RollingSigner (AWS Java SDK :: HTTP Auth AWS 2.21.17 API)

```
public final class RollingSigner
extends Object
```
A class which calculates a rolling signature of arbitrary data using HMAC-SHA256. Each time a signature is calculated, the prior calculation is incorporated, hence "rolling".

Constructors
Constructor and Description
`RollingSigner(byte[] signingKey, String seedSignature)`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`reset()`
`String`	`sign(Function<String,String> stringToSignTemplate)` Using a template that incorporates the previous calculated signature, sign the string and return it.

public RollingSigner(byte[] signingKey,
                     String seedSignature)

Class RollingSigner