Blackberry 6,7 java环境下AES 128加密

经过一年的黑莓开发，总结一些东西，记录遇到过的一些问题。  

这里主要记录跟AES128有关的问题：  黑莓端与java服务器端的相互加密与解密，两端用的都是AES/ECB/NoPadding

黑莓端：

import java.io.ByteArrayInputStream;import java.io.IOException;import net.rim.device.api.crypto.AESDecryptorEngine;import net.rim.device.api.crypto.AESEncryptorEngine;import net.rim.device.api.crypto.AESKey;import net.rim.device.api.crypto.BlockDecryptor;import net.rim.device.api.crypto.BlockEncryptor;import net.rim.device.api.crypto.CryptoTokenException;import net.rim.device.api.crypto.CryptoUnsupportedOperationException;import net.rim.device.api.io.NoCopyByteArrayOutputStream;import net.rim.device.api.util.DataBuffer;/* * encryption and decryption with AES/ECB/NoPadding *  * */public class CryptoUtil {public static byte[] encrypt(String content) throws CryptoTokenException, CryptoUnsupportedOperationException, IOException{//获取密码.String keyStr=getKeyStr();int len=content.length();int cha=0;//如果不是16的倍数就加上qwertyuiopasdfgh@字符串if((cha=len%16)!=0){ for(int i=0;i<16-cha;i++){content+="qwertyuiopasdfgh@";}}byte[] data=content.getBytes("UTF-8");byte[] keyData=keyStr.getBytes();AESKey key=new AESKey(keyData);NoCopyByteArrayOutputStream out=new NoCopyByteArrayOutputStream();AESEncryptorEngine engine=new AESEncryptorEngine(key);//创建加密引擎BlockEncryptor encryptor=new BlockEncryptor(engine, out);//创建BlockEncryptor隐藏引擎的细节encryptor.write(data, 0, data.length);int finalLength=out.size();byte[] cbytes = new byte[finalLength];System.arraycopy(out.getByteArray(), 0, cbytes, 0, finalLength);return cbytes;}public static String decrypt(byte[] content) throws CryptoTokenException, CryptoUnsupportedOperationException, IOException{//获取密码.String keyStr=getKeyStr();byte[] keyData=keyStr.getBytes(); // 首先，创建AESKey。AESKey key=new AESKey(keyData);// 创建解密引擎。AESDecryptorEngine engin=new AESDecryptorEngine(key);// 创建BlockDecryptor隐藏解密细节。ByteArrayInputStream input = new ByteArrayInputStream(content);BlockDecryptor decryptor=new BlockDecryptor(engin, input);// 读取数据byte[] temp = new byte[100];DataBuffer buffer = new DataBuffer();int pos=0;while((pos=decryptor.read(temp))>0){buffer.write(temp,0, pos);}byte[] plaintextAndHash = buffer.getArray();String str=new String(plaintextAndHash,0,plaintextAndHash.length,"UTF-8");// 如果position>0说明填充过字符串qwertyuiopasdfgh@int position=str.indexOf("qwertyuiopasdfgh@");if(position>0){str=str.substring(0, position);}str=str.trim();int pos1=str.lastIndexOf('>');if(pos1<str.length()&&pos1>=0){str=str.substring(0, pos1+1);}return str.trim();}//获取秘钥private static String getKeyStr(){return "1234567890123456";}}

java端：

import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.UnsupportedEncodingException;import java.security.InvalidKeyException;import java.security.NoSuchAlgorithmException;import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;import javax.crypto.NoSuchPaddingException;import javax.crypto.spec.SecretKeySpec;public class CryptoUtil {public static byte[] encrypt(String content) throws NoSuchAlgorithmException,NoSuchPaddingException,InvalidKeyException,UnsupportedEncodingException{String keyStr=getKeyStr();int len=content.length();int cha=0;//如果不是16的倍数就加上qwertyuiopasdfgh@字符串if((cha=len%16)!=0){for(int i=0;i<16-cha;i++){content+="qwertyuiopasdfgh@";}}byte[] data=content.getBytes("UTF-8");byte[] keyData=keyStr.getBytes();//使用AES/ECB/NoPaddingCipher aes=Cipher.getInstance("AES/ECB/NoPadding");SecretKeySpec key=new SecretKeySpec(keyData, "AES");aes.init(Cipher.ENCRYPT_MODE, key);byte[] cleartext = aes.update(data, 0, data.length);return cleartext;}public static String decrypt(byte[] content) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException, UnsupportedEncodingException{String keyStr=getKeyStr();byte[] keyData=keyStr.getBytes();//使用AES/ECB/NoPaddingCipher aes=Cipher.getInstance("AES/ECB/NoPadding");SecretKeySpec key=new SecretKeySpec(keyData, "AES");aes.init(Cipher.DECRYPT_MODE, key);byte[] cleartext = aes.update(content, 0, content.length);String str=new String(cleartext,0,cleartext.length,"UTF-8");int position=str.indexOf("qwertyuiopasdfgh@");if(position>0){str=str.substring(0, position);}return str.trim();}//获取秘钥private static String getKeyStr(){return "1234567890123456";}       /**将16进制转换为二进制         * @param hexStr         * @return         */  public static byte[] parseHexStr2Byte(String hexStr) { byte[] result=new byte[hexStr.length()/2];for(int i=0;i<hexStr.length()/2;i++){int high=Integer.parseInt(hexStr.substring(i*2, i*2+1),16);int low=Integer.parseInt(hexStr.substring(i*2+1, i*2+2),16);result[i]=(byte)(high*16+low);}return result;}      /**将二进制转换成16进制        * @param buf        * @return        */   public static String parseByte2HexStr(byte buf[]) {StringBuffer sb=new StringBuffer();for(int i=0;i<buf.length;i++){String hex=Integer.toHexString(buf[i]&0xFF);if(hex.length()==1){hex='0'+hex;}sb.append(hex.toUpperCase());}return sb.toString();}}