diff --git a/ethereum/jsonrpc/build.gradle b/ethereum/jsonrpc/build.gradle
index e43ce6c06b..c74cbaa8ca 100644
--- a/ethereum/jsonrpc/build.gradle
+++ b/ethereum/jsonrpc/build.gradle
@@ -38,6 +38,8 @@ dependencies {
   implementation 'com.google.guava:guava'
   implementation 'io.vertx:vertx-core'
   implementation 'io.vertx:vertx-web'
+  implementation 'net.consensys.cava:cava-toml'
+  implementation 'org.springframework.security:spring-security-crypto'
 
   testImplementation project(':config')
   testImplementation project(path: ':config', configuration: 'testSupportArtifacts')
diff --git a/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuth.java b/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuth.java
new file mode 100644
index 0000000000..481e5127d5
--- /dev/null
+++ b/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuth.java
@@ -0,0 +1,154 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * 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 tech.pegasys.pantheon.ethereum.jsonrpc.authentication;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import io.vertx.core.AsyncResult;
+import io.vertx.core.Future;
+import io.vertx.core.Handler;
+import io.vertx.core.Vertx;
+import io.vertx.core.json.JsonObject;
+import io.vertx.ext.auth.AuthProvider;
+import io.vertx.ext.auth.User;
+import net.consensys.cava.toml.Toml;
+import net.consensys.cava.toml.TomlParseResult;
+import net.consensys.cava.toml.TomlTable;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.springframework.security.crypto.bcrypt.BCrypt;
+
+public class TomlAuth implements AuthProvider {
+
+  private static final Logger LOG = LogManager.getLogger();
+  private final Vertx vertx;
+  private final TomlAuthOptions options;
+
+  public TomlAuth(final Vertx vertx, final TomlAuthOptions options) {
+    this.vertx = vertx;
+    this.options = options;
+  }
+
+  @Override
+  public void authenticate(
+      final JsonObject authInfo, final Handler<AsyncResult<User>> resultHandler) {
+    final String username = authInfo.getString("username");
+    if (username == null) {
+      resultHandler.handle(Future.failedFuture("No username provided"));
+      return;
+    }
+
+    final String password = authInfo.getString("password");
+    if (password == null) {
+      resultHandler.handle(Future.failedFuture("No password provided"));
+      return;
+    }
+
+    LOG.debug("Authenticating user {} with password {}", username, password);
+
+    readUser(
+        username,
+        rs -> {
+          if (rs.succeeded()) {
+            TomlUser user = rs.result();
+            checkPasswordHash(
+                password,
+                user.getPassword(),
+                rs2 -> {
+                  if (rs2.succeeded()) {
+                    resultHandler.handle(Future.succeededFuture(user));
+                  } else {
+                    resultHandler.handle(Future.failedFuture(rs2.cause()));
+                  }
+                });
+          } else {
+            resultHandler.handle(Future.failedFuture(rs.cause()));
+          }
+        });
+  }
+
+  private void readUser(final String username, final Handler<AsyncResult<TomlUser>> resultHandler) {
+    vertx.executeBlocking(
+        f -> {
+          TomlParseResult parseResult;
+          try {
+            parseResult = Toml.parse(options.getTomlPath());
+          } catch (IOException e) {
+            f.fail(e);
+            return;
+          }
+
+          final TomlTable userData = parseResult.getTableOrEmpty("Users." + username);
+          if (userData.isEmpty()) {
+            f.fail("User not found");
+            return;
+          }
+
+          final TomlUser tomlUser = readTomlUserFromTable(username, userData);
+          if ("".equals(tomlUser.getPassword())) {
+            f.fail("No password set for user");
+            return;
+          }
+
+          f.complete(tomlUser);
+        },
+        res -> {
+          if (res.succeeded()) {
+            resultHandler.handle(Future.succeededFuture((TomlUser) res.result()));
+          } else {
+            resultHandler.handle(Future.failedFuture(res.cause()));
+          }
+        });
+  }
+
