I am doing a regex search on binary files, and I've just discovered a problem, every so often, a 64 byte checksum is used, which throws my searches out. What I want to know is; is there a way to ignore these 64bytes, regardless of where they appear in my data?

My regex is `\x18\xC0\x40[\x42\x43][\x00\x01]\x00\x00\x00`

my problem is illustrated below;

 `0230000000FF45198085B9**18C0404301**`

 `FFFFFFFFFFFFFFFFC03CCFFFFFFFFFFF`

 `FFFFFFFFFFFFFFFF3C0CFFFFFFFFFFFF`

 `FFFFFFFFFFFFFFFF0300F0FFFFFFFFFF`

 `FFFFFFFFFFFFFFFF030F0FFFFFFF4700`

 `**000000**B9000000003C8085B9EDDF0000`

In my example, my regex (values needed in bold) obviously doesn't pick up my pattern match. This can happen at any point in the required data as well.

An observation for the checksum data is it always ends 4700, and it is always 8 bytes of FF, followed by 3-4 bytes of values, followed by 4-5 bytes of FF again.

Any help would be greatly appreciated, thanks
James