Hello,
We have a program which is signing files with CAPICOM. Those signed files
(detachted) can't be verified by the .NET classes. I receive "Invalid
Signature".
When I watch the signedCms.certificates(0) I see the certificate but the
CheckSignature is failing.

I see that the signed file there are linebreaks after 64 characters.
When I sign the file with .NET the linebreaks are on 74 characters.

How can I verify signed files by capicom with the .NET assemblies ?

--CAPICOM code
   SignedData = New CAPICOM.SignedDataClass
   Signer = New CAPICOM.SignerClass

   bs = BReader.ReadBytes(System.Convert.ToInt32(BReader.BaseStream.Length))

   Dim h As GCHandle = GCHandle.Alloc(bs, GCHandleType.Pinned)

   Dim ptr As System.IntPtr = Marshal.UnsafeAddrOfPinnedArrayElement(bs, 0)

   SignedData.Content = ptr

   h.Free()

   Signer.Certificate = c

   strSignString = SignedData.Sign(Signer, True,
CAPICOM.CAPICOM_ENCODING_TYPE.CAPICOM_ENCODE_BASE64)

   Dim sw As New System.IO.StreamWriter(SignedFile)
   sw.Write(strSignString)
   sw.Close()

   SignedFile.Close()
   'BReader.Close()

--.NET verify code to verify the signed file
   Dim bufferfile As Byte() = File.ReadAllBytes(strDataFileName)
     Dim strSignedFile64 As String = File.ReadAllText(strSignedFile)
     'Place signature buffer in a ContentInfo object.

     Dim contentInfo As ContentInfo = New ContentInfo(bufferfile)

     'Now Instantiate a SignedCms object with the ContentInfo above. Set
the detached content file upon which the signature is based.

     Dim signedCms As SignedCms = New SignedCms(contentInfo, True)

     'Decode buffersignature bytes into the pkcs7 object.

     signedCms.Decode(Convert.FromBase64String(strSignedFile64))

     'Now check for the detached signature; the CheckSignature function
should return a 'true' value.

     signedCms.CheckSignature(True)