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Subject [GitHub] [mina-sshd] JackOfMostTrades commented on a change in pull request #116: Add authorized_keys/verification support for OpenSSH "security key" key types
Date Sun, 01 Mar 2020 18:36:03 GMT
JackOfMostTrades commented on a change in pull request #116: Add authorized_keys/verification
support for OpenSSH "security key" key types
URL: https://github.com/apache/mina-sshd/pull/116#discussion_r386130066
 
 

 ##########
 File path: sshd-common/src/main/java/org/apache/sshd/common/config/keys/impl/SkECDSAPublicKeyEntryDecoder.java
 ##########
 @@ -0,0 +1,110 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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.apache.sshd.common.config.keys.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.GeneralSecurityException;
+import java.security.KeyFactory;
+import java.security.KeyPair;
+import java.security.KeyPairGenerator;
+import java.security.PrivateKey;
+import java.security.interfaces.ECPublicKey;
+import java.security.spec.InvalidKeySpecException;
+import java.util.Collections;
+import java.util.Map;
+import java.util.Objects;
+
+import org.apache.sshd.common.cipher.ECCurves;
+import org.apache.sshd.common.config.keys.KeyEntryResolver;
+import org.apache.sshd.common.session.SessionContext;
+import org.apache.sshd.common.u2f.SkEcdsaPublicKey;
+
+/**
+ * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
+ */
+public class SkECDSAPublicKeyEntryDecoder extends AbstractPublicKeyEntryDecoder<SkEcdsaPublicKey,
PrivateKey> {
+    public static final String KEY_TYPE = "sk-ecdsa-sha2-nistp256@openssh.com";
+    public static final int MAX_APP_NAME_LENGTH = 1024;
+
+    public static final SkECDSAPublicKeyEntryDecoder INSTANCE = new SkECDSAPublicKeyEntryDecoder();
+
+    private static final String NO_TOUCH_REQUIRED_HEADER = "no-touch-required";
+
+    public SkECDSAPublicKeyEntryDecoder() {
+        super(SkEcdsaPublicKey.class, PrivateKey.class, Collections.singleton(KEY_TYPE));
+    }
+
+    @Override
+    public SkEcdsaPublicKey decodePublicKey(
+            SessionContext session, String keyType, InputStream keyData, Map<String, String>
headers)
+                throws IOException, GeneralSecurityException {
+        if (!KEY_TYPE.equals(keyType)) {
+            throw new InvalidKeySpecException("Invalid keyType: " + keyType);
+        }
+
+        boolean noTouchRequired = false;
+        if (headers.containsKey(NO_TOUCH_REQUIRED_HEADER)) {
 
 Review comment:
   Put this and the other boolean parsing into a helper method in the parent class.

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