des encryption example

This need to use Crypto.cipher this plug-in to achieve, after the reference only need to write the following code to1 fromCrypto.cipherImportDES2 3 classMydescrypt:4 5Key = Chr (one) +CHR (one) +chr (one) +chr (one) +chr (one) +chr (one) +chr (one) +CHR (11)6IV = CHR (+CHR) +CHR (22) +CHR (+) +CHR (+CHR) +CHR (+) +CHR)7 8 def __init__(self,key="', iv="'):9 ifLen (key) >0:TenSelf.key =Key One ifLen (iv) >0: ASELF.IV =IV - - defEcrypt (self,ecrypttext): th

]+= (*out++) *times;times/=2;}}}void Encrypt0 (unsigned char *text,unsigned char *mtext)/*unsigned char *text,*mtext;*/{unsigned char ll[64],rr[64],ll[64],rr[64];unsigned char tmp[64];unsigned char i,j;Ip_des (TEXT,LL,RR);for (i=1;i{F_des (I,LL,RR,LL,RR);for (j=0;j{LL[J]=LL[J];RR[J]=RR[J];}}_ip_des (TMP,RR,LL);COMPRESS0 (Tmp,mtext);}void Discrypt0 (unsigned char *mtext,unsigned char *text)/*unsigned char *text,*mtext;*/{unsigned char ll[64],rr[64],ll[64],rr[64];unsigned char tmp[64];unsigned cha

Encryption: When called: Encrypt_des16 ("2AF349243535BCD3", "1111111111111111"); public static string Encrypt_des16 (String str_in_data, String str_des_key)//data is hexadecimal {try { byte[] Shuju = new Byte[8]; Byte[] keys = new BYTE[8]; for (int i = 0; i Decryption: Called When: Encrypt_des16 ("C47ec89b0a247a47", "1111111111111111"); DES decryption public static string Decry

/** * PHP des encryption and decryption * by http://bbs.it-home.org */ function Do_mencrypt ($input, $key) { $input = Str_replace ("" N "," ", $input); $input = Str_replace ("" T "," ", $input); $input = Str_replace ("R", "", $input); $key = substr (MD5 ($key), 0, 24); $TD = Mcrypt_module_open (' TripleDES ', ' ', ' ECB ', '); $iv = Mcrypt_create_iv (Mc

Indicators: Computational speed, security, resource consumptionSymmetric encryption algorithm (with the same decryption key):Asymmetric algorithms (encryption key and decryption key are different):Hash algorithm comparison:Comparison of symmetric and asymmetric algorithms:algorithm selection (from performance and security synthesis) symmetric encryption: AES (128

Import BinasciiFrom PydesImport desCbc, PAD_PKCS5Import UUIDImport time# pip Install-i https://pypi.tuna.tsinghua.edu.cn/simple pydesSecret_key =' 19771011 '# Http://blog.csdn.net/lihao21/article/details/78557461?locationNum=11fps=1DefDes_encrypt (s):IV = Secret_keyK = des (Secret_keyCbc, IV,Pad=None,PADMODE=PAD_PKCS5)En = K.encrypt (s,PADMODE=PAD_PKCS5) return Binascii.b2a_hex (en)DefDes_descrypt (s):IV = Secret_keyK =

// // des encryption// /// //// Public static string Encode (String str, string key) {Try {DESCryptoServiceProvider Provider = new DESCryptoServiceProvider ();provider. Key = Encoding.ASCII.GetBytes (key. Substring (0, 8));PROVIDER.IV = Encoding.ASCII.GetBytes (key. Substring (0, 8));byte[] bytes = encoding.getencoding ("GB2312"). GetBytes (str);MemoryStream ms = new MemoryStream ();CryptoStream cs = new Cr

Encryption public string Desencrypt (string strText, String strencrkey) { byte[] bykey=null; Byte[] iv= {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF}; Try { Bykey = System.Text.Encoding.UTF8.GetBytes (strencrkey.substring (0,8)); DESCryptoServiceProvider des = new DESCryptoServiceProvider (); Byte[] Inputbytearray =system.text.encoding.utf8.getbytes (strText); MemoryStream m

