74 lines
2.5 KiB
Java
74 lines
2.5 KiB
Java
/*
|
|
* Copyright 2016 Red Hat, Inc. and/or its affiliates
|
|
* and other contributors as indicated by the @author tags.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package org.keycloak.utils;
|
|
|
|
import com.google.zxing.BarcodeFormat;
|
|
import com.google.zxing.client.j2se.MatrixToImageWriter;
|
|
import com.google.zxing.common.BitMatrix;
|
|
import com.google.zxing.qrcode.QRCodeWriter;
|
|
import org.keycloak.common.util.Base64;
|
|
import org.keycloak.models.RealmModel;
|
|
import org.keycloak.models.UserModel;
|
|
import org.keycloak.models.utils.Base32;
|
|
|
|
import java.io.ByteArrayOutputStream;
|
|
|
|
/**
|
|
* @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
|
|
*/
|
|
public class TotpUtils {
|
|
|
|
public static String encode(String totpSecret) {
|
|
String encoded = Base32.encode(totpSecret.getBytes());
|
|
StringBuilder sb = new StringBuilder();
|
|
for (int i = 0; i < encoded.length(); i += 4) {
|
|
sb.append(encoded.substring(i, i + 4 < encoded.length() ? i + 4 : encoded.length()));
|
|
if (i + 4 < encoded.length()) {
|
|
sb.append(" ");
|
|
}
|
|
}
|
|
return sb.toString();
|
|
}
|
|
|
|
public static String decode(String totpSecretEncoded) {
|
|
String encoded = totpSecretEncoded.replace(" ", "");
|
|
byte[] bytes = Base32.decode(encoded);
|
|
return new String(bytes);
|
|
}
|
|
|
|
public static String qrCode(String totpSecret, RealmModel realm, UserModel user) {
|
|
try {
|
|
String keyUri = realm.getOTPPolicy().getKeyURI(realm, user, totpSecret);
|
|
|
|
int width = 246;
|
|
int height = 246;
|
|
|
|
QRCodeWriter writer = new QRCodeWriter();
|
|
final BitMatrix bitMatrix = writer.encode(keyUri, BarcodeFormat.QR_CODE, width, height);
|
|
|
|
ByteArrayOutputStream bos = new ByteArrayOutputStream();
|
|
MatrixToImageWriter.writeToStream(bitMatrix, "png", bos);
|
|
bos.close();
|
|
|
|
return Base64.encodeBytes(bos.toByteArray());
|
|
} catch (Exception e) {
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
|
|
}
|