sophos encryption

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PHP encryption algorithm for the realization of reversible encryption algorithm and decryption sharing _php instance

The encryption algorithm is as follows: Copy Code code 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 Code code as fol

"Java" AES encryption and decryption | And the use of Base64 _ encryption and decryption

AES encryption and decryption algorithm, using BASE64 to do transcoding and auxiliary encryption: package Com.wintv.common;Import Javax.crypto.Cipher;Import Javax.crypto.spec.IvParameterSpec;Import Javax.crypto.spec.SecretKeySpec;Import Sun.misc.BASE64Decoder;Import Sun.misc.BASE64Encoder;/** ****************************************************************************** AES Plus decryption algorithm** @auth

Data encryption with C # (i)--Symmetric encryption algorithm

Encryption | data | algorithm using C # Data encryption (i)--Symmetric encryption algorithm The following is about the symmetric encryption algorithm of C # implementation code, you can change the different algorithm according to the need, the article takes Rijndael algorithm for example: Using System; Using Syste

Asymmetric encryption, SHA-1 encryption, Ras algorithm, Digital Signature

Digital signatures are common: Before learning about digital signatures, you must first understand the SHA-1 digest and RSA encryption algorithm. Then, learn more about digital signatures.SHA-1 SHA-1 (secure hash algorithm) is Data encryption algorithm.The idea of this algorithm is to receive a piece of plain text, and then convert it into a section (usually smaller) ciphertext in an irreversible way, it ca

Simple implementation of RSA encryption for Android data encryption _android

Recently accidentally and colleagues to exchange data security transmission problems, think of their own used RSA asymmetric encryption algorithm, idle down to sum up. What is RSA encryption? RSA algorithm is the most popular public key cryptography algorithm, using the length can change the key. RSA is the first algorithm that can be used both for data encryption

Data Encryption 4: email client encryption

Email client encryption: 1. Foxmail Foxmail is often used by everyone. Its convenient template-based input and simple multi-account management make it stand out among many mail client software, which is recognized by everyone. Foxmail introduces an access password function in Multi-account management, that is, it allows multiple users to use e-mails in one computer, and accounts are differentiated by access passwords, to achieve safe access. To preven

Base64 for Information Encryption and base64 for encryption

Base64 for Information Encryption and base64 for encryption Base64 is the simplest and simplest form of encryption. It is often used and recorded for further understanding. Jdk format: // Obtain the keyBase64Encoder encoder = new Base64Encoder ();// Encrypted String encoder_jdk = encoder. encode (src. getBytes (); System. out. println ("encoder:" + encoder );// D

Java uses Apache commons codec for MD5 encryption, BASE64 encryption and decryption, and executes system commands, commonsbase64

Java uses Apache commons codec for MD5 encryption, BASE64 encryption and decryption, and executes system commands, commonsbase64 Before writing the code, let's first introduce the two packages we will use; Commons-codec-1.10.jarTool packages used to process common encoding methods in the Commons project, such as DES, SHA1, MD5, Base64, URL, and Soundx. Commons-exec-1.3.jarApache Commons Exec is a Java proje

SHA1 encryption summary, sha1 Encryption

SHA1 encryption summary, sha1 Encryption Public class Sha1Util{/// /// SHA1 encryption, returns an uppercase string/// /// /// Public static string SHA1 (string content){Return SHA1 (content, Encoding. UTF8 );}/// /// SHA1 encryption, returns an uppercase string/// /// /// /// Public static string SHA1 (string content,

PHP rsa encryption and decryption method, phprsa encryption and decryption

PHP rsa encryption and decryption method, phprsa encryption and decryption When the php server interacts with the client and provides open APIs, it usually needs to encrypt sensitive part of api data transmission. At this time, rsa asymmetric encryption can be used, the following example shows how to use php to encrypt and decrypt data. 1. The first step of

