[racket] Another PLaneTs crypto lib usage question?...

From: Rüdiger Asche (rac at ruediger-asche.de)
Date: Mon Apr 30 13:08:44 EDT 2012

Thanks for the response, but I'm not sure if that answers my question... I now understand that #:padding depicts an optional named parameter, but

(define dummy (encrypt cipher:aes-128 devicekey nonce #"1234567887654321" #:padding #f))

is not accepted by Racket, so how would I do it?


  ----- Original Message ----- 
  From: Doug Williams 
  To: Rüdiger Asche 
  Cc: users at racket-lang.org 
  Sent: Saturday, April 28, 2012 10:54 PM
  Subject: Re: [racket] Another PLaneTs crypto lib usage question?...

  I have forked the crypto package to perform these actions for my own code and to fix some other problems with post 1.0.0 versions of OpenSSL. I submitted a bug report that at least removes the errors when we go to later OpenSSL versions, but haven't seen any response. I don't have the throughput to take over maintenance of the package, but would be happy to give my forked version over to anyone who does.
  Do we have a process for taking over orphaned projects like this? Or does anyone know the original developers?

  On Saturday, April 28, 2012, Rüdiger Asche wrote:

    Hi there,

    I'm working with the crypto lib from PLaneT. It actually works well, so far, thanks for the wrappers (it's a Scheme interface to OpenSSL).

    My question is, how do I turn off padding, i.e. what do I have to pass (and where) as an additional parameter to e.g.

    (define dummy (encrypt cipher:aes-128 devicekey nonce #"1234567887654321"))

    to turn off padding (which would be the equivalent to calling EVP_CIPHER_CTX_set_padding())? I see that there is a wrapper for that function in the lib, but I guess I don't yet understand enough about syntaxes and wrappers to figure out how 

    (define (cipher-encrypt type key iv #:padding (pad? #t))

    translates to a function call to encrypt where the pad parameter can be passed a value.

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