Clean up now that implementation is Native only.

platform-android/CMakeLists.txt

@@ -5,6 +5,10 @@ add_library( mpw SHARED
     "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/base64.c"
     "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/aes.c"
     "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-algorithm.c"
+    "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-algorithm_v0.c"
+    "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-algorithm_v1.c"
+    "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-algorithm_v2.c"
+    "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-algorithm_v3.c"
     "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-types.c"
     "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-util.c"
     "${PROJECT_SOURCE_DIR}/../platform-independent/c/core/src/mpw-marshal-util.c"

platform-android/src/main/java/com/lyndir/masterpassword/EmergencyActivity.java

@@ -316,8 +316,8 @@ public class EmergencyActivity extends Activity {
             @Override
             public void run() {
                 try {
-                    sitePassword = masterKey.siteResult( siteName, version.getAlgorithm(), counter,
+                    sitePassword = masterKey.siteResult(
-                                                         MPKeyPurpose.Authentication, null, type, null );
+                            siteName, version, counter, MPKeyPurpose.Authentication, null, type, null );
 
                     runOnUiThread( new Runnable() {
                         @Override

platform-android/src/main/java/com/lyndir/masterpassword/Preferences.java

@@ -149,7 +149,7 @@ public final class Preferences {
     @Nonnull
     public MPResultType getDefaultResultType() {
         return MPResultType.values()[
-                prefs().getInt( PREF_RESULT_TYPE, getDefaultVersion().getAlgorithm().mpw_default_result_type().ordinal() )];
+                prefs().getInt( PREF_RESULT_TYPE, getDefaultVersion().mpw_default_result_type().ordinal() )];
     }
 
     public boolean setDefaultVersion(final MPAlgorithm.Version value) {

platform-independent/c/core/src/java/com_lyndir_masterpassword_MPAlgorithm_Version.h

@@ -0,0 +1,47 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class com_lyndir_masterpassword_MPAlgorithm_Version */
+
+#ifndef _Included_com_lyndir_masterpassword_MPAlgorithm_Version
+#define _Included_com_lyndir_masterpassword_MPAlgorithm_Version
+#ifdef __cplusplus
+extern "C" {
+#endif
+#undef com_lyndir_masterpassword_MPAlgorithm_Version_AES_BLOCKSIZE
+#define com_lyndir_masterpassword_MPAlgorithm_Version_AES_BLOCKSIZE 128L
+/*
+ * Class:     com_lyndir_masterpassword_MPAlgorithm_Version
+ * Method:    _masterKey
+ * Signature: (Ljava/lang/String;[BI)[B
+ */
+JNIEXPORT jbyteArray JNICALL Java_com_lyndir_masterpassword_MPAlgorithm_00024Version__1masterKey
+  (JNIEnv *, jobject, jstring, jbyteArray, jint);
+
+/*
+ * Class:     com_lyndir_masterpassword_MPAlgorithm_Version
+ * Method:    _siteKey
+ * Signature: ([BLjava/lang/String;JILjava/lang/String;I)[B
+ */
+JNIEXPORT jbyteArray JNICALL Java_com_lyndir_masterpassword_MPAlgorithm_00024Version__1siteKey
+  (JNIEnv *, jobject, jbyteArray, jstring, jlong, jint, jstring, jint);
+
+/*
+ * Class:     com_lyndir_masterpassword_MPAlgorithm_Version
+ * Method:    _siteResult
+ * Signature: ([B[BLjava/lang/String;JILjava/lang/String;ILjava/lang/String;I)Ljava/lang/String;
+ */
+JNIEXPORT jstring JNICALL Java_com_lyndir_masterpassword_MPAlgorithm_00024Version__1siteResult
+  (JNIEnv *, jobject, jbyteArray, jbyteArray, jstring, jlong, jint, jstring, jint, jstring, jint);
+
+/*
+ * Class:     com_lyndir_masterpassword_MPAlgorithm_Version
+ * Method:    _siteState
+ * Signature: ([B[BLjava/lang/String;JILjava/lang/String;ILjava/lang/String;I)Ljava/lang/String;
+ */
+JNIEXPORT jstring JNICALL Java_com_lyndir_masterpassword_MPAlgorithm_00024Version__1siteState
+  (JNIEnv *, jobject, jbyteArray, jbyteArray, jstring, jlong, jint, jstring, jint, jstring, jint);
+
+#ifdef __cplusplus
+}
+#endif
+#endif

platform-independent/c/core/src/java/com_lyndir_masterpassword_impl_MPAlgorithmV0.h

