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samedi 19 mars 2016

Posts from Online Tech Tips for 03/19/2016

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Mar 18, 2016 12:50 pm | Aseem Kishore | MS Office Tips

How to Create and Use Formulas in Tables in Word

There are a lot of times when I need to include some simple data calculations in a Word document and a table is the best option. You can always try to insert an entire Excel spreadsheet into your Word doc, but that’s overkill sometimes.

In this article, I’m going to talk about how you can use formulas inside tables in Word. There are only a handful of formulas you can use, but it’s enough to get totals, counts, round numbers, etc. Also, if you are already familiar with Excel, then using the formulas in Word will be a piece of cake.

Insert Formulas into Word Tables

Let’s start out by creating a simple test table. Click on the Insert tab and then click on Table. Choose how many rows and columns you want from the grid.

insert table word

Once your table has been inserted, go ahead and add in some data. I’ve just made a really simple table with a couple of numbers for my example.

word table example

Now let’s go ahead and insert a formula. In the first example, I’m going to add the first three values in the first row together (10 + 10 + 10). To do this, click inside the last cell in the fourth column, click on Layout in the ribbon and then click on Formula at the far right.

insert word formula

This will bring up the Formula dialog with a default of =SUM(LEFT).

add formula word

If you were to simply click OK, you will see the value we are looking for in the cell (30).

added sum word

Let’s talk about the formula. Just like Excel, a formula starts with an equals sign, followed by a function name and arguments in parenthesis. In Excel, you only specify cell references or named ranges like A1, A1:A3, etc., but in Word, you have these positional terms you can use.

In the example, LEFT means all cells that are to the left of the cell in which the formula is entered. You can also use RIGHT, ABOVE and BELOW. You can use these positional arguments with SUM, PRODUCT, MIN, MAX, COUNT and AVERAGE.

In addition, you can use these arguments in combination. For example, I could type in =SUM(LEFT, RIGHT) and it would add all the cells that are to the left and right of that cell. =SUM(ABOVE, RIGHT) would add all numbers that are above the cell and to the right. You get the picture.

Now let’s talk about some of the other functions and how we can specify cells in a different manner. If I wanted to find the maximum number in the first column, I could add another row and then use the =MAX(ABOVE) function to get 30. However, there is another way you can do this. I could also simply go into any cell and type in =MAX(A1:A3), which references the first three rows in the first column.

cell reference word

This is really convenient because you can put the formulas anywhere you want in the table. You can also reference individual cells like writing =SUM(A1, A2, A3), which will give you the same result. If you write =SUM(A1:B3), it will add A1, A2, A3, B1, B2, and B3. Using these combinations, you can pretty much reference any data you like.

If you want to see a list of all the functions you can use in your Word formula, just click on the Paste Function box.

paste function word

You can use IF statements, AND and OR operators and more. Let’s see an example of a more complex formula.

if statement word

In the example above, I have =IF(SUM(A1:A3) > 50, 50, 0), which means that if the sum from A1 to A3 is greater than 50, show 50, otherwise show 0. It’s worth noting that all of these functions really only work with numbers. You can’t do anything with text or strings and you can’t output any text or string either. Everything has to be a number.

and statement word

Here’s another example using the AND function. In this example, I am saying that if both the sum and max value of A1 to A3 is greater than 50, then true otherwise false. True is represented by a 1 and False by 0.

If you type in a formula and it’s got an error in it, you’ll see a syntax error message.

syntax error word

To fix the formula, just right click on the error and choose Edit Field.

edit field

This will bring up the Field dialog. Here you just have to click on the Formula button.

edit formula

This will bring up the same Formula editing dialog that we’ve been working with since the beginning. That’s about all there is to inserting formulas into Word. You can also check out the online documentation from Microsoft that explains each function in detail.

Overall, it’s nothing even close to the power of Excel, but it’s enough for some basic spreadsheet calculations right inside Word. If you have any questions, feel free to comment. Enjoy!

The post How to Create and Use Formulas in Tables in Word appeared first on Online Tech Tips.

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Mar 18, 2016 10:56 am | Aseem Kishore | Free Software Downloads

Unlock Password Protected Zip Files

Have a ZIP file that you can’t get into because it has a password on it? If you forgot the password, the only option you have is to try and recover the password using third-party utilities. Depending on which program created the ZIP file (7-Zip, WinZip, etc.) and what type of encryption was used, your chances of recovering the password will vary.

In this article, I’m going to mention a couple of tools that I’ve used to recover a ZIP password on some test files that I created. Hopefully, you’ll be able to access your ZIP file by cracking the password using one of these tools.

It’s worth noting that if the ZIP file is encrypted using AES 128-bit or 256-bit encryption, your only option will be a brute force attack. If the password is very long, you’ll need a really powerful computer to process as many passwords per second as possible.

