dlp encryption

PHP uses OpenSSL for RSA encryption, if the plaintext to be encrypted is too long error, workaround: Encrypt the time 117 characters to encrypt once, and then all the cipher stitching into a cipher text, the decryption time needs 128 characters to decrypt, and then splicing into data.Encryption:/** * Encryption * @param $originalData * @return string|void * //*function Encrypt ($originalD

The encryption algorithm is as follows: Copy CodeThe code is as follows: function Encrypt ($data, $key) { $key = MD5 ($key); $x = 0; $len = strlen ($data); $l = strlen ($key); for ($i = 0; $i { if ($x = = $l) { $x = 0; } $char. = $key {$x}; $x + +; } for ($i = 0; $i { $str. = Chr (Ord ($data {$i}) + (Ord ($char {$i}))% 256); } Return Base64_encode ($STR); } The decryption algorithm is as follows:Copy the Code code as follows:function Decrypt ($data

PHP commonly used hash encryption function, Phphash encryption In this paper, we describe the commonly used hash encryption function in PHP. Share to everyone for your reference. The specific analysis is as follows: Copy the Code code as follows: $hash _list=hash_algos (); Returns the list of registered hash rules Print_r ($hash _list); Show results Create a fil

PHP string encryption and decryption function, php string encryption and decryption /*************************************** * ***************************** Function Name: encrypt function: encryption and decryption string usage: encryption: encrypt ('str', 'E', 'nowamagic '); decryption: encrypt ('encrypted string ',

Tutorial on encryption folder and encryption folder Sometimes we want to keep a little bit of privacy in our computer, and we want to set a password for some files. We only need to enter a password for access, just like in our QQ space album, many of my friends like to set a password for their album and only tell them to visit. How can I set a password for folders on our computer? This article will share

PHP implementation of the QQ space G_TK encryption algorithm, G_TK encryption algorithm This paper introduces the implementation of PHP QQ space G_TK encryption algorithm. Share to everyone for your reference. Specific as follows: //G_TK calculates function getgtk ($skey) {$hash = 5381; for ($i =0; $i Hopefully this article will help you with your PHP p

PHP implementation of RSA encryption class instance, PHPRSA encryption instance In this paper, we describe the RSA encryption class implemented by PHP. Share to everyone for your reference. The specific analysis is as follows: Signing, checking, asymmetric, and decrypting with OpenSSL is required to be used with the files of the certificates of the "." (Crt and

PHP implementation of cookie encryption method, Phpcookie encryption In this paper, we explain how PHP implements cookie encryption. Share to everyone for your reference. The implementation method is as follows: Copy CodeThe code is as follows: Class Cookie{/*** Decrypt a cookie that has already been encrypted** @param string $encryptedText* @return String*/priv

Problem Description:Des encryption is used recently and is consistent with the results of Java's cipher class encryption. The cliper of Java has not been studied, but in work cipher generates a string based on the Des/cbc/pkcs5padding encryption method.In comparison, this string is formatted directly with the NSData generated by OC

(InvalidKeyException e) {throw new RuntimeException (e);catch (Illegalblocksizeexception e) {throw new RuntimeException (e);catch (Badpaddingexception e) {throw new RuntimeException (e);}}/*** Decryption of data by incoming RSA ciphertext and private key* * * * */public static string Rsadeencoding (String Sec,privatekey privkey) {try {Cipher CIP = cipher.getinstance ("RSA");Cip.init (CIP. Decrypt_mode, Privkey);byte[] by = Base64decoderstream.decode (Sec.getbytes ());Return a new String (cip.do

e10adc3949ba59abbe56e057f20f883e But this is still not safe, enter http://www.cmd5.com/encrypted ciphertext after decryption can get plaintext password For example, the database has more than one password clear text is 123456, the ciphertext generated by MD5 encryption is identical, so that others can be decrypted to obtain the same password In response to the above problems, we will add salt treatment. That is, at the time of user registra

How to implement RSA encryption and ASP. netrsa encryption in asp. Net In our practical use, encryption is an important means to ensure data security. In the past, MD5 and SHA1 algorithms were used for data encryption when ASP was used. Although these two algorithms are fast and effective, they cannot be used to revers

Practical PHP shared with public key encryption class (different encryption results every time), php encrypted WEB interaction security has always been the primary solution for every major website. The PHP Encryption Class introduced in this article is very practical. It has a public key. This is the biggest highlight and cannot be decrypted without a public key,

Share an encryption algorithm and an encryption algorithm What is encryption? Can I eat it?We will share with you today that BASE64, MD5, and AES algorithms are implemented together. However, after encryption, the size will increase and he cannot eat them.I. Overview The encryption