@@ -1,47 +0,0 @@
-/* DO NOT EDIT THIS FILE - it is machine generated */
-#include <jni.h>
-/* Header for class com_lyndir_masterpassword_impl_MPAlgorithmV0 */
-
-#ifndef _Included_com_lyndir_masterpassword_impl_MPAlgorithmV0
-#define _Included_com_lyndir_masterpassword_impl_MPAlgorithmV0
-#ifdef __cplusplus
-extern "C" {
-#endif
-#undef com_lyndir_masterpassword_impl_MPAlgorithmV0_AES_BLOCKSIZE
-#define com_lyndir_masterpassword_impl_MPAlgorithmV0_AES_BLOCKSIZE 128L
-/*
- * Class:     com_lyndir_masterpassword_impl_MPAlgorithmV0
- * Method:    _masterKey
- * Signature: (Ljava/lang/String;[BI)[B
- */
-JNIEXPORT jbyteArray JNICALL Java_com_lyndir_masterpassword_impl_MPAlgorithmV0__1masterKey
-  (JNIEnv *, jobject, jstring, jbyteArray, jint);
-
-/*
- * Class:     com_lyndir_masterpassword_impl_MPAlgorithmV0
- * Method:    _siteKey
- * Signature: ([BLjava/lang/String;JILjava/lang/String;I)[B
- */
-JNIEXPORT jbyteArray JNICALL Java_com_lyndir_masterpassword_impl_MPAlgorithmV0__1siteKey
-  (JNIEnv *, jobject, jbyteArray, jstring, jlong, jint, jstring, jint);
-
-/*
- * Class:     com_lyndir_masterpassword_impl_MPAlgorithmV0
- * Method:    _siteResult
- * Signature: ([B[BLjava/lang/String;JILjava/lang/String;ILjava/lang/String;I)Ljava/lang/String;
- */
-JNIEXPORT jstring JNICALL Java_com_lyndir_masterpassword_impl_MPAlgorithmV0__1siteResult
-  (JNIEnv *, jobject, jbyteArray, jbyteArray, jstring, jlong, jint, jstring, jint, jstring, jint);
-
-/*
- * Class:     com_lyndir_masterpassword_impl_MPAlgorithmV0
- * Method:    _siteState
- * Signature: ([B[BLjava/lang/String;JILjava/lang/String;ILjava/lang/String;I)Ljava/lang/String;
- */
-JNIEXPORT jstring JNICALL Java_com_lyndir_masterpassword_impl_MPAlgorithmV0__1siteState
-  (JNIEnv *, jobject, jbyteArray, jbyteArray, jstring, jlong, jint, jstring, jint, jstring, jint);
-
-#ifdef __cplusplus
-}
-#endif
-#endif

platform-independent/c/core/src/mpw-jni.c

@@ -1,6 +1,6 @@
 #include <string.h>
 
-#include "java/com_lyndir_masterpassword_impl_MPAlgorithmV0.h"
+#include "java/com_lyndir_masterpassword_MPAlgorithm_Version.h"
 
 #include "mpw-algorithm.h"
 #include "mpw-util.h"

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/MPAlgorithm.java

@@ -22,12 +22,15 @@ import static com.lyndir.lhunath.opal.system.util.StringUtils.strf;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonValue;
+import com.google.common.base.Charsets;
 import com.google.common.primitives.UnsignedInteger;
 import com.lyndir.lhunath.opal.system.MessageAuthenticationDigests;
 import com.lyndir.lhunath.opal.system.MessageDigests;
+import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.masterpassword.impl.*;
-import java.nio.ByteOrder;
+import java.nio.*;
-import java.nio.charset.Charset;
+import java.nio.charset.*;
+import java.util.Arrays;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
@@ -36,7 +39,7 @@ import javax.annotation.Nullable;
  * @see Version
  */
 @SuppressWarnings({ "FieldMayBeStatic", "NewMethodNamingConvention", "MethodReturnAlwaysConstant" })
-public abstract class MPAlgorithm {
+public interface MPAlgorithm {
 
     /**
      * Derive a master key that describes a user's identity.
@@ -45,7 +48,7 @@ public abstract class MPAlgorithm {
      * @param masterPassword The user's secret that authenticates his access to the identity.
      */
     @Nullable
-    public abstract byte[] masterKey(String fullName, char[] masterPassword);
+    byte[] masterKey(String fullName, char[] masterPassword);
 
     /**
      * Derive a site key that describes a user's access to a specific entity.
@@ -57,7 +60,7 @@ public abstract class MPAlgorithm {
      * @param keyContext  An action-specific context within which to scope the key.
      */
     @Nullable
-    public abstract byte[] siteKey(byte[] masterKey, String siteName, UnsignedInteger siteCounter,
+    byte[] siteKey(byte[] masterKey, String siteName, UnsignedInteger siteCounter,
                    MPKeyPurpose keyPurpose, @Nullable String keyContext);
 
     /**
@@ -67,7 +70,7 @@ public abstract class MPAlgorithm {
      * @param resultParam A parameter that provides contextual data specific to the type template.
      */
     @Nullable
-    public abstract String siteResult(byte[] masterKey, byte[] siteKey, String siteName, UnsignedInteger siteCounter,
+    String siteResult(byte[] masterKey, byte[] siteKey, String siteName, UnsignedInteger siteCounter,
                       MPKeyPurpose keyPurpose, @Nullable String keyContext,
                       MPResultType resultType, @Nullable String resultParam);
 
