HashAlgorithmNegotiator (pgpainless-core 1.4.0 API)

```
public interface HashAlgorithmNegotiator
```
Interface for a class that negotiates HashAlgorithms. You can provide your own implementation using custom logic by implementing the negotiateHashAlgorithm(Set) method.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static HashAlgorithmNegotiator`	`negotiateByPolicy(Policy.HashAlgorithmPolicy hashAlgorithmPolicy)`	Return an instance that negotiates `HashAlgorithms` based on the given `Policy.HashAlgorithmPolicy`.
`HashAlgorithm`	`negotiateHashAlgorithm(java.util.Set<HashAlgorithm> orderedHashAlgorithmPreferencesSet)`	Pick one `HashAlgorithm` from the ordered set of acceptable algorithms.
`static HashAlgorithmNegotiator`	`negotiateRevocationSignatureAlgorithm(Policy policy)`	Return an instance that negotiates `HashAlgorithms` used for revocation signatures based on the given `Policy`.
`static HashAlgorithmNegotiator`	`negotiateSignatureHashAlgorithm(Policy policy)`	Return an instance that negotiates `HashAlgorithms` used for non-revocation signatures based on the given `Policy`.

- Method Detail
  - negotiateHashAlgorithm
```
HashAlgorithm negotiateHashAlgorithm(java.util.Set<HashAlgorithm> orderedHashAlgorithmPreferencesSet)
```
    Pick one HashAlgorithm from the ordered set of acceptable algorithms.
    
    Parameters:
    
    orderedHashAlgorithmPreferencesSet - hash algorithm preferences
    
    Returns:
    
    picked algorithms
  - negotiateSignatureHashAlgorithm
```
static HashAlgorithmNegotiator negotiateSignatureHashAlgorithm(Policy policy)
```
    Return an instance that negotiates HashAlgorithms used for non-revocation signatures based on the given Policy.
    
    Parameters:
    
    policy - algorithm policy
    
    Returns:
    
    negotiator
  - negotiateRevocationSignatureAlgorithm
```
static HashAlgorithmNegotiator negotiateRevocationSignatureAlgorithm(Policy policy)
```
    Return an instance that negotiates HashAlgorithms used for revocation signatures based on the given Policy.
    
    Parameters:
    
    policy - algorithm policy
    
    Returns:
    
    negotiator
  - negotiateByPolicy
```
static HashAlgorithmNegotiator negotiateByPolicy(Policy.HashAlgorithmPolicy hashAlgorithmPolicy)
```
    Return an instance that negotiates HashAlgorithms based on the given Policy.HashAlgorithmPolicy.
    
    Parameters:
    
    hashAlgorithmPolicy - algorithm policy for hash algorithms
    
    Returns:
    
    negotiator