how to md5 decrypt in php

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

In windows, use c to write php extensions (encrypt and decrypt the php source code). first try helloworld. Download the php source code package. the ext directory contains two important files: ext_skel and ext_skel_win32.php. download cygwin. with

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

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

Summary: Cryptography is a technical science that studies the compilation of passwords (encryption: encode) and deciphering passwords (decryption: decode. The objective law of password change is studied. it is used to compile passwords to keep

CommentsSummary: cryptography is a technical science that studies the compilation of passwords (encryption: encode) and deciphering passwords (decryption: decode. The objective law of password change is studied. It is used to compile passwords to

PHP des encryption:$cipher _list= Mcrypt_list_algorithms ();//MCrypt List of supported cryptographic algorithms$mode _list= Mcrypt_list_modes ();//MCrypt supported encryption mode list//Print_r ($cipher _list);//Print_r ($mode _list);functionEncrypt$

We know that if the password is hashed directly, then the hacker can get a hash value by obtaining this password, and then by checking the hash value dictionary (for example, MD5 password cracking site), the password of a user.Adding salt can solve

Transferred from: http://blog.csdn.net/blade2001/article/details/6341078We know that if the password is hashed directly, then the hacker can get a hash value by obtaining this password, and then by checking the hash value dictionary (for example, MD5

For users of e-commerce websites, the most important thing is the security of accounts and passwords. if the account and password are not encrypted, it will greatly increase security risks and never allow criminals to take advantage of them,