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# 为已知密码生成 Visa PVV
<a name="generate-pvv-givenpin"></a>

**Example**  
在此示例中，我们将为给定（加密）的 PIN 生成一个 PVV。加密的密码可以在上游接收，例如从支付终端接收，也可以使用[用户可选的密码](https://github.com/aws-samples/samples-for-payment-cryptography-service/tree/main/python_sdk_example/ecdh_flows)流从持卡人那里接收。关键输入是`PAN``Pin Verification Key`、`Pin Encryption Key`、、`Encrypted Pin Block`和`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"
            }
        }
```