Software Development

Earlier, I demonstrated using groovy with a simple bit of code to create an MD5 hash. Here is a Perl version, notice how little code is used.

#!/usr/bin/perl
use strict;
use warnings;
use Digest::MD5 qw(md5 md5_hex md5_base64);
use Digest::SHA qw(sha1 sha1_hex sha1_base64);
use MIME::Base64;
my $password;
if (scalar @ARGV eq 1) {
	$password = shift;
} else {
	$password = "password";
}
print "MD5 hex digest of $password = ",md5_hex($password), "\n";  # human-readable
print "MD5 base64 digest of $password = ",md5_base64($password), "\n";  # human-readable too
print "SHA1 hex digest of $password = ",sha1_hex($password), "\n";  # human-readable
print "SHA1 base64 digest of $password = ",sha1_base64($password), "\n";  # human-readable too

Pretty cool, and this code runs on just about any linux/unix machine. In Windows, I ran the code using Strawberry Perl.

I have changed employers, as if you couldn’t tell by the scarcity of posts over the last nine months! I am no longer working with Oracle Content Server. Other than the difficult to use Site Studio, I believe Content Server is a really great platform to drive data management. But all good things do come to an end eventually.

I am currently working with very large datasets on Oracle. I also write more shell script code, mostly Korn shell and also perl for more complex tasks. I was never a fan of perl, as many are not fans of Java. I have a new found respect for this all purpose Swiss Army Sledge Hammer!

I will more than likely be changing the title of this Blog as WebCenter Content is no longer the focus of my work. More likely to be Java/SOA and Quick Hacks to get the job done, or something along those lines.

For those that were curious, I actually took the photo that is displayed at the top of this Blog. This is one of my favorite catch and release fishing spots located just a few miles north of Lake City, Colorado. Hope to be back there soon!

At some point in your programming career, you will probably need to use an MD5 hash. Most likely just to get the hash for a password.

One of the simplest ways is to use groovy. Here is the code. Don’t even need to put it in the download section. Just copy the code to a file and run it.

import java.security.MessageDigest

srcWord = "password"

if (args.length > 0) {
	srcWord = args[0]
}

println "src: " + srcWord
MessageDigest md5Digest;
byte[] digest;

println "\n****************************************\n"

/* MD5 Code */
md5Digest = MessageDigest.getInstance("MD5");
md5Digest.reset();
md5Digest.update(srcWord.getBytes());
digest = md5Digest.digest();

// println "new BigInteger(1,digest).toString(): " + new BigInteger(1,digest).toString()
println "MD5: " + new BigInteger(1,digest).toString(16)
println "MD5/B64: " + digest.encodeBase64().toString()

println "\n****************************************\n"

/* Now do the same thing for SHA-1 */
md5Digest = MessageDigest.getInstance("SHA-1");
md5Digest.reset();
md5Digest.update(srcWord.getBytes());
digest = md5Digest.digest();
// println "src: " + srcWord
// println "new BigInteger(1,digest).toString(): " + new BigInteger(1,digest).toString()
println "SHA-1: " + new BigInteger(1,digest).toString(16)
println "SHA-1/B64: " + digest.encodeBase64().toString()

println "\n****************************************\n"

/* Now do the same thing for SHA-256 */
md5Digest = MessageDigest.getInstance("SHA-256");
md5Digest.reset();
md5Digest.update(srcWord.getBytes());
digest = md5Digest.digest();
// println "src: " + srcWord
// println "new BigInteger(1,digest).toString(): " + new BigInteger(1,digest).toString()
println "SHA-256: " + new BigInteger(1,digest).toString(16)
println "SHA-256/B64: " + digest.encodeBase64().toString()

println "\n****************************************\n"

/* Now do the same thing for SHA-512 */
md5Digest = MessageDigest.getInstance("SHA-512");
md5Digest.reset();
md5Digest.update(srcWord.getBytes());
digest = md5Digest.digest();
// println "src: " + srcWord
// println "new BigInteger(1,digest).toString(): " + new BigInteger(1,digest).toString()
println "SHA-512: " + new BigInteger(1,digest).toString(16)
println "SHA-412/B64: " + digest.encodeBase64().toString()

println "\n****************************************\n"

I lost posts going back to November 2011. I have the titles, so I will try to recreate some of this content in the next few days. 🙁

UCM website launch was delayed until September 6th. Now that there are containers and departments are responsible for their own data, the launch progress came to a crawl. People are finally realizing that there is work involved in owning your own data. What a surprise… NOT!

Still working full speed+ on the website, and it is looking good. Now if we could only speed up the searches!

So far, the best piece I coded was the lunch menu display. I used two jQuery plugins: A calendar component, and prettyPhoto. I display the food being served each day in schools in the jQuery calendar plugin. The data was created in an APEX application to populate the backend tables. A little materialized view magic later, and the data is available as a JSON feed from a service call to UCM using the IsJson=1 parameter on the service. I use pretty photo to display a list of food properties (similar to the side panel of a cereal box), and a graphic – also fed by a UCM service call. I’ll post the code for the calendar and popup display with a mockup JSON file for data in a few days. I spent way to much time getting this just right. Better to do a job right the first time, then to spend additional days, sometimes weeks coding again…