Also, be sure to check out my other posts on opening password protected RAR files, cracking XLS passwords, resetting Windows administrator passwords, and resetting BIOS passwords.

Elcomsoft Archive Password Recovery

In my opinion, Elcomsoft Archive Password Recovery is the best choice for recovering a password from an encrypted ZIP, RAR, ACE or ARJ archive. The software comes in two flavors: Standard and Pro. The Standard version is $49.99 and the Pro version is $99.

The main difference between the two versions is that the Pro version supports WinZip archives that use enhanced AES encryption and guarantees WinZip recovery with some limitations (must be WinZip 8.0 or earlier and the archive has to have at least 5 files). In addition, it has an additional method of recovery called Password from keys that can be used in addition to brute-force, dictionary and plain-text attacks.

What I like about this program is the number of different methods you can use to recover the password and the different options you have for each method. The toughest situation is when you have a password and you don’t know the length or what kind of characters are included. In these types of situations, you should start with the faster methods before moving on to attacks that will take much longer.

archive password recovery

Once you download and install the software, you’ll see the main interface as shown above. To get started, click the Open button and choose your archive file. By default, the Type of Attack is set to Brute-force and the options that are checked include all capital and all lowercase letters.

Before you click Start, you should go ahead and click on the Benchmark button, which will check the type of encryption on the file and give you an estimate of how long it will take using the current options.

password recovery benchmark

As you can see, it will take about 11 minutes to recover a password that was encrypted using AES 256-bit and by only looking at lowercase and uppercase letters with a maximum password length of only 4 characters. If you choose All Printable characters, the time went up to 2.5 hours in my case. Again, this is only for a short four-character password. The time goes up exponentially as the password gets longer.

If you’re not sure how long the password is, click on the Length tab and increase the maximum password length to something higher. The trial version only works up to four characters.

password length

Obviously, if you have no idea what the password is, checking All Printable and then increasing the length to 10 or higher will guarantee you more success, but it might also take way too long. I suggest starting with only letters up to a higher character count and if that doesn’t work, then add All digits and All special symbols one at a time.

Before you start with a brute-force attack, it might be worth trying a dictionary attack first as that will take less time. Choose Dictionary from the drop-down and then click on the Dictionary tab.

dictionary attack

The program comes with a small, but decent dictionary already built-in. The nice thing is that you can download bigger dictionaries online and use them in the program if you want. Of course, this won’t work if someone used a complex password, but it’s worth a shot since it’s much faster.

Another thing to note is that the whole archive can be decrypted if you happen to have one of the files that are inside the archive. This probably won’t be the case most of the time, but if you do happen to have at least one file that you know is inside the archive, you can use the Plain Text attack to decrypt the entire archive.

Also, if you happen to know the length of the password and anything else about it, you can use the Mask attack. For example, if you know the password starts with x and is 7 characters long, you would enter x?????? into the Mask box on the Range tab.

Overall, this is an excellent program and definitely worth the cost if you need to get into a ZIP or other archive file. On my test file with a short four-character passcode and 256-bit AES encryption, it worked flawlessly and got me the password in just a few minutes.

brute force attack

password recovered

The main thing is to run the program on the fastest computer you have around. The more passwords than can be tried per second, the faster you’ll break into the file.

Passware Zip Key

The other good program that I recommend is Passware Zip Key. The program is only $39, which is a bit cheaper than Elcomsoft. They also have a demo version, but it only runs each attack for one minute, so you really can’t test to see if it works, even on a short password.

However, I purchased it so that I could test it and it worked fine. It’s very similar to Elcomsoft in terms of the attacks, etc. Once you install it, click on Recover File Password and then you’ll see the options below.

passware password recovery

You can choose Run Wizard, which will let you pick from different options if you happen to know anything about the password. This is good if you know the password only contains letters, etc.

password questions

If you click on Use Predefined Settings, it will start with some simple attacks and then automatically move on to more complex attacks. If you click on the Attacks tab at the bottom, you will be able to see all the attacks that will be tried.

types of attacks

Some attacks will take longer than others, again depending on the password length and encryption type. Brute force is the slowest method, so that’s why the programs tries other methods in-between.

recovering password

Lastly, you can choose Advanced: Customized Settings and basically configure everything manually like how the Elcomsoft program is setup by default.

custom attacks

You choose an attack from the list and then click the left arrow button to add it to the queue. You can add several attacks and they will run one after the other. In my case, I choose a brute force attack with a four-character password that contains letters, numbers and symbols. It didn’t take long for Zip Key to crack my test file, which is the same one I used for testing Elcomsoft.

If you plan to purchase Zip Key, please do it using this purchase link. The price is the same, but I get a small cut for recommending the program instead of the company getting all the money. Thanks!

There are a lot of other programs out there for cracking ZIP files, but these are the two that I really liked in terms of ease of use, features and actual ability to recover the password. If you have used something else, feel free to let us know in the comments. Enjoy!

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