03-10-2015
TrueAbility Linux Showdown
Want to flex your scripting skills? Also want a chance to win awesome prizes? If so, you should compete in Linux Showdown 8: “The Assembler” that TrueAbility is hosting!
TrueAbility was built with tech professionals in mind and has a vast community of Linux members. Everything from Linux challenges and self-assessments, to blog posts and Linux jobs can be found at TrueAbility.
We are launching an old school challenge to test tech pros' scripting skills and they are calling it their most difficult challenge EVER. It goes live on March 16th, so you have a few days to brush up your Hardware Programming Language: Assembly. The top 50 techs will advance to an even more challenging round 2.
Think you have what it takes to make it on their leaderboard and advance to round 2?
Lots of prizes are going to be given away! They range from Linux Foundation Certified Engineer Exam credits and TrueAbility Abilityscreens to DigitalOcean credits and even a D-Link AC3200 Ultra Wi-Fi Router. It doesn't cost anything to join in on the fun. Prove what you've got while winning awesome prizes. You won't want to miss this!
We Also Found This Discussion For You
1. UNIX for Beginners Questions & Answers
Hello,
I am on a Mac and trying to clean up some monthly files with a very simple SED:
sed '3,10d;/<ACROSS>/,$d' input.txt > output.txt
(from the input, delete lines 3 - 10; then delete from the line containing <ACROSS> to the end of the file)
then output to output.txt
Even when I try... (2 Replies)
Discussion started by: verbatim
2 Replies
LEARN ABOUT PHP
openssl_spki_export_challenge
OPENSSL_SPKI_EXPORT_CHALLENGE(3) 1 OPENSSL_SPKI_EXPORT_CHALLENGE(3)
openssl_spki_export_challenge - Exports the challenge assoicated with a signed public key and challenge
SYNOPSIS
string openssl_spki_export_challenge (string &$spkac)
DESCRIPTION
Exports challenge from encoded signed public key and challenge
PARAMETERS
o $spkac
- Expects a valid signed public key and challenge
RETURN VALUES
Returns the associated challenge string or NULL on failure.
ERRORS
/EXCEPTIONS
Emits an E_WARNING level error if an invalid argument is passed via the $spkac parameter.
EXAMPLES
Example #1
openssl_spki_export_challenge(3) example
Extracts the associated challenge string or NULL on failure.
<?php
$pkey = openssl_pkey_new('secret password');
$spkac = openssl_spki_new($pkey, 'challenge string');
$challenge = openssl_spki_export_challenge(preg_replace('/SPKAC=/', '', $spkac));
?>
Example #2
openssl_spki_export_challenge(3) example from <keygen>
Extracts the associated challenge string issued from the <keygen> element
<?php
$challenge = openssl_spki_export_challenge(preg_replace('/SPKAC=/', '', $_POST['spkac']));
?>
<keygen name="spkac" challenge="challenge string" keytype="RSA">
SEE ALSO
openssl_spki_new(3), openssl_spki_verify(3), openssl_spki_export(3), openssl_md_method(3), openssl_csr_new(3), openssl_csr_sign(3).
PHP Documentation Group OPENSSL_SPKI_EXPORT_CHALLENGE(3)