Online chess program. Available on Android, FreeBSD, Linux, MacOS, OpenBSD, and Windows. Just about anyware.
QtChess also interfaces with GNUChess!
C++11 is required. C++17 for Qt 6.
Debian PowerPC is Qt 5.5.1. Notice QT_SHA3_KECCAK_COMPAT in qtchess.pro.
Qt LTS is supported. Qt 4.8.x is obsolete.
Data authentication is provided by SHA3-512 HMAC. Encryption is not necessary!
Key = Caissa
Digest = HMAC(Data, HMAC(Key, "QtChess" || QtChess-Version || 0x01))