Encryption is often used in daily work. Today I wrote a simple example of using MD5 encryption, and now I paste the source code.
Md5utils class
Package COM. dengsilinming. test; import Java. io. unsupportedencodingexception; import Java. security. messagedigest; import Java. security. nosuchalgorithmexception;/***** @ author dengsilinming * @ date 2012-12-27 am 1
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Using System; Using System. Security. cryptography; Using System. text; Using System. IO; /// /// Example of Using symmetric encryption /// Class Class1{ Static Void Main ( String [] ARGs){Class1 C = New Class1 ();C. startdemo ();} Public Void Startdemo (){ // Establ
This article mainly introduces base64_decode and base64_encode encryption and decryption functions in php. the instance analyzes the specific usage of base64 encryption and decryption functions, which has some practical value, for more information about base64_decode and base64_encode encryption and decryption functions in php, see the following
This article mainly introduces base64_decode and base64_encode encryption and decryption functions in php. the instance analyzes the specific usage of base64 encryption and decryption functions, which has some practical value, for more information about base64_decode and base64_encode encryption and decryption functions in php, see the following
1: A company uses a public telephone to pass data, and the data is a four-bit integer that is encrypted during delivery.The encryption rules are as follows: Each digit is prefixed with 5, and the remainder is replaced with and divided by 10, then the first and fourth bits are exchanged, and the second and third bits are exchanged.Package Cn.zzsxt.lianxi;Import Java.util.Scanner;public class Practice {public static void Main (string[] args) {System.out
This article mainly introduces the RSA encryption/decryption and signature/verification functions implemented under Python, and analyzes the implementation method of RSA encryption and decryption in Python, and the use of signature and verification function, which can be referenced by a friend.
This article describes the RSA encryption/decryption and signature/v
This article mainly introduces the php symmetric encryption algorithm example. if you need a friend, refer to the php symmetric encryption algorithm.
KEY is a previously defined constant.
The code is as follows:
Mcrypt: encrypt ();Mcrypt: decrypt ();
The code is as follows:
Defined ('root') or exit ('Access Denied ');
Class Mcrypt {Public static function enc
This example describes the encryption and decryption algorithm for PHP combined with MD5. Share to everyone for your reference, specific as follows:
The results of the operation are as follows:
Trxmtm8sfb3dghtr2qeuyqoxzmpmn8mo
Cloud-dwelling community www.jb51.net
PS: About encryption and decryption interested friends can also refer to th
This example describes the AES encryption algorithm for PHP. Share to everyone for your reference, specific as follows:
PS: About encryption and decryption interested friends can also refer to the site online tools:
Password Security online detection: Http://tools.jb51.net/password/my_password_safe
High Strength Password Generator:Http://tools.jb51.ne
arbitrarily defined: char key[256]; parameter 3 is the length of the key, Len = strlen (key), void Rc4_init (unsigned char *s, unsigned char *key, unsigned long Len) {int I =0, j = 0, k[256] = {0};uns igned char tmp = 0;for (i=0;iVulnerabilityBecause the RC4 algorithm encryption is the XOR, so, once the sub-key sequence has been duplicated, ciphertext can be cracked. For more information on how to hack XOR encryp
This article mainly introduces the SHA-256 encryption algorithm implemented by Javascript, analyzes the specific steps and related skills of JavaScript to implement SHA-256 encryption in the form of a complete example, A friend can refer to the example of this article describes the Javascript implementation of the SHA-
This article mainly introduces the PHP implementation based on OpenSSL encryption and decryption method, combined with the example form analysis of PHP custom function implementation based on OpenSSL encryption and decryption operations related skills, the need for friends can refer to the next
In this paper, an example
This article mainly introduces the example of php encryption and decryption. For more information, see.
The Code is as follows:
$ Id = "http://www.php.net ";$ Token = encrypt ($ id, 'E', 'php ');Echo 'encryption: '. encrypt ($ id, 'E', 'php ');Echo'';Echo 'decryption: '. encrypt ($ token, 'D', 'php ');
/*************************************** ****************
This article summarizes PHP's common string function. Share to everyone for your reference, as follows:
Nl2br
Function:
RTrim
Function: Clear the blank on the right
Strip_tags
Function: Clear the HTML and PHP tags in the string
Strtolower and Strtoupper
Functions: Converting to uppercase and lowercase
Trim
Function: Remove the leading and trailing spaces
Str_ireplace
function: Replace
Str_repeat
Function: Repeat a string multiple times
Str_replace
Function: Case-sensitive substitution
When using DB2, database security requires us to consider things. This article provides a simple example. In this example, encryption and decryption of passwd are set globally, use the db2 database encryption function encrypt and decrypt_char. For your reference, I hope to enlighten you.
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