批量文件加密代码Java 文件加密 java

JAVA文件加密

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VERSION 4.00

Begin VB.Form Form1

Caption = "Sample"

ClientHeight = 705

ClientLeft = 3915

ClientTop = 3315

ClientWidth = 1800

ControlBox = 0 'False

Height = 1110

Left = 3855

LinkTopic = "Form1"

MaxButton = 0 'False

MinButton = 0 'False

ScaleHeight = 705

ScaleWidth = 1800

Top = 2970

Width = 1920

Begin VB.CommandButton Command1

Caption = "Command1"

Height = 495

Left = 240

TabIndex = 0

Top = 120

Width = 1215

End

Attribute VB_Name = "Form1"

Attribute VB_Creatable = False

Attribute VB_Exposed = False

Sub FileEncodeAndDecode(InputFile As String, OutputFile As String, PasswordKey As String)

Dim temp As Single

Dim Char As String * 1

Dim XORMask As Single

Dim temp1 As Integer

Open InputFile For Binary As #1

Open OutputFile For Binary As #2

For x = 1 To Len(PasswordKey)

temp = Asc(Mid$(PasswordKey, x, 1))

For y = 1 To temp

temp1 = Rnd

Next y

' Re-seed to throw off prying eyes

Randomize temp1

Next x

Counter = 0

For z = 1 To FileLen(InputFile)

'Generate random mask

XORMask = Int(Rnd * 256)

'Get the char change it

Get 1, , Char

Char = Chr$((Asc(Char) Xor XORMask))

Put 2, , Char

Counter = Counter + 1

If Counter Len(PasswordKey) Then Counter = 1

' Pull random numbers from the hat

For x = 1 To (Asc(Mid$(PasswordKey, Counter, 1)) * 2)

temp = Rnd

Next x

Next z

Close #1

Close #2

End Sub

Private Sub Command1_Click()

Dim InputFile As String

Dim OutputFile As String

Dim PasswordKey As String

InputFile = InputBox("Enter a filename to encode")

OutputFile = InputBox("Enter the new filename this will become ")

PasswordKey = InputBox("Enter the password (key)")

Call FileEncodeAndDecode(InputFile, OutputFile, PasswordKey)

MsgBox "File written to " + OutputFile

End

End Sub

Private Sub Form_Load()

Command1.Caption = "Code/Decode"

End Sub

Form=enc-dec.frm

Reference=*\G{BEF6E001-A874-101A-8BBA-00AA00300CAB}#2.0#0#D:\WINDOWS\SYSTEM\OLEPRO32.DLL#Standard OLE Types

Reference=*\G{00025E01-0000-0000-C000-000000000046}#3.0#0#D:\PROGRAM FILES\COMMON FILES\MICROSOFT SHARED\DD:\PROGRAM FIL#Microsoft DAO 3.0 Object Library

ProjWinSize=113,438,221,107

ProjWinShow=2

Name="Project1"

HelpContextID="0"

StartMode=0

VersionCompatible32="0"

MajorVer=1

MinorVer=0

RevisionVer=0

AutoIncrementVer=0

ServerSupportFiles=0

VersionCompanyName="Southern Cross Software"

JAVA简单文件加密求JAVA源代码

md5加密：

package com.ncs.pki.util;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class MD5Test {

private static MessageDigest digest = null;

public synchronized static final String hash(String data) {

if (digest == null) {

try {

digest = MessageDigest.getInstance("MD5");

} catch (NoSuchAlgorithmException nsae) {

System.err.println(

"Failed to load the MD5 MessageDigest. "

+ "Jive will be unable to function normally.");

nsae.printStackTrace();

}

// Now, compute hash.

digest.update(data.getBytes());

return encodeHex(digest.digest());

}

public static final String encodeHex(byte[] bytes) {

StringBuffer buf = new StringBuffer(bytes.length * 2);

int i;

for (i = 0; i bytes.length; i++) {

if (((int) bytes[i] 0xff) 0x10) {

buf.append("0");

}

buf.append(Long.toString((int) bytes[i] 0xff, 16));

}

return buf.toString();

}

public static String test(){

return null;

}

/**

* @param args

public static void main(String[] args) {

// TODO Auto-generated method stub

System.out.println(MD5Test.hash("123456"));

}

3des加密：

package com.ncs.pki.util;

import java.security.Key;

import java.security.SecureRandom;

import javax.crypto.Cipher;

import javax.crypto.KeyGenerator;

import sun.misc.BASE64Decoder;

import sun.misc.BASE64Encoder;

public class DesEncrypt {

/**

* 使用DES加密与解密,可对byte[],String类型进行加密与解密密文可使用String,byte[]存储.

