# SubjectIdentifier
<a name="API_SubjectIdentifier"></a>

An object that identifies an image subject.

## Contents
<a name="API_SubjectIdentifier_Contents"></a>

 ** imageDigest **   <a name="ECR-Type-SubjectIdentifier-imageDigest"></a>
The digest of the image.  
Type: String  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ecr-2015-09-21/SubjectIdentifier) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ecr-2015-09-21/SubjectIdentifier) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ecr-2015-09-21/SubjectIdentifier)