Domestic well-known network security quotient Rising company has issued a professional research report on the strength of the password, the study listed the most common password set of Chinese netizens and American netizens. Research shows that the
Comments: For a long time, MD5 encryption and verification are very secure. Many forums and software Save the password of the user name after MD5 encryption. Compared with the previous plaintext storage, the stored information after MD5 encryption
At present, it can be realized: MD5 algorithm, SHA256 algorithm, first MD5 SHA256, SHA256 after MD5, two MD5, two times SHA256, 8-bit MD5 algorithm after the first 8-bit SHA256, 8-bit SHA256 algorithm after the former 8-bit MD5 algorithm, Password
the MD5 algorithm has the following characteristics:1, compressibility: Any length of data, calculated the length of the MD5 value is fixed. 2, easy to calculate: It is easy to calculate the MD5 value from the original data. 3, anti-modification:
Currently, the MD5 password database has a huge amount of data, and most common passwords can reverse query the plaintext of the password through the MD5 Digest. To prevent internal personnel (persons who can access database or database backup files)
The MD5 value corresponding to the admin password, which can be 16-bit or 32-bit.AdminOfMD5 ValuePassword EncryptionMD5 Value, 123456,Admin,Admin888
If you encounter an MD5 encrypted file (usually this one) without knowing the password,Replace 7a57
IOS MD5 encryption and iosmd5 Encryption
1. MD5 Encryption
Message Digest Algorithm MD5 (the fifth version of the Message Digest Algorithm in Chinese) is a hash function widely used in the computer security field to provide Message integrity
What is MD5?Message-digest algorithm 5 (Information-Digest algorithm). Often said "MD5 encryption", is it → information-digest algorithm.When downloading something, you often see the MD5 value in some of the compression package properties. And this
The application of the MD5 algorithm generates a summary of the information.
A typical application of MD5 is to generate a Message Digest (message-Digest) for a piece of information to prevent tampering. For example, many software in UNIX have a
Copy CodeThe code is as follows:
Echo substr (MD5 ("admin"), 8,16); 16-bit MD5 encryption
echo "";
echo MD5 ("admin"); 32-bit MD5 encryption
?>
The 16-bit MD5 encryption uses the SUBSTR function to intercept the characters to be implemented ....
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