# ExportDukptInitialKey
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Parameter information for IPEK generation during export.

## Contents
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 ** KeySerialNumber **   <a name="paymentcryptography-Type-ExportDukptInitialKey-KeySerialNumber"></a>
The KSN for IPEK generation using DUKPT.   
KSN must be padded before sending to AWS Payment Cryptography. KSN hex length should be 20 for a TDES\$12KEY key or 24 for an AES key.  
Type: String  
Length Constraints: Minimum length of 20. Maximum length of 24.  
Pattern: `[0-9A-F]{20}$|^[0-9A-F]{24}`   
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/payment-cryptography-2021-09-14/ExportDukptInitialKey) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/payment-cryptography-2021-09-14/ExportDukptInitialKey) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/payment-cryptography-2021-09-14/ExportDukptInitialKey)