DES encryption and decryption based on PHP: Function des_encrypt ($ str, $ key) {$ block = mcrypt_get_block_size ('Des ', 'ECB'); $ pad = $ block-(strlen ($ str) % $ block); $ str. = str_repeat (chr ($ pad), $ pad); return mcrypt_encrypt (MCRYPT_DES, $ key, $ str, MCRYPT_MODE_ECB );} Des decryption: Function des

This article mainly introduces the JavaScript implementation des decryption encryption process, the need for friends can refer to the following The code is as follows://paul Tero, July 2001nbsp;//http://www.tero.co.uk/des/nbsp;//nbsp;, for//optimised with performance large Cks by Michael Hayworth, November 2001nbsp;//http://www.netdealing.comnbsp;//nbsp;//this

Php implementation of Des encryption algorithm Some data we don't want to be seen by others, and we want to replace it with other strings or numbers, disguised as unrecognized statements.This is only for encryption of one or more data.Now let's take a look at this code. we don't need to introduce a class library. it's a simple implementation:

Based on the analysis in the previous article "Introduction to Real Data Encryption Using DES (analysis)", Java can be used to encrypt strings, however, the legacy problem is that the string cannot be decrypted, because after the encrypted byte array is converted into a string, it will be different from the original byte array, and there will be fewer digits, I don't know why. Isn't a one-to-one conversion

Tags: des HTTP Io ar Java for SP on CTI Package httpvisit. action; import javax. crypto. cipher; import javax. crypto. secretkey; import javax. crypto. secretkeyfactory; import javax. crypto. spec. deskeyspec; import javax. crypto. spec. ivparameterspec; import sun. misc. base64decoder; import sun. misc. base64encoder;/*** @ Author: heweipo * @ Version 1.00 ***/public class descoderutil {Private Static byte [] keys = {1,-1, 1,-1, 1,-1, 1,-1}; Private

Python DES encryption and decryption is what we call the very fast method, pythondes This is implemented using the Crypto. Cipher plug-in. After referencing it, you only need to write the following code: 1 from Crypto.Cipher import DES 2 3 class MyDESCrypt: 4 5 key = chr(11)+chr(11)+chr(11)+chr(11)+chr(11)+chr(11)+chr(11)+chr(11) 6 iv = chr(22)+chr

Written from N long agoCodeI found some previously written encryption and decryption code, which is simply organized into a class. I made a small tool for encryption and decryption to implement MD5 encryption, DES encryption and decryption, and RSA

In Android development or Java Development, some files are often encrypted or decrypted. Below is a method I recently tested to encrypt and decrypt the files using DES. Record it to prevent forgetting it later! The following code is directly pasted and detailed comments are written as follows: Package COM. spring. des; import Java. io. bufferedreader; import Java. io. fileinputstream; import Java. io. filen

Des encryption operations, found in Windows and Linux results are not the same, found that the CreateKey process has this operation, starting from here is not the same. The network query was informed that an int overflow caused the correct under Windows. It is recommended to operate through the GMP extension, but no specific usage is found, please advise Win results: 176881664Lin Results: 75970096214206054

// Default key vector Private Static Byte [] Keys = { 0x12 , 0x34 , 0x56 , 0x78 , 0x90 , 0xab , 0xcd , 0xef }; /// /// DES encrypted string /// /// String to be encrypted /// Encryption key, which must be 8 bits /// The encrypted string is returned successfully. If the encrypted string fai

In the previous article, we used Java to implement the core DES algorithm and provided a simple interface for external use. However, this algorithm is only the core, only 64-bit binary data can be encrypted. Therefore, preprocessing is required for actual use. The so-called preprocessing is to convert the real data, such as strings, data, and other uncertain content into 64-bit binary data groups in each group. Then perform group

Des encryption and decryption in as3 Lazy bones (http://blog.csdn.com/iamlazybone) 1 As3crypto: An as3 open-source project on encryption and decryption Http://code.google.com/p/as3crypto/ 2 Mykeystr = "123456 "; Mykey = new bytearray (); Mykey. writeutfbytes (mykeystr ); Mydes = new primary ey (mykey ); 3 Tmpbytearray = convertstringtobyt