+  private TomlUser readTomlUserFromTable(final String username, final TomlTable userData) {
+    final String saltedAndHashedPassword = userData.getString("password", () -> "");
+    final List<String> groups =
+        userData
+            .getArrayOrEmpty("groups")
+            .toList()
+            .stream()
+            .map(Object::toString)
+            .collect(Collectors.toList());
+    final List<String> permissions =
+        userData
+            .getArrayOrEmpty("permissions")
+            .toList()
+            .stream()
+            .map(Object::toString)
+            .collect(Collectors.toList());
+    final List<String> roles =
+        userData
+            .getArrayOrEmpty("roles")
+            .toList()
+            .stream()
+            .map(Object::toString)
+            .collect(Collectors.toList());
+
+    return new TomlUser(username, saltedAndHashedPassword, groups, permissions, roles);
+  }
+
+  private void checkPasswordHash(
+      final String password,
+      final String passwordHash,
+      final Handler<AsyncResult<Void>> resultHandler) {
+    boolean passwordMatches = BCrypt.checkpw(password, passwordHash);
+    if (passwordMatches) {
+      resultHandler.handle(Future.succeededFuture());
+    } else {
+      resultHandler.handle(Future.failedFuture("Invalid password"));
+    }
+  }
+}
diff --git a/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuthOptions.java b/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuthOptions.java
new file mode 100644
index 0000000000..03f0257381
--- /dev/null
+++ b/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuthOptions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * 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 tech.pegasys.pantheon.ethereum.jsonrpc.authentication;
+
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import io.vertx.core.Vertx;
+import io.vertx.ext.auth.AuthOptions;
+import io.vertx.ext.auth.AuthProvider;
+
+public class TomlAuthOptions implements AuthOptions {
+
+  private Path tomlPath;
+
+  public TomlAuthOptions() {}
+
+  public TomlAuthOptions(final TomlAuthOptions that) {
+    tomlPath = that.tomlPath;
+  }
+
+  @Override
+  public AuthProvider createProvider(final Vertx vertx) {
+    return new TomlAuth(vertx, this);
+  }
+
+  @Override
+  public AuthOptions clone() {
+    return new TomlAuthOptions(this);
+  }
+
+  public TomlAuthOptions setTomlPath(final String tomlPath) {
+    this.tomlPath = Paths.get(tomlPath);
+    return this;
+  }
+
+  public Path getTomlPath() {
+    return tomlPath;
+  }
+}
diff --git a/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlUser.java b/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlUser.java
new file mode 100644
index 0000000000..b0012c5fe5
--- /dev/null
+++ b/ethereum/jsonrpc/src/main/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlUser.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * 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 tech.pegasys.pantheon.ethereum.jsonrpc.authentication;
+
+import java.util.List;
+
+import io.vertx.core.AsyncResult;
+import io.vertx.core.Handler;
+import io.vertx.core.json.JsonObject;
+import io.vertx.ext.auth.AbstractUser;
+import io.vertx.ext.auth.AuthProvider;
+
+public class TomlUser extends AbstractUser {
+
+  private final String username;
+  private final String password;
+  private final List<String> groups;
+  private final List<String> permissions;
+  private final List<String> roles;
+
+  TomlUser(
+      final String username,
+      final String password,
+      final List<String> groups,
+      final List<String> permissions,
+      final List<String> roles) {
+    this.username = username;
+    this.password = password;
+    this.groups = groups;
+    this.permissions = permissions;
+    this.roles = roles;
+  }
+
+  @Override
+  public JsonObject principal() {
+    return new JsonObject()
+        .put("username", username)
+        .put("password", password)
+        .put("groups", groups)
+        .put("permissions", permissions)
+        .put("roles", roles);
+  }
+
+  @Override
+  public void setAuthProvider(final AuthProvider authProvider) {
+    // we only use Toml for authentication
