snarkvm-circuit-program 4.6.1

// Copyright (c) 2019-2026 Provable Inc.
// This file is part of the snarkVM library.

// 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.

use super::*;

impl<A: Aleo> Request<A> {
    /// Returns the transition public key `tpk`.
    pub fn to_tpk(&self) -> Group<A> {
        // Retrieve the challenge from the signature.
        let challenge = self.signature.challenge();
        // Retrieve the response from the signature.
        let response = self.signature.response();
        // Retrieve `pk_sig` from the signature.
        let pk_sig = self.signature.compute_key().pk_sig();
        // Compute `tpk` as