Encrypting files

Rails
1

Anyone know of a good (fast) way to encrypt/decrypt uploaded files in
RoR? I’ve seen this project: http://ezcrypto.rubyforge.org/ but it
only seems to encrypt strings and such. I need to encrypt files once
they are uploaded, then decrypt them when they request the file back.

Any ideas?

Thanks,

Mark

2

On Dec 17, 2005, at 12:10 PM, Mark H. wrote:

Mark-

If you want to do this one way I can think of is the use the

ezcrypto lib you found and with a few other steps you could make it
work. What you could do is once the file is uploaded, read it into a
string and Base64 encode it before it goes in the db or on the
filesystem. Then when it comes time to send the file down to a user
again, you can read it in and unencode it form base64 and then
decrypt it and use send_file or send_data to get it to the browser.

There might be a much better way to do this with less overhead but

this is one way.

Cheers-

-Ezra Z.
WebMaster
Yakima Herald-Republic Newspaper
[email protected]
509-577-7732

3

OpenSSL is in the Ruby standard library. Here’s a blog with some
sample usage:
http://weblog.masukomi.org/index.pl/view/encryption%20in%20ruby