Encryption using the Crypt () function-php encryption technology

The crypt () function can complete one-way encryption functions. String crypt (String str [, string salt]); STR: is a string that needs to be encrypted; salt: The interference string used for encryption. If the salt is omitted, a disturbance string is randomly generated. The crypt () function supports 4 algorithms and lengths: ________________________________________________ Algorithms | Salt length Crypt

MD5 Encryption and DZ encryption

1.MD5 Encryption:Java code Public static string Md64encode (String Password) { String newpassword = null; Try { MessageDigest MD5 = messagedigest.getinstance ("MD5"); Base64encoder base64en = new base64encoder (); NewPassword = Base64en.encode (Md5.digest (Password.getbytes ())); System.out.println ("after encryption:"+newpassword); } catch (nosuchalgorithmexception e) { //TODO auto-generated catch block E.printstacktr

MD5 encryption and salt-adding encryption

This is MD5 encryption.-(nsstring *) Md5hash {Const char *cstr = [self utf8string]; unsigned char result[]; cc_md5(cStr, strlen(cStr), result); nsstring * string= [nsstring stringwithformat: @ "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7], result[8], result[9], result[,result[], Result[], result[[] , result[], re

Encryption and decryption, PHP integrated encryption. Help me first

Encryption and decryption, PHP integrated encryption. Experts Help me to have a program with a piece of encrypted code. I am too curious to know what is written in it. I still use encryption. You can ask competent predecessors to help decrypt the data. Encrypted Code: PHPcode lt ;? Php $ O00OO0 = urldecode ( quot; % 6E1% 7A % 62% 2F % 6D % decryption, PHP integr

MD5 encryption of data encryption

MD5 is a secure hashing algorithm with two features:1, enter two different plaintext (a piece of raw digital information) will not get the same output value2, according to the output value, can not get the original plaintext, that is, the process is irreversibleSo to decrypt the MD5 there is no ready-made algorithm, can only use the poor lifting method, the possible clear text, with the MD5 algorithm hash, the resulting hash value and the original data form a one-on mapping table, and then in th

PHP server-side encryption + Delphi client-side Encryption

Document directory Encryption algorithms Hash Algorithms Http://www.cityinthesky.co.uk/delphi.html Delphi I 've been using Delphi for quite a long time now, from version 1 on Windows 3.11! I intend to release any interesting things that I develop as open source programs. I may in future put some maths related programs here but until then the only thing of note is my...Delphi Cryptography Package DCPcrypt is an open source library of cryptogra

C/C ++ string encryption: printable text encryption; string printing text

C/C ++ string encryption: printable text encryption; string printing text Today, we developed a text encryption algorithm. Because it is based on the algorithm's confidentiality and has no key, it can only meet the security requirements, As follows: Article 1201411210H0g // 60609.820Ciphertext 1{* Article 2201411210ab1234/32d fdsCiphertext 2S "4 HVgy) 9J [o} 0 E

C # string DES encryption/decryption and MD5 encryption)

Using system; Using system. IO; Using system. Windows. forms; Using system. Collections. Generic; Using system. text; Using system. Security. cryptography; Namespace mydes{/// /// DES encryption/decryption and MD5 Encryption/// Public class my_des{# Region private attributes /// /// MD5 encrypted string/// Private string md5str = NULL;/// /// DES encrypted string/// Private string encryptstr = NULL;

C # des encryption does not match with php encryption ~ Please advise

C # des encryption does not match with php encryption ~ Please advise C # code preview String beforeEncode = "usercode = 18516094544 serviceid = 140114021990 cporderid = partner operationtype = 3 channelid = 00012243 version = 1.0 time = 20140923134312"; string key = "Subs123 "; var encodebyte = WowEncryptDES (Encoding. UTF8.GetBytes (beforeEncode), key); string strEncode = Convert. toBase64String (

PHP AES encryption corresponds to Java sha1prng mode encryption

When doing docking, the service provider AES encryption through the SHA1PRNG algorithm (as long as the password, each generation of the array is the same, so can be used to do encryption and decryption key) for another time encryption, engaged for several hours, directly see the corresponding code bar, you can refer to, Java-only encrypted sourcePrivate Static by

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