Hi Jo,

Thanks very much for your assistance. I agree that that docs leave some room for development. I think I did read somewhere that check_key only checks for the presence of the various parameters. I think I discarded that from my mind, as it didn't make a lot of sense. I can see if I included the parameters or not, I don't think I need a function to tell me. Nevertheless, I made the changes that you suggested and the check_key function now returns true.

The next thing that I tried to do was to append the following to the code:

my $buf = 't';
$cipher = $rsa->encrypt($buf);

[download]

The returned the following error: "RSA.xs:227: OpenSSL error: data too large for key size at ./rsa.pl line 37."

I understand that for RSA to work, the input has to be less than the key. Given that they key reports to be 319 bits, it's hard to see how $buf = 't' pushes it over the edge, regardless of how it's encoded. I've tried to find some code examples of Crypt:Openssl::RSA but they are very hard to come by. A lot of them read the data from a file, so I had a go at that too:

open(my $fd, '<:raw', 'test') or die("Failed to open file: $!");
binmode($fd);
read($fd, my $buf, 4);
close($fd);

[download]

That yielded the same error. It's not clear how data should be passed to $rsa->encrypt. The manual seems to say "binary string" (their quotes). I tried dumping the public and private keys using get_public_key_string and get_private_key_string and then using them to encrypt and decrypt some arbitary ("test") data with the openssl command and that worked just fine, so I think the keys must be good

I am also starting to wonder if it would be easier to do the decryption maths myself with use bignum; or if I'm just opening an even bigger can of worms?

Any advise would be gratefully receieved.

Thanks,
BOfH.

In reply to Re: Importing keys into Crypt::Openssl::RSA by BOfH
in thread Importing keys into Crypt::Openssl::RSA by BOfH

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.