SigningProvider (crypto 0.5.1-preview1 API)

All Known Implementing Classes:

EdDSASigningProvider
```
public interface SigningProvider
```
Implement this interface to provide signing capability

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`byte[]`	`sign(byte[] message, byte[] privateKey)`	Sign a message with a ed25519 private key
`byte[]`	`signExtended(byte[] message, byte[] privateKey)`	Sign a message with a ed25519 expanded private key
`byte[]`	`signExtended(byte[] message, byte[] privateKey, byte[] publicKey)`	Deprecated. use `signExtended(byte[], byte[])` instead.
`boolean`	`verify(byte[] signature, byte[] message, byte[] publicKey)`	Verify signature

- Method Detail
  - sign
```
byte[] sign(byte[] message,
            byte[] privateKey)
```
    Sign a message with a ed25519 private key
    
    Parameters:
    
    message -
    
    privateKey -
    
    Returns:
    
    Signature
  - signExtended
```
@Deprecated
byte[] signExtended(byte[] message,
                    byte[] privateKey,
                    byte[] publicKey)
```
    Deprecated.
    use signExtended(byte[], byte[]) instead.
    
    Sign a message with a ed25519 expanded private key
    
    Parameters:
    
    message -
    
    privateKey -
    
    Returns:
    
    Signature
  - signExtended
```
byte[] signExtended(byte[] message,
                    byte[] privateKey)
```
    Sign a message with a ed25519 expanded private key
    
    Parameters:
    
    message -
    
    privateKey -
    
    Returns:
  - verify
```
boolean verify(byte[] signature,
               byte[] message,
               byte[] publicKey)
```
    Verify signature
    
    Parameters:
    
    signature -
    
    message -
    
    publicKey -
    
    Returns:
    
    true if signature verification is successful, otherwise false