# WrappedWorkingKey


The parameter information of the outgoing wrapped key block.

## Contents


 ** KeyCheckValue **   <a name="paymentcryptographydata-Type-WrappedWorkingKey-KeyCheckValue"></a>
The key check value (KCV) of the key contained within the outgoing TR31WrappedKeyBlock.  
 The KCV is used to check if all parties holding a given key have the same key or to detect that a key has changed. For more information on KCV, see [KCV](https://docs.aws.amazon.com/payment-cryptography/latest/userguide/terminology.html#terms.kcv) in the * AWS Payment Cryptography User Guide*.  
Type: String  
Length Constraints: Minimum length of 4. Maximum length of 16.  
Pattern: `[0-9a-fA-F]+`   
Required: Yes

 ** WrappedKeyMaterial **   <a name="paymentcryptographydata-Type-WrappedWorkingKey-WrappedKeyMaterial"></a>
The wrapped key block of the outgoing transaction key.  
Type: String  
Length Constraints: Minimum length of 32. Maximum length of 16384.  
Required: Yes

 ** WrappedKeyMaterialFormat **   <a name="paymentcryptographydata-Type-WrappedWorkingKey-WrappedKeyMaterialFormat"></a>
The key block format of the wrapped key.  
Type: String  
Valid Values: `KEY_CRYPTOGRAM | TR31_KEY_BLOCK | TR34_KEY_BLOCK`   
Required: Yes

## See Also


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/payment-cryptography-data-2022-02-03/WrappedWorkingKey) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/payment-cryptography-data-2022-02-03/WrappedWorkingKey) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/payment-cryptography-data-2022-02-03/WrappedWorkingKey)