Implemented ECEIS.

Author: joshmg

build.gradle

@@ -18,16 +18,15 @@ dependencies {
     implementation group: 'org.bouncycastle',           name: 'bcprov-jdk15on',         version: '1.62'
     implementation group: 'org.bouncycastle',           name: 'bcpg-jdk15on',           version: '1.62'
 
-    implementation group: 'com.github.softwareverde',   name: 'java-util',              version: 'v2.1.0'
+    implementation group: 'com.github.softwareverde',   name: 'java-util',              version: 'v2.1.3'
     implementation group: 'com.github.softwareverde',   name: 'java-logging',           version: 'v2.1.0'
 
     implementation group: 'commons-codec',              name: 'commons-codec',          version: '1.13'
 
-    testCompile group: 'junit', name: 'junit', version: '4.12'
+    testImplementation group: 'junit', name: 'junit', version: '4.12'
 }
 
 test {
     maxHeapSize = "4096m"
-    jvmArgs "-XX:MaxPermSize=4096m"
     jvmArgs "-XX:MaxMetaspaceSize=4096m"
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,6 @@
+#Fri May 15 17:54:33 EDT 2020
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.4.1-all.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-bin.zip
-zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -1,5 +1,21 @@
 #!/usr/bin/env sh
 
+#
+# Copyright 2015 the original author or authors.
+#
+# 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
+#
+#      https://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.
+#
+
 ##############################################################################
 ##
 ##  Gradle start up script for UN*X
@@ -28,7 +44,7 @@ APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m"'
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
@@ -66,6 +82,7 @@ esac
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -109,10 +126,11 @@ if $darwin; then
     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
 fi
 
-# For Cygwin, switch paths to Windows format before running java
-if $cygwin ; then
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
@@ -138,19 +156,19 @@ if $cygwin ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=$((i+1))
+        i=`expr $i + 1`
     done
     case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -159,14 +177,9 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=$(save "$@")
+APP_ARGS=`save "$@"`
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
 exec "$JAVACMD" "$@"

gradlew.bat

@@ -1,3 +1,19 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
 @if "%DEBUG%" == "" @echo off
 @rem ##########################################################################
 @rem
@@ -13,8 +29,11 @@ if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m"
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
@@ -65,6 +84,7 @@ set CMD_LINE_ARGS=%*
 
 set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
+
 @rem Execute Gradle
 "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
 

src/main/java/com/softwareverde/security/hash/sha512/ImmutableSha512Hash.java

@@ -0,0 +1,56 @@
+package com.softwareverde.security.hash.sha512;
+
+import com.softwareverde.constable.Const;
+import com.softwareverde.logging.Logger;
+import com.softwareverde.security.hash.ImmutableHash;
+import com.softwareverde.util.ByteUtil;
+import com.softwareverde.util.HexUtil;
+
+public class ImmutableSha512Hash extends ImmutableHash implements Sha512Hash, Const {
+    public static ImmutableSha512Hash fromHexString(final String hexString) {
+        if (hexString == null) { return null; }
+
+        final byte[] hashBytes = HexUtil.hexStringToByteArray(hexString);
+        if (hashBytes == null) { return null; }
+        if (hashBytes.length != BYTE_COUNT) { return null; }
+
+        return new ImmutableSha512Hash(hashBytes);
+    }
+
+    public static ImmutableSha512Hash copyOf(final byte[] bytes) {
+        if (bytes == null) { return null; }
+        if (bytes.length != BYTE_COUNT) {
+            Logger.warn("NOTICE: Unable to wrap bytes as hash. Invalid byte count: "+ bytes.length);
+            return null;
+        }
+        return new ImmutableSha512Hash(bytes);
+    }
+
+    protected ImmutableSha512Hash(final byte[] bytes) {
+        super(new byte[BYTE_COUNT]);
+
+        if (bytes.length != BYTE_COUNT) {
+            throw new RuntimeException("Invalid byte count: " + bytes.length);
+        }
+
+        ByteUtil.setBytes(_bytes, bytes);
+    }
+
+    public ImmutableSha512Hash() {
+        super(new byte[BYTE_COUNT]);
+    }
+
+    public ImmutableSha512Hash(final Sha512Hash hash) {
+        super(hash);
+    }
+
+    @Override
+    public MutableSha512Hash toReversedEndian() {
+        return MutableSha512Hash.wrap(ByteUtil.reverseEndian(_bytes));
+    }
+
+    @Override
+    public ImmutableSha512Hash asConst() {
+        return this;
+    }
+}

