问题描述
我需要将下面的Java脚本代码转换为DLL链接到Vb.Net应用程序可以帮助我。
package sage300 ;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java。 io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto。 SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
public class EncryptTTUM {
public static void main（String [] args）{
try {
String key =balaji23; // DES需要至少8个字符
if（args.length == 1）
{
String fileName = args [ 0];
System.out.println（加密+ fileName）;
字符串encFileName = args [0] +。enc;
FileInputStream fis = new FileInputStream（fileName）;
FileOutputStream fos = new FileOutputStream（encFileName）;
加密（密钥，fis，fos）;
System.out.println（加密文件名+ encFileName）;
}
其他
{
System.out.println（无效的命令行参数）;
}
} catch（Throwable e）{
e.printStackTrace（）;
}
}
public static void encrypt （String key，InputStream is，OutputStream os）抛出Throwable {
encryptOrDecrypt（key，Cipher.ENCRYPT_MODE，is，os）;
}
public static void decrypt（String key，InputStream is，OutputStream os）抛出Throwable {
encryptOrDecrypt（key，Cipher.DECRYPT_MODE，is，os）;
}
public static void encryptOrDecrypt（String key，int mode，InputStream is，OutputStream os）抛出Throwable {
DESKeySpec dks = new DESKeySpec（key.getBytes（））;
SecretKeyFactory skf = SecretKeyFactory.getInstance（DES）;
Sec retKey desKey = skf.generateSecret（dks）;
Cipher cipher = Cipher.getInstance（DES）; //用于SunJCE的DES / ECB / PKCS5Padding
if（mode == Cipher.ENCRYPT_MODE）{
cipher.init（Cipher.ENCRYPT_MODE） ，desKey）;
CipherInputStream cis = new CipherInputStream（is，cipher）;
doCopy（cis，os）;
}否则如果（ mode == Cipher.DECRYPT_MODE）{
cipher.init（Cipher.DECRYPT_MODE，desKey）;
CipherOutputStream cos = new CipherOutputStream（os，cipher）;
doCopy（是，cos）;
}
}
public static void doCopy（ InputStream是，OutputStream os）抛出IOException {
byte [] bytes = new byte [64];
int numBytes;
while（（ numBytes = is.read（bytes））！= -1）{
os.write（bytes，0，numBytes）;
}
os.flush（）;
os.close（）;
is.close（）;
}
}
我的尝试：
我尝试过使用Code在WIndows中转换和Jsc消除了编译给出的错误，
我在.Net中使用Crypto尝试了DES。转换后有转换的差异，转换后。 Net和它不会从Java中提取，所以我需要上面的代码转换为DLL插件作为我的VB项目的引用。
I need the below Code of java Script to be Converted to a DLL to be linked to a Vb.Net Application Can Some One Help me.
package sage300;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.crypto.Cipher;
import javax.crypto.CipherInputStream;
import javax.crypto.CipherOutputStream;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
public class EncryptTTUM {
public static void main(String[] args) {
try {
String key = "balaji23"; // needs to be at least 8 characters for DES
if(args.length == 1)
{
String fileName = args[0];
System.out.println("Encrypting "+fileName);
String encFileName = args[0]+".enc";
FileInputStream fis = new FileInputStream(fileName);
FileOutputStream fos = new FileOutputStream(encFileName);
encrypt(key, fis, fos);
System.out.println("Encrypted File Name "+encFileName);
}
else
{
System.out.println("Invalid no of Command Line Arguments");
}
} catch (Throwable e) {
e.printStackTrace();
}
}
public static void encrypt(String key, InputStream is, OutputStream os) throws Throwable {
encryptOrDecrypt(key, Cipher.ENCRYPT_MODE, is, os);
}
public static void decrypt(String key, InputStream is, OutputStream os) throws Throwable {
encryptOrDecrypt(key, Cipher.DECRYPT_MODE, is, os);
}
public static void encryptOrDecrypt(String key, int mode, InputStream is, OutputStream os) throws Throwable {
DESKeySpec dks = new DESKeySpec(key.getBytes());
SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
SecretKey desKey = skf.generateSecret(dks);
Cipher cipher = Cipher.getInstance("DES"); // DES/ECB/PKCS5Padding for SunJCE
if (mode == Cipher.ENCRYPT_MODE) {
cipher.init(Cipher.ENCRYPT_MODE, desKey);
CipherInputStream cis = new CipherInputStream(is, cipher);
doCopy(cis, os);
} else if (mode == Cipher.DECRYPT_MODE) {
cipher.init(Cipher.DECRYPT_MODE, desKey);
CipherOutputStream cos = new CipherOutputStream(os, cipher);
doCopy(is, cos);
}
}
public static void doCopy(InputStream is, OutputStream os) throws IOException {
byte[] bytes = new byte[64];
int numBytes;
while ((numBytes = is.read(bytes)) != -1) {
os.write(bytes, 0, numBytes);
}
os.flush();
os.close();
is.close();
}
}
What I have tried:
I have tried using Code Convert and Jsc in WIndows which drops out the Compilation Giving Errors ,
I tried the DES using Crypto in .Net Which has difference in the convertion, Once you Convert from .Net and it Wont Extract from Java, So i need this above Code to Convert to a DLL to plug as a reference to my VB project.
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