private unsafe void Sign(CmsSigner signer, bool silent)
{
CAPI.CMSG_SIGNED_ENCODE_INFO signedEncodeInfo = new CAPI.CMSG_SIGNED_ENCODE_INFO(Marshal.SizeOf(typeof(CAPI.CMSG_SIGNED_ENCODE_INFO)));
CAPI.CMSG_SIGNER_ENCODE_INFO signerEncodeInfo = PkcsUtils.CreateSignerEncodeInfo(signer, silent);
byte[] encodedMessage = (byte[])null;
try
{
SafeLocalAllocHandle localAllocHandle = CAPI.LocalAlloc(0U, new IntPtr(Marshal.SizeOf(typeof(CAPI.CMSG_SIGNER_ENCODE_INFO))));
try
{
Marshal.StructureToPtr((object)signerEncodeInfo, localAllocHandle.DangerousGetHandle(), false);
X509Certificate2Collection bagOfCertificates = PkcsUtils.CreateBagOfCertificates(signer);
SafeLocalAllocHandle encodedCertBlob = PkcsUtils.CreateEncodedCertBlob(bagOfCertificates);
signedEncodeInfo.cSigners = 1U;
signedEncodeInfo.rgSigners = localAllocHandle.DangerousGetHandle();
signedEncodeInfo.cCertEncoded = (uint)bagOfCertificates.Count;
if (bagOfCertificates.Count > 0)
{
signedEncodeInfo.rgCertEncoded = encodedCertBlob.DangerousGetHandle();
}
SafeCryptMsgHandle safeCryptMsgHandle = string.Compare(this.ContentInfo.ContentType.Value, "1.2.840.113549.1.7.1", StringComparison.OrdinalIgnoreCase) != 0 ? CAPI.CryptMsgOpenToEncode(65537U, this.Detached ? 4U : 0U, 2U, new IntPtr((void *)&signedEncodeInfo), this.ContentInfo.ContentType.Value, IntPtr.Zero) : CAPI.CryptMsgOpenToEncode(65537U, this.Detached ? 4U : 0U, 2U, new IntPtr((void *)&signedEncodeInfo), IntPtr.Zero, IntPtr.Zero);
if (safeCryptMsgHandle == null || safeCryptMsgHandle.IsInvalid)
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
if (this.ContentInfo.Content.Length > 0 && !CAPI.CAPISafe.CryptMsgUpdate(safeCryptMsgHandle, this.ContentInfo.pContent, (uint)this.ContentInfo.Content.Length, true))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
encodedMessage = PkcsUtils.GetContent(safeCryptMsgHandle);
safeCryptMsgHandle.Dispose();
encodedCertBlob.Dispose();
}
finally
{
Marshal.DestroyStructure(localAllocHandle.DangerousGetHandle(), typeof(CAPI.CMSG_SIGNER_ENCODE_INFO));
localAllocHandle.Dispose();
}
}
finally
{
signerEncodeInfo.Dispose();
}
SafeCryptMsgHandle safeCryptMsgHandle1 = SignedCms.OpenToDecode(encodedMessage, this.ContentInfo, this.Detached);
if (this.m_safeCryptMsgHandle != null && !this.m_safeCryptMsgHandle.IsInvalid)
{
this.m_safeCryptMsgHandle.Dispose();
}
this.m_safeCryptMsgHandle = safeCryptMsgHandle1;
GC.KeepAlive((object)signer);
}