internal static RecipientInfoType GetRecipientInfoType(X509Certificate2 certificate)
{
RecipientInfoType unknown = RecipientInfoType.Unknown;
if (certificate == null)
{
return(unknown);
}
System.Security.Cryptography.CAPI.CERT_CONTEXT cert_context = (System.Security.Cryptography.CAPI.CERT_CONTEXT)Marshal.PtrToStructure(System.Security.Cryptography.X509Certificates.X509Utils.GetCertContext(certificate).DangerousGetHandle(), typeof(System.Security.Cryptography.CAPI.CERT_CONTEXT));
System.Security.Cryptography.CAPI.CERT_INFO cert_info = (System.Security.Cryptography.CAPI.CERT_INFO)Marshal.PtrToStructure(cert_context.pCertInfo, typeof(System.Security.Cryptography.CAPI.CERT_INFO));
switch (System.Security.Cryptography.X509Certificates.X509Utils.OidToAlgId(cert_info.SubjectPublicKeyInfo.Algorithm.pszObjId))
{
case 0xa400:
return(RecipientInfoType.KeyTransport);
case 0xaa01:
case 0xaa02:
return(RecipientInfoType.KeyAgreement);
}
return(RecipientInfoType.Unknown);
}
internal SubjectIdentifier(System.Security.Cryptography.CAPI.CERT_INFO certInfo) : this(certInfo.Issuer, certInfo.SerialNumber)
{
}
internal unsafe RecipientInfoCollection(System.Security.Cryptography.SafeCryptMsgHandle safeCryptMsgHandle)
{
bool flag = PkcsUtils.CmsSupported();
uint num = 0;
uint num2 = (uint)Marshal.SizeOf(typeof(uint));
if (flag)
{
if (!System.Security.Cryptography.CAPI.CAPISafe.CryptMsgGetParam(safeCryptMsgHandle, 0x21, 0, new IntPtr((void *)&num), new IntPtr((void *)&num2)))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
}
else if (!System.Security.Cryptography.CAPI.CAPISafe.CryptMsgGetParam(safeCryptMsgHandle, 0x11, 0, new IntPtr((void *)&num), new IntPtr((void *)&num2)))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
this.m_recipientInfos = new ArrayList();
for (uint i = 0; i < num; i++)
{
uint num4;
System.Security.Cryptography.SafeLocalAllocHandle handle;
System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_PUBLIC_KEY_RECIPIENT_INFO cmsg_key_agree_public_key_recipient_info;
uint num7;
System.Security.Cryptography.SafeLocalAllocHandle handle2;
if (!flag)
{
goto Label_020B;
}
PkcsUtils.GetParam(safeCryptMsgHandle, 0x24, i, out handle, out num4);
System.Security.Cryptography.CAPI.CMSG_CMS_RECIPIENT_INFO cmsg_cms_recipient_info = (System.Security.Cryptography.CAPI.CMSG_CMS_RECIPIENT_INFO)Marshal.PtrToStructure(handle.DangerousGetHandle(), typeof(System.Security.Cryptography.CAPI.CMSG_CMS_RECIPIENT_INFO));
switch (cmsg_cms_recipient_info.dwRecipientChoice)
{
case 1:
{
System.Security.Cryptography.CAPI.CMSG_KEY_TRANS_RECIPIENT_INFO keyTrans = (System.Security.Cryptography.CAPI.CMSG_KEY_TRANS_RECIPIENT_INFO)Marshal.PtrToStructure(cmsg_cms_recipient_info.pRecipientInfo, typeof(System.Security.Cryptography.CAPI.CMSG_KEY_TRANS_RECIPIENT_INFO));
this.m_recipientInfos.Add(new KeyTransRecipientInfo(handle, keyTrans, i));
continue;
}
case 2:
{
System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_RECIPIENT_INFO cmsg_key_agree_recipient_info = (System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_RECIPIENT_INFO)Marshal.PtrToStructure(cmsg_cms_recipient_info.pRecipientInfo, typeof(System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_RECIPIENT_INFO));
switch (cmsg_key_agree_recipient_info.dwOriginatorChoice)
{
case 2:
goto Label_0192;
}
throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_Cms_Invalid_Originator_Identifier_Choice"), cmsg_key_agree_recipient_info.dwOriginatorChoice.ToString(CultureInfo.CurrentCulture));
}
default:
throw new CryptographicException(-2147483647);
}
System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_CERT_ID_RECIPIENT_INFO certIdRecipient = (System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_CERT_ID_RECIPIENT_INFO)Marshal.PtrToStructure(cmsg_cms_recipient_info.pRecipientInfo, typeof(System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_CERT_ID_RECIPIENT_INFO));
for (uint j = 0; j < certIdRecipient.cRecipientEncryptedKeys; j++)
{
this.m_recipientInfos.Add(new KeyAgreeRecipientInfo(handle, certIdRecipient, i, j));
}
continue;
Label_0192:
cmsg_key_agree_public_key_recipient_info = (System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_PUBLIC_KEY_RECIPIENT_INFO)Marshal.PtrToStructure(cmsg_cms_recipient_info.pRecipientInfo, typeof(System.Security.Cryptography.CAPI.CMSG_KEY_AGREE_PUBLIC_KEY_RECIPIENT_INFO));
for (uint k = 0; k < cmsg_key_agree_public_key_recipient_info.cRecipientEncryptedKeys; k++)
{
this.m_recipientInfos.Add(new KeyAgreeRecipientInfo(handle, cmsg_key_agree_public_key_recipient_info, i, k));
}
continue;
Label_020B:
PkcsUtils.GetParam(safeCryptMsgHandle, 0x13, i, out handle2, out num7);
System.Security.Cryptography.CAPI.CERT_INFO certInfo = (System.Security.Cryptography.CAPI.CERT_INFO)Marshal.PtrToStructure(handle2.DangerousGetHandle(), typeof(System.Security.Cryptography.CAPI.CERT_INFO));
this.m_recipientInfos.Add(new KeyTransRecipientInfo(handle2, certInfo, i));
}
this.m_safeCryptMsgHandle = safeCryptMsgHandle;
}
internal unsafe KeyTransRecipientInfo(System.Security.Cryptography.SafeLocalAllocHandle pRecipientInfo, System.Security.Cryptography.CAPI.CERT_INFO certInfo, uint index) : base(RecipientInfoType.KeyTransport, RecipientSubType.Pkcs7KeyTransport, pRecipientInfo, certInfo, index)
{
int version = 2;
byte *pbData = (byte *)certInfo.SerialNumber.pbData;
for (int i = 0; i < certInfo.SerialNumber.cbData; i++)
{
pbData++;
if (pbData[0] != 0)
{
version = 0;
break;
}
}
this.Reset(version);
}