+    throw new UnsupportedOperationException("Not implemented");
+  }
+
+  @Override
+  protected void doIsPermitted(
+      final String permission, final Handler<AsyncResult<Boolean>> resultHandler) {
+    // we only use Toml for authentication
+    throw new UnsupportedOperationException("Not implemented");
+  }
+
+  public String getUsername() {
+    return username;
+  }
+
+  public String getPassword() {
+    return password;
+  }
+
+  public List<String> getGroups() {
+    return groups;
+  }
+
+  public List<String> getPermissions() {
+    return permissions;
+  }
+
+  public List<String> getRoles() {
+    return roles;
+  }
+}
diff --git a/ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuthTest.java b/ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuthTest.java
new file mode 100644
index 0000000000..b318f483f7
--- /dev/null
+++ b/ethereum/jsonrpc/src/test/java/tech/pegasys/pantheon/ethereum/jsonrpc/authentication/TomlAuthTest.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * 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 tech.pegasys.pantheon.ethereum.jsonrpc.authentication;
+
+import java.net.URISyntaxException;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.Paths;
+
+import io.vertx.core.Vertx;
+import io.vertx.core.json.JsonArray;
+import io.vertx.core.json.JsonObject;
+import io.vertx.ext.unit.TestContext;
+import io.vertx.ext.unit.junit.VertxUnitRunner;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(VertxUnitRunner.class)
+public class TomlAuthTest {
+
+  private Vertx vertx;
+  private JsonObject validAuthInfo;
+  private TomlAuth tomlAuth;
+
+  @Before
+  public void before(final TestContext context) throws URISyntaxException {
+    vertx = Vertx.vertx();
+    tomlAuth =
+        new TomlAuth(
+            vertx, new TomlAuthOptions().setTomlPath(getTomlPath("authentication/auth.toml")));
+    validAuthInfo = new JsonObject().put("username", "userA").put("password", "pegasys");
+  }
+
+  @Test
+  public void authInfoWithoutUsernameShouldFailAuthentication(final TestContext context) {
+    JsonObject authInfo = new JsonObject().put("password", "foo");
+
+    tomlAuth.authenticate(
+        authInfo,
+        context.asyncAssertFailure(
+            th -> context.assertEquals("No username provided", th.getMessage())));
+  }
+
+  @Test
+  public void authInfoWithoutPasswordShouldFailAuthentication(final TestContext context) {
+    JsonObject authInfo = new JsonObject().put("username", "foo");
+
+    tomlAuth.authenticate(
+        authInfo,
+        context.asyncAssertFailure(
+            th -> context.assertEquals("No password provided", th.getMessage())));
+  }
+
+  @Test
+  public void parseFailureWithIOExceptionShouldFailAuthentication(final TestContext context) {
+    tomlAuth = new TomlAuth(vertx, new TomlAuthOptions().setTomlPath("invalid_path"));
+
+    tomlAuth.authenticate(
+        validAuthInfo,
+        context.asyncAssertFailure(
+            th -> {
+              context.assertEquals(th.getClass(), NoSuchFileException.class);
+            }));
+  }
+
+  @Test
+  public void authInfoWithAbsentUserShouldFailAuthentication(final TestContext context) {
+    JsonObject authInfo = new JsonObject().put("username", "foo").put("password", "foo");
+
+    tomlAuth.authenticate(
+        authInfo,
+        context.asyncAssertFailure(th -> context.assertEquals("User not found", th.getMessage())));
+  }
+
+  @Test
+  public void userWithoutPasswordSetShouldFailAuthentication(final TestContext context) {
+    JsonObject authInfo = new JsonObject().put("username", "noPasswordUser").put("password", "foo");
+
+    tomlAuth.authenticate(
+        authInfo,
+        context.asyncAssertFailure(
+            th -> context.assertEquals("No password set for user", th.getMessage())));
+  }
+
+  @Test
+  public void passwordMismatchShouldFailAuthentication(final TestContext context) {
+    JsonObject authInfo = new JsonObject().put("username", "userA").put("password", "foo");
+
+    tomlAuth.authenticate(
+        authInfo,
+        context.asyncAssertFailure(
+            th -> context.assertEquals("Invalid password", th.getMessage())));
+  }
+
