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diff --git a/src/common/password.h b/src/common/password.h
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+// Copyright (c) 2014-2017, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// 
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#pragma once
+
+#include <string>
+#include <boost/optional/optional.hpp>
+
+namespace tools
+{
+  class password_container
+  {
+  public:
+    static constexpr const size_t max_password_size = 1024;
+
+    //! Empty password
+    password_container() noexcept;
+
+    //! `password` is used as password
+    password_container(std::string&& password) noexcept;
+
+    //! \return A password from stdin TTY prompt or `std::cin` pipe.
+    static boost::optional<password_container> prompt(bool verify, const char *mesage = "Password");
+
+    password_container(const password_container&) = delete;
+    password_container(password_container&& rhs) = default;
+
+    //! Wipes internal password
+    ~password_container() noexcept;
+
+    password_container& operator=(const password_container&) = delete;
+    password_container& operator=(password_container&&) = default;
+
+    const std::string& password() const noexcept { return m_password; }
+
+  private:
+    //! TODO Custom allocator that locks to RAM?
+    std::string m_password;
+  };
+
+  struct login
+  {
+    login() = default;
+
+    /*!
+       Extracts username and password from the format `username:password`. A
+       blank username or password is allowed. If the `:` character is not
+       present, `password_container::prompt` will be called by forwarding the
+       `verify` and `message` arguments.
+
+       \param userpass Is "consumed", and the memory contents are wiped.
+       \param verify is passed to `password_container::prompt` if necessary.
+       \param message is passed to `password_container::prompt` if necessary.
+
+       \return The username and password, or boost::none if
+         `password_container::prompt` fails.
+     */
+    static boost::optional<login> parse(std::string&& userpass, bool verify, const char* message = "Password");
+
+    login(const login&) = delete;
+    login(login&&) = default;
+    ~login() = default;
+    login& operator=(const login&) = delete;
+    login& operator=(login&&) = default;
+
+    std::string username;
+    password_container password;
+  };
+}