void m_initialize(Byte[] message)
{
RawData = message;
ContentInfo2 info = new ContentInfo2(RawData);
getSequence(info);
}
void switchInnerType(Wincrypt.CRYPTOAPI_BLOB blob)
{
ContentInfo2 info = new ContentInfo2(blob);
ContentType = info.ContentType;
switch (info.ContentType.Value)
{
case "1.3.6.1.5.5.7.12.2":
decodeCMC(info.RawData);
break;
default:
Content = info.RawData;
break;
}
}
void getSequence(ContentInfo2 info)
{
UInt32 pcbStructInfo = 0;
if (!Crypt32.CryptDecodeObject(1, Wincrypt.X509_SEQUENCE_OF_ANY, info.RawData, (UInt32)info.RawData.Length, 0, IntPtr.Zero, ref pcbStructInfo))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
IntPtr pvStructInfo = Marshal.AllocHGlobal((Int32)pcbStructInfo);
try {
Crypt32.CryptDecodeObject(1, Wincrypt.X509_SEQUENCE_OF_ANY, info.RawData, (UInt32)info.RawData.Length, 0, pvStructInfo, ref pcbStructInfo);
Wincrypt.CRYPTOAPI_BLOB sequence = (Wincrypt.CRYPTOAPI_BLOB)Marshal.PtrToStructure(pvStructInfo, typeof(Wincrypt.CRYPTOAPI_BLOB));
if (sequence.cbData == 0)
{
return;
}
UnrollPkcs7(sequence);
} finally {
Marshal.FreeHGlobal(pvStructInfo);
}
}