What is MD5?


Usually when you download some software file on the internet, you will see people recording MD5, So what is MD5? Is it important or not? Readers refer to the article below of Taimienphi.vn offline.


In the following article, Taimienphi.vn will introduce you to MD5. Why do people use MD5 code to do, refer to the content of the article below.

What is MD5? Overview of MD5

What is MD5?

MD5 or in engineering it is also called MD5 Message-Digest Algorithm, is an encrypted hash function, used to check the integrity of files downloaded by users on the network or copied between storage devices.

Instead of checking and validating between two data files without any changes by comparing the raw data, MD5 will do this by summing up the values ​​on the two data files, then comparing them. to verify the integrity of the files.

However, MD5 is also proven to contain some security vulnerabilities and is not really useful for advanced encrypted data files, but can check MD5, check the file’s MD5 to verify its integrity. of standard encrypted data files.

Use MD5 Checker or MD5 Generator

The free Microsoft File Checksum Integrity Verifier (FCIV) utility allows you to generate MD5 code from all files other than just text files.

The easiest way to get the MD5 code of a sequence of letters, numbers and symbols using the Miracle Salad MD5 Hash Generator tool. Also you can refer to some more MD5 change software of files, Videos like MD5 Hash Generator, PasswordsGenerator, and OnlineMD5.

Using the same hashing algorithm will return the same results. That is, you can use the same MD5 calculator to get the MD5 code of some specific documents, then use another MD5 calculator to get the same result. This can be repeated on MD5 hash-based hash generator.

Overview of MD5

MD5 is one of the three algorithms that Ronald Rivest has created. Where MD2 is the first hash function that Ronald Rivest created in 1989, is integrated in 8-bit computers. Although still in use, MD2 is not applicable to applications requiring high security, furthermore MD2 has been shown to be vulnerable.

After one year, MD4 was born in 1990 to replace MD2. MD4 was created for 32-bit computers and is rated much faster than MD2, but also has vulnerabilities and weaknesses.

MD5 was released in 1992, and was also developed for 32-bit computers. Although MD5 is not as fast as MD4, it is considered to be more secure than previously deployed MDx versions.

Although rated as more secure than MD2 and MD4, MD5 is also proven to contain security vulnerabilities, users are recommended to use some other hash functions such as SHA-1 instead.

According to researchers at Carnegie Mellon University at the Institute of Software Engineering, “software developers, digital certificate providers (CA), website owners and users should limit their use. MD5 algorithm. Previous studies have demonstrated that MD5 is cryptographically vulnerable and is no longer suitable for use. “

In 2008, MD6 was also proposed to the US National Institute of Standards and Engineering to replace SHA-3.

Some other information about MD5 code

The MD5 code is 128-bit long and is usually represented by a 32-character hexadecimal number.

Example paragraph: “This is an experiment, the length of the text doesn’t matter“when converted to another value will display as:”6c16fcac44da359e1c3d81f19181735b“.

MD5 will check the integrity of files and data, ie users do not need to check and compare the raw data to determine the integrity of the data.

Besides, some tools, MD5 program “decrypters” are advertised to decode MD5 values, but actually create checksum values ​​from multiple values, then allow users to check checks in the database. His database to check whether the data has been changed or lost.

MD5Decrypt and MD5 Decrypter are two free online tools that allow users to do this, but they only work with some common words and phrases.

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