PHP encryption function-md5 () function encryption what is MD5 () function? MD5 () function is the MD5 hash value of the calculator string, using MD5 algorithm, the full name of MD5 is Message-DigestAlgorithm5, it is used to calculate data
Use the MD5 conversion algorithm to prevent brute force cracking. MD5 is the most common cryptographic algorithm in Web applications. Because MD5 is irreversible, the ciphertext obtained after MD5 calculation cannot be obtained through reverse
MD5 is the most common cryptographic algorithm in Web applications. Because MD5 is irreversible, the ciphertext obtained after MD5 calculation cannot be obtained through reverse algorithms.
Looking back at the original intention of using MD5 to
After my tests, the md5 function in PHP does increase in function time as the length of the encrypted string increases. in the practical application of PHP, do not worry about the efficiency and performance of md5 encryption with less than 100
The scenario for generating a unique ID is very common, such as temporary cache file names, temporary variables, temporary security codes, and so on, and the uniqid () function generates a unique ID based on the current time in microseconds. Because
Conversion | algorithm
MD5 is the most commonly used cryptographic encryption algorithm in Web applications. Since the MD5 is irreversible, the ciphertext after MD5 calculation can not get the original text through the reverse algorithm.
The
PHP combined with MD5 implementation of encryption and decryption method, PHP combined with MD5 encryption decryption
This paper describes the encryption and decryption method implemented by PHP combined with MD5. Share to everyone for your
This article describes how to obtain the MD5 value of a file in PHP and determine whether the file has been modified. MessageDigestAlgorithmMD5 (the fifth version of the message digest algorithm in Chinese) it is a hash function widely used in the
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