The principle explanation of cracking is a must see for beginners

The speed of cracking depends on two aspects: one is the speed of the computer, which is the decisive factor, and the other is the encryption format of the file. Take the ZIP package as an example, the ZIP format will be relatively fast, and the 7Z format will be the slowest. Generation cracking uses the same software, but the difference is that the computers used are different. Using clusters to crack multiple times or mainframe computers, the speed of a personal computer cannot match, even so, sometimes it takes a day or two to crack a complex encrypted file. Therefore, cracking is a technical activity. Don't think that it will succeed if you directly download software and hand it to the computer with brute force. If you want to crack a complex password, you have to learn some techniques. Let's talk about the principle of cracking:

1. What is brute force cracking? Brute-force

, or exhaustive method, is a method of deciphering passwords, that is, calculating passwords one by one until the real password is found. For example, a password that is known to be four digits and consists entirely of numbers may have 10000 combinations, so the correct password can be found in up to 10000 attempts. In theory, any password can be cracked using this method. The only problem is how to shorten the trial and error time. Some people use computers to increase efficiency.

In fact, even a brute force cracking method is ineffective for some passwords with a certain complexity. Although the computer computing speed is fast, it is not fast enough to process hundreds of millions of test operations in a limited short time. Why do you say that? For example, suppose the password has only 8 digits, each bit may be 26 letters (52 types depending on case), add 10 numbers, and add some special characters (such as @#$%^, etc., suppose there are only 10, but actually more than 10), that is, the possibility for each bit is 52+10+10=72, and the 8-bit traversal is 72 to the 8th power of 72, which is about 600 trillion!!! Unless you use a large cluster computer to crack it. So, using a personal PC to crack a password usually takes a very long time. Of course, sometimes if you are lucky, you may try it right in a few minutes.

2. What is dictionary cracking? (Dictionary)

First of all, we explain the dictionary file. The dictionary file is a text file that is assembled together with passwords that hackers believe are often used by some Internet users and passwords that have been obtained through various means in the past. The cracker program will automatically test them one by one in order. In other words, only the cracked user's password exists in the dictionary file can it be found in this way. Don't underestimate this method, which seems to be full of waiting to be found. Since different hackers often exchange dictionary files with each other on the Internet, a dictionary file circulated on the Internet usually contains a lot of accumulated hacker experience. For users with low security awareness, the cracking rate is very high.

3. What is Xieve cracking?

It is a type of brute force cracking. The cracking only checks common character combinations in English words. It can improve the speed of brute force cracking by skipping meaningless character combinations.

4. Known Password/Part:

It cracks some passwords by checking the way they enter the password in the "value", and you can check whether certain passwords are correct without opening the file. This hack can be combined with other hacks using the merge hack option. For example, if you know that one Word in your password is "1980", you can set the "value" to "1980". Use merge cracking for joint dictionary cracking and known password/partial cracking

5.. Previous Passwords

, which recovers passwords by checking other crackdowns previously used on other files, automatically saves all found passwords

6.  There

are two sub-functions under the crack adjuster: Change Casing and Reverse Password. For example, when selecting a Xieve crack after selecting to crack the change letter of the regulator. Then all password words in Xieve will be modified to upper case, lower case, turn, mixed, etc.

7.  Join Attacks

 is to crack the password in sections. For example, the password length is 8 bits, the first four bits are known, and the last four bits are unknown, then choose to set the total number of password digits to 8 bits after merge and crack. Add a known password/"value" after partial cracking, select 1234 password length from 1 to 4; select brute force crack for another unknown part, select length from 5 to 8