@@ -80,7 +83,7 @@ public abstract class MPAlgorithm {
      * @param resultParam A parameter that provides contextual data specific to the type template.
      */
     @Nullable
-    public abstract String siteState(byte[] masterKey, byte[] siteKey, String siteName, UnsignedInteger siteCounter,
+    String siteState(byte[] masterKey, byte[] siteKey, String siteName, UnsignedInteger siteCounter,
                      MPKeyPurpose keyPurpose, @Nullable String keyContext,
                      MPResultType resultType, String resultParam);
 
@@ -90,115 +93,105 @@ public abstract class MPAlgorithm {
      * The linear version identifier of this algorithm's implementation.
      */
     @Nonnull
-    public abstract Version version();
+    Version version();
 
     /**
      * mpw: defaults: initial counter value.
      */
     @Nonnull
-    public abstract UnsignedInteger mpw_default_counter();
+    UnsignedInteger mpw_default_counter();
 
     /**
      * mpw: defaults: password result type.
      */
     @Nonnull
-    public abstract MPResultType mpw_default_result_type();
+    MPResultType mpw_default_result_type();
 
     /**
      * mpw: defaults: login result type.
      */
     @Nonnull
-    public abstract MPResultType mpw_default_login_type();
+    MPResultType mpw_default_login_type();
 
     /**
      * mpw: defaults: answer result type.
      */
     @Nonnull
-    public abstract MPResultType mpw_default_answer_type();
+    MPResultType mpw_default_answer_type();
 
     /**
      * mpw: Input character encoding.
      */
     @Nonnull
-    public abstract Charset mpw_charset();
+    Charset mpw_charset();
 
     /**
      * mpw: Platform-agnostic byte order.
      */
     @Nonnull
-    public abstract ByteOrder mpw_byteOrder();
+    ByteOrder mpw_byteOrder();
 
     /**
      * mpw: Key ID hash.
      */
     @Nonnull
-    public abstract MessageDigests mpw_hash();
+    MessageDigests mpw_hash();
 
     /**
      * mpw: Site digest.
      */
     @Nonnull
-    public abstract MessageAuthenticationDigests mpw_digest();
+    MessageAuthenticationDigests mpw_digest();
 
     /**
      * mpw: Master key size (byte).
      */
-    public abstract int mpw_dkLen();
+    int mpw_dkLen();
 
     /**
      * mpw: Minimum size for derived keys (bit).
      */
-    public abstract int mpw_keySize_min();
+    int mpw_keySize_min();
 
     /**
      * mpw: Maximum size for derived keys (bit).
      */
-    public abstract int mpw_keySize_max();
+    int mpw_keySize_max();
 
     /**
      * mpw: validity for the time-based rolling counter (s).
      */
-    public abstract long mpw_otp_window();
+    long mpw_otp_window();
 
     /**
      * scrypt: CPU cost parameter.
      */
-    public abstract int scrypt_N();
+    int scrypt_N();
 
     /**
      * scrypt: Memory cost parameter.
      */
-    public abstract int scrypt_r();
+    int scrypt_r();
 
     /**
      * scrypt: Parallelization parameter.
      */
-    public abstract int scrypt_p();
+    int scrypt_p();
 
     // Utilities
 
-    @Nonnull
+    byte[] toBytes(final int number);
-    protected abstract byte[] toBytes(int number);
 
-    @Nonnull
+    byte[] toBytes(final UnsignedInteger number);
-    protected abstract byte[] toBytes(UnsignedInteger number);
 
-    @Nonnull
+    byte[] toBytes(final char[] characters);
-    protected abstract byte[] toBytes(char[] characters);
 
-    @Nonnull
+    byte[] toID(final byte[] bytes);
-    protected abstract byte[] toID(byte[] bytes);
-
-    @Override
-    public String toString() {
-        
-        return strf( "%d, %s", version().toInt(), getClass().getSimpleName() );
-    }
 
     /**
      * The algorithm iterations.
      */
-    public enum Version {
+    enum Version implements  MPAlgorithm {
 
         /**
          * bugs:
@@ -206,38 +199,38 @@ public abstract class MPAlgorithm {
          * - miscounted the byte-length for multi-byte site names.
          * - miscounted the byte-length for multi-byte user names.
          */
-        V0( new MPAlgorithmV0() ),
+        V0,
 
         /**
          * bugs:
          * - miscounted the byte-length for multi-byte site names.
          * - miscounted the byte-length for multi-byte user names.
          */
-        V1( new MPAlgorithmV1() ),
+        V1,
 
         /**
          * bugs:
          * - miscounted the byte-length for multi-byte user names.
          */
-        V2( new MPAlgorithmV2() ),
+        V2,
 
