6d1fc31e96
* Support NFC readers for hardware tokens using PC/SC This requires a new library dependency: PCSC. The PCSC library provides methods to access smartcards. On Linux, the third-party pcsc-lite package is used. On Windows, the native Windows API (Winscard.dll) is used. On Mac OSX, the native OSX API (framework-PCSC) is used. * Split hardware key access into multiple classes to handle different methods of communicating with the keys. * Since the Yubikey can now be a wireless token as well, the verb "plug in" was replaced with a more generic "interface with". This shall indicate that the user has to present their token to the reader, or plug it in via USB. * Add PC/SC interface for YubiKey challenge-response This new interface uses the PC/SC protocol and API instead of the USB protocol via ykpers. Many YubiKeys expose their functionality as a CCID device, which can be interfaced with using PC/SC. This is especially useful for NFC-only or NFC-capable Yubikeys, when they are used together with a PC/SC compliant NFC reader device. Although many (not all) Yubikeys expose their CCID functionality over their own USB connection as well, the HMAC-SHA1 functionality is often locked in this mode, as it requires eg. a touch on the gold button. When accessing the CCID functionality wirelessly via NFC (like this code can do using a reader), then the user interaction is to present the key to the reader. This implementation has been tested on Linux using pcsc-lite, Windows using the native Winscard.dll library, and Mac OSX using the native PCSC-framework library. * Remove PC/SC ATR whitelist, instead scan for AIDs Before, a whitelist of ATR codes (answer to reset, hardware-specific) was used to scan for compatible (Yubi)Keys. Now, every connected smartcard is scanned for AIDs (applet identifier), which are known to implement the HMAC-SHA1 protocol. This enables the support of currently unknown or unreleased hardware. Co-authored-by: Jonathan White <support@dmapps.us>
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/*
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* Copyright (C) 2019 KeePassXC Team <team@keepassxc.org>
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* Copyright (C) 2014 Kyle Manna <kyle@kylemanna.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 or (at your option)
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* version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ChallengeResponseKey.h"
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#include "core/AsyncTask.h"
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QUuid ChallengeResponseKey::UUID("e092495c-e77d-498b-84a1-05ae0d955508");
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ChallengeResponseKey::ChallengeResponseKey(YubiKeySlot keySlot)
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: Key(UUID)
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, m_keySlot(keySlot)
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{
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}
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QByteArray ChallengeResponseKey::rawKey() const
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{
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return QByteArray(m_key.data(), m_key.size());
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}
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QString ChallengeResponseKey::error() const
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{
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return m_error;
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}
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bool ChallengeResponseKey::challenge(const QByteArray& challenge)
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{
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m_error.clear();
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auto result =
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AsyncTask::runAndWaitForFuture([&] { return YubiKey::instance()->challenge(m_keySlot, challenge, m_key); });
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if (result != YubiKey::ChallengeResult::YCR_SUCCESS) {
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// Record the error message
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m_key.clear();
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m_error = YubiKey::instance()->errorMessage();
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}
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return result == YubiKey::ChallengeResult::YCR_SUCCESS;
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}
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