[#873] Fixed Checkstyle Issues In HIRS_STRUCTS

HIRS_Structs/build.gradle

@@ -39,10 +39,10 @@ configurations.checkstyle {
     }
 }
 checkstyleMain {
-    source ='src/main/java'
+    source = 'src/main/java'
 }
 checkstyleTest {
-    source ='src/test/java'
+    source = 'src/test/java'
 }
 tasks.withType(Checkstyle) {
     reports {

HIRS_Structs/config/spotbugs/spotbugs-exclude.xml

@@ -2,11 +2,11 @@
 <!-- Docs at http://findbugs.sourceforge.net/manual/filter.html -->
 <FindBugsFilter>
     <Match>
-        <Package name="~hirs\.structs.*" />
+        <Package name="~hirs\.structs.*"/>
     </Match>
     <Match>
         <!-- https://github.com/spotbugs/spotbugs/pull/2748 -->
-        <Bug pattern="CT_CONSTRUCTOR_THROW" />
+        <Bug pattern="CT_CONSTRUCTOR_THROW"/>
     </Match>
 
     <!--    <Match>-->

HIRS_Structs/src/main/java/hirs/structs/converters/SimpleStructBuilder.java

@@ -2,22 +2,24 @@
 
 import hirs.structs.elements.Struct;
 import hirs.structs.elements.StructElementLength;
-import java.lang.reflect.Field;
-import java.lang.reflect.InvocationTargetException;
 import org.apache.commons.lang3.reflect.ConstructorUtils;
 import org.apache.commons.lang3.reflect.FieldUtils;
 
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+
 /**
  * StructBuilder implementation.
  *
  * @param <T> the type of Struct to build
  */
 public class SimpleStructBuilder<T extends Struct> implements StructBuilder {
-    private T struct;
     private final Class<T> clazz;
+    private T struct;
 
     /**
      * Instantiates the builder.
+     *
      * @param clazz The type of struct to build
      */
     public SimpleStructBuilder(final Class<T> clazz) {
@@ -29,7 +31,7 @@ private void resetStruct() {
         try {
             struct = ConstructorUtils.invokeConstructor(clazz);
         } catch (InstantiationException | IllegalAccessException
-               | NoSuchMethodException | InvocationTargetException e) {
+                 | NoSuchMethodException | InvocationTargetException e) {
             throw new StructBuilderException(
                     String.format("Unexpected error constructing new instance: %s",
                             clazz.getSimpleName(), e.getMessage()), e);
@@ -59,17 +61,13 @@ public SimpleStructBuilder<T> set(final String field, final String value) {
     public SimpleStructBuilder<T> set(final String field, final Number value) {
         try {
             String type = clazz.getDeclaredField(field).getType().getSimpleName();
-            switch (clazz.getDeclaredField(field).getType().getSimpleName()) {
-                case "short":
-                    return setField(field, value.shortValue());
-                case "int":
-                    return setField(field, value.intValue());
-                case "byte":
-                    return setField(field, value.byteValue());
-                default:
-                    throw new StructBuilderException(
-                            String.format("Unhandled numeric field type: %s", type));
-            }
+            return switch (clazz.getDeclaredField(field).getType().getSimpleName()) {
+                case "short" -> setField(field, value.shortValue());
+                case "int" -> setField(field, value.intValue());
+                case "byte" -> setField(field, value.byteValue());
+                default -> throw new StructBuilderException(
+                        String.format("Unhandled numeric field type: %s", type));
+            };
         } catch (NoSuchFieldException | SecurityException e) {
             throw new StructBuilderException(
                     String.format("Unexpected error setting field: %s",
@@ -122,7 +120,7 @@ private SimpleStructBuilder<T> setField(final String fieldName, final Object val
             FieldUtils.writeField(field, struct, value);
             field.setAccessible(false);
         } catch (NoSuchFieldException | SecurityException
-               | IllegalArgumentException | IllegalAccessException e) {
+                 | IllegalArgumentException | IllegalAccessException e) {
             throw new StructBuilderException(
                     String.format("Unexpected error setting field: %s",
                             fieldName, e.getMessage()), e);

