CryptDecodeMessage

function CryptDecodeMessage(

  dwMsgTypeFlags: DWORD;

  pDecryptPara: PCRYPT_DECRYPT_MESSAGE_PARA;

  pVerifyPara: PCRYPT_VERIFY_MESSAGE_PARA;

  dwSignerIndex: DWORD;

  pbEncodedBlob: LPBYTE;

  cbEncodedBlob: DWORD;

  dwPrevInnerContentType: DWORD;

  pdwMsgType: LPDWORD;

  pdwInnerContentType: LPDWORD;

  pbDecoded: LPBYTE;

  pcbDecoded: LPDWORD;

  ppXchgCert: PPCCERT_CONTEXT;

  ppSignerCert: PPCCERT_CONTEXT

):BOOL;