[cryptography] looking for DES implementation in C

Billy Brumley bbrumley at gmail.com
Thu Feb 16 18:05:13 EST 2012


I pointed my students to this clean one for a course I recently ran:

http://mayor.fri.uniza.sk/v731/u2/des.c

BBB

On Thu, Feb 16, 2012 at 2:39 PM, ianG <iang at iang.org> wrote:
> As you say it is a course assignment, there is an option.  Find the standard
> definition, and give it to your students to code it up from the standard.
>
> This is actually quite a good exercise because it gets into the arcania of C
> numbers definitions.  Also, the standard definition comes with a couple of
> test vectors, so it is possible to know whether you got it right.
>
> As a data point, it took myself and a mate one weekend to code it from
> standard, once upon a time.  Working together.
>
> Just a thought :)
>
> iang
>
>
>
> On 17/02/12 09:33 AM, Jonathan Katz wrote:
>>
>> I'm looking for a stand-alone implementation of DES in C. Can anyone
>> point me to one (or send me one of their own)? Note: I know that there
>> exist C crypto libraries that include DES, but I'd rather not install an
>> entire library just to get access to DES.
>>
>> (For those who are curious: this is for a course assignment. Though now
>> that the students have alerted me to the fact that DES implementations
>> seem to be hard to find -- doesn't anyone use triple DES? -- I'm also
>> interested myself in getting my hands on one.)
>> _______________________________________________
>> cryptography mailing list
>> cryptography at randombit.net
>> http://lists.randombit.net/mailman/listinfo/cryptography
>
>
> _______________________________________________
> cryptography mailing list
> cryptography at randombit.net
> http://lists.randombit.net/mailman/listinfo/cryptography



More information about the cryptography mailing list