Key Challenges Search Results

How To: Generate Private Encryption Keys with the Diffie-Hellman Key Exchange

When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we're going to look specifically at how to encrypt data in Python with dynamically generated encryption keys using what is known as the Diffie-Hellman key exchange.

Hack Like a Pro: Digital Forensics for the Aspiring Hacker, Part 8 (More Windows Registry Forensics)

Welcome back, my fledgling hackers! Let's continue to expand our knowledge of digital forensics, to provide you the skills necessary to be a digital forensic analyst or investigator, as well make you a better hacker overall. In your attempts to enter a system or network undetected, it is key to understand what a skilled forensic investigator can learn about you, the alleged hacker.

How To: Swap the Menu & Back Buttons on Your Samsung Galaxy Note 2 for Easier Left-Handed Navigation

Throughout history, almost every superstition dealing with evil has had something to do with left hands. In the seventeenth century, it was thought that the Devil himself baptised his followers using his left hand. Today, studies show that left-handed people are more likely to be schizophrenic, alcoholic, delinquent, dyslexic, have Crohn's disease and ulcerative colitis, and a slew of other medical problems. To top it all off, left-handed people have an average lifespan that is 9 years shorte...

How To: Replace a Broken Home Button with a Soft Key on Your Samsung Galaxy Note 2

There may only be a few hardware buttons on your Samsung Galaxy Note 2, but when they're not working, your phone might as well be a doorstop. A few years back, I was texting while walking to class and a student on a bicycle crashed into me. My phone was flung thirty feet—straight into a puddle. I picked it up and checked for damage, but everything seemed okay. The biker apologized profusely, but nothing was wrong, so I told him not to worry about it and proceeded to class.

How To: Create a 3D video game using Alice online software

Shaun will teach us how to create a 3D video game compatible with MAC or PC with no prior programming knowledge. First download Alice, a 3D World program that can be turned into a video game. Open Alice, click on "add objects", click on "more controls" and select your choice of aspect ratio such wide screen. Now you can import your own 3D models that Shaun will show you at the end of the tutorial or choose from a wide selection that comes with Alice. In addition, if you click on "home," "web ...

How To: Prank a Coworker or Friend by Flipping Their Computer Screen Upside-Down

The perfect way to avoid boredom at work or in the classroom is with a good old-fashioned prank, and this one is for tech-minded. In the video below, you'll see how to change your coworker's (or classmate's) computer screen to be display upside-down, which will totally freak them out when they return from lunch or the restroom. The best part is watching them try to revert it back to normal!

How To: Boot in safe mode in Windows XP

There are times when you must start up your Windows XP computer system in Safe Mode, for example if you need to remove certain viruses, key loggers, adware, etc. that cannot be removed while in standard mode. If you want to learn how to boot in safe mode in Windows XP, you should watch this. 1. Turn on your computer. Make sure your monitor is on and you do not step away from your computer, as booting into safe mode happens within the first minute of when you turn on your computer. You should ...

How To: Take a screenshot in Mac OS 10.5

This is a Computers & Programming video tutorial where you will learn how to take screenshots on Mac OS 10. 5. Andrew Grant says there are several ways of doing this. The easiest way is to hold down the Command and Shift key and press 3. You will get a screenshot of the entire desktop. To take a screenshot of a selected area, hold down the Command and Shift key and press 4. The cursor now changes into a target. The figures next to it are the values of the pixels from the left hand top corner....

How To: Create bevels in Xara Web Designer

The video shows us how to create bevels in Xara web designer. Firstly using the rectangle tool hold down the Ctrl key to create a square. The problem with the Xara web designer is that it hasn't got a convert to edit the shape features which actually means that you cant select individual nodes with the shape editor tool which may create some other line. However you can select individual nodes by going to arrange/combine shapes/add shapes with selecting the rectangle. And by doing changes the ...

How To: Split a circle into segments in Xara Xtreme

Learn how to split a circle into segments with Xara Xtreme. First select the shape editor tool. Drag the tool to the circle. The dialogue at the bottom communicates what steps to choose next. Holding the Ctrl key drag a straight line within the circle, click on the selector tool (yellow arrow on the left of the middle row) to enable the option of selecting. This saves 1 line on drawing layer 1 also and enables the marquee (flexible box) that you want to manipulate around the circle encasing t...

How To: Make a homemade key lime pie

Craving key lime pie? Make one at home! Who knew those tiny little limes could make a pie with so much flavor? Your friends will love this easy to make, tart treat. Learn how to make a homemade key lime pie with help from this instructional video.

News: Stay at the White House in This Week's Replication Challenge

As most of you already know, the White House is the seat of the Executive branch of government in the United States. Constructed in 1792, it is one of the oldest buildings in the U.S. During the War of 1812, it was burned down and later rebuilt. The White House was inspired by a few foreign government buildings and is somewhat Greek in appearance.

How To: Use 3 point lighting to light your videos like pros

Three point lighting is the key to MAKING videos look professional. Tom Skowronski, the associate editor of Videomaker, guides us through the process of three point lighting. Three point lighting involves the use of three types of light to create a professional appearance when video taping. First, a key light is used to provide bright illumination of the subject. Then, a fill light cleans up the dark areas on the face. Lastly, a backlight fills serves to separate the subject from the background.

How To: Track Your Lost iPhone, iPad, or Mac Even When Its Offline — As Long as This Feature Is Enabled

Apple's latest updates to its operating systems add another security feature to its Find My service, so you have an even better chance at locating your lost iPhone, iPad, or Mac should it ever happen. As long as you have the option enabled, you can leverage other Apple users' devices to find yours on the map.