HIRS_Structs/src/main/java/hirs/structs/converters/SimpleStructConverter.java

@@ -25,7 +25,7 @@ public final byte[] convert(final Struct struct) {
 
         // using output stream resources, serialize the specified struct
         try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
-                DataOutputStream dataOutputStream = new DataOutputStream(byteArrayOutputStream)) {
+             DataOutputStream dataOutputStream = new DataOutputStream(byteArrayOutputStream)) {
 
             // obtain the struct elements definition
             StructElements structElements = struct.getClass().getAnnotation(StructElements.class);

HIRS_Structs/src/main/java/hirs/structs/converters/StructConverter.java

@@ -20,8 +20,8 @@ public interface StructConverter {
      *
      * @param data to be parsed
      * @param type type of data being parsed
-     * @param <T> the {@link Struct} type
+     * @param <T>  the {@link Struct} type
      * @return de-serialized struct
      */
-    <T extends Struct> T convert(final byte[] data, final Class<T> type);
+    <T extends Struct> T convert(byte[] data, Class<T> type);
 }

HIRS_Structs/src/main/java/hirs/structs/elements/StructElementLength.java

@@ -14,7 +14,7 @@
 public @interface StructElementLength {
 
     /**
-     * the field that this length represents.
+     * @return the field that this length represents.
      */
     String fieldName();
 }

HIRS_Structs/src/main/java/hirs/structs/elements/StructElements.java

@@ -13,7 +13,7 @@
 public @interface StructElements {
 
     /**
-     * elements in order to be processed by a converter.
+     * @return elements in order to be processed by a converter.
      */
     String[] elements();
 }

HIRS_Structs/src/main/java/hirs/structs/elements/aca/IdentityRequestEnvelope.java

@@ -10,10 +10,10 @@
  * A container for an encoded {@link hirs.structs.elements.tpm.IdentityRequest},
  * its associated endorsement credential, and its device information.
  */
-@StructElements(elements = { "requestLength", "request",
-    "endorsementCredentialModulusLength", "endorsementCredentialModulus",
-    "endorsementCredentialLength", "endorsementCredential",
-    "deviceInfoReportLength", "deviceInfoReport" })
+@StructElements(elements = {"requestLength", "request",
+        "endorsementCredentialModulusLength", "endorsementCredentialModulus",
+        "endorsementCredentialLength", "endorsementCredential",
+        "deviceInfoReportLength", "deviceInfoReport"})
 public class IdentityRequestEnvelope implements Struct {
 
     @StructElementLength(fieldName = "request")
@@ -72,23 +72,20 @@ public int getEndorsementCredentialLength() {
     }
 
     /**
-     *
      * @return the endorsementCredential
      */
     public byte[] getEndorsementCredential() {
         return Arrays.copyOf(endorsementCredential, endorsementCredential.length);
     }
 
     /**
-     *
      * @return the length of the device info report
      */
     public int getDeviceInfoReportLength() {
         return deviceInfoReportLength;
     }
 
     /**
-     *
      * @return the device info report
      */
     public byte[] getDeviceInfoReport() {

HIRS_Structs/src/main/java/hirs/structs/elements/aca/IdentityResponseEnvelope.java

@@ -9,8 +9,8 @@
 /**
  * Data structure used by the ACA to respond back to a client's {@link IdentityRequestEnvelope}.
  */
-@StructElements(elements = { "asymmetricContentsSize", "asymmetricContents",
-        "symmetricAttestation" })
+@StructElements(elements = {"asymmetricContentsSize", "asymmetricContents",
+        "symmetricAttestation"})
 public class IdentityResponseEnvelope implements Struct {
 
     @StructElementLength(fieldName = "asymmetricContents")

HIRS_Structs/src/main/java/hirs/structs/elements/aca/SymmetricAttestation.java

@@ -12,7 +12,7 @@
  * the envelope contains the Identity Credential that is signed by the ACA. This along with the key
  * parameters are typically sent to the TPM to activate an Identity.
  */
-@StructElements(elements = { "credentialSize", "algorithm", "credential" })
+@StructElements(elements = {"credentialSize", "algorithm", "credential"})
 public class SymmetricAttestation implements Struct {
 
     @StructElementLength(fieldName = "credential")

