sc-hsm-tool 1 OpenSC OpenSC Tools opensc
sc-hsm-tool smart card utility for SmartCard-HSM
`sc-hsm-tool` OPTIONS

The `sc-hsm-tool` utility can be used from the command line to perform extended maintenance tasks not available via PKCS#11 or other tools in the OpenSC package. It can be used to query the status of a SmartCard-HSM, initialize a device, generate and import Device Key Encryption Key (DKEK) shares and to wrap and unwrap keys.

## Options

`--initialize`, `-X`

  Initialize token, removing all existing keys, certificates and files.

  Use `--so-pin` to define SO-PIN for first initialization or to verify in subsequent initializations.

  Use `--pin` to define the initial user pin value.

  Use `--pin-retry` to define the maximum number of wrong user PIN presentations.

  Use with `--dkek-shares` to enable key wrap / unwrap.

  Use with `--label` to define a token label

`--create-dkek-share` filename, `-C` filename

  Create a DKEK share encrypted under a password and save it to the file given as parameter.

  Use `--password` to provide a password for encryption rather than prompting for one.

  Use `--pwd-shares-threshold` and `--pwd-shares-total` to randomly generate a password and split is using a (t, n) threshold scheme.

`--import-dkek-share` filename, `-I` filename

  Prompt for user password, read and decrypt DKEK share and import into SmartCard-HSM.

  Use `--password` to provide a password for decryption rather than prompting for one.

  Use `--pwd-shares-total` to specify the number of shares that should be entered to reconstruct the password.

`--wrap-key` filename, `-W` filename

  Wrap the key referenced in `--key-reference` and save with it together with the key description and certificate to the given file.

  Use `--pin` to provide the user PIN on the command line.

`--unwrap-key` filename, `-U` filename

  Read wrapped key, description and certificate from file and import into SmartCard-HSM under the key reference given in `--key-reference`.

  Determine the key reference using the output of `pkcs15-tool -D`.

  Use `--pin` to provide a user PIN on the command line.

  Use `--force` to remove any key, key description or certificate in the way.

`--dkek-shares` number-of-shares, `-s` number-of-shares

  Define the number of DKEK shares to use for recreating the DKEK.

  This is an optional parameter. Using `--initialize` without `--dkek-shares` will disable the DKEK completely.

  Using `--dkek-shares` with 0 shares requests the SmartCard-HSM to generate a random DKEK. Keys wrapped with this DKEK can only be unwrapped in the same SmartCard-HSM.

  After using `--initialize` with one or more DKEK shares, the SmartCard-HSM will remain in the initialized state until all DKEK shares have been imported. During this phase no new keys can be generated or imported.

`--pin` pin, `--so-pin` sopin,

  These options can be used to specify the PIN 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.

`--pin-retry` value

  Define number of PIN retries for user PIN during initialization. Default is 3.

`--bio-server1` value

  The hexadecimal AID of of the biometric server for template 1. Switches on the use of the user PIN as session PIN.

`--bio-server2` value

  The hexadecimal AID of of the biometric server for template 2. Switches on the use of the user PIN as session PIN.

`--password` value

  Define password for DKEK share encryption. If set to env:VARIABLE, the value of the environment variable VARIABLE is used.

`--pwd-shares-threshold` value

  Define threshold for number of password shares required for reconstruction.

`--pwd-shares-total` value

  Define number of password shares.

`--force`

  Force removal of existing key, description and certificate.

`--label` label, `-l` label

  Define the token label to be used in --initialize.

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

## Examples

Create a DKEK share:

`sc-hsm-tool --create-dkek-share dkek-share-1.pbe`

Create a DKEK share with random password split up using a (3, 5) threshold scheme:

`sc-hsm-tool --create-dkek-share dkek-share-1.pbe --pwd-shares-threshold 3 --pwd-shares-total 5`

Initialize SmartCard-HSM to use a single DKEK share:

`sc-hsm-tool --initialize --so-pin 3537363231383830 --pin 648219 --dkek-shares 1 --label mytoken`

Import DKEK share:

`sc-hsm-tool --import-dkek-share dkek-share-1.pbe`

Import DKEK share using a password split up using a (3, 5) threshold scheme for encryption:

`sc-hsm-tool --import-dkek-share dkek-share-1.pbe --pwd-shares-total 3`

Wrap referenced key, description and certificate:

`sc-hsm-tool --wrap-key wrap-key.bin --key-reference 1 --pin 648219`

Unwrap key into same or in different SmartCard-HSM with the same DKEK:

`sc-hsm-tool --unwrap-key wrap-key.bin --key-reference 10 --pin 648219 --force`

## See also

opensc-tool 1

## Authors

`sc-hsm-tool` was written by Andreas Schwier andreas.schwier@cardcontact.de.