> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pmock.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Example section for showcasing PMOCK API endpoints

## Request URL

```json theme={null}
https://user.pmock.com/api
```

## Authentication

To authenticate with our API, you need to include two headers in your requests:

1. `pmock-access-key`: Your access key
2. `pmock-access-token`: A signature generated using HMAC-SHA256

The signature is generated by:

* timestamp = The current second level timestamp is rounded down to an integer multiple of the entire minute
* accessKey:timestamp = To be encrypted string
* Using the HMAC-SHA256 algorithm, encrypt the encrypted string using the secretKey as the key,Convert the encrypted result to a base64 string

### Java Signature Generation Example

```java theme={null}
public static String generateSignature(String accessKey, String secretKey)
        throws NoSuchAlgorithmException, InvalidKeyException {

    // Get the current timestamp
    long currentTime = Instant.now().getEpochSecond();
    long timestamp  = currentTime - (currentTime % 60);

    // Build a string to be signed
    String stringToSign = accessKey + ":" + timestamp;

    // Sign with HMAC-SHA256
    Mac sha256HMAC = Mac.getInstance("HmacSHA256");
    SecretKeySpec secretKeySpec = new SecretKeySpec(secretKey.getBytes(StandardCharsets.UTF_8), "HmacSHA256");
    sha256HMAC.init(secretKeySpec);

    byte[] hash = sha256HMAC.doFinal(stringToSign.getBytes(StandardCharsets.UTF_8));

    // Convert byte array to base64 string
    return Base64.getEncoder().encodeToString(hash);
}
```