Data(signingCertificate));
signer.SignedInfo.CanonicalizationMethod = signatureCanonicalizationMethod;
signer.SignedInfo.SignatureMethod = signatureMethod;
XmlDsigEnvelopedSignatureTransform envelopeTransform = new XmlDsigEnvelopedSignatureTransform();
XmlDsigExcC14NTransform cn14Transform = new XmlDsigExcC14NTransform();
Reference signatureReference = new Reference();
signatureReference.Uri = signatureReferenceURI;
signatureReference.AddTransform(envelopeTransform);
signatureReference.AddTransform(cn14Transform);
signatureReference.DigestMethod = digestMethod;
signer.AddReference(signatureReference);
signer.ComputeSignature();
XmlElement signatureElement = signer.GetXml();
doc.DocumentElement.AppendChild(signer.GetXml());
return doc;
}
private static X509Certificate2 GetCertificate()
{
X509Store store = new X509Store(StoreName.My, StoreLocation.LocalMachine);
store.Open(OpenFlags.ReadOnly);
X509Certificate2 card = null;
foreach (X509Certificate2 cert in store.Certificates)
{
if (!cert.HasPrivateKey) continue;
if (cert.Thumbprint.Equals("a_certain_thumb_print", StringComparison.OrdinalIgnoreCase))
{
card = cert;
break;
}
}
store.Close();
return card;
}
尝试使用指定的错误消息无效算法计算签名时,引发System.Security.Cryptography.CryptographyException类型的异常。有什么想法吗
计算机:Windows Server 2008 R2
.Net Framework:4.0
IDE:Visual Studio 2010。非常感谢您的博客。它实际上解决了我的问题。 顺便说一下,如果证书是从文件加载的,它应该是可导出的:
X509Certificate2 x509Key=新的X509Certificate2(“xxxxx.pfx”,“123”,X509keystrageFlags.Exportable) 来自@minhj的回复提到了一些博客,但没有链接 但是,添加并注册所提到的类解决了这个问题。似乎每个应用程序域只能注册一次 字符串signatureMethod=@“”
根据我解决了这个问题(感谢Phillip),如下所示:/*在var signingCertificate=GetCertificate()之后添加以下代码行;*/CspParameters cspParams=新的CspParameters(24);csparams.KeyContainerName=“XML\u DISG\u RSA\u KEY”;RSACryptoServiceProvider key=新的RSACryptoServiceProvider(csparams);key.FromXmlString(signingCertificate.PrivateKey.ToXmlString(true))/*将新密钥分配给签名者的SigningKey*/metadataSigner.SigningKey=key;thx UncleZen修复了它,但是cspParams.KeyContainerName=“XML_DISG_RSA_KEY”不是必需的,没有它也可以工作。这不会回答不回答问题的问题,但在实现UncleZen的解决方案后,如果密钥未标记为可导出,则会出现错误“密钥在指定状态下无效”。