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java反向加密代码 java加密算法代码( 二 )

IT技术parseFloat


if(debug )
{
System.out.println ("加密前的二进串:"+byte2hex (input ));
System.out.println ("加密前的字符串:"+newString (input ));
} Cipherc1= Cipher.getInstance (Algorithm );
c1.init (Cipher.ENCRYPT_MODE ,deskey );
byte [] cipherByte =c1.doFinal (input );
if(debug ) System.out.println ("加密后的二进串:"+byte2hex (cipherByte ));
returncipherByte ;
} /**
* 将给定的已加密的数据通过指定的密钥进行解密
* @param input 待解密的数据
* @param key 密钥
* @return byte[] 解密后的数据
* @throws Exception
*/
publicstaticbyte [] decryptData (byte [] input ,byte [] key ) throwsException
{
SecretKeydeskey= newjavax.crypto.spec.SecretKeySpec (key ,Algorithm );
if(debug ) System.out.println ("解密前的信息:"+byte2hex (input ));
Cipherc1= Cipher.getInstance (Algorithm );
c1.init (Cipher.DECRYPT_MODE ,deskey );
byte [] clearByte =c1.doFinal (input );
if(debug )
{
System.out.println ("解密后的二进串:"+byte2hex (clearByte ));
System.out.println ("解密后的字符串:"+(newString (clearByte )));
} returnclearByte ;
} /**
* 字节码转换成16进制字符串
* @param byte[] b 输入要转换的字节码
* @return String 返回转换后的16进制字符串
*/
publicstaticStringbyte2hex (byte [] b )
{
Stringhs ="";
Stringstmp ="";
for(intn =0 ;n b.length ;n ++)
{
stmp =(java.lang.Integer.toHexString (b [n ]0XFF ));
if(stmp.length ()==1 ) hs =hs +"0"+stmp ;
elsehs =hs +stmp ;
if(n b.length -1 ) hs =hs +":";
} returnhs.toUpperCase ();
}
/**
* 字符串转成字节数组.
* @param hex 要转化的字符串.
* @return byte[] 返回转化后的字符串.
*/
public static byte[] hexStringToByte(String hex) {
int len = (hex.length() / 2);
byte[] result = new byte[len];
char[] achar = hex.toCharArray();
for (int i = 0; ilen; i++) {
int pos = i * 2;
result[i] = (byte) (toByte(achar[pos])4 | toByte(achar[pos + 1]));
}
return result;
}
private static byte toByte(char c) {
byte b = (byte) "0123456789ABCDEF".indexOf(c);
return b;
}
/**
* 字节数组转成字符串.
* @param String 要转化的字符串.
* @return 返回转化后的字节数组.
*/
public static final String bytesToHexString(byte[] bArray) {
StringBuffer sb = new StringBuffer(bArray.length);
String sTemp;
for (int i = 0; ibArray.length; i++) {
sTemp = Integer.toHexString(0xFFbArray[i]);
if (sTemp.length()2)
sb.append(0);
sb.append(sTemp.toUpperCase());
}
return sb.toString();
}
/**
* 从数据库中获取密钥.
* @param deptid 企业id.
* @return 要返回的字节数组.
* @throws Exception 可能抛出的异常.
*/
public static byte[] getSecretKey(long deptid) throws Exception {
byte[] key=null;
String value=https://www.04ip.com/post/null;
//CommDao dao=new CommDao();
// List list=dao.getRecordList("from Key k where k.deptid="+deptid);
//if(list.size()0){
//value=https://www.04ip.com/post/((com.csc.sale.bean.Key)list.get(0)).getKey();
value = "https://www.04ip.com/post/CB7A92E3D3491964";
key=hexStringToByte(value);
//}
if (debug)
System.out.println("密钥:" + value);
return key;
}
public String encryptData2(String data) {
String en = null;
try {
byte[] key=hexStringToByte(this.key);
en = bytesToHexString(encryptData(data.getBytes(),key));
} catch (Exception e) {
e.printStackTrace();
}
return en;
}
public String decryptData2(String data) {
String de = null;

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