php random md5

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

PHP pseudo random number and true random number detailed, pseudo random number detailed The first thing to declare is that the computer does not produce an absolute random number, and the computer can only produce "pseudo-random numbers". In fact,

PHP pseudo-random number and real random number details. PHP pseudo-random number and real random number details this article mainly introduces PHP pseudo-random number and real random number details, this article first explains the concept of real

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

This article mainly introduces the pseudo random number and the true random number of PHP, this paper first explained the concept of true random number and pseudo random number, and gave a better pseudo-random number than using Mt_rand () function

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

This article mainly introduces PHP's pseudo-random number and real random number details. This article first explains the concepts related to the real random number and pseudo-random number, and gives the comparison using mt_rand () an example code

About Random Number Security 0x00 I talked to my friends about an interesting phenomenon. during the school recruitment interview in the last two years, most of my students did not have any basic cryptographic knowledge, even those with some

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

This article mainly introduces PHP's pseudo-random number and real random number details. This article first explains the concepts related to the real random number and pseudo-random number, and gives the comparison using mt_rand () an example code