         /**
          * bugs:
          * - no known issues.
          */
-        V3( new MPAlgorithmV3() );
+        V3;
 
         public static final Version CURRENT = V3;
 
-        private final MPAlgorithm algorithm;
+        @SuppressWarnings("HardcodedFileSeparator")
+        private static final String AES_TRANSFORMATION = "AES/CBC/PKCS5Padding";
+        private static final int    AES_BLOCKSIZE      = 128 /* bit */;
 
-        Version(final MPAlgorithm algorithm) {
+        static {
-            this.algorithm = algorithm;
+            Native.load( MPAlgorithm.class, "mpw" );
         }
 
-        public MPAlgorithm getAlgorithm() {
+        protected final Logger logger = Logger.get( getClass() );
-            return algorithm;
-        }
 
         @JsonCreator
         public static Version fromInt(final int algorithmVersion) {
@@ -250,5 +243,207 @@ public abstract class MPAlgorithm {
 
             return ordinal();
         }
+
+        @Override
+        public String toString() {
+
+            return strf( "%d, %s", version().toInt(), getClass().getSimpleName() );
+        }
+
+        @Nullable
+        @Override
+        public byte[] masterKey(final String fullName, final char[] masterPassword) {
+
+            // Create a memory-safe NUL-terminated UTF-8 C-string byte array variant of masterPassword.
+            CharsetEncoder encoder             = mpw_charset().newEncoder();
+            byte[]         masterPasswordBytes = new byte[(int) (masterPassword.length * (double) encoder.maxBytesPerChar()) + 1];
+            try {
+                Arrays.fill( masterPasswordBytes, (byte) 0 );
+                ByteBuffer masterPasswordBuffer = ByteBuffer.wrap( masterPasswordBytes );
+
+                CoderResult result = encoder.encode( CharBuffer.wrap( masterPassword ), masterPasswordBuffer, true );
+                if (result.isError())
+                    throw new IllegalStateException( result.toString() );
+                result = encoder.flush( masterPasswordBuffer );
+                if (result.isError())
+                    throw new IllegalStateException( result.toString() );
+
+                return _masterKey( fullName, masterPasswordBytes, version().toInt() );
+            }
+            finally {
+                Arrays.fill( masterPasswordBytes, (byte) 0 );
+            }
+        }
+
+        @Nullable
+        protected native byte[] _masterKey(final String fullName, final byte[] masterPassword, final int algorithmVersion);
+
+        @Nullable
+        @Override
+        public byte[] siteKey(final byte[] masterKey, final String siteName, final UnsignedInteger siteCounter,
+                              final MPKeyPurpose keyPurpose, @Nullable final String keyContext) {
+
+            return _siteKey( masterKey, siteName, siteCounter.longValue(), keyPurpose.toInt(), keyContext, version().toInt() );
+        }
+
+        @Nullable
+        protected native byte[] _siteKey(final byte[] masterKey, final String siteName, final long siteCounter,
+                                         final int keyPurpose, @Nullable final String keyContext, final int version);
+
+        @Nullable
+        @Override
+        public String siteResult(final byte[] masterKey, final byte[] siteKey, final String siteName, final UnsignedInteger siteCounter,
+                                 final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+                                 final MPResultType resultType, @Nullable final String resultParam) {
+
+            return _siteResult( masterKey, siteKey, siteName, siteCounter.longValue(),
+                                keyPurpose.toInt(), keyContext, resultType.getType(), resultParam, version().toInt() );
+        }
+
+        @Nullable
+        protected native String _siteResult(final byte[] masterKey, final byte[] siteKey, final String siteName, final long siteCounter,
+                                            final int keyPurpose, @Nullable final String keyContext,
+                                            final int resultType, @Nullable final String resultParam, final int algorithmVersion);
+
+        @Nullable
+        @Override
+        public String siteState(final byte[] masterKey, final byte[] siteKey, final String siteName, final UnsignedInteger siteCounter,
+                                final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+                                final MPResultType resultType, final String resultParam) {
+
+            return _siteState( masterKey, siteKey, siteName, siteCounter.longValue(),
+                               keyPurpose.toInt(), keyContext, resultType.getType(), resultParam, version().toInt() );
+        }
+
+        @Nullable
+        protected native String _siteState(final byte[] masterKey, final byte[] siteKey, final String siteName, final long siteCounter,
+                                           final int keyPurpose, @Nullable final String keyContext,
+                                           final int resultType, final String resultParam, final int algorithmVersion);
+
+        // Configuration
+
+        @Nonnull
+        @Override
+        public Version version() {
+            return MPAlgorithm.Version.V0;
+        }
+
+        @Nonnull
+        @Override
+        public UnsignedInteger mpw_default_counter() {
+            return UnsignedInteger.ONE;
+        }
+
+        @Nonnull
+        @Override
+        public MPResultType mpw_default_result_type() {
+            return MPResultType.GeneratedLong;
+        }
+
+        @Nonnull
+        @Override
+        public MPResultType mpw_default_login_type() {
+            return MPResultType.GeneratedName;
+        }
+
+        @Nonnull
+        @Override
+        public MPResultType mpw_default_answer_type() {
+            return MPResultType.GeneratedPhrase;
+        }
+
+        @Nonnull
+        @Override
+        public Charset mpw_charset() {
+            return Charsets.UTF_8;
+        }
+
+        @Nonnull
+        @Override
+        public ByteOrder mpw_byteOrder() {
+            return ByteOrder.BIG_ENDIAN;
+        }
+
+        @Nonnull
+        @Override
+        public MessageDigests mpw_hash() {
+            return MessageDigests.SHA256;
+        }
+
+        @Nonnull
+        @Override
+        public MessageAuthenticationDigests mpw_digest() {
+            return MessageAuthenticationDigests.HmacSHA256;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public int mpw_dkLen() {
+            return 64;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public int mpw_keySize_min() {
+            return 128;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public int mpw_keySize_max() {
+            return 512;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public long mpw_otp_window() {
+            return 5 * 60 /* s */;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public int scrypt_N() {
+            return 32768;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public int scrypt_r() {
+            return 8;
+        }
+
+        @Override
+        @SuppressWarnings("MagicNumber")
+        public int scrypt_p() {
+            return 2;
+        }
+
+        // Utilities
+
+        @Nonnull
+        public byte[] toBytes(final int number) {
+            return ByteBuffer.allocate( Integer.SIZE / Byte.SIZE ).order( mpw_byteOrder() ).putInt( number ).array();
+        }
+
+        @Nonnull
+        public byte[] toBytes(final UnsignedInteger number) {
+            return ByteBuffer.allocate( Integer.SIZE / Byte.SIZE ).order( mpw_byteOrder() ).putInt( number.intValue() ).array();
+        }
+
+        @Nonnull
+        public byte[] toBytes(final char[] characters) {
+            ByteBuffer byteBuffer = mpw_charset().encode( CharBuffer.wrap( characters ) );
+
+            byte[] bytes = new byte[byteBuffer.remaining()];
+            byteBuffer.get( bytes );
+
+            Arrays.fill( byteBuffer.array(), (byte) 0 );
+            return bytes;
+        }
+
+        @Nonnull
+        public byte[] toID(final byte[] bytes) {
+            return mpw_hash().of( bytes );
+        }
     }
 }