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/AsymmetricKeyParams.java

@@ -8,8 +8,8 @@
  * As defined in TCPA 4.20, the key parameters data structure describes the parameters used to
  * generate a key pair and to store the parts of a key.
  */
-@StructElements(elements = { "algorithmId", "encryptionScheme", "signatureScheme", "paramsSize",
-        "params" })
+@StructElements(elements = {"algorithmId", "encryptionScheme", "signatureScheme", "paramsSize",
+        "params"})
 public class AsymmetricKeyParams implements Struct {
 
     private int algorithmId;

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/AsymmetricPublicKey.java

@@ -8,7 +8,7 @@
  * portion of an asymmetric key pair. It contains all the information necessary for it's unambiguous
  * usage.
  */
-@StructElements(elements = { "asymmetricKeyParams", "storePubKey" })
+@StructElements(elements = {"asymmetricKeyParams", "storePubKey"})
 public class AsymmetricPublicKey implements Struct {
 
     /**

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/EncryptionScheme.java

@@ -35,11 +35,6 @@ public enum EncryptionScheme {
         this.encryptionScheme = encryptionScheme;
     }
 
-    @Override
-    public String toString() {
-        return this.encryptionScheme;
-    }
-
     /**
      * Maps an {@link EncryptionScheme} based upon an integer. If the scheme is unmapped, the
      * default, {@link #PKCS1} is returned.
@@ -48,11 +43,14 @@ public String toString() {
      * @return the encryption scheme, or if unknown, the default.
      */
     public static EncryptionScheme fromInt(final int scheme) {
-        switch (scheme) {
-            case OAEP_VALUE:
-                return OAEP;
-            default:
-                return PKCS1;
+        if (scheme == OAEP_VALUE) {
+            return OAEP;
         }
+        return PKCS1;
+    }
+
+    @Override
+    public String toString() {
+        return this.encryptionScheme;
     }
 }

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/IdentityProof.java

@@ -11,9 +11,9 @@
  * identity process. This structure contains information that is required by the Attestation
  * Certificate Authority to attest an identity request.
  */
-@StructElements(elements = { "version", "labelSize", "identityBindingSize", "endorsementSize",
+@StructElements(elements = {"version", "labelSize", "identityBindingSize", "endorsementSize",
         "platformSize", "conformanceSize", "identityKey", "label", "identityBinding",
-        "endorsementCredential", "platformCredential", "conformanceCredential" })
+        "endorsementCredential", "platformCredential", "conformanceCredential"})
 public class IdentityProof implements Struct {
 
     private Version version;

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/IdentityRequest.java

@@ -10,8 +10,8 @@
  * As specified in TCPA 4.30.2 specification. This structure is sent to the Attestation Certificate
  * Authority to create an Identity Credential.
  */
-@StructElements(elements = { "asymmetricBlobSize", "symmetricBlobSize", "asymmetricAlgorithm",
-        "symmetricAlgorithm", "asymmetricBlob", "symmetricBlob" })
+@StructElements(elements = {"asymmetricBlobSize", "symmetricBlobSize", "asymmetricAlgorithm",
+        "symmetricAlgorithm", "asymmetricBlob", "symmetricBlob"})
 public class IdentityRequest implements Struct {
 
     @StructElementLength(fieldName = "asymmetricBlob")

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/PublicKey.java

@@ -8,7 +8,7 @@
  * portion of an asymmetric key pair. It contains all the information necessary for it's unambiguous
  * usage.
  */
-@StructElements(elements = { "asymmetricKeyParams", "storePubKey" })
+@StructElements(elements = {"asymmetricKeyParams", "storePubKey"})
 public class PublicKey implements Struct {
 
     private AsymmetricKeyParams asymmetricKeyParams;

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/RsaSubParams.java

@@ -10,7 +10,7 @@
  * Parameters that are used to describe a particular {@link AsymmetricKeyParams} as specified by the
  * TCPA 4.20.
  */
-@StructElements(elements = { "keyLength", "totalPrimes", "exponentSize", "exponent" })
+@StructElements(elements = {"keyLength", "totalPrimes", "exponentSize", "exponent"})
 public class RsaSubParams implements Struct {
 
     private int keyLength;

