opensc-tool

diagnostic tool for smart cards

TLDR

List readers

$ opensc-tool --list-readers

Show card info

$ opensc-tool --info

Show ATR (Answer To Reset)

$ opensc-tool --atr

List card files

$ opensc-tool --list-files

Send APDU command

$ opensc-tool --send-apdu [00:A4:04:00:00]

Verbose output

$ opensc-tool -v --info

opensc-tool is a diagnostic tool for smart cards. It can query card readers, retrieve card information, and send raw APDU commands for testing and debugging.Part of the OpenSC project for smart card support on Unix systems.

PARAMETERS

-l, --list-readers

List all configured readers.

-i, --info

Print information about OpenSC (version and enabled components).

-a, --atr

Print the Answer To Reset (ATR) of the card in hex.

-s apdu, --send-apdu apdu

Send an arbitrary APDU command to the card.

-f, --list-files

Recursively list all files stored on the card.

--list-algorithms

List algorithms supported by the card.

-r reader, --reader reader

Use a specific reader (by number or ATR).

-n, --name

Print the name of the inserted card driver.

--serial

Print the card serial number in hex.

-D, --list-drivers

List all installed card drivers.

-c driver, --card-driver driver

Use the specified card driver (use '?' to list).

--reset

Reset the card (cold or warm).

-G section:name:key, --get-conf-entry

Retrieve an opensc.conf configuration value.

-S section:name:key:value, --set-conf-entry

Set an opensc.conf configuration value.

-w, --wait

Wait for a card to be inserted.

-v, --verbose

Verbose output (may be specified multiple times for debug).

--version

Display OpenSC package version.

EXAMPLE

$ # Check for card
opensc-tool --list-readers
# Reader 0: Alcor Micro AU9540

# Get card info
opensc-tool --info
# Card type: PIV-II

CAVEATS

Requires PC/SC daemon (pcscd). Card must be inserted. Some commands require PIN.

HISTORY

OpenSC was started to provide open-source smart card support on Unix systems, supporting PKCS#11 and cryptographic operations.