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/impl/MPAlgorithmV0.java

@@ -1,250 +0,0 @@
-//==============================================================================
-// This file is part of Master Password.
-// Copyright (c) 2011-2017, Maarten Billemont.
-//
-// Master Password is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Master Password is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You can find a copy of the GNU General Public License in the
-// LICENSE file.  Alternatively, see <http://www.gnu.org/licenses/>.
-//==============================================================================
-
-package com.lyndir.masterpassword.impl;
-
-import com.google.common.base.Charsets;
-import com.google.common.primitives.UnsignedInteger;
-import com.lyndir.lhunath.opal.system.MessageAuthenticationDigests;
-import com.lyndir.lhunath.opal.system.MessageDigests;
-import com.lyndir.lhunath.opal.system.logging.Logger;
-import com.lyndir.masterpassword.*;
-import java.nio.*;
-import java.nio.charset.*;
-import java.util.Arrays;
-import javax.annotation.Nonnull;
-import javax.annotation.Nullable;
-
-
-/**
- * @author lhunath, 2014-08-30
- * @see MPAlgorithm.Version#V0
- */
-@SuppressWarnings("NewMethodNamingConvention")
-public class MPAlgorithmV0 extends MPAlgorithm {
-
-    @SuppressWarnings("HardcodedFileSeparator")
-    protected static final String AES_TRANSFORMATION = "AES/CBC/PKCS5Padding";
-    protected static final int    AES_BLOCKSIZE      = 128 /* bit */;
-
-    static {
-        Native.load( MPAlgorithmV0.class, "mpw" );
-    }
-
-    protected final Logger logger = Logger.get( getClass() );
-
-    @Nullable
-    @Override
-    public byte[] masterKey(final String fullName, final char[] masterPassword) {
-
-        // Create a memory-safe NUL-terminated UTF-8 C-string byte array variant of masterPassword.
-        CharsetEncoder encoder             = mpw_charset().newEncoder();
-        byte[]         masterPasswordBytes = new byte[(int) (masterPassword.length * (double) encoder.maxBytesPerChar()) + 1];
-        try {
-            Arrays.fill( masterPasswordBytes, (byte) 0 );
-            ByteBuffer masterPasswordBuffer = ByteBuffer.wrap( masterPasswordBytes );
-
-            CoderResult result = encoder.encode( CharBuffer.wrap( masterPassword ), masterPasswordBuffer, true );
-            if (result.isError())
-                throw new IllegalStateException( result.toString() );
-            result = encoder.flush( masterPasswordBuffer );
-            if (result.isError())
-                throw new IllegalStateException( result.toString() );
-
-            return _masterKey( fullName, masterPasswordBytes, version().toInt() );
-        }
-        finally {
-            Arrays.fill( masterPasswordBytes, (byte) 0 );
-        }
-    }
-
-    @Nullable
-    protected native byte[] _masterKey(final String fullName, final byte[] masterPassword, final int algorithmVersion);
-
-    @Nullable
-    @Override
-    public byte[] siteKey(final byte[] masterKey, final String siteName, final UnsignedInteger siteCounter,
-                          final MPKeyPurpose keyPurpose, @Nullable final String keyContext) {
-
-        return _siteKey( masterKey, siteName, siteCounter.longValue(), keyPurpose.toInt(), keyContext, version().toInt() );
-    }
-
-    @Nullable
-    protected native byte[] _siteKey(final byte[] masterKey, final String siteName, final long siteCounter,
-                                     final int keyPurpose, @Nullable final String keyContext, final int version);
-
-    @Nullable
-    @Override
-    public String siteResult(final byte[] masterKey, final byte[] siteKey, final String siteName, final UnsignedInteger siteCounter,
-                             final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
-                             final MPResultType resultType, @Nullable final String resultParam) {
-
-        return _siteResult( masterKey, siteKey, siteName, siteCounter.longValue(),
-                            keyPurpose.toInt(), keyContext, resultType.getType(), resultParam, version().toInt() );
