# Generate a Visa PVV for a known pin
<a name="generate-pvv-givenpin"></a>

**Example**  
In this example, we will generate a PVV for a given (encrypted) pin. An encrypted pin may be received upstream such as from a payment terminal or from a cardholder using the [ user selectable pin flow](https://github.com/aws-samples/samples-for-payment-cryptography-service/tree/main/python_sdk_example/ecdh_flows). The key inputs are `PAN`, the `Pin Verification Key`, the `Pin Encryption Key`, the `Encrypted Pin Block` and the `PIN block format`.   

```
$ aws payment-cryptography-data generate-pin-data --generation-key-identifier arn:aws:payment-cryptography:us-east-2:111122223333:key/37y2tsl45p5zjbh2 --encryption-key-identifier arn:aws:payment-cryptography:us-east-2:111122223333:key/ivi5ksfsuplneuyt --primary-account-number 171234567890123 --pin-block-format ISO_FORMAT_0 --generation-attributes VisaPinVerificationValue={PinVerificationKeyIndex=1,EncryptedPinBlock=AA584CED31790F37}
```

```
{
            "GenerationKeyArn": "arn:aws:payment-cryptography:us-east-2:111122223333:key/37y2tsl45p5zjbh2",
            "GenerationKeyCheckValue": "7F2363",
            "EncryptionKeyArn": "arn:aws:payment-cryptography:us-east-2:111122223333:key/ivi5ksfsuplneuyt",
            "EncryptionKeyCheckValue": "7CC9E2",
            "EncryptedPinBlock": "AC17DC148BDA645E",
            "PinData": {
                "VerificationValue": "5507"
            }
        }
```