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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>
40 lines
1.4 KiB
CMake
40 lines
1.4 KiB
CMake
# Copyright (C) 2021 KeePassXC Team <team@keepassxc.org>
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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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# Use pkgconfig on Linux
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if(NOT WIN32)
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find_package(PkgConfig QUIET)
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pkg_check_modules(PCSC libpcsclite)
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endif()
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if(NOT PCSC_FOUND)
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# Search for PC/SC headers on Mac and Windows
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find_path(PCSC_INCLUDE_DIRS winscard.h
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HINTS
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${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}
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/usr/include/PCSC
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PATH_SUFFIXES PCSC)
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# MAC library is PCSC, Windows library is WinSCard
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find_library(PCSC_LIBRARIES NAMES pcsclite libpcsclite WinSCard PCSC
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HINTS
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${CMAKE_C_IMPLICIT_LINK_DIRECTORIES})
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(PCSC DEFAULT_MSG PCSC_LIBRARIES PCSC_INCLUDE_DIRS)
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mark_as_advanced(PCSC_LIBRARIES PCSC_INCLUDE_DIRS)
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