-    }
-
-    @Nullable
-    protected native String _siteResult(final byte[] masterKey, final byte[] siteKey, final String siteName, final long siteCounter,
-                                        final int keyPurpose, @Nullable final String keyContext,
-                                        final int resultType, @Nullable final String resultParam, final int algorithmVersion);
-
-    @Nullable
-    @Override
-    public String siteState(final byte[] masterKey, final byte[] siteKey, final String siteName, final UnsignedInteger siteCounter,
-                            final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
-                            final MPResultType resultType, final String resultParam) {
-
-        return _siteState( masterKey, siteKey, siteName, siteCounter.longValue(),
-                           keyPurpose.toInt(), keyContext, resultType.getType(), resultParam, version().toInt() );
-    }
-
-    @Nullable
-    protected native String _siteState(final byte[] masterKey, final byte[] siteKey, final String siteName, final long siteCounter,
-                                       final int keyPurpose, @Nullable final String keyContext,
-                                       final int resultType, final String resultParam, final int algorithmVersion);
-
-    // Configuration
-
-    @Nonnull
-    @Override
-    public Version version() {
-        return MPAlgorithm.Version.V0;
-    }
-
-    @Nonnull
-    @Override
-    public UnsignedInteger mpw_default_counter() {
-        return UnsignedInteger.ONE;
-    }
-
-    @Nonnull
-    @Override
-    public MPResultType mpw_default_result_type() {
-        return MPResultType.GeneratedLong;
-    }
-
-    @Nonnull
-    @Override
-    public MPResultType mpw_default_login_type() {
-        return MPResultType.GeneratedName;
-    }
-
-    @Nonnull
-    @Override
-    public MPResultType mpw_default_answer_type() {
-        return MPResultType.GeneratedPhrase;
-    }
-
-    @Nonnull
-    @Override
-    public Charset mpw_charset() {
-        return Charsets.UTF_8;
-    }
-
-    @Nonnull
-    @Override
-    public ByteOrder mpw_byteOrder() {
-        return ByteOrder.BIG_ENDIAN;
-    }
-
-    @Nonnull
-    @Override
-    public MessageDigests mpw_hash() {
-        return MessageDigests.SHA256;
-    }
-
-    @Nonnull
-    @Override
-    public MessageAuthenticationDigests mpw_digest() {
-        return MessageAuthenticationDigests.HmacSHA256;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public int mpw_dkLen() {
-        return 64;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public int mpw_keySize_min() {
-        return 128;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public int mpw_keySize_max() {
-        return 512;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public long mpw_otp_window() {
-        return 5 * 60 /* s */;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public int scrypt_N() {
-        return 32768;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public int scrypt_r() {
-        return 8;
-    }
-
-    @Override
-    @SuppressWarnings("MagicNumber")
-    public int scrypt_p() {
-        return 2;
-    }
-
-    // Utilities
-
-    @Nonnull
-    @Override
-    public byte[] toBytes(final int number) {
-        return ByteBuffer.allocate( Integer.SIZE / Byte.SIZE ).order( mpw_byteOrder() ).putInt( number ).array();
-    }
-
-    @Nonnull
-    @Override
-    public byte[] toBytes(final UnsignedInteger number) {
-        return ByteBuffer.allocate( Integer.SIZE / Byte.SIZE ).order( mpw_byteOrder() ).putInt( number.intValue() ).array();
-    }
-
-    @Nonnull
-    @Override
-    public byte[] toBytes(final char[] characters) {
-        ByteBuffer byteBuffer = mpw_charset().encode( CharBuffer.wrap( characters ) );
-
-        byte[] bytes = new byte[byteBuffer.remaining()];
-        byteBuffer.get( bytes );
-
-        Arrays.fill( byteBuffer.array(), (byte) 0 );
-        return bytes;
-    }
-
-    @Nonnull
-    @Override
-    public byte[] toID(final byte[] bytes) {
-        return mpw_hash().of( bytes );
-    }
-}

