public void setKeyArn(String keyArn) {
        this.keyArn = keyArn;
    }
<p>
The <code>keyARN</code> of the CVK encryption key that Amazon Web Services Payment Cryptography uses to generate
CVV or CSC.
</p>

@param keyArn
       The <code>keyARN</code> of the CVK encryption key that Amazon Web Services Payment Cryptography uses to
       generate CVV or CSC.
aws-java-sdk-paymentcryptographydata/src/main/java/com/amazonaws/services/paymentcryptographydata/model/GenerateCardValidationDataResult.java