SM9SigUserKeyParametersGenerator (Bouncy Castle Library 1.86 API Specification)

All Known Implementing Classes:

SM9SigMasterPrivateKeyParameters
```
public interface SM9SigUserKeyParametersGenerator
```
A master key capable of the KGC user-key extraction for an identity-based signature scheme: deriving a user's signature private key from the user's identity (GM/T 0044.2-2016 for SM9, where the signature private-key generation function identifier hid is applied internally).

See Also:

SM9EncUserKeyParametersGenerator

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`SM9SigPrivateKeyParameters`	`generateUserKey(byte[] identity)`	Derive the signature private key of the user identified by `identity`, a deterministic KGC operation - the same master key and identity always yield the same user key.

- Method Detail
  - generateUserKey
```
SM9SigPrivateKeyParameters generateUserKey(byte[] identity)
```
    Derive the signature private key of the user identified by identity, a deterministic KGC operation - the same master key and identity always yield the same user key.
    
    Parameters:
    
    identity - the user's identity.
    
    Returns:
    
    the user's signature private key.