Provided by: opensc_0.22.0-1ubuntu2.1_amd64 
NAME
pkcs15-tool - utility for manipulating PKCS #15 data structures on smart cards and similar security
tokens
SYNOPSIS
pkcs15-tool [OPTIONS]
DESCRIPTION
The pkcs15-tool utility is used to manipulate the PKCS #15 data structures on smart cards and similar
security tokens. Users can list and read PINs, keys and certificates stored on the token. User PIN
authentication is performed for those operations that require it.
OPTIONS
--version,
Print the OpenSC package release version.
--aid aid
Specify in a hexadecimal form the AID of the on-card PKCS#15 application to bind to.
--auth-id id, -a id
Specifies the auth id of the PIN to use for the operation. This is useful with the --change-pin
operation.
--change-pin
Changes a PIN or PUK stored on the token. User authentication is required for this operation.
--dump, -D
List all card objects.
--list-info
List card objects.
--list-applications
List the on-card PKCS#15 applications.
--list-certificates, -c
List all certificates stored on the token.
--list-data-objects, -C
List all data objects stored on the token. For some cards the PKCS#15 attributes of the private data
objects are protected for reading and need the authentication with the User PIN. In such a case the
--verify-pin option has to be used.
--list-keys, -k
List all private keys stored on the token. General information about each private key is listed (eg.
key name, id and algorithm). Actual private key values are not displayed. For some cards the PKCS#15
attributes of the private keys are protected for reading and need the authentication with the User
PIN. In such a case the --verify-pin option has to be used.
--list-secret-keys
List all secret (symmetric) keys stored on the token. General information about each secret key is
listed (eg. key name, id and algorithm). Actual secret key values are not displayed. For some cards
the PKCS#15 attributes of the private keys are protected for reading and need the authentication with
the User PIN. In such a case the --verify-pin option has to be used.
--list-pins
List all PINs stored on the token. General information about each PIN is listed (eg. PIN name).
Actual PIN values are not shown.
--list-public-keys
List all public keys stored on the token, including key name, id, algorithm and length information.
--short -s
Output lists in compact format.
--no-cache
Disables token data caching.
--clear-cache
Removes the user's cache directory. On Windows, this option additionally removes the system's caching
directory (requires administrator privileges).
--clear-cache
Removes the user's cache directory. On Windows, this option additionally removes the system's caching
directory (requires administrator privileges).
--output filename, -o filename
Specifies where key output should be written. If filename already exists, it will be overwritten. If
this option is not given, keys will be printed to standard output.
--raw
Changes how --read-data-object prints the content to standard output. By default, when --raw is not
given, it will print the content in hex notation. If --raw is set, it will print the binary data
directly. This does not affect the output that is written to the file specified by the --output
option. Data written to a file will always be in raw binary.
--read-certificate cert
Reads the certificate with the given id.
--read-data-object cert, -R data
Reads data object with OID, applicationName or label. The content is printed to standard output in
hex notation, unless the --raw option is given. If an output file is given with the --output option,
the content is additionally written to the file. Output to the file is always written in raw binary
mode, the --raw only affects standard output behavior.
--read-public-key id
Reads the public key with id id, allowing the user to extract and store or use the public key.
--read-ssh-key id
Reads the public key with id id, writing the output in format suitable for
$HOME/.ssh/authorized_keys.
The key label, if any will be shown in the 'Comment' field.
--rfc4716
When used in conjunction with option --read-ssh-key the output format of the public key follows
rfc4716.
The default output format is a single line (openssh).
--test-update, -T,
Test if the card needs a security update
--update, -U,
Update the card with a security update
--reader arg
Number of the reader to use. By default, the first reader with a present card is used. If arg is an
ATR, the reader with a matching card will be chosen.
--unblock-pin, -u
Unblocks a PIN stored on the token. Knowledge of the Pin Unblock Key (PUK) is required for this
operation.
--verbose, -v
Causes pkcs15-tool to be more verbose. Specify this flag several times to enable debug output in the
OpenSC library.
--pin pin, --new-pin newpin --puk puk
These options can be used to specify the PIN/PUK values on the command line. If the value is set to
env:VARIABLE, the value of the specified environment variable is used. By default, the code is
prompted on the command line if needed.
Note that on most operation systems, any user can display the command line of any process on the
system using utilities such as ps(1). Therefore, you should prefer passing the codes via an
environment variable on an unsecured system.
--new-pin pin
Specify New PIN (when changing or unblocking)
--verify-pin
Verify PIN after card binding and before issuing any command (without 'auth-id' the first non-SO,
non-Unblock PIN will be verified)
--test-session-pin
Equivalent to --verify-pin with additional session PIN generation
--wait, -w
Causes pkcs15-tool to wait for a card insertion.
--use-pinpad
Do not prompt the user; if no PINs supplied, pinpad will be used.
SEE ALSO
pkcs15-init(1), pkcs15-crypt(1)
AUTHORS
pkcs15-tool was written by Juha Yrjölä <juha.yrjola@iki.fi>.
opensc 04/07/2025 PKCS15-TOOL(1)