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資源簡介

rsa方式文件加密(java版); 針對公鑰私鑰都有范例; zip加密壓縮和解壓;

資源截圖

代碼片段和文件信息

package?cn.quickbundle.tools.support.encrypt;

import?java.io.File;
import?java.io.FileInputStream;
import?java.io.FileOutputStream;
import?java.io.objectInputStream;
import?java.io.objectOutputStream;
import?java.security.Key;
import?java.security.KeyPair;
import?java.security.KeyPairGenerator;
import?java.security.PrivateKey;
import?java.security.PublicKey;
import?java.security.SecureRandom;
import?java.util.UUID;
import?java.util.zip.ZipEntry;
import?java.util.zip.ZipInputStream;
import?java.util.zip.ZipOutputStream;

import?javax.crypto.Cipher;

/**
?*?對文件壓縮加密/解密解壓縮?對象類
?*?RSA壓縮加密/解壓縮解密
?*?
?*/
public?class?ZipEncrypt_rsa?{
private?static?PrivateKey?privateKey;

private?static?PublicKey?publicKey;

private?static?void?directoryZip(ZipOutputStream?out?File?f?String?base)
throws?Exception?{
//?如果傳入的是目錄
if?(f.isDirectory())?{
File[]?fl?=?f.listFiles();
//?創(chuàng)建壓縮的子目錄
out.putNextEntry(new?ZipEntry(base?+?“/“));
if?(base.length()?==?0)?{
base?=?““;
}?else?{
base?=?base?+?“/“;
}
for?(int?i?=?0;?i? directoryZip(out?fl[i]?base?+?fl[i].getName());
}
}?else?{
//?把壓縮文件加入rar中
out.putNextEntry(new?ZipEntry(base));
FileInputStream?in?=?new?FileInputStream(f);
byte[]?bb?=?new?byte[2048];
int?aa?=?0;
while?((aa?=?in.read(bb))?!=?-1)?{
out.write(bb?0?aa);
}
in.close();
}
}

/**
?*?壓縮文件
?*?
?*?@param?zos
?*?@param?file
?*?@throws?Exception
?*/
private?static?void?fileZip(ZipOutputStream?zos?File?file)
throws?Exception?{
if?(file.isFile())?{
zos.putNextEntry(new?ZipEntry(file.getName()));
FileInputStream?fis?=?new?FileInputStream(file);
byte[]?bb?=?new?byte[2048];
int?aa?=?0;
while?((aa?=?fis.read(bb))?!=?-1)?{
zos.write(bb?0?aa);
}
fis.close();
//System.out.println(file.getName());
}?else?{
directoryZip(zos?file?““);
}
}

/**
?*?解壓縮文件
?*?
?*?@param?zis
?*?@param?file
?*?@throws?Exception
?*/
private?static?void?fileUnZip(ZipInputStream?zis?File?file)
throws?Exception?{
ZipEntry?zip?=?zis.getNextEntry();
if?(zip?==?null)
return;
String?name?=?zip.getName();
File?f?=?new?File(file.getAbsolutePath()?+?“/“?+?name);
if?(zip.isDirectory())?{
f.mkdirs();
fileUnZip(zis?file);
}?else?{
f.createNewFile();
FileOutputStream?fos?=?new?FileOutputStream(f);
byte?b[]?=?new?byte[2048];
int?aa?=?0;
while?((aa?=?zis.read(b))?!=?-1)?{
fos.write(b?0?aa);
}
fos.close();
fileUnZip(zis?file);
}
}

/**
?*?對directory目錄下的文件壓縮,保存為指定的文件zipFile
?*?
?*?@param?directory
?*?@param?zipFile
?*/
private?static?void?zip(String?directory?String?zipFile)?{
try?{
ZipOutputStream?zos?=?new?ZipOutputStream(new?FileOutputStream(
zipFile));
fileZip(zos?new?File(directory));
zos.close();
}?catch?(Exception?e)?{
e.printStackTrace();

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