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/StorePubKey.java

@@ -10,7 +10,7 @@
  * As specified in TCPA Main Specification section 4.27.2. This structure represents a public key of
  * an asymmetric key pair.
  */
-@StructElements(elements = { "keyLength", "key" })
+@StructElements(elements = {"keyLength", "key"})
 public class StorePubKey implements Struct {
 
     @StructElementLength(fieldName = "key")

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/SymmetricKey.java

@@ -10,7 +10,7 @@
  * Part of the TPM Identity Request. This Structure is encrypted inside the request and is typically
  * unencrypted by an Attestation Certificate Authority.
  */
-@StructElements(elements = { "algorithmId", "encryptionScheme", "keySize", "key" })
+@StructElements(elements = {"algorithmId", "encryptionScheme", "keySize", "key"})
 public class SymmetricKey implements Struct {
 
     /**

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/SymmetricKeyParams.java

@@ -7,8 +7,8 @@
 /**
  * Represents a symmetric key as specified in section 4.20 of the TCPA.
  */
-@StructElements(elements = { "algorithmId", "encryptionScheme", "signatureScheme", "paramsSize",
-        "params" })
+@StructElements(elements = {"algorithmId", "encryptionScheme", "signatureScheme", "paramsSize",
+        "params"})
 public class SymmetricKeyParams implements Struct {
 
     /**

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/SymmetricSubParams.java

@@ -10,7 +10,7 @@
  * Represents a dynamic key parameters data structure that is enclosed inside a {@link
  * SymmetricKeyParams}.
  */
-@StructElements(elements = { "keyLength", "blockSize", "ivSize", "iv" })
+@StructElements(elements = {"keyLength", "blockSize", "ivSize", "iv"})
 public class SymmetricSubParams implements Struct {
 
     private int keyLength;

HIRS_Structs/src/main/java/hirs/structs/elements/tpm/Version.java

@@ -7,7 +7,7 @@
  * As specified in the TCPA Main Specification section 4.5. This structure represents the version of
  * the TPM.
  */
-@StructElements(elements = { "major", "minor", "revisionMajor", "revisionMinor" })
+@StructElements(elements = {"major", "minor", "revisionMajor", "revisionMinor"})
 public class Version implements Struct {
 
     private byte major;

HIRS_Structs/src/test/java/hirs/structs/converters/SimpleStructBuilderTest.java

@@ -1,8 +1,9 @@
 package hirs.structs.converters;
 
+import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import org.junit.jupiter.api.Test;
 
 /**
  * Tests suite for {@link SimpleStructConverter}.
@@ -13,24 +14,25 @@ public class SimpleStructBuilderTest {
 
     /**
      * Tests {@link SimpleStructBuilder#build()}.
-     * @throws NoSuchFieldException sometimes
-     * @throws IllegalAccessException sometimes
+     *
+     * @throws NoSuchFieldException     sometimes
+     * @throws IllegalAccessException   sometimes
      * @throws IllegalArgumentException sometimes
      */
     @Test
     public final void testBuild() throws NoSuchFieldException, IllegalArgumentException,
             IllegalAccessException {
         TestStruct struct = new SimpleStructBuilder<>(TestStruct.class)
-            .set("testShort", NUMBER)
-            .set("testByte", NUMBER)
-            .set("testEmbeddedStruct", new SimpleStructBuilder<>(TestEmbeddedStruct.class)
-                .set("embeddedShort", NUMBER)
-                .set("embedded", ARRAY)
-                .build())
-            .set("testVariableStruct", new SimpleStructBuilder<>(TestVariableStruct.class)
-                .set("testArray", ARRAY)
-                .build())
-            .build();
+                .set("testShort", NUMBER)
+                .set("testByte", NUMBER)
+                .set("testEmbeddedStruct", new SimpleStructBuilder<>(TestEmbeddedStruct.class)
+                        .set("embeddedShort", NUMBER)
+                        .set("embedded", ARRAY)
+                        .build())
+                .set("testVariableStruct", new SimpleStructBuilder<>(TestVariableStruct.class)
+                        .set("testArray", ARRAY)
+                        .build())
+                .build();
 
         assertEquals(NUMBER, struct.getTestShort());
         assertEquals(NUMBER, struct.getTestByte());