org.bouncycastle.crypto.params

Interface SM9SigUserKeyParametersGenerator

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

Modifier and Type	Method and 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.