Move ECDSA and ECDH to ecc subpackage

pgpainless-core/src/main/java/org/pgpainless/key/generation/KeyRingBuilder.java

@@ -53,7 +53,7 @@ import org.pgpainless.algorithm.HashAlgorithm;
 import org.pgpainless.algorithm.KeyFlag;
 import org.pgpainless.algorithm.SignatureType;
 import org.pgpainless.key.generation.type.KeyType;
-import org.pgpainless.key.generation.type.EllipticCurve;
+import org.pgpainless.key.generation.type.ecc.EllipticCurve;
 import org.pgpainless.key.generation.type.rsa.RsaLength;
 import org.pgpainless.key.util.UserId;
 import org.pgpainless.provider.ProviderFactory;

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/KeyType.java

@@ -18,8 +18,11 @@ package org.pgpainless.key.generation.type;
 import java.security.spec.AlgorithmParameterSpec;
 
 import org.pgpainless.algorithm.PublicKeyAlgorithm;
-import org.pgpainless.key.generation.type.ecdh.ECDH;
-import org.pgpainless.key.generation.type.ecdsa.ECDSA;
+import org.pgpainless.key.generation.type.ecc.EllipticCurve;
+import org.pgpainless.key.generation.type.ecc.ecdh.ECDH;
+import org.pgpainless.key.generation.type.ecc.ecdsa.ECDSA;
+import org.pgpainless.key.generation.type.eddsa.EdDSA;
+import org.pgpainless.key.generation.type.eddsa.EdDSACurve;
 import org.pgpainless.key.generation.type.rsa.RsaLength;
 import org.pgpainless.key.generation.type.rsa.RSA;
 
@@ -31,6 +34,8 @@ public interface KeyType {
 
     AlgorithmParameterSpec getAlgorithmSpec();
 
+    boolean canCertify();
+
     static KeyType RSA(RsaLength length) {
         return RSA.withLength(length);
     }
@@ -43,5 +48,7 @@ public interface KeyType {
         return ECDSA.fromCurve(curve);
     }
 
-    // TODO: Decide, if we want to add ElGamal here as well?
+    static KeyType EDDSA(EdDSACurve curve) {
+        return EdDSA.fromCurve(curve);
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/ecc/EllipticCurve.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.pgpainless.key.generation.type;
+package org.pgpainless.key.generation.type.ecc;
 
 import javax.annotation.Nonnull;
 

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/ecc/ecdh/ECDH.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.pgpainless.key.generation.type.ecdh;
+package org.pgpainless.key.generation.type.ecc.ecdh;
 
 import javax.annotation.Nonnull;
 import java.security.spec.AlgorithmParameterSpec;
@@ -21,7 +21,7 @@ import java.security.spec.AlgorithmParameterSpec;
 import org.bouncycastle.jce.spec.ECNamedCurveGenParameterSpec;
 import org.pgpainless.algorithm.PublicKeyAlgorithm;
 import org.pgpainless.key.generation.type.KeyType;
-import org.pgpainless.key.generation.type.EllipticCurve;
+import org.pgpainless.key.generation.type.ecc.EllipticCurve;
 
 public final class ECDH implements KeyType {
 
@@ -49,4 +49,9 @@ public final class ECDH implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new ECNamedCurveGenParameterSpec(curve.getName());
     }
+
+    @Override
+    public boolean canCertify() {
+        return false;
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/ecc/ecdh/package-info.java

@@ -16,4 +16,4 @@
 /**
  * Classes related to ECDH.
  */
-package org.pgpainless.key.generation.type.ecdh;
+package org.pgpainless.key.generation.type.ecc.ecdh;

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/ecc/ecdsa/ECDSA.java

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.pgpainless.key.generation.type.ecdsa;
+package org.pgpainless.key.generation.type.ecc.ecdsa;
 
 
 import java.security.spec.AlgorithmParameterSpec;
@@ -21,7 +21,7 @@ import javax.annotation.Nonnull;
 
 import org.bouncycastle.jce.spec.ECNamedCurveGenParameterSpec;
 import org.pgpainless.algorithm.PublicKeyAlgorithm;
-import org.pgpainless.key.generation.type.EllipticCurve;
+import org.pgpainless.key.generation.type.ecc.EllipticCurve;
 import org.pgpainless.key.generation.type.KeyType;
 
 public final class ECDSA implements KeyType {
@@ -50,4 +50,9 @@ public final class ECDSA implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new ECNamedCurveGenParameterSpec(curve.getName());
     }
+
+    @Override
+    public boolean canCertify() {
+        return true;
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/ecc/ecdsa/package-info.java

