SM9SigUserKeyGenerator (Bouncy Castle Library 1.86 API Specification)

All Known Subinterfaces:

SM9SigMasterPrivateKey
```
public interface SM9SigUserKeyGenerator
```
A master private key capable of the KGC user-key extraction for an identity-based signature scheme: deriving a user's key pair 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:

SM9EncUserKeyGenerator

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.security.KeyPair`	`generateUserKeyPair(byte[] identity)`	Generate the key pair of the user identified by `identity`: the private key that signs and the public key a verifier checks against.

- Method Detail
  - generateUserKeyPair
```
java.security.KeyPair generateUserKeyPair(byte[] identity)
```
    Generate the key pair of the user identified by identity: the private key that signs and the public key a verifier checks against. This derivation is a KGC operation and is deterministic - the same master key and identity always yield the same pair.
    
    Parameters:
    
    identity - the user's identity.
    
    Returns:
    
    the user's key pair.