Java Encrypt File encryptFile(InputStream in, String dstFile)

Description

encrypt File

License

Open Source License

Declaration

public static void encryptFile(InputStream in, String dstFile) throws Exception 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;

public class Main {
    static final byte[] KEYVALUE = "6^)(9-@=+@j.&6^)(p35@%3%!#O@*GpG0#4S!4S0)$Y%%Y-=+".getBytes();
    static final int BUFFERLEN = 1024;

    public static void encryptFile(InputStream in, String dstFile) throws Exception {
        File file = new File(dstFile);
        if (!file.exists())
            file.createNewFile();//from w  ww  .  ja v  a2  s  .  co m
        FileOutputStream out = new FileOutputStream(file);
        int c, pos, keylen;
        pos = 0;
        keylen = KEYVALUE.length;
        byte buffer[] = new byte[BUFFERLEN];
        while ((c = in.read(buffer)) != -1) {
            for (int i = 0; i < c; i++) {
                buffer[i] ^= KEYVALUE[pos];
                out.write(buffer[i]);
                pos++;
                if (pos == keylen)
                    pos = 0;
            }
        }
        in.close();
        out.close();
    }
}