@@ -16,4 +16,4 @@
 /**
  * Classes related to ECDSA.
  */
-package org.pgpainless.key.generation.type.ecdsa;
+package org.pgpainless.key.generation.type.ecc.ecdsa;

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/eddsa/EdDSA.java

@@ -21,6 +21,9 @@ import org.bouncycastle.jce.spec.ECNamedCurveGenParameterSpec;
 import org.pgpainless.algorithm.PublicKeyAlgorithm;
 import org.pgpainless.key.generation.type.KeyType;
 
+/**
+ * Edwards-curve Digital Signature Algorithm (EdDSA).
+ */
 public final class EdDSA implements KeyType {
 
     private final EdDSACurve curve;
@@ -47,4 +50,9 @@ public final class EdDSA implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new ECNamedCurveGenParameterSpec(curve.getName());
     }
+
+    @Override
+    public boolean canCertify() {
+        return true;
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/elgamal/ElGamal_ENCRYPT.java

@@ -48,4 +48,9 @@ public final class ElGamal_ENCRYPT implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new ElGamalParameterSpec(length.getP(), length.getG());
     }
+
+    @Override
+    public boolean canCertify() {
+        return false;
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/elgamal/ElGamal_GENERAL.java

@@ -49,4 +49,9 @@ public class ElGamal_GENERAL implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new ElGamalParameterSpec(length.getP(), length.getG());
     }
+
+    @Override
+    public boolean canCertify() {
+        return false;
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/length/DiffieHellmanLength.java

@@ -1,38 +0,0 @@
-/*
- * Copyright 2018 Paul Schaub.
- *
- * 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.pgpainless.key.generation.type.length;
-
-import org.pgpainless.key.generation.type.KeyLength;
-
-public enum DiffieHellmanLength implements KeyLength {
-
-    _1024(1024),
-    _2048(2048),
-    _3072(3072),
-    ;
-
-    private final int length;
-
-    DiffieHellmanLength(int length) {
-        this.length = length;
-    }
-
-    @Override
-    public int getLength() {
-        return length;
-    }
-
-}

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/length/package-info.java

@@ -1,19 +0,0 @@
-/*
- * Copyright 2018 Paul Schaub.
- *
- * 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.
- */
-/**
- * Classes describing the lengths of different public key crypto systems.
- */
-package org.pgpainless.key.generation.type.length;

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/rsa/RSA.java

@@ -51,4 +51,9 @@ public class RSA implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new RSAKeyGenParameterSpec(length.getLength(), RSAKeyGenParameterSpec.F4);
     }
+
+    @Override
+    public boolean canCertify() {
+        return true;
+    }
 }

pgpainless-core/src/main/java/org/pgpainless/key/generation/type/xdh/XDH.java

@@ -47,4 +47,9 @@ public final class XDH implements KeyType {
     public AlgorithmParameterSpec getAlgorithmSpec() {
         return new ECNamedCurveGenParameterSpec(curve.getName());
     }
+
+    @Override
+    public boolean canCertify() {
+        return false;
+    }
 }

pgpainless-core/src/test/java/org/pgpainless/key/modification/AddSubKeyTest.java

@@ -34,8 +34,8 @@ import org.pgpainless.PGPainless;
 import org.pgpainless.algorithm.KeyFlag;
 import org.pgpainless.key.TestKeys;
 import org.pgpainless.key.generation.KeySpec;
-import org.pgpainless.key.generation.type.ecdsa.ECDSA;
-import org.pgpainless.key.generation.type.EllipticCurve;
+import org.pgpainless.key.generation.type.ecc.ecdsa.ECDSA;
+import org.pgpainless.key.generation.type.ecc.EllipticCurve;
 import org.pgpainless.key.protection.PasswordBasedSecretKeyRingProtector;
 import org.pgpainless.util.Passphrase;