Encrypting binary and text data

Encrypting binary and text data
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Subject Author Date
Encrypting binary and text data jma 10-04-2007
Posted by Walter Roberson on October 24, 2007, 6:43 pm
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>On Tue, 23 Oct 2007, in the Usenet newsgroup comp.security.misc, in article

>>A general question ... are you from Microsoft?

>Well, you _are_ posting from a search engine instead of the news
>server your ISP provides, so you really could use that to attempt to
>find out. I know that the short strings to the right of the '@' sign
>in a posting address are hard to figure out, but if you REALLY put your
>mind to it, you might discover he works for a Canadian government
>scientific research organization, though like most of us he's not
>speaking officially or unofficially for that organization.

To be fair to Dash: I was posting from a personal account, not
from my work email. On the other hand, the 50-some-odd thousand
google hits on my name would locate my workplace pretty quickly.

Posted by Walter Roberson on October 24, 2007, 7:02 pm
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>On Oct 4, 9:13 pm, rober...@hushmail.com (Walter Roberson) wrote:

>> efficiency for the sake of security. If so, then you should start
>> asking yourself how *much* security you need, and what kind of
>> events you are attempting to secure against, and how much inefficiency
>> you are willing to put up with to achieve that level of security.

>A general question ... are you from Microsoft?
>I am asking you this question because you have spoken line a true MS
>techie but provided no help at all to the poor soul who asked the
>question.


Microsoft: "Where do you want to go today?"

Me: "What the heck are you trying to do today?!"


Posted by Barry Margolin on October 5, 2007, 2:36 am
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> Hi all,
>
> I am pretty new to the subject so if I write sth stupid just point it
> out to me loud... I want to encrypt chunks of data that include ascii
> character. So it's not plain text but rather a binary stream. My
> question is whether an algorithm like AES is efficient and what
> problems I may face.

Most of the standard encryption algorithms don't care whether the input
data is text or binary. It's just raw data.

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***

Posted by jma on October 5, 2007, 5:10 am
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On Oct 5, 8:36 am, Barry Margolin wrote:

>
> > Hi all,
>
> > I am pretty new to the subject so if I write sth stupid just point it
> > out to me loud... I want to encrypt chunks of data that include ascii
> > character. So it's not plain text but rather a binary stream. My
> > question is whether an algorithm like AES is efficient and what
> > problems I may face.
>
> Most of the standard encryption algorithms don't care whether the input
> data is text or binary. It's just raw data.
>
> --

Hi Barry,

I thought so, but since I've found no literature or examples for binary
+text data I wanted to make sure that I don't miss a pitfall. Thanks a
lot!

-- dimitris


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