piv-tool 1 OpenSC OpenSC Tools opensc
piv-tool smart card utility for HSPD-12 PIV cards
`piv-tool` OPTIONS

The `piv-tool` utility can be used from the command line to perform miscellaneous smart card operations on a HSPD-12 PIV smart card as defined in NIST 800-73-3. It is intended for use with test cards only. It can be used to load objects, and generate key pairs, as well as send arbitrary APDU commands to a card after having authenticated to the card using the card key provided by the card vendor.

## Options

`--serial`

  Print the card serial number derived from the CHUID object, if any. Output is in hex byte format.

`--name`, `-n`

  Print the name of the inserted card (driver)

`--admin` argument, `-A` argument

  Authenticate to the card using a 2DES or 3DES key. The argument of the form

       {A|M}:ref:alg

  is required, were `A` uses "EXTERNAL AUTHENTICATION" and `M` uses "MUTUAL AUTHENTICATION". ref is normally `9B`, and alg is `03` for 3DES. The key is provided by the card vendor, and the environment variable `PIV_EXT_AUTH_KEY` must point to a text file containing the key in the format: `XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX:XX`
`--genkey` argument, `-G` argument

  Generate a key pair on the card and output the public key. The argument of the form

      ref:alg

  is required, where ref is `9A`, `9C`, `9D` or `9E` and alg is `06`, `07`, `11` or `14` for RSA 1024, RSA 2048, ECC 256 or ECC 384 respectively.
`--object` ContainerID, `-O` ContainerID

  Load an object onto the card. The ContainerID is as defined in NIST 800-73-n without leading `0x`. Example: CHUID object is 3000

`--cert` ref, `-C` ref

  Load a certificate onto the card. ref is `9A`, `9C`, `9D` or `9E`

`--compresscert` ref, `-Z` ref

  Load a certificate that has been gzipped onto the card. ref is `9A`, `9C`, `9D` or `9E`

`--out` file, `-o` file

  Output file for any operation that produces output.

`--in` file, `-i` file

  Input file for any operation that requires an input file.

`--key-slots-discovery` file

  Print properties of the key slots. Needs 'admin' authentication.

`--send-apdu` apdu, `-s` apdu

  Sends an arbitrary APDU to the card in the format `AA:BB:CC:DD:EE:FF...`. This option may be repeated.

`--reader` arg, `-r` 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.

`--wait`, `-w`

  Wait for a card to be inserted

`--verbose`, `-v`

  Causes `piv-tool` to be more verbose. Specify this flag several times to enable debug output in the opensc library.

## See also

opensc-tool 1

## Authors

`piv-tool` was written by Douglas E. Engert deengert@gmail.com.