encrypted .zip

mike

Hi,

I have an encrypted zip file that has been sent to an email account. It has arrived at this end not as an attachment, but as text in the email! Im trying to piece this file back together but am totally unsure how to do so. It is of this format in the email;

 Content-Type: application/x-zip-compressed; name="me.zip";

Content-Disposition: attachment; filename="me.zip"

Content-Transfer-Encoding: base64



UEsDBBQAAQAIANeV9y5y6d5oGjsAAADGAAASAAAAbW9paS9BbiBhbnN3ZXIuZG9j3U9oXon1N4gU

followed by a lot more of those jumbled chars. Does anybody know of any way i can get this back in to a .zip file? I know the password for the encryption but dont know how to reassemble this to a file!!

Any help would be massively appriciated!

Thanks

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs16y ago
Mike Gold's suggestion will probably work, but I would sure try to figure out how to get your email program to show the zip file as an attachment; it is likely you can do that.
0

Mike Gold16y ago

You should be able to. The e-mail is in base64, so you'll need to convert this back into a file which should be zip format. You should be able to call the .NET library with the following on the base64 part of the Data (starting with the UE and to the end of ths string).

byte[] array = System.Convert.FromBase64String(base64String);  Then stream the array to a file using a FileStream


for example:
 
var bytes = Convert.FromBase64String(base64String);
var numberOfBytes = bytes.Length;
FileStream fs = new FileStream("myfile.zip", FileMode.Create, FileAccess.Write);
fs.Write(bytes, 0, numberOfBytes);