PrfSet

java.lang.Object
- com.google.crypto.tink.prf.PrfSet

```
@Immutable
public abstract class PrfSet
extends java.lang.Object
```
A Tink Keyset can be converted into a set of PRFs using this primitive. Every key in the keyset corresponds to a PRF in the PRFSet. Every PRF in the set is given an ID, which is the same ID as the key id in the Keyset.

Constructor Summary

Constructors
Constructor Description

PrfSet()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`byte[]`	`computePrimary(byte[] input, int outputLength)`	Convenience method to compute the primary PRF on a given input.
`abstract java.util.Map<java.lang.Integer,Prf>`	`getPrfs()`	A map of the PRFs represented by the keys in this keyset.
`abstract int`	`getPrimaryId()`	Returns the primary ID of the keyset.

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

- Constructor Detail
  - PrfSet
```
public PrfSet()
```
- Method Detail
  - getPrimaryId
```
public abstract int getPrimaryId()
```
    Returns the primary ID of the keyset.
  - getPrfs
```
public abstract java.util.Map<java.lang.Integer,Prf> getPrfs()
                                                            throws java.security.GeneralSecurityException
```
    A map of the PRFs represented by the keys in this keyset. The map is guaranteed to contain getPrimaryId() as a key.
    
    Throws:
    
    java.security.GeneralSecurityException
  - computePrimary
```
public byte[] computePrimary(byte[] input,
                             int outputLength)
                      throws java.security.GeneralSecurityException
```
    Convenience method to compute the primary PRF on a given input. See PRF.compute for details of the parameters.
    
    Throws:
    
    java.security.GeneralSecurityException