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/impl/MPAlgorithmV1.java

@@ -1,38 +0,0 @@
-//==============================================================================
-// This file is part of Master Password.
-// Copyright (c) 2011-2017, Maarten Billemont.
-//
-// Master Password is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Master Password is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You can find a copy of the GNU General Public License in the
-// LICENSE file.  Alternatively, see <http://www.gnu.org/licenses/>.
-//==============================================================================
-
-package com.lyndir.masterpassword.impl;
-
-import com.lyndir.masterpassword.*;
-import javax.annotation.Nonnull;
-
-
-/**
- * @author lhunath, 2014-08-30
- * @see Version#V1
- */
-public class MPAlgorithmV1 extends MPAlgorithmV0 {
-
-    // Configuration
-
-    @Nonnull
-    @Override
-    public Version version() {
-        return MPAlgorithm.Version.V1;
-    }
-}

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/impl/MPAlgorithmV2.java

@@ -1,38 +0,0 @@
-//==============================================================================
-// This file is part of Master Password.
-// Copyright (c) 2011-2017, Maarten Billemont.
-//
-// Master Password is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Master Password is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You can find a copy of the GNU General Public License in the
-// LICENSE file.  Alternatively, see <http://www.gnu.org/licenses/>.
-//==============================================================================
-
-package com.lyndir.masterpassword.impl;
-
-import com.lyndir.masterpassword.MPAlgorithm;
-import javax.annotation.Nonnull;
-
-
-/**
- * @author lhunath, 2014-08-30
- * @see Version#V2
- */
-public class MPAlgorithmV2 extends MPAlgorithmV1 {
-
-    // Configuration
-
-    @Nonnull
-    @Override
-    public Version version() {
-        return MPAlgorithm.Version.V2;
-    }
-}

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/impl/MPAlgorithmV3.java

@@ -1,38 +0,0 @@
-//==============================================================================
-// This file is part of Master Password.
-// Copyright (c) 2011-2017, Maarten Billemont.
-//
-// Master Password is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// Master Password is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-//
-// You can find a copy of the GNU General Public License in the
-// LICENSE file.  Alternatively, see <http://www.gnu.org/licenses/>.
-//==============================================================================
-
-package com.lyndir.masterpassword.impl;
-
-import com.lyndir.masterpassword.MPAlgorithm;
-import javax.annotation.Nonnull;
-
-
-/**
- * @author lhunath, 2014-08-30
- * @see Version#V3
- */
-public class MPAlgorithmV3 extends MPAlgorithmV2 {
-
-    // Configuration
-
-    @Nonnull
-    @Override
-    public Version version() {
-        return MPAlgorithm.Version.V3;
-    }
-}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoUser.java

@@ -30,7 +30,7 @@ import javax.annotation.Nullable;
 public class MPIncognitoUser extends MPBasicUser<MPIncognitoSite> {
 
     public MPIncognitoUser(final String fullName) {
-        super( fullName, MPAlgorithm.Version.CURRENT.getAlgorithm() );
+        super( fullName, MPAlgorithm.Version.CURRENT );
     }
 
     @Nullable

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/UserContentPanel.java

@@ -577,7 +577,7 @@ public class UserContentPanel extends JPanel implements State.Listener, MPUser.L
 
             components.add( Components.label( "Default Algorithm:" ),
                             Components.comboBox( MPAlgorithm.Version.values(), MPAlgorithm.Version::name,
-                                                 user.getAlgorithm().version(), version -> user.setAlgorithm( version.getAlgorithm() ) ) );
+                                                 user.getAlgorithm().version(), user::setAlgorithm ) );
 
             components.add( Components.label( "Default Password Type:" ),
                             Components.comboBox( MPResultType.values(), MPResultType::getLongName,
@@ -614,7 +614,7 @@ public class UserContentPanel extends JPanel implements State.Listener, MPUser.L
             components.add( Components.label( "Algorithm:" ),
                             Components.comboBox( MPAlgorithm.Version.values(), MPAlgorithm.Version::name,
                                                  site.getAlgorithm().version(),
-                                                 version -> site.setAlgorithm( version.getAlgorithm() ) ) );
+                                                 site::setAlgorithm ) );
 
             components.add( Components.label( "Counter:" ),
                             Components.spinner( new UnsignedIntegerModel( site.getCounter(), UnsignedInteger.ONE )

