Environment variables

GlobalPlatformPro supports several environment variables to configure its behavior:

Variable	Description
GP_READER	Name or part of the name of the PC/SC reader to use.
GP_READER_IGNORE	Name or part of the name of the PC/SC reader to ignore.
GP_KEY	Hex encoded key content/value.
GP_KEY_ENC	Hex encoded ENC key value.
GP_KEY_MAC	Hex encoded MAC key value.
GP_KEY_DEK	Hex encoded DEK key value.
GP_KEY_KDF	Key diversification format/template.
GP_KEY_KDD	Key Diversification Data (override).
GP_KEY_VER	Key version.
GP_AID	Default AID to connect to.
GP_TRACE	Set to any value to enable trace logging (requires -d).
GP_PCSC_RESET	Set to true to reset the card on disconnect.
GP_PCSC_EXCLUSIVE	Set to true to use exclusive access to the reader.
GP_PCSC_TRANSACT	Set to false to disable transaction usage (default is true).
GLOBALPLATFORMPRO_SCP03_BUGGYCOUNTERWORKAROUND	Set to true to enable workaround for buggy SCP03 implementations.