ContentKey

  • Article

A ContentKey provides secure access to an Asset. In addition to creating a ContentKey entity, you must also use a protection key to encrypt the content key that you generate. For more information on retrieving the protection key, see Encrypt the Asset (Optional) and REST API Functions.

This topic gives an overview of the ContentKey entity and also demonstrates how to execute various operations with the Media Services REST API.

Important

When accessing entities in Media Services, you must set specific header fields and values in your HTTP requests.
For more information, see Setup for Media Services REST API Development and Connecting to Media Services with the Media Services REST API.

ContentKey Entity Properties

Property Type Description
Id

Required. This value is not set by Media Services.		 Edm.String User defined unique identifier.
Created

Read-only. Set by Media Services at creation time.		 Edm.DateTime This value is set by Media Services at creation time.
LastModified

Read-only. Set by Media Services.		 Edm.DateTime This value is updated by Media Services after any property changes are made.
ContentKeyType

Optional.		 Edm.Int32 An enumeration value that specifies the content key type. Valid values are:

- CommonEncryption = 0
- StorageEncryption = 1
- ConfigurationEncryption = 2
- EnvelopeEncryption = 4
EncryptedContentKey

Optional.		 Edm.String Content key encrypted with the public key of the X.509 certificate. Maximum length is 4000.
Name

Optional.		 Edm.String Friendly name for your ContentKey. Maximum length is 4000.
ProtectionKeyId

Optional.		 Edm.String Thumbprint of the X.509 certificate that is used to encrypt the storage, common encryption, or configuration encryption keys. This value is returned to you when calling the GetProtectionKeyId function. Maximum length is 4000.
ProtectionKeyType

Optional.		 Edm.Int32 An enumeration value that specifies the protection key type. Valid values are:

- X509CertificateThumbprint = 0
Checksum

Optional.		 Edm.String The checksum of the ContentKey. Maximum length is 4000.
AuthorizationPolicyId Edm.String The authorization policy id associated with the ContentKey.

Create a ContentKey

ContentKeys can be created using a POST HTTP request.

Method Request URI HTTP Version
POST https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys HTTP/1.1

Sample Request

To get the latest x-ms-version:, see Media Services REST.

POST https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys HTTP/1.1  
Content-Type: application/json;odata=verbose  
Accept: application/json;odata=verbose  
DataServiceVersion: 3.0  
MaxDataServiceVersion: 3.0  
x-ms-version: 2.19  
Authorization:  Bearer <token value>  
Host: media.windows.net  
Content-Length: 572  
Expect: 100-continue  
  
{"Id" : "nb:kid:UUID:316d14d4-b603-4d90-b8db-0fede8aa48f8", "ContentKeyType" : 1, "EncryptedContentKey" : "Y4NPej7heOFa2vsd8ZEOcjjpu/qOq3RJ6GRfxa8CCwtAM83d6J2mKOeQFUmMyVXUSsBCCOdufmieTKi+hOUtNAbyNM4lY4AXI537b9GaY8oSeje0NGU8+QCOuf7jGdRac5B9uIk7WwD76RAJnqyep6U/OdvQV4RLvvZ9w7nO4bY8RHaUaLxC2u4aIRRaZtLu5rm8GKBPy87OzQVXNgnLM01I8s3Z4wJ3i7jXqkknDy4VkIyLBSQvIvUzxYHeNdMVWDmS+jPN9ScVmolUwGzH1A23td8UWFHOjTjXHLjNm5Yq+7MIOoaxeMlKPYXRFKofRY8Qh5o5tqvycSAJ9KUqfg==", "ProtectionKeyId" : "7D9BB04D9D0A4A24800CADBFEF232689E048F69C", "ProtectionKeyType" : 1, "Checksum" : "TfXtjCIlq1Y=" }

Get Key Delivery URL

Gets the key delivery URL for the specified delivery method of the content key. A client uses the returned URL to request an AES key or a PlayReady license in order to playback the protected content.

Specify the type of the URL to get in the body of the HTTP request. If you are protecting your content with PlayReady, request a Media Services PlayReady license acquisition URL, using 1 for the keyDeliveryType: {"keyDeliveryType":1}. If you are protecting your content with the envelope encryption, request a key acquisition URL by specifying 2 for keyDeliveryType: {"keyDeliveryType":2}.

Method Request URI HTTP Version
POST https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys('ContentkeyId')/GetKeyDeliveryUrl HTTP/1.1

Sample

You can try out the following example in the Fiddler’s Composer tab. The example gets the PlayReady license acquisition URL.

Request headers:

POST https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys('nb:kid:UUID:14e7e815-5db3-4027-9578-a55a416a3367')/GetKeyDeliveryUrl HTTP/1.1  
MaxDataServiceVersion: 3.0;NetFx  
Accept: application/json  
Accept-Charset: UTF-8  
User-Agent: Microsoft ADO.NET Data Services  
Authorization:  Bearer <token value>  
x-ms-version: 2.19  
Content-Type: application/json  
Host: media.windows.net  
Content-Length: 21

Request body:

{"keyDeliveryType":1}

If successful, this operation returns a 200 OK status code and the specified URL. For example: https://account001.keydelivery.mediaservices.windows.net/PlayReady/.

List ContentKeys

ContentKeys are retrieved using a GET HTTP request.

Method Request URI HTTP Version
GET https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys HTTP/1.1
Method Request URI HTTP Version
GET https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys('contentkeyid') HTTP/1.1
Method Request URI HTTP Version
GET https://<accountname>.restv2.<location>.media.azure.net/api/Assets('assetid')/ContentKeys HTTP/1.1

Sample Request

To get the latest x-ms-version:, see Media Services REST.

GET https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys('nb:kid:UUID:58b522a5-be4e-4988-8958-ee0cdb179273') HTTP/1.1  
Content-Type: application/json;odata=verbose  
Accept: application/json;odata=verbose  
DataServiceVersion: 3.0  
MaxDataServiceVersion: 3.0  
x-ms-version: 2.19  
Authorization:  Bearer <token value>  
Host: media.windows.net

Delete a ContentKey

ContentKeys are deleted through a DELETE HTTP request.

Method Request URI HTTP Version
DELETE https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys('contentkeyid') HTTP/1.1

Sample Request

You can try out the following example in the Fiddler’s Composer tab.

To get the latest x-ms-version:, see Media Services REST.

DELETE https://<accountname>.restv2.<location>.media.azure.net/api/ContentKeys('nb:kid:UUID:58b522a5-be4e-4988-8958-ee0cdb179273') HTTP/1.1  
Content-Type: application/json;odata=verbose  
Accept: application/json;odata=verbose  
DataServiceVersion: 3.0  
MaxDataServiceVersion: 3.0  
x-ms-version: 2.19  
Authorization: Bearer <token value>  
Host: media.windows.net  
Content-Length: 0

See Also

AccessPolicy
Asset
AssetFile
Job
JobTemplate
Locator
MediaProcessor
Task
TaskTemplate
Quotas and Limitations