Secure file handling with JAVA

For reading EWU (External Editing Work Unit) files and creating ERU (External Editing Response Unit) files there are the vendor-specific libraries.

Each vendor gets his own library for his Trusted Across Integration Solution which contains the secret encryption keys for reading and writing the files.

Across Java vendor library is based on Java-COM bridge library named Jacob. So it requires also Across COM component for vendors.

Requirements

• Across COM component for vendors
• Java runtime 1.5 or higher

Distribution

The distribution package contains Across Java vendor library and Jacob library components: across.vendor-bin

In addition you will receive your individual C# vendor assembly.

Parameters and Usage

Add the following parameters to Java virtual machine:

Usage

import java.util.Date;import across.externalprocessing.vendor.AcrossInputStream;import across.externalprocessing.vendor.AcrossOutputStream;publicclass RunAcross {public RunAcross(){}/*** Runs the Across connect sample.*@param args 2 parameters are required:*0- name of the input file.*1- name of the output file.    */publicstaticvoid main(String[] args){// Create Across input stream.
        AcrossInputStream in =new AcrossInputStream(args[0]);// Create Across output stream.
        AcrossOutputStream out =new AcrossOutputStream(args[1]);int count =0;try{// 4k buffer is minimal recommended buffer size.// Small buffer can lead to performance issues.byte[] buffer =newbyte[8192];// Read data from the input stream.int n =-1;while((n = in.read(buffer,0, buffer.length))!=-1){// Increase total read count.
               count += n;// Write data to the output stream.
               out.write(buffer,0, n);}}catch(Exception e){
           e.printStackTrace(System.out);}finally{try{// Close streams.
               in.close();
               out.close();}catch(Exception ex){
              ex.printStackTrace(System.out);}}// Print results.System.out.println(String.format("The %d bytes were read from the stream", count));// Read line to pause before exit.System.console().readLine();}}