+  @Test
+  public void validPasswordShouldAuthenticateSuccessfully(final TestContext context) {
+    JsonObject expectedPrincipal =
+        new JsonObject()
+            .put("username", "userA")
+            .put("password", "$2a$10$l3GA7K8g6rJ/Yv.YFSygCuI9byngpEzxgWS9qEg5emYDZomQW7fGC")
+            .put("groups", new JsonArray().add("admin"))
+            .put("permissions", new JsonArray().add("eth:*").add("perm:*"))
+            .put("roles", new JsonArray().add("net"));
+
+    JsonObject authInfo = new JsonObject().put("username", "userA").put("password", "pegasys");
+
+    tomlAuth.authenticate(
+        authInfo,
+        context.asyncAssertSuccess(
+            res -> context.assertEquals(expectedPrincipal, res.principal())));
+  }
+
+  private String getTomlPath(final String tomlFileName) throws URISyntaxException {
+    return Paths.get(ClassLoader.getSystemResource(tomlFileName).toURI())
+        .toAbsolutePath()
+        .toString();
+  }
+}
diff --git a/ethereum/jsonrpc/src/test/resources/authentication/auth.toml b/ethereum/jsonrpc/src/test/resources/authentication/auth.toml
new file mode 100644
index 0000000000..0c31c70e8a
--- /dev/null
+++ b/ethereum/jsonrpc/src/test/resources/authentication/auth.toml
@@ -0,0 +1,17 @@
+[Users.userA]
+password = "$2a$10$l3GA7K8g6rJ/Yv.YFSygCuI9byngpEzxgWS9qEg5emYDZomQW7fGC"
+groups = ["admin"]
+permissions = ["eth:*", "perm:*"]
+roles = ["net"]
+
+[Groups.admins]
+roles = ["admin"]
+
+[Roles.admin]
+permissions = ["admin:*"]
+
+[Roles.net]
+permissions = ["net:*"]
+
+[Users.noPasswordUser]
+groups = ["admin"]
\ No newline at end of file
diff --git a/gradle/versions.gradle b/gradle/versions.gradle
index 384f0f9c4c..239ec10748 100644
--- a/gradle/versions.gradle
+++ b/gradle/versions.gradle
@@ -72,6 +72,8 @@ dependencyManagement {
 
     dependency 'org.rocksdb:rocksdbjni:5.17.2'
 
+    dependency 'org.springframework.security:spring-security-crypto:5.1.3.RELEASE'
+    
     dependency 'org.web3j:abi:4.1.0'
     dependency 'org.web3j:core:4.1.0'
     dependency 'org.web3j:crypto:4.1.0'
diff --git a/pantheon/build.gradle b/pantheon/build.gradle
index c00aca8701..fd04cbe468 100644
--- a/pantheon/build.gradle
+++ b/pantheon/build.gradle
@@ -48,6 +48,7 @@ dependencies {
   implementation 'io.vertx:vertx-web'
   implementation 'net.consensys.cava:cava-toml'
   implementation 'org.apache.logging.log4j:log4j-api'
+  implementation 'org.springframework.security:spring-security-crypto'
 
   runtime 'org.apache.logging.log4j:log4j-core'
 
diff --git a/pantheon/src/main/java/tech/pegasys/pantheon/cli/PantheonCommand.java b/pantheon/src/main/java/tech/pegasys/pantheon/cli/PantheonCommand.java
index ff1c4759cb..10a555a999 100644
--- a/pantheon/src/main/java/tech/pegasys/pantheon/cli/PantheonCommand.java
+++ b/pantheon/src/main/java/tech/pegasys/pantheon/cli/PantheonCommand.java
@@ -372,7 +372,7 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
     description =
         "Set if the metrics push gateway integration should be started (default: ${DEFAULT-VALUE})"
   )
-  private Boolean isMetricsPushEnabled = false;
+  private final Boolean isMetricsPushEnabled = false;
 
   @Option(
     names = {"--metrics-push-host"},
@@ -528,6 +528,8 @@ public class PantheonCommand implements DefaultCommandValues, Runnable {
         BlocksSubCommand.COMMAND_NAME, new BlocksSubCommand(blockImporter, resultHandler.out()));
     commandLine.addSubcommand(
         PublicKeySubCommand.COMMAND_NAME, new PublicKeySubCommand(resultHandler.out()));
+    commandLine.addSubcommand(
+        PasswordSubCommand.COMMAND_NAME, new PasswordSubCommand(resultHandler.out()));
 
     commandLine.registerConverter(Address.class, Address::fromHexString);
     commandLine.registerConverter(BytesValue.class, BytesValue::fromHexString);
diff --git a/pantheon/src/main/java/tech/pegasys/pantheon/cli/PasswordSubCommand.java b/pantheon/src/main/java/tech/pegasys/pantheon/cli/PasswordSubCommand.java
new file mode 100644
index 0000000000..6ba548b464
--- /dev/null
+++ b/pantheon/src/main/java/tech/pegasys/pantheon/cli/PasswordSubCommand.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2018 ConsenSys AG.
