Sign an XML message using Capicom: Error
- From: davisco <davisco@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 24 May 2006 03:14:01 -0700
Dear all,
i am tryng to sign an XML message with CAPICOM (create a digital by using
the method “SHA1 via DSA” and than transforming the digital signature by
base64-encoding in ASCII).
Platform: Windows 2003, Framework 1.1, Capicom Version 2.0.0.3
I performed the following step:
1: regsvr32.exe C:\WINDOWS\system32\capicom.dll
2:TlbImp.exe C:\WINDOWS\system32\capicom.dll /out:Interop.CAPICOM.DLL
3: I created a digital certificate with the makecert utility
makecert -sk myNewKS -r -n "CN=VWSingW" -sky Signature -a sha1 -ss my -sr
localmachine myNew.cer
4:I wrote the following method:
string Sign(string XmlMessage)
{
// lookup for the certificate
storeName = "My";
certificate = "62CFF44B1A5D6FC84BF4F016920E7AEC734C5869";
storeLocation =CAPICOM_STORE_LOCATION.CAPICOM_LOCAL_MACHINE_STORE;
//HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\My\Certificates\BF29CCE1BBD21D181CDC0D3CC5A0F60A63E407DD
//("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\SystemCertificates\\My\\Certificates\\");
//HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\My\Certificates\0F880F503084735EED6647271E3FB7CC33B3F96A
StoreClass CertStore = new StoreClass();
CertStore.Open (storeLocation, storeName,
CAPICOM_STORE_OPEN_MODE.CAPICOM_STORE_OPEN_READ_ONLY);
//search the certificate by the thumbprint
Certificates certs =
((Certificates)CertStore.Certificates).Find(CAPICOM_CERTIFICATE_FIND_TYPE.CAPICOM_CERTIFICATE_FIND_SHA1_HASH, this.certificate, false);
Certificate cert = null;
//the Find method shoul return only 1 certificate
if (certs.Count != 0)
{
cert = (Certificate)certs[1];
// create signer
SignerClass signer = new SignerClass();
signer.Certificate = cert;
// sign message
SignedDataClass data = new SignedDataClass();
string PrivK = cert.PrivateKey.KeySpec.ToString();
data.Content = XmlMessage;
//data.Content = "<?xmlversion=1.0
encoding=utf-8?><MESSAGE>Prova</MESSAGE>";
try
{
return data.Sign(signer, false,
Interop.CAPICOM.CAPICOM_ENCODING_TYPE.CAPICOM_ENCODE_BASE64);
}
catch(Exception e)
{
int i = 0;
return "false";
}
}
else
{
//...
return null;
}
}
5: I received an error (The Handle is Invalid -2147024890) on
data.Sign(signer, false,
Interop.CAPICOM.CAPICOM_ENCODING_TYPE.CAPICOM_ENCODE_BASE64);
Could please anyone help me?
Thanks in advance.
Davisco
.
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