This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::ACMPCA::CertificateAuthority KeyUsage
<a name="aws-properties-acmpca-certificateauthority-keyusage"></a>

Defines one or more purposes for which the key contained in the certificate can be used. Default value for each option is false.

## Syntax
<a name="aws-properties-acmpca-certificateauthority-keyusage-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-acmpca-certificateauthority-keyusage-syntax.json"></a>

```
{
  "[CRLSign](#cfn-acmpca-certificateauthority-keyusage-crlsign)" : Boolean,
  "[DataEncipherment](#cfn-acmpca-certificateauthority-keyusage-dataencipherment)" : Boolean,
  "[DecipherOnly](#cfn-acmpca-certificateauthority-keyusage-decipheronly)" : Boolean,
  "[DigitalSignature](#cfn-acmpca-certificateauthority-keyusage-digitalsignature)" : Boolean,
  "[EncipherOnly](#cfn-acmpca-certificateauthority-keyusage-encipheronly)" : Boolean,
  "[KeyAgreement](#cfn-acmpca-certificateauthority-keyusage-keyagreement)" : Boolean,
  "[KeyCertSign](#cfn-acmpca-certificateauthority-keyusage-keycertsign)" : Boolean,
  "[KeyEncipherment](#cfn-acmpca-certificateauthority-keyusage-keyencipherment)" : Boolean,
  "[NonRepudiation](#cfn-acmpca-certificateauthority-keyusage-nonrepudiation)" : Boolean
}
```

### YAML
<a name="aws-properties-acmpca-certificateauthority-keyusage-syntax.yaml"></a>

```
  [CRLSign](#cfn-acmpca-certificateauthority-keyusage-crlsign): Boolean
  [DataEncipherment](#cfn-acmpca-certificateauthority-keyusage-dataencipherment): Boolean
  [DecipherOnly](#cfn-acmpca-certificateauthority-keyusage-decipheronly): Boolean
  [DigitalSignature](#cfn-acmpca-certificateauthority-keyusage-digitalsignature): Boolean
  [EncipherOnly](#cfn-acmpca-certificateauthority-keyusage-encipheronly): Boolean
  [KeyAgreement](#cfn-acmpca-certificateauthority-keyusage-keyagreement): Boolean
  [KeyCertSign](#cfn-acmpca-certificateauthority-keyusage-keycertsign): Boolean
  [KeyEncipherment](#cfn-acmpca-certificateauthority-keyusage-keyencipherment): Boolean
  [NonRepudiation](#cfn-acmpca-certificateauthority-keyusage-nonrepudiation): Boolean
```

## Properties
<a name="aws-properties-acmpca-certificateauthority-keyusage-properties"></a>

`CRLSign`  <a name="cfn-acmpca-certificateauthority-keyusage-crlsign"></a>
Key can be used to sign CRLs.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`DataEncipherment`  <a name="cfn-acmpca-certificateauthority-keyusage-dataencipherment"></a>
Key can be used to decipher data.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`DecipherOnly`  <a name="cfn-acmpca-certificateauthority-keyusage-decipheronly"></a>
Key can be used only to decipher data.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`DigitalSignature`  <a name="cfn-acmpca-certificateauthority-keyusage-digitalsignature"></a>
 Key can be used for digital signing.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`EncipherOnly`  <a name="cfn-acmpca-certificateauthority-keyusage-encipheronly"></a>
Key can be used only to encipher data.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`KeyAgreement`  <a name="cfn-acmpca-certificateauthority-keyusage-keyagreement"></a>
Key can be used in a key-agreement protocol.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`KeyCertSign`  <a name="cfn-acmpca-certificateauthority-keyusage-keycertsign"></a>
Key can be used to sign certificates.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`KeyEncipherment`  <a name="cfn-acmpca-certificateauthority-keyusage-keyencipherment"></a>
Key can be used to encipher data.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`NonRepudiation`  <a name="cfn-acmpca-certificateauthority-keyusage-nonrepudiation"></a>
Key can be used for non-repudiation.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)