ProductKeyChain (pdl API)

java.lang.Object
- gov.usgs.earthquake.distribution.ProductKeyChain

```
public class ProductKeyChain
extends java.lang.Object
```
A group of keys that can be used to verify product signatures.

Constructor Summary

Constructors
Constructor	Description
`ProductKeyChain()`	Empty constructor
`ProductKeyChain(java.lang.String keys, Config config)`	Constructor for a string of keys
`ProductKeyChain(java.util.List<java.lang.String> keys, Config config)`	Constructor for list of keys

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.List<ProductKey>`	`getKeychain()`
`java.security.PublicKey[]`	`getProductKeys(ProductId id)`	Find public keys based on configured Keys.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ProductKeyChain
```
public ProductKeyChain()
```
    Empty constructor
  - ProductKeyChain
```
public ProductKeyChain(java.lang.String keys,
                       Config config)
                throws java.lang.Exception
```
    Constructor for a string of keys
    
    Parameters:
    
    keys - String of keys, separated by commas
    
    config - Config file
    
    Throws:
    
    java.lang.Exception - if error occurs
  - ProductKeyChain
```
public ProductKeyChain(java.util.List<java.lang.String> keys,
                       Config config)
                throws java.lang.Exception
```
    Constructor for list of keys
    
    Parameters:
    
    keys - String list of keys
    
    config - Config file
    
    Throws:
    
    java.lang.Exception - if error occurs
- Method Detail
  - getKeychain
```
public java.util.List<ProductKey> getKeychain()
```
    Returns:
    
    the keys
  - getProductKeys
```
public java.security.PublicKey[] getProductKeys(ProductId id)
```
    Find public keys based on configured Keys.
    
    Parameters:
    
    id - ID of product
    
    Returns:
    
    an array of candidate keys used to verify a signature.