激活方法
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public class DbSchemaKeyGenerator {
public static void main(String[] args) {
String name = "cuishiying";
try {
String key = generateKey(name);
System.out.println("key: " + key);
} catch (NoSuchAlgorithmException | UnsupportedEncodingException e) {
e.printStackTrace();
}
}
private static String generateKey(String name) throws NoSuchAlgorithmException, UnsupportedEncodingException {
String salt = getSalt();
String encryptSource = "ax5" + name + "b52w" + salt + "vb3";
MessageDigest localMessageDigest = MessageDigest.getInstance("MD5");
String hash = formatToHex(localMessageDigest.digest(encryptSource.getBytes("UTF-8")));
return hash.substring(0, 4) + salt + hash.substring(4);
}
private static String formatToHex(byte[] paramArrayOfByte) {
StringBuilder localStringBuilder = new StringBuilder();
for (int m = 0; m < paramArrayOfByte.length; m++) {
if ((m % 32 == 0) && (m != 0)) {
localStringBuilder.append("\n");
}
String str = Integer.toHexString(paramArrayOfByte[m]);
if (str.length() < 2) {
str = "0" + str;
}
if (str.length() > 2) {
str = str.substring(str.length() - 2);
}
localStringBuilder.append(str);
}
return localStringBuilder.toString();
}
private static int random(int min, int max) {
return rand() % (max - min + 1) + min;
}
private static int rand() {
return new Random().nextInt(Integer.MAX_VALUE);
}
private static String getSalt() {
int r = random(10000, 30000);
return String.valueOf(r);
}
}
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最后
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