internal static unsafe CAPI.CMSG_SIGNER_ENCODE_INFO CreateSignerEncodeInfo(CmsSigner signer, bool silent)
{
CAPI.CMSG_SIGNER_ENCODE_INFO signerEncodeInfo = new CAPI.CMSG_SIGNER_ENCODE_INFO(Marshal.SizeOf(typeof(CAPI.CMSG_SIGNER_ENCODE_INFO)));
SafeCryptProvHandle invalidHandle1 = SafeCryptProvHandle.InvalidHandle;
uint pdwKeySpec = 0U;
bool pfCallerFreeProv = false;
signerEncodeInfo.HashAlgorithm.pszObjId = signer.DigestAlgorithm.Value;
if (string.Compare(signer.Certificate.PublicKey.Oid.Value, "1.2.840.10040.4.1", StringComparison.Ordinal) == 0)
{
signerEncodeInfo.HashEncryptionAlgorithm.pszObjId = "1.2.840.10040.4.3";
}
signerEncodeInfo.cAuthAttr = (uint)signer.SignedAttributes.Count;
signerEncodeInfo.rgAuthAttr = PkcsUtils.CreateCryptAttributes(signer.SignedAttributes);
signerEncodeInfo.cUnauthAttr = (uint)signer.UnsignedAttributes.Count;
signerEncodeInfo.rgUnauthAttr = PkcsUtils.CreateCryptAttributes(signer.UnsignedAttributes);
if (signer.SignerIdentifierType == SubjectIdentifierType.NoSignature)
{
signerEncodeInfo.HashEncryptionAlgorithm.pszObjId = "1.3.6.1.5.5.7.6.2";
signerEncodeInfo.pCertInfo = IntPtr.Zero;
signerEncodeInfo.dwKeySpec = pdwKeySpec;
if (!CAPI.CryptAcquireContext(out invalidHandle1, (string)null, (string)null, 1U, 4026531840U))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
signerEncodeInfo.hCryptProv = invalidHandle1.DangerousGetHandle();
GC.SuppressFinalize((object)invalidHandle1);
signerEncodeInfo.SignerId.dwIdChoice = 1U;
X500DistinguishedName distinguishedName = new X500DistinguishedName("CN=Dummy Signer");
distinguishedName.Oid = new Oid("1.3.6.1.4.1.311.21.9");
signerEncodeInfo.SignerId.Value.IssuerSerialNumber.Issuer.cbData = (uint)distinguishedName.RawData.Length;
SafeLocalAllocHandle localAllocHandle1 = CAPI.LocalAlloc(64U, new IntPtr((long)signerEncodeInfo.SignerId.Value.IssuerSerialNumber.Issuer.cbData));
Marshal.Copy(distinguishedName.RawData, 0, localAllocHandle1.DangerousGetHandle(), distinguishedName.RawData.Length);
signerEncodeInfo.SignerId.Value.IssuerSerialNumber.Issuer.pbData = localAllocHandle1.DangerousGetHandle();
GC.SuppressFinalize((object)localAllocHandle1);
signerEncodeInfo.SignerId.Value.IssuerSerialNumber.SerialNumber.cbData = 1U;
SafeLocalAllocHandle localAllocHandle2 = CAPI.LocalAlloc(64U, new IntPtr((long)signerEncodeInfo.SignerId.Value.IssuerSerialNumber.SerialNumber.cbData));
*(sbyte *)(void *)localAllocHandle2.DangerousGetHandle() = (sbyte)0;
signerEncodeInfo.SignerId.Value.IssuerSerialNumber.SerialNumber.pbData = localAllocHandle2.DangerousGetHandle();
GC.SuppressFinalize((object)localAllocHandle2);
return(signerEncodeInfo);
}
else
{
System.Security.Cryptography.SafeCertContextHandle certContext1 = X509Utils.GetCertContext(signer.Certificate);
if (!CAPI.CAPISafe.CryptAcquireCertificatePrivateKey(certContext1, silent ? 70U : 6U, IntPtr.Zero, out invalidHandle1, out pdwKeySpec, out pfCallerFreeProv))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
signerEncodeInfo.dwKeySpec = pdwKeySpec;
signerEncodeInfo.hCryptProv = invalidHandle1.DangerousGetHandle();
GC.SuppressFinalize((object)invalidHandle1);
CAPI.CERT_CONTEXT certContext2 = *(CAPI.CERT_CONTEXT *)(void *) certContext1.DangerousGetHandle();
signerEncodeInfo.pCertInfo = certContext2.pCertInfo;
if (signer.SignerIdentifierType == SubjectIdentifierType.SubjectKeyIdentifier)
{
uint pcbData = 0U;
SafeLocalAllocHandle invalidHandle2 = SafeLocalAllocHandle.InvalidHandle;
if (!CAPI.CAPISafe.CertGetCertificateContextProperty(certContext1, 20U, invalidHandle2, out pcbData))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
if (pcbData > 0U)
{
SafeLocalAllocHandle pvData = CAPI.LocalAlloc(64U, new IntPtr((long)pcbData));
if (!CAPI.CAPISafe.CertGetCertificateContextProperty(certContext1, 20U, pvData, out pcbData))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
signerEncodeInfo.SignerId.dwIdChoice = 2U;
signerEncodeInfo.SignerId.Value.KeyId.cbData = pcbData;
signerEncodeInfo.SignerId.Value.KeyId.pbData = pvData.DangerousGetHandle();
GC.SuppressFinalize((object)pvData);
}
}
return(signerEncodeInfo);
}
}
