lowered required Java version to Java 7

Author: DevCybran

.classpath

@@ -12,7 +12,7 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>

pom.xml

@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>de.ntcomputer.crypto</groupId>
 	<artifactId>eddsa</artifactId>
-	<version>1.0.1-SNAPSHOT</version>
+	<version>1.0.0</version>
 	<name>ed25519-java</name>
 	<description>Implementation of EdDSA in Java including simplified access interfaces</description>
 	<url>https://github.com/DevCybran/ed25519-java</url>
@@ -47,8 +47,8 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<configuration>
-					<source>1.8</source>
-					<target>1.8</target>
+					<source>1.7</source>
+					<target>1.7</target>
 					<encoding>${project.build.sourceEncoding}</encoding>
 				</configuration>
 				<version>3.1</version>

src/de/ntcomputer/crypto/eddsa/Ed25519PrivateKey.java

@@ -26,8 +26,6 @@
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.PBEKeySpec;
 import javax.crypto.spec.SecretKeySpec;
-import javax.security.auth.DestroyFailedException;
-import javax.security.auth.Destroyable;
 
 import de.ntcomputer.crypto.hash.HashCondenser;
 import de.ntcomputer.crypto.hash.ProgressListener;
@@ -49,7 +47,7 @@
  * @author DevCybran
  *
  */
-public class Ed25519PrivateKey implements Destroyable {
+public class Ed25519PrivateKey {
 	static final EdDSAParameterSpec P_SPEC = EdDSANamedCurveTable.getByName(EdDSANamedCurveTable.CURVE_ED25519_SHA512);
 	private static SecureRandom random = null;
 	private final EdDSAPrivateKey key;
@@ -134,11 +132,6 @@ public static Ed25519PrivateKey loadFromString(String privateKeyString, char[] p
 			throw new RuntimeException(e);
 		} catch (BadPaddingException e) {
 			throw new InvalidKeyException("the supplied private key is corrupted or the password is wrong", e);
-		} finally {
-			try {
-				key.destroy();
-			} catch (DestroyFailedException e) {
-			}
 		}
 	}
 
@@ -211,11 +204,6 @@ public String saveAsString(char[] password) throws IllegalArgumentException, NoS
 			return Utils.bytesToHex(salt) + Utils.bytesToHex(iv) + Utils.bytesToHex(encryptedKey);
 		} catch (InvalidKeyException | IllegalBlockSizeException | BadPaddingException | InvalidAlgorithmParameterException e) {
 			throw new RuntimeException(e);
-		} finally {
-			try {
-				key.destroy();
-			} catch (DestroyFailedException e) {
-			}
 		}
 	}
 
@@ -334,14 +322,4 @@ public void signToFile(File source, File signatureFile, ProgressListener listene
 		Files.write(signatureFile.toPath(), signature.getBytes(StandardCharsets.UTF_8));
 	}
 
-	@Override
-	public void destroy() throws DestroyFailedException {
-		this.key.destroy();
-	}
-
-	@Override
-	public boolean isDestroyed() {
-		return this.key.isDestroyed();
-	}
-
 }

src/de/ntcomputer/crypto/hash/ProgressListener.java

@@ -1,6 +1,5 @@
 package de.ntcomputer.crypto.hash;
 
-@FunctionalInterface
 public interface ProgressListener {
 
 	public void onProgress(long progress, long limit);