public static String bytesToHex(byte[] data) {
if (data == null) {
return null;
}
int len = data.length;
String str = "";
for (int i = 0; i < len; i++) {
if ((data[i] & 0xFF) < 16) str = str + "0" + java.lang.Integer.toHexString(data[i] & 0xFF);
else str = str + java.lang.Integer.toHexString(data[i] & 0xFF);
}
return str;
}
/**
* 加密（使用DES算法）
*
* @param txt 需要加密的文本
* @param key 密钥
* @return 成功加密的文本
* @throws InvalidKeySpecException
* @throws InvalidKeyException
* @throws NoSuchPaddingException
* @throws IllegalBlockSizeException
* @throws BadPaddingException
*/
private static String enCrypto(String txt, String key)
throws InvalidKeySpecException, InvalidKeyException, NoSuchPaddingException,
IllegalBlockSizeException, BadPaddingException {
StringBuffer sb = new StringBuffer();
DESKeySpec desKeySpec = new DESKeySpec(key.getBytes());
SecretKeyFactory skeyFactory = null;
Cipher cipher = null;
try {
skeyFactory = SecretKeyFactory.getInstance("DES");
cipher = Cipher.getInstance("DES");
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
SecretKey deskey = skeyFactory != null ? skeyFactory.generateSecret(desKeySpec) : null;
if (cipher != null) {
cipher.init(Cipher.ENCRYPT_MODE, deskey);
}
byte[] cipherText = cipher != null ? cipher.doFinal(txt.getBytes()) : new byte[0];
for (int n = 0; n < cipherText.length; n++) {
String stmp = (java.lang.Integer.toHexString(cipherText[n] & 0XFF));
if (stmp.length() == 1) {
sb.append("0" + stmp);
} else {
sb.append(stmp);
}
}
return sb.toString().toUpperCase();
}
/**
* 二行制转字符串
*
* @param b
* @return
*/
public static String byte2hex(byte[] b) {
String hs = "";
String stmp = "";
for (int n = 0; n < b.length; n++) {
stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
if (stmp.length() == 1) hs = hs + "0" + stmp;
else hs = hs + stmp;
}
return hs.toUpperCase();
}
/*
* 二行制转字符串
*/
private static String byte2hex(byte[] b) {
StringBuffer hs = new StringBuffer();
String stmp = "";
for (int n = 0; n < b.length; n++) {
stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
if (stmp.length() == 1) hs.append("0").append(stmp);
else hs.append(stmp);
}
return hs.toString().toUpperCase();
}
private static String byte2hex(byte[] b) {
StringBuilder hs = new StringBuilder();
for (int n = 0; n < b.length; n++) {
String stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
if (stmp.length() == 1) {
hs.append("0");
}
hs.append(stmp);
}
return hs.toString();
}
/**
* 将字节转换为16进制字符串显示. Turns an array of bytes into a String representing each byte as an unsigned
* hex number.
*
* @param hash 待转换字节数组
* @return 16进制表示的字符串
*/
public static final String toHex(byte hash[]) {
StringBuffer buf = new StringBuffer(hash.length * 2);
String stmp = "";
for (int i = 0; i < hash.length; i++) {
stmp = (java.lang.Integer.toHexString(hash[i] & 0XFF));
if (stmp.length() == 1) {
buf.append(0).append(stmp);
} else {
buf.append(stmp);
}
}
return buf.toString();
}
public String byte2hex(byte[] b) { // ������ת�ַ�
String hs = "";
String stmp = "";
for (int n = 0; n < b.length; n++) {
stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
if (stmp.length() == 1) {
hs = hs + "0" + stmp;
} else {
hs = hs + stmp;
}
if (n < b.length - 1) {
hs = hs;
}
}
return hs;
}