src/main/java/com/softwareverde/security/hash/sha512/MutableSha512Hash.java

@@ -0,0 +1,77 @@
+package com.softwareverde.security.hash.sha512;
+
+import com.softwareverde.logging.Logger;
+import com.softwareverde.security.hash.MutableHash;
+import com.softwareverde.util.ByteUtil;
+import com.softwareverde.util.HexUtil;
+
+public class MutableSha512Hash extends MutableHash implements Sha512Hash {
+    public static MutableSha512Hash fromHexString(final String hexString) {
+        if (hexString == null) { return null; }
+
+        final byte[] hashBytes = HexUtil.hexStringToByteArray(hexString);
+        return MutableSha512Hash.wrap(hashBytes);
+    }
+
+    public static MutableSha512Hash wrap(final byte[] bytes) {
+        if (bytes == null) { return null; }
+
+        if (bytes.length != BYTE_COUNT) {
+            Logger.warn("NOTICE: Unable to wrap bytes as hash. Invalid byte count: " + bytes.length);
+            return null;
+        }
+        return new MutableSha512Hash(bytes);
+    }
+
+    public static MutableSha512Hash copyOf(final byte[] bytes) {
+        if (bytes == null) { return null; }
+
+        if (bytes.length != BYTE_COUNT) {
+            Logger.warn("NOTICE: Unable to wrap bytes as hash. Invalid byte count: " + bytes.length);
+            return null;
+        }
+        return new MutableSha512Hash(ByteUtil.copyBytes(bytes));
+    }
+
+    protected MutableSha512Hash(final byte[] bytes) {
+        super(bytes);
+
+        if (bytes.length != BYTE_COUNT) {
+            throw new RuntimeException("Invalid byte count: " + bytes.length);
+        }
+    }
+
+    public MutableSha512Hash() {
+        super(BYTE_COUNT);
+    }
+
+    public MutableSha512Hash(final Sha512Hash hash) {
+        super(hash);
+    }
+
+    @Override
+    public MutableSha512Hash toReversedEndian() {
+        return MutableSha512Hash.wrap(ByteUtil.reverseEndian(_bytes));
+    }
+
+    public void setBytes(final byte[] bytes) {
+        if (bytes.length != BYTE_COUNT) {
+            Logger.warn("NOTICE: Attempted to set hash bytes of incorrect length: " + bytes.length);
+            return;
+        }
+
+        if (_bytes.length != bytes.length) {
+            _bytes = new byte[bytes.length];
+        }
+        ByteUtil.setBytes(_bytes, bytes);
+    }
+
+    public void setBytes(final Sha512Hash hash) {
+        ByteUtil.setBytes(_bytes, hash.getBytes());
+    }
+
+    @Override
+    public ImmutableSha512Hash asConst() {
+        return new ImmutableSha512Hash(this);
+    }
+}

src/main/java/com/softwareverde/security/hash/sha512/Sha512Hash.java

@@ -0,0 +1,48 @@
+package com.softwareverde.security.hash.sha512;
+
+import com.softwareverde.security.hash.Hash;
+import com.softwareverde.util.ByteUtil;
+
+import java.util.Comparator;
+
+public interface Sha512Hash extends Hash, Comparable<Sha512Hash> {
+    Comparator<Sha512Hash> COMPARATOR = new Comparator<Sha512Hash>() {
+        @Override
+        public int compare(final Sha512Hash hash0, final Sha512Hash hash1) {
+            for (int i = 0; i < BYTE_COUNT; ++i) {
+                final int b0 = ByteUtil.byteToInteger(hash0.getByte(i));
+                final int b1 = ByteUtil.byteToInteger(hash1.getByte(i));
+
+                if (b0 < b1) { return -1; }
+                if (b0 > b1) { return 1; }
+            }
+            return 0;
+        }
+    };
+
+    static Sha512Hash fromHexString(final String hexString) {
+        return ImmutableSha512Hash.fromHexString(hexString);
+    }
+
+    static Sha512Hash copyOf(final byte[] bytes) {
+        return ImmutableSha512Hash.copyOf(bytes);
+    }
+
+    static Sha512Hash wrap(final byte[] bytes) {
+        return MutableSha512Hash.wrap(bytes);
+    }
+
+    Integer BYTE_COUNT = 64;
+    ImmutableSha512Hash EMPTY_HASH = new ImmutableSha512Hash();
+
+    @Override
+    Sha512Hash toReversedEndian();
+
+    @Override
+    ImmutableSha512Hash asConst();
+
+    @Override
+    default int compareTo(final Sha512Hash sha512Hash) {
+        return COMPARATOR.compare(this, sha512Hash);
+    }
+}