// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Package keyderiver provides an internal interface for key derivation.
package keyderiver

import "github.com/tink-crypto/tink-go/v2/key"

// KeyDeriver is an internal interface for key derivation.
//
// It derives a new key from some initial key material and a salt.
// This interface is used to unify the behavior of primitives that perform
// key derivation.
type KeyDeriver interface {
	// DeriveKey derives a new key.
	DeriveKey(salt []byte) (key.Key, error)
}
