How to decrypt an MD5 hash: the simplest methods

In recent decades, the problems of privacy and security of information are becoming more relevant. That's why we constantly try to encrypt data using the most modern algorithms. One such technique is the use of a hash algorithm called MD5. How to decrypt the MD5 hash will now be considered. However, it is not worth counting on hoping for knowledge of cracking passwords or any other confidential information due to the difficulty of such a process and illegality.

What is an MD5 hash?

In general, hashing is understood as the conversion of any incoming data into a string of a certain length, represented in hexadecimal notation on a 128-bit basis, using a special algorithm.

In other words, you can not call such a process encryption. And in the same way you can not talk about decrypting an MD5 hash, because other methods of presenting information are used here. In addition, in this case a special system of calculations is used, which all attempts at decryption nullify.

How to decrypt MD5 hash: general principles

In the best case, it can only be about selecting the desired content by three basic methods:

• Use of the dictionary;
• The use of "rainbow tables";
• Brut method.

The initial MDA5 hashing technology was developed at the Massachusetts Institute of Technology under the guidance of Professor Ronald L. Rivest. Since then, it is widely used as one of the methods of cryptography for storing passwords and online keys, creating electronic signatures, checking the integrity of file systems, creating web identifiers, finding duplicate files , etc. And, it is believed, it is extremely difficult (though possible) to decrypt the MD5 hash using direct algorithmic methods, because even changing one of the symbols in the hexadecimal representation entails an automatic change of all the others. Thus, there is only a method, usually called brute (interference with brute force). Nevertheless, the simplest combinations can be brought into the original form.

Using online resources

If it's time to decrypt, first you can use the services of many online resources that offer their services. In general, the principle of operation is that the user enters the combination to be deciphered in a special line on the site, and then activates the selection process.

If the encoding of the initial information was done with the help of the PHP language, in some cases, online services can use a combination of the commands base_64 encode / base_64 decode. In any case, the technique implies only the selection of symbols, digits or letters in the desired combination by comparison with databases in which examples of coded results are stored.

How to decrypt the MD5 hash itself?

Some users try to decrypt the hash code themselves. But, as it turns out, it's quite problematic to do it. To simplify such a procedure, it is better to use narrowly-focused utilities, among which the following programs are clearly distinguished:

• PasswordPro.
• John the Ripper.
• Cain & Abel.
• "Stirlitz" and others.

The first two programs are designed to calculate the simplest combinations by substituting elementary combinations like 1212121.

The third one seems to be able to decrypt the MD5 hash, but it does it too slowly. However, its advantage is that it has a table generator included, although an uninitiated user is unlikely to understand this.

"Stirlitz" is a very interesting application, but it uses too few algorithms of computation, among which the most significant are BtoA, uuencode, base64, xxencode and binhex.

If that is the case, you need to use the BarsWF brute utility, which is the fastest of all known and in most cases can decrypt the MD5 hash (the password, if any, can also be brought to the desired look), with billions of hash calculations per second . However, even with the use of all these software tools, one should also take into account the fact that, in addition to the main algorithm, MDA5 encoding can be performed simultaneously using MD4 or IM.

But even in spite of all this, there are a lot of gaps in hashing. Many experts believe that the length of the code even under the condition of a 128-bit basis is too small, and therefore, with the development of software tools and the increased computing capabilities of modern processor systems, the decryption process becomes less and less time-consuming, which means that the further development and application of such tools already looks absolutely Inexpedient.

Conclusion

It remains to add that it is possible to decrypt MD5-hash not only with the help of the above-described means. If you really dig on the Internet, you can find such programs very much. The question is: do you need to do such things? It seems that this knowledge is unlikely to be useful for an ordinary user of any computer system.