* 方法: void getKey(String strKey)从strKey的字条生成一个Key

* String getEncString(String strMing)对strMing进行加密,返回String密文 String

* getDesString(String strMi)对strMin进行解密,返回String明文

*byte[] getEncCode(byte[] byteS)byte[]型的加密 byte[] getDesCode(byte[]

* byteD)byte[]型的解密

Key key;

/**

* 根据参数生成KEY

* @param strKey

public void getKey(String strKey) {

try {

KeyGenerator _generator = KeyGenerator.getInstance("DES");

_generator.init(new SecureRandom(strKey.getBytes()));

this.key = _generator.generateKey();

_generator = null;

} catch (Exception e) {

e.printStackTrace();

}

/**

* 加密String明文输入,String密文输出

* @param strMing

* @return

public String getEncString(String strMing) {

byte[] byteMi = null;

byte[] byteMing = null;

String strMi = "";

BASE64Encoder base64en = new BASE64Encoder();

try {

byteMing = strMing.getBytes("UTF8");

byteMi = this.getEncCode(byteMing);

strMi = base64en.encode(byteMi);

} catch (Exception e) {

e.printStackTrace();

} finally {

base64en = null;

byteMing = null;

byteMi = null;

}

return strMi;

}

/**

* 解密以String密文输入,String明文输出

* @param strMi

* @return

public String getDesString(String strMi) {

BASE64Decoder base64De = new BASE64Decoder();

byte[] byteMing = null;

byte[] byteMi = null;

String strMing = "";

try {

byteMi = base64De.decodeBuffer(strMi);

byteMing = this.getDesCode(byteMi);

strMing = new String(byteMing, "UTF8");

} catch (Exception e) {

e.printStackTrace();

} finally {

base64De = null;

byteMing = null;

byteMi = null;

}

return strMing;

}

/**

* 加密以byte[]明文输入,byte[]密文输出

* @param byteS

* @return

private byte[] getEncCode(byte[] byteS) {

byte[] byteFina = null;

Cipher cipher;

try {

cipher = Cipher.getInstance("DES");

cipher.init(Cipher.ENCRYPT_MODE, key);

byteFina = cipher.doFinal(byteS);

} catch (Exception e) {

e.printStackTrace();

} finally {

cipher = null;

}

return byteFina;

}

/**

* 解密以byte[]密文输入,以byte[]明文输出

* @param byteD

* @return

private byte[] getDesCode(byte[] byteD) {

Cipher cipher;

byte[] byteFina = null;

try {

cipher = Cipher.getInstance("DES");

cipher.init(Cipher.DECRYPT_MODE, key);

byteFina = cipher.doFinal(byteD);

} catch (Exception e) {

e.printStackTrace();

} finally {

cipher = null;

}

return byteFina;

}

public static void main(String[] args) {

System.out.println("des demo");

DesEncrypt des = new DesEncrypt();// 实例化一个对像

des.getKey("MYKEY");// 生成密匙

System.out.println("key=MYKEY");

String strEnc = des.getEncString("111111");// 加密字符串,返回String的密文

System.out.println("密文=" + strEnc);

String strDes = des.getDesString(strEnc);// 把String 类型的密文解密

System.out.println("明文=" + strDes);

}

谁能提供下java中有关加密和解密的代码

public static void main(String[] args) throws Exception {

String data = "itxxz";

System.out.println("字符串：itxxz");

System.err.println("加密："+encrypt(data));

System.err.println("解密："+decrypt(encrypt(data)));

}

运行结果：

由于代码太多，可到 itxxz.com/a/javashili/2014/1217/encrypt_decrypt.html 查看，注释也比较完整，清晰易懂

Java中用Base64编程的文件批量加密解密工具程序代码

/** * BASE64解密 * * @param key * @return * @throws Exception */

public static byte[] decryptBASE64(String key) throws Exception { return (new BASE64Decoder()).decodeBuffer(key); } /** * BASE64加密 * * @param key * @return * @throws Exception */ public static String encryptBASE64(byte[] key) throws Exception { return (new BASE64Encoder()).encodeBuffer(key); }

用java写个文件加密的代码该怎么写

最简单的就一个FOR循环要加密的文件再声明一个字符串遍历要加密的文件和字符串进行位与操作或之类操作

类似这样-

import java.util.Arrays;

public class Test {

public static void main(String[] args) {

String str = "hello";

byte[] strCode = str.getBytes();

System.out.println("原始信息字节码："+Arrays.toString(strCode));

String key = "abcde";

byte[] keyCode = key.getBytes();

System.out.println("密钥字节码："+Arrays.toString(keyCode));

byte[] finallyCode = new byte[strCode.length];

for(int i=0;istr.length();i++){

finallyCode[i] = (byte) (strCode[i] ^ keyCode[i]);

}

System.out.println("加密后的字节码："+Arrays.toString(finallyCode));

System.out.println("加密后的字符串："+new String(finallyCode));

//============解密

for(int i=0;istr.length();i++){

finallyCode[i] = (byte) (finallyCode[i] ^ keyCode[i]);

}

System.out.println("解密后的字节码："+Arrays.toString(finallyCode));

System.out.println("解密后的字符串："+new String(finallyCode));

}

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批量文件加密代码Java 文件加密 java

JAVA文件加密

JAVA简单文件加密 求JAVA源代码

谁能提供下java中有关加密和解密的代码

Java中用Base64编程的文件批量加密解密工具程序代码

用java写个文件加密的代码该怎么写

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JAVA简单文件加密求JAVA源代码