Fix Lint errors.

Change-Id: Idf5526bb6d5d10e5692b5c99544f200fb24b1ff7
ORIGINAL_AUTHOR=Thai Duong <thaidn@google.com>
GitOrigin-RevId: 7f9877d277d3b700de16721d27402a2121b8310f

java/src/main/java/com/google/crypto/tink/hybrid/EciesAeadHkdfHybridEncrypt.java

@@ -33,7 +33,6 @@ import java.security.interfaces.ECPublicKey;
  */
 class EciesAeadHkdfHybridEncrypt implements HybridEncrypt {
   private static final byte[] EMPTY_AAD = new byte[0];
-  private final ECPublicKey recipientPublicKey;
   private final EciesHkdfSenderKem senderKem;
   private final String hkdfHmacAlgo;
   private final byte[] hkdfSalt;
@@ -45,7 +44,6 @@ class EciesAeadHkdfHybridEncrypt implements HybridEncrypt {
       KeyTemplate aeadDemTemplate, EcPointFormat ecPointFormat)
       throws GeneralSecurityException {
     EcUtil.checkPublicKey(recipientPublicKey);
-    this.recipientPublicKey = recipientPublicKey;
     this.senderKem = new EciesHkdfSenderKem(recipientPublicKey);
     this.hkdfSalt = hkdfSalt;
     this.hkdfHmacAlgo = hkdfHmacAlgo;

java/src/main/java/com/google/crypto/tink/signature/Ed25519PrivateKeyManager.java

@@ -24,10 +24,14 @@ import com.google.crypto.tink.TinkProto.KeyData;
 import com.google.crypto.tink.subtle.Ed25519Sign;
 import com.google.crypto.tink.subtle.SubtleUtil;
 import com.google.protobuf.ByteString;
-import com.google.protobuf.MessageLite;
 import com.google.protobuf.InvalidProtocolBufferException;
+import com.google.protobuf.MessageLite;
 import java.security.GeneralSecurityException;
 
+/**
+ * This instance of {@code KeyManager} generates new {@code Ed25519PrivateKey} keys and
+ * produces new instances of {@code Ed25519Sign}.
+ */
 public final class Ed25519PrivateKeyManager implements KeyManager<PublicKeySign> {
   Ed25519PrivateKeyManager() {}
   /**

java/src/main/java/com/google/crypto/tink/signature/Ed25519PublicKeyManager.java

@@ -23,10 +23,14 @@ import com.google.crypto.tink.TinkProto.KeyData;
 import com.google.crypto.tink.subtle.Ed25519Verify;
 import com.google.crypto.tink.subtle.SubtleUtil;
 import com.google.protobuf.ByteString;
-import com.google.protobuf.MessageLite;
 import com.google.protobuf.InvalidProtocolBufferException;
+import com.google.protobuf.MessageLite;
 import java.security.GeneralSecurityException;
 
+/**
+ * This key manager produces new instances of {@code Ed25519Verify}.
+ * It doesn't support key generation.
+ */
 public final class Ed25519PublicKeyManager implements
     KeyManager<PublicKeyVerify> {
   Ed25519PublicKeyManager() {}

java/src/test/java/com/google/crypto/tink/signature/Ed25519PrivateKeyManagerTest.java

@@ -21,13 +21,9 @@ import static junit.framework.Assert.assertTrue;
 import static junit.framework.Assert.fail;
 
 import com.google.crypto.tink.Ed25519Proto.Ed25519PrivateKey;
-import com.google.crypto.tink.Ed25519Proto.Ed25519PublicKey;
 import com.google.crypto.tink.PublicKeySign;
 import com.google.crypto.tink.PublicKeyVerify;
-import com.google.crypto.tink.TestUtil;
 import com.google.crypto.tink.TinkProto.KeyTemplate;
-import com.google.crypto.tink.Registry;
-import com.google.crypto.tink.Util;
 import com.google.crypto.tink.subtle.Ed25519Sign;
 import com.google.crypto.tink.subtle.Ed25519Verify;
 import com.google.crypto.tink.subtle.Random;

java/src/test/java/com/google/crypto/tink/signature/Ed25519PublicKeyManagerTest.java

@@ -16,22 +16,14 @@
 
 package com.google.crypto.tink.signature;
 
-import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertTrue;
 import static junit.framework.Assert.fail;
 
 import com.google.crypto.tink.Ed25519Proto.Ed25519PrivateKey;
-import com.google.crypto.tink.Ed25519Proto.Ed25519PublicKey;
 import com.google.crypto.tink.PublicKeySign;
 import com.google.crypto.tink.PublicKeyVerify;
-import com.google.crypto.tink.TestUtil;
 import com.google.crypto.tink.TinkProto.KeyTemplate;
-import com.google.crypto.tink.Registry;
-import com.google.crypto.tink.Util;
-import com.google.crypto.tink.subtle.Ed25519Sign;
-import com.google.crypto.tink.subtle.Ed25519Verify;
 import com.google.crypto.tink.subtle.Random;
-import com.google.protobuf.ByteString;
 import com.google.protobuf.MessageLite;
 import java.security.GeneralSecurityException;
 import java.util.Arrays;

tools/tinkey/src/main/java/com/google/crypto/tink/tinkey/Command.java

@@ -21,4 +21,4 @@ package com.google.crypto.tink.tinkey;
  */
 public interface Command {
   public void run() throws Exception;
-}
\ No newline at end of file
+}