+ *
+ * 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 tech.pegasys.pantheon.cli;
+
+import static tech.pegasys.pantheon.cli.PasswordSubCommand.COMMAND_NAME;
+
+import java.io.PrintStream;
+
+import org.springframework.security.crypto.bcrypt.BCrypt;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Model.CommandSpec;
+import picocli.CommandLine.Parameters;
+import picocli.CommandLine.ParentCommand;
+import picocli.CommandLine.Spec;
+
+@Command(
+  name = COMMAND_NAME,
+  description = "This command generates the hash of a given password.",
+  mixinStandardHelpOptions = true
+)
+class PasswordSubCommand implements Runnable {
+
+  static final String COMMAND_NAME = "password-hash";
+
+  @SuppressWarnings("unused")
+  @ParentCommand
+  private PantheonCommand parentCommand; // Picocli injects reference to parent command
+
+  @SuppressWarnings("unused")
+  @Spec
+  private CommandSpec spec; // Picocli injects reference to command spec
+
+  final PrintStream out;
+
+  @SuppressWarnings("FieldMustBeFinal")
+  @Parameters(arity = "1..1", description = "The password input")
+  private String password = null;
+
+  PasswordSubCommand(final PrintStream out) {
+    this.out = out;
+  }
+
+  @Override
+  public void run() {
+    out.print(BCrypt.hashpw(password, BCrypt.gensalt()));
+  }
+}
diff --git a/pantheon/src/test/java/tech/pegasys/pantheon/cli/PasswordSubCommandTest.java b/pantheon/src/test/java/tech/pegasys/pantheon/cli/PasswordSubCommandTest.java
new file mode 100644
index 0000000000..1bcaa3d916
--- /dev/null
+++ b/pantheon/src/test/java/tech/pegasys/pantheon/cli/PasswordSubCommandTest.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2019 ConsenSys AG.
+ *
+ * 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 tech.pegasys.pantheon.cli;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.Test;
+import picocli.CommandLine.Model.CommandSpec;
+
+public class PasswordSubCommandTest extends CommandTestAbstract {
+
+  @Test
+  public void passwordHashSubCommandExists() {
+    CommandSpec spec = parseCommand();
+    assertThat(spec.subcommands()).containsKeys("password-hash");
+    assertThat(commandOutput.toString()).isEmpty();
+    assertThat(commandErrorOutput.toString()).isEmpty();
+  }
+
+  @Test
+  public void callingPasswordHashWithoutPasswordParameterMustDisplayUsage() {
+    final String expectedUsage =
+        "Missing required parameter: <password>"
+            + System.lineSeparator()
+            + "Usage: pantheon password-hash [-hV] <password>"
+            + System.lineSeparator()
+            + "This command generates the hash of a given password."
+            + System.lineSeparator()
+            + "      <password>   The password input"
+            + System.lineSeparator()
+            + "  -h, --help       Show this help message and exit."
+            + System.lineSeparator()
+            + "  -V, --version    Print version information and exit."
+            + System.lineSeparator();
+
+    parseCommand("password-hash");
+    assertThat(commandOutput.toString()).isEmpty();
+    assertThat(commandErrorOutput.toString()).startsWith(expectedUsage);
+  }
+
+  @Test
+  public void publicKeySubCommandExistAnbHaveSubCommands() {
+    parseCommand("password-hash", "foo");
+
+    // we can't predict the final value so we are only checking if it starts with the hash marker
+    assertThat(commandOutput.toString()).startsWith("$2");
+    assertThat(commandErrorOutput.toString()).isEmpty();
+  }
+}