private static IntPtr CipherStr2CipherPtr( PRE_Cipher CC )
{
PRE_ptrCipher ptrC = new PRE_ptrCipher
{
E = Marshal.StringToHGlobalAuto( CC.E ) ,
F = Marshal.StringToHGlobalAnsi( CC.F ) ,
U = Marshal.StringToHGlobalAnsi( CC.U ) ,
W = Marshal.StringToHGlobalAnsi( CC.W ) ,
};
IntPtr C = Marshal.AllocHGlobal( Marshal.SizeOf( ptrC ) );
Marshal.StructureToPtr( ptrC , C , true );
return C;
}
public Boolean DownloadSharingFile(Protocal.SharingInfo si)
{
String copyRef = si.Reference;
String fileName = si.FileName;
try
{
String dropboxPath = BaseExtension.FileStringHelper.GetNonConflictFileName( Path.Combine( DropBoxController.DropBox_DownloadFolder , fileName ) );
UserKey uk = PreKeyring.UserKey;
PRE_KEY userKey = new PRE_KEY();
userKey.PK.PK1 = uk.PK1;
userKey.PK.PK2 = uk.PK2;
userKey.SK.X1 = uk.SK1;
userKey.SK.X2 = uk.SK2;
PRE_Cipher CKey = new PRE_Cipher();
CKey.E = si.CKey_E;
CKey.F = si.CKey_F;
CKey.U = si.CKey_U;
CKey.W = si.CKey_W;
String key = ProxyReEncryption.KeyDecrypt( userKey , CKey );
FileMetaData fi = new FileMetaData();
fi.FileName = fileName;
fi.FilePath = this.dropBoxController.DropboxSecuruStikFolder2SecuruStikFolder( dropboxPath );
fi.Key = key;
fi.PlainTextHash = "";
fi.CryptTextHash = "";
PreKeyring.FileInfo_Update( fi );
String dropboxRemotePath = this.dropBoxController.SecuruStikFolder2RemoteDropboxPath( fi.FilePath );
this.dropBoxController.CopyAsync( copyRef , dropboxRemotePath );
}
catch ( System.Exception ex )
{
log.ErrorFormat("DownloadSharingFile {0}", si.FileName, ex);
PreKeyring.SharingFile_Delete( si.Reference );
return false;
}
return true;
}
public static String KeyDecrypt( PRE_KEY key2 , PRE_Cipher CC )
{
IntPtr pKey2 = KeyStr2KeyPtr( key2 );
IntPtr C = CipherStr2CipherPtr( CC );
return KeyDecrypt( pKey2 , C );
}