# List the attributes of an AWS CloudHSM key using CMU
<a name="cloudhsm_mgmt_util-listAttributes"></a>

Use the **listAttributes** command in the AWS CloudHSM cloudhsm\$1mgmt\$1util (CMU) to list the attributes of an AWS CloudHSM key and the constants that represent them. You use these constants to identify the attributes in [getAttribute](cloudhsm_mgmt_util-getAttribute.md) and [setAttribute](cloudhsm_mgmt_util-setAttribute.md) commands. 

For help interpreting the key attributes, see the [AWS CloudHSM key attribute reference for KMU](key-attribute-table.md).

Before you run any key\$1mgmt\$1util command, you must [start key\$1mgmt\$1util](key_mgmt_util-setup.md#key_mgmt_util-start) and [log in](key_mgmt_util-log-in.md) to the HSM as a crypto user (CU). 

## User type
<a name="listAttributes-userType"></a>

The following users can run this command.
+ All users. You do not have to be logged in to run this command.

## Syntax
<a name="chmu-listAttributes-syntax"></a>

```
listAttributes [-h]
```

## Example
<a name="chmu-listAttributes-examples"></a>

This command lists the key attributes that you can get and change in key\$1mgmt\$1util and the constants that represent them. For help interpreting the key attributes, see the [AWS CloudHSM key attribute reference for KMU](key-attribute-table.md). To represent all attributes, use `512`.

```
Command: listAttributes

    Description
===========
The following are all of the possible attribute values for getAttribute.

      OBJ_ATTR_CLASS                  = 0
      OBJ_ATTR_TOKEN                  = 1
      OBJ_ATTR_PRIVATE                = 2
      OBJ_ATTR_LABEL                  = 3
      OBJ_ATTR_TRUSTED                = 134
      OBJ_ATTR_KEY_TYPE               = 256
      OBJ_ATTR_ID                     = 258
      OBJ_ATTR_SENSITIVE              = 259
      OBJ_ATTR_ENCRYPT                = 260
      OBJ_ATTR_DECRYPT                = 261
      OBJ_ATTR_WRAP                   = 262
      OBJ_ATTR_UNWRAP                 = 263
      OBJ_ATTR_SIGN                   = 264
      OBJ_ATTR_VERIFY                 = 266
      OBJ_ATTR_DERIVE                 = 268
      OBJ_ATTR_LOCAL                  = 355
      OBJ_ATTR_MODULUS                = 288
      OBJ_ATTR_MODULUS_BITS           = 289
      OBJ_ATTR_PUBLIC_EXPONENT        = 290
      OBJ_ATTR_VALUE_LEN              = 353
      OBJ_ATTR_EXTRACTABLE            = 354
      OBJ_ATTR_NEVER_EXTRACTABLE      = 356
      OBJ_ATTR_ALWAYS_SENSITIVE       = 357
      OBJ_ATTR_DESTROYABLE            = 370
      OBJ_ATTR_KCV                     = 371
      OBJ_ATTR_WRAP_WITH_TRUSTED       = 528
      OBJ_ATTR_WRAP_TEMPLATE           = 1073742353
      OBJ_ATTR_UNWRAP_TEMPLATE        = 1073742354
      OBJ_ATTR_ALL                    = 512
```

## Parameters
<a name="chmu-listAttributes-parameters"></a>

**-h**  
Displays help for the command.   
Required: Yes

## Related topics
<a name="chmu-listAttributes-seealso"></a>
+ [getAttribute](cloudhsm_mgmt_util-getAttribute.md)
+ [setAttribute](cloudhsm_mgmt_util-setAttribute.md)
+ [Key Attribute Reference](key-attribute-table.md)