How to use MD5 encryption ASP

The first floor is the md5 encryption program.,This is a must.,You first put the paragraph he gave**Put it in an asp page and name it.。

Then the encrypted words are directly included on another page, and then directly encrypted with the md5 function.

For example, you want to encrypt kkkkkoo

Then write <%=md5("kkkkkoo"%> if it's to encrypt variables, just do as the first floor says.

Ideas? What's the idea? MD5 encryption?

Fainting,This tells you about the Year of the Monkey and the month of the horse.,You can slowly study the MD5 code when you have time.,Anyway, there's a way to crack MD5.,This encryption is only suitable for general** applications.,It's OK if someone else gives you a good job.。

MD5 can't be completely broken, right? You can only de-encrypt it and compare it, and make the password strong.

Oh my god paste such a long **! Who looks!

MD5 is currently open source**, using an irreversible algorithm (belonging to the current mathematical unsolvable problem), which can only realize the conversion of clear code to ciphertext, and even if md5 source ** is obtained, it is currently impossible to get the conversion of ciphertext to clear code; The only way to crack it is to use plaintext encryption for comparison (for example, the commonly used dictionary method is cracked, it takes about a week to crack the 4-digit MD5 encryption password with a P4 computer, and it takes several months to crack the 6-digit pure number password. Welcome to everyone's slab bricks! ), the use of the md5 function :

2. **It is written like this:

usr_pwd = request("password")usr_pwd = md5(usr_pwd)

MD5 stands for message digest, which means message digest, but this message digest is not an abbreviation of information content, but a 128-bit feature code obtained after mathematically transforming the original information according to the published MD5 algorithm.

This feature code has the following characteristics, first of all, it is irreversible, for example, I have a secret text such as:"my secret words"After the algorithm transformation, the md5 code (b9944e9367d2e40dd1f0c4040d4daaf7) is obtained, and the code is told to others, they have no systematic way to know what your original text is according to this md5 code.

The main purpose of the mathematical modeling graduate student upload contest is to prevent the tampering of **. The MD5 code is the characteristic code of the submitted ** and the supporting materials, and the code that uniquely identifies the work. If you change MD5 after you have committed it, it will be discovered, which is a means to eliminate cheating and package transfers.

MD5 stands for Message-Digest Algorithm 5 and was invented in the early 90's by MIT's Computer Science Lab and RSA Data Security Inc. The practical application of MD5 is to generate a fingerprint (fingerprint) of a message (byte string), which can prevent "tampering".

The MD5 Message-digest Algorithm, a widely used cryptographic hash function, produces a 128-bit (16-byte) hash value to ensure that information is transmitted in a complete and consistent manner. MD5 was designed by American cryptographer Ronald Levist and released in 1992 to replace the MD4 algorithm.

The algorithm is specified in RFC 1321.

The MD5 code can be obtained using the "MD5" verification tool, and the MD5 code is mainly used to ensure the integrity of the files uploaded by students, and it is also a means to ensure fair competition.

Any modification of the contents of the file, opening and re-saving will change the MD5 code of the file, but renaming, copying and pasting the file will not change the MD5 code.

This problem is blocked because the md5 encryption of ASP has a problem with dealing with double-byte Zheng and Hu things, and the real encryption process is a single byte by chapter, so you need to be compatible with the encryption of ASP in your dot net.

Don't ask such advanced questions in the future, you know? Ahp! （: