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Question?Can graphics files be encrypted?

Obis sly  you can encrypt a graphics file. After all, most encryption 

algorithms don't care about the intellectual content of a file. All they 

chew on is a series of byte values. Therefore, most any encryption program 

that works on ordinary text files will work on graphics files as well.

Why would you want to encrypt a graphics file?

 Mostly to control who canview its contents. You can invent a proprietary file format and that mightslow a file format hack down for, say, five or ten minutes. You could add a proprietary data compression scheme, possibly a twisted variation of a already public algorithm. 

Realize that an encrypted graphics file still might not be very secure. 

For every data encryption algorithm there exists at least one method of 

getting around it, although it may take hundreds of computers and many

years to fully employ and execute that method! 

XOR is very simple and fast, which is a must for a graphics file 

translators/viewers that must decrypt a file on the fly.  A short key might be very easily discovered in this way.

The SMPTE DPX file format supports such an encryption feature.If you wish to use a public key/private key encryption method, then 

storing the public key in the file format header (usually as a 4-byte 

field) and only encrypting the image data would be the way to go. 

If you really need to make the contents of a graphics file secure, then 

I'd suggest not only using some form of data encryption, but also create

an unconventional and proprietary file format and do not publish its 

format specification.

Can graphics files be infected with a virus?

Most graphics files, however, contain only static

data and no executable code. The code that reads, writes, and displays

graphics data is found in translation and display programs and not in the

graphics files themselves. If reading or writing a graphics file caused a

system malfunction is it most likely the fault of the program reading the

file and not of the graphics file data itself.

With the introduction of multimedia we have seen new formats appear, and

modifications to older formats made, that allow executable instructions to

be stored within a file format. These instructions are used to direct

multimedia applications to play sounds or music, prompt the user for

information, or display other graphics and video information. And such

multimedia display programs may perform these functions by interfacing

with their environment via an API, or by direct interaction with the

operating system. One might also imagine a truly object-oriented graphics

file as containing the code required to read, write, and display itself.

Once again, any catastrophes that result from using these multimedia

application is most like the result of unfound bugs in the software and

not some sinister instructions in the graphics file data. Such "logic

bombs" are typically exorcised through the use of testing using a wide

variety of different image files for test cases.

If you have a virus scanning program that indicates a specific graphics

file is infected by virus, then it is very possible that the file

coincidentally contains a byte pattern that the scanning programming

recognizes as a key byte signature identifying a virus. Contact the author

(or even read the documentation!) of the virus scanning program to discuss

the probability of the mis-identification of a clean file as being

infected by a virus. Save the graphics file, as the author will most

likely wish to examine it as well.

If you suspect a graphics file to be at the heart of a virus problem you

are experiencing, then also consider the possibility that the graphics

file's transport mechanism (floppy disk, tape or shell archive file,

compressed archive file, and so forth) might be the original source of the

virus and not the graphics file itself.

What do Graphic Designers do?

What do Graphic Designers do?
Graphic designers use a sophisticated level of design to create advertising, illustration, logos, websites, and other visual materials for their clients. These trained professionals work alone or in teams, under the supervision of art directors and alongside copywriters, to generate interesting, unique images for their client base.

The most successful graphic designers pair their creative ability with technical knowledge and a professional level of communication. Because about 25 percent of graphic designers are self-employed, business skills as well as creativity are important. So, thinking is good factor in Graphics designing world.

Spend some time of a Graphic Designer
The individual duties of graphic designers depend highly on their job descriptions. For those who are self-employed, the job can change on a week-by-week basis or time to time, with a number of projects requiring daily attention one week, and a lack of work the next and get ready for tomorrow. Wage-and-salary graphic designers generally have a more stable work week, although deadlines and other requirements can lead to a work week that exceeds 40 hours or depending on the situation.

I can do that without a graphic design school or program! Is there anything else that I’d be missing?

Well, a load of potentially strong connections for one. Your classes would be filled with like-minded people that are interested in a lot of the same things as you. Most often, schools will have connections in one way or another with the industry. Some employers almost have a partnership with some of these graphic design schools.
You will most likely miss some of the teamwork aspects of things, which can be really important if you end up at a graphic design studio. Learning to work along side with others can be really important. This is most often a part of the graphic design program.
You can ask your educators or classmates questions about anything you are unsure about. You can get feedback and critiques, learn and grow a lot faster in a class environment. In a solo environment, you have no real way to measure how good or bad you are, and if you are on track or missing the mark.
Most good programs offer a work practicum, which is a great way to get your feet wet with some experience, and at the same time, potentially land you a job where you’ve been placed.

What is raster, vector, metafile, PDL, VRML, and so forth?

What is raster, vector, metafile, PDL, VRML, and so forth?

These terms are used to classify the type of data a graphics file contains.
Raster files
Raster files (also called bitmapped files) contain graphics information
described as pixels, such as photographic images.

Vector
Vector files containdata described as mathematical equations and are typically used to store line art and CAD information.

Metafiles
Metafiles are formats that may contain
either raster or vector graphics data.

Page Description Languages (PDL)
Page Description Languages (PDL)are used to describe the layout of a printed page of graphics and text.

Animation formats are usually collections of raster data that is displayed
in a sequence. Multi-dimensional object formats store graphics data as a
collection of objects (data and the code that manipulates it) that may be
rendered (displayed) in a variety of perspectives. Virtual Reality
Modeling Language (VRML) is a 3D, object-oriented language used for
describing "virtual worlds" networked via the Internet and hyperlinked
within the World Wide Web. Multimedia file formats are capable of storing
any of the previously mentioned types of data, including sound and video
information.

Do I really need to get a graphic design degree?

Many high school students that are interested in a graphic design career wonder if it is really necessary to attend a school and get a degree or certificate in graphic design. Do I really need one if I’m really artistic to begin with? They can be great at sketching, painting, and so on. Others might have some good experience working with software such as Photoshop, Illustrator, Flash, and so on. They think that since they understand software, and have gone through the tutorials, that they can do this graphic design thing. You might have a chance if you can piece some of these things together, and the employer isn’t at all picky. You might be able to fluke it.
But graphic design is not just about creativity and / or software. Graphic design is about visual problem solving, and meeting the needs of the client. It’s not about making something look cool, but rather to sell a product or an idea visually in a captivating way. A good graphic design school or program will mold and shape you so you can do just that.