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileUser.java

@@ -59,7 +59,7 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
     }
 
     public MPFileUser(final String fullName, final File location) {
-        this( fullName, null, MPAlgorithm.Version.CURRENT.getAlgorithm(), location );
+        this( fullName, null, MPAlgorithm.Version.CURRENT, location );
     }
 
     public MPFileUser(final String fullName, @Nullable final byte[] keyID, final MPAlgorithm algorithm, final File location) {

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFlatUnmarshaller.java

@@ -68,7 +68,7 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                     else if ((fullName != null) && (keyID != null))
                         // Ends the header.
                         return new MPFileUser(
-                                fullName, keyID, MPAlgorithm.Version.fromInt( mpVersion ).getAlgorithm(), avatar, defaultType,
+                                fullName, keyID, MPAlgorithm.Version.fromInt( mpVersion ), avatar, defaultType,
                                 date, false, clearContent? MPMarshaller.ContentMode.VISIBLE: MPMarshaller.ContentMode.PROTECTED,
                                 MPMarshalFormat.Flat, file
                         );
@@ -157,7 +157,7 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                                 site = new MPFileSite(
                                         user, siteMatcher.group( 5 ),
                                         MPAlgorithm.Version.fromInt( ConversionUtils.toIntegerNN(
-                                                colon.matcher( siteMatcher.group( 4 ) ).replaceAll( "" ) ) ).getAlgorithm(),
+                                                colon.matcher( siteMatcher.group( 4 ) ).replaceAll( "" ) ) ),
                                         user.getAlgorithm().mpw_default_counter(),
                                         MPResultType.forType( ConversionUtils.toIntegerNN( siteMatcher.group( 3 ) ) ),
                                         clearContent? null: siteMatcher.group( 6 ),
@@ -171,7 +171,7 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                                 site = new MPFileSite(
                                         user, siteMatcher.group( 7 ),
                                         MPAlgorithm.Version.fromInt( ConversionUtils.toIntegerNN(
-                                                colon.matcher( siteMatcher.group( 4 ) ).replaceAll( "" ) ) ).getAlgorithm(),
+                                                colon.matcher( siteMatcher.group( 4 ) ).replaceAll( "" ) ) ),
                                         UnsignedInteger.valueOf(
                                                 colon.matcher( siteMatcher.group( 5 ) ).replaceAll( "" ) ),
                                         MPResultType.forType( ConversionUtils.toIntegerNN( siteMatcher.group( 3 ) ) ),

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPJSONFile.java

@@ -128,7 +128,7 @@ public class MPJSONFile extends MPJSONAnyObject {
     }
 
     MPFileUser readUser(final File file) {
-        MPAlgorithm algorithm = ifNotNullElse( user.algorithm, MPAlgorithm.Version.CURRENT ).getAlgorithm();
+        MPAlgorithm algorithm = ifNotNullElse( user.algorithm, MPAlgorithm.Version.CURRENT );
 
         return new MPFileUser(
                 user.full_name, CodeUtils.decodeHex( user.key_id ), algorithm, user.avatar,
@@ -146,7 +146,7 @@ public class MPJSONFile extends MPJSONAnyObject {
             String siteName = siteEntry.getKey();
             Site   fileSite = siteEntry.getValue();
             MPFileSite site = new MPFileSite(
-                    user, siteName, fileSite.algorithm.getAlgorithm(), UnsignedInteger.valueOf( fileSite.counter ),
+                    user, siteName, fileSite.algorithm, UnsignedInteger.valueOf( fileSite.counter ),
                     fileSite.type, export.redacted? fileSite.password: null,
                     fileSite.login_type, export.redacted? fileSite.login_name: null,
                     (fileSite._ext_mpw != null)? fileSite._ext_mpw.url: null, fileSite.uses,

platform-independent/java/tests/src/main/java/com/lyndir/masterpassword/MPTests.java

@@ -191,7 +191,7 @@ public class MPTests {
 
         @Nonnull
         public MPAlgorithm getAlgorithm() {
-            return MPAlgorithm.Version.fromInt( checkNotNull( algorithm ) ).getAlgorithm();
+            return MPAlgorithm.Version.fromInt( checkNotNull( algorithm ) );
         }
 
         @Nonnull

platform-independent/java/tests/src/test/java/com/lyndir/masterpassword/MPMasterKeyTest.java

@@ -106,9 +106,7 @@ public class MPMasterKeyTest {
 
         String       password   = randomString( 8 );
         MPResultType resultType = MPResultType.StoredPersonal;
-        for (final MPAlgorithm.Version version : MPAlgorithm.Version.values()) {
+        for (final MPAlgorithm.Version algorithm : MPAlgorithm.Version.values()) {
-            MPAlgorithm algorithm = version.getAlgorithm();
-
             // Test site state
             String state = masterKey.siteState( testCase.getSiteName(), algorithm, testCase.getSiteCounter(), testCase.getKeyPurpose(),
                                                 testCase.getKeyContext(), resultType, password );