asymmetric encryption example

Simple sha1 encryption function example implemented by PHP and phpsha1 encryption example This example describes the sha1 encryption function implemented by PHP. We will share this with you for your reference. The details are as f

Complete example of php aes encryption algorithm, phpaes Encryption Algorithm This example describes the AES Encryption Algorithm of PHP. We will share this with you for your reference. The details are as follows: PS: if you are interested in

] ) Algorithm Salt length CRYPT_STD_DES 2-character (default) CRYPT_EXT_DES 9-character CRYPT_MD5 12-character (starting with $1 $) CRYPT_BLOWFISH 16-character (starting with $2 $) Here we want to explain: By default, PHP uses one or two character DES interference strings. if the system uses MD5, it uses 12 characters, you can use the CRYPT_SALT_LENGTH variable to view the length of the currently used interference string! Crypt (

The example of this paper describes the MD5 encryption and DES encryption and decryption algorithm classes implemented by ASP.net. Share to everyone for your reference, specific as follows: #region MD5 Algorithm Public string MD5 (string str, int code) { if (code = = 32)//32-bit encryption {return SYSTEM.WEB.S

symmetric keysEncryptbypassphrase () and Decryptbypassphrase ()-Creates a symmetric key using the password field to encrypt and decrypt dataNote: Data that is encrypted and decrypted must be of type varbinary**/ --Take EncryptByKey as an example, others are very similar --encryption and decryption of the * * # IDN CREATE TABLE TB (IDN int,name varchar); INSERT into TB values (123456789, ' BigBr

; CHARSTR[]=NEWCHAR[J*2]; intk=0; for (inti=0;iByteb=md[i]; SYSTEM.OUT.PRINTLN ((int) b); Double-byte encryption with no number (int) b str[k++]=hexdigits[b>>40xf]; str[k++]=hexdigits[b0xf]; } Returnnewstring (str); }catch (Exceptione) {returnnull;} } Test Publicstaticvoidmain (String[]args) { System.out.println ("Caidao MD5 encrypted: \ n" +test_md5.) MD5 ("Caidao")); System.out.println ("http://www.jb51.net/MD5 encrypted: \ n" +test_m

Example of the RSA encryption and decryption algorithm implemented in Java, rsa encryption and decryption This example describes the RSA encryption and decryption algorithm implemented in Java. We will share this with you for your reference. The details are as follows: Impor

This article mainly introduces the classic encryption method of discuz content in php encryption, and analyzes the usage skills of discuz encryption in combination with the specific instance form, which has some reference value, for more information about how to encrypt discuz in php, see the following example. We will

Complete example of base64 encryption and decryption implemented by JS, and jsbase64 encryption and decryption This article describes the base64 encryption and decryption implemented by JS. We will share this with you for your reference. The details are as follows: Complete code: For more information about base64

Recently I used to encrypt text content, so I checked the common encryption algorithms: Des (Data Encryption Standard): symmetric algorithm, Data Encryption Standard, fast, suitable for encrypting a large amount of data;3DES (Triple DES): It is a symmetric algorithm based on Des. it encrypts a piece of data three times with three different keys, with higher stren

First, MD5 encryption Direct dry, here is an example of a login page: The main thing is to remember to use MD5 when the time is right, so the password is stored in the database. Mysql> SELECT * from user; +----+----------+----------------------------------+ | id | username | password | +----+----------+----------------------------------+ | 1 | 123 | d41d8cd98f00b204e9800998ecf8427e

the specified digest is calculated by the corresponding digest.Representatives: SHA1 of the National Institute of Standards and Technology and MD5 proposed by Ronald Rivest of the Massachusetts Institute of Technology 1.3. Diffie-Hellman Key consistency ProtocolThe key consistency protocol is an idea proposed by Diffie and Hellman, the founders of the public key cryptography system. Prerequisites: two users are allowed to exchange information on the public media to generate a "consistent" and s

aesdemo.php: Example Copy Code code as follows: Require_once ('./aes.php '); $aes = new Aes (); $aes = new Aes (TRUE);//To store the encrypted string in hexadecimal $aes = new Aes (true,true);//With debug information and encrypted string stored in hexadecimal $key = "This is a byte key";//Key $keys = $aes->makekey ($key); $encode = "123456";//Encrypted string $CT = $aes->encryptstring ($encode, $keys); echo "encode ="

Method One, fixing a value, such as MD5 (' www.111cn.net '), and then validating the generated characters at the URL or post pass Method Two, a slightly more complex point of the two sides agreed to generate a good format The following example www.111cn.net simple explanation of PHP Interface Development encryption Technology: If app wants to request a list of users, the API is "Index.php?module=useraction=

Definition and usage example of AES Encryption Class implemented by php, aes example This example describes the definition and usage of AES encryption implemented by php. We will share this with you for your reference. The details are as follows: CryptAES. class. php file:

Recently used to encrypt the text content, and then looked at the usual encryption algorithm:DES (Data Encryption Standard): symmetric algorithm, data encryption standards, fast, suitable for encrypting large amounts of data;3DES (Triple des): is based on des symmetric algorithm, a piece of data with three different keys for three times

The students who have read this article are happy, at that time in doing RSA encryption and signature when the information on the Internet is simply not too old, after the finish is really unbearable, this article I will explain how iOS implementation of RSA encryption and signature, and full synchronization with Java, this is my second blog, If there are any deficiencies also please advise. What is RSA?

of PHP contains the Libmcrypt.dll file, so we only use the PHP configuration file in this line: Extension=php_ Mcrypt.dll the semicolon in front of you, and then restart the server to use the extension library.Supported Algorithms and encryption modesThe MCrypt library supports more than 20 encryption algorithms and 8 encryption modes, and the [1]

Import java. Io. fileinputstream; Import java. Security. keystore;Import java. Security. privatekey;Import java. Security. publickey;Import java. Security. cert. Certificate;Import java. Security. cert. certificatefactory; Import javax. crypto. cipher; // Example of public key encryption and Private Key decryptionProgramPublic Class {Public static void main (string [] ARGs) throws exception { // P

Example of AES encryption and decryption in php. AesDemo. php: for example, copy the code as follows :? Phprequire_once (. AES. php); $ aesnewAES (true); store the encrypted string in hexadecimal format. aesDemo. php: Example, The code is as follows: Require_once ('./AES. php ');// $ Aes = new AES ();$ Aes = new A