import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
public class TestDes {
private static String KEY="DES";
public static void main(String[] args) {
getSecurityStr("测试DES加密算法");
}
public static void getSecurityStr(String inputData){
try {
if(inputData!=null&&!"".equals(inputData)){
//生成KEY
KeyGenerator kg = KeyGenerator.getInstance(KEY);
kg.init(56);//填充默认56位
SecretKey sk = kg.generateKey();
byte[] bytesKey = sk.getEncoded();
//KEY转换
DESKeySpec dks = new DESKeySpec(bytesKey);
SecretKeyFactory skf = SecretKeyFactory.getInstance(KEY);
Key key = skf.generateSecret(dks);
//加密数据
Cipher cipher = Cipher.getInstance(KEY+"/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] securityStr = cipher.doFinal(inputData.getBytes());
System.out.println("加密:"+byteArray2HexStr(securityStr));
//解密数据
cipher.init(Cipher.DECRYPT_MODE, key);
securityStr=cipher.doFinal(securityStr);
System.out.println("解密:"+new String(securityStr));
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static String byteArray2HexStr(byte[] arrB) {
int iLen = arrB.length;
StringBuffer sb = new StringBuffer(iLen * 2);// 每个byte用两个字符才能表示,所以字符串的长度是数组长度的两倍
for (int i = 0; i < iLen; i++) {
int intTmp = arrB[i];
while (intTmp < 0) {// 把负数转换为正数
intTmp = intTmp + 256;
}
if (intTmp < 16) {// 小于0F的数需要在前面补0
sb.append("0");
}
sb.append(Integer.toString(intTmp, 16));
}
return sb.toString();
}
}
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
public class TestDes {
private static String KEY="DES";
public static void main(String[] args) {
getSecurityStr("测试DES加密算法");
}
public static void getSecurityStr(String inputData){
try {
if(inputData!=null&&!"".equals(inputData)){
//生成KEY
KeyGenerator kg = KeyGenerator.getInstance(KEY);
kg.init(56);//填充默认56位
SecretKey sk = kg.generateKey();
byte[] bytesKey = sk.getEncoded();
//KEY转换
DESKeySpec dks = new DESKeySpec(bytesKey);
SecretKeyFactory skf = SecretKeyFactory.getInstance(KEY);
Key key = skf.generateSecret(dks);
//加密数据
Cipher cipher = Cipher.getInstance(KEY+"/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] securityStr = cipher.doFinal(inputData.getBytes());
System.out.println("加密:"+byteArray2HexStr(securityStr));
//解密数据
cipher.init(Cipher.DECRYPT_MODE, key);
securityStr=cipher.doFinal(securityStr);
System.out.println("解密:"+new String(securityStr));
}
} catch (Exception e) {
e.printStackTrace();
}
}
public static String byteArray2HexStr(byte[] arrB) {
int iLen = arrB.length;
StringBuffer sb = new StringBuffer(iLen * 2);// 每个byte用两个字符才能表示,所以字符串的长度是数组长度的两倍
for (int i = 0; i < iLen; i++) {
int intTmp = arrB[i];
while (intTmp < 0) {// 把负数转换为正数
intTmp = intTmp + 256;
}
if (intTmp < 16) {// 小于0F的数需要在前面补0
sb.append("0");
}
sb.append(Integer.toString(intTmp, 16));
}
return sb.toString();
}
}
输出结果为:
加密:96b489bc95f528714b1ca7e89df69bac73b673730cab590f
解密:测试DES加密算法
注意加密每次运行结果是不一样的