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if called with size 0, realloc frees the buffer, which may eventually lead to a double free corruption.
PC/SC Relay
Welcome to PC/SC Relay. The purpose of PC/SC Relay is to relay a smart card using an contact-less interface. Currently the following contact-less emulators are supported:
- Hardware supported by libnfc
- OpenPICC
- Android Smart Card Emulator
Command APDUs are received with the contact-less interface and relayed. The Response APDUs are then sent back via RFID. The contact-less data will be relayed to one of the following:
- to a real smart card inserted into one of the systems' smart card readers. The smart card reader must be accessible with PC/SC. The smart card may be contact-based or contact-less.
- to a virtual smart
card that
directly connects to
pcsc-relay. The virtual smart card's native interface is used and (despite its name) PC/SC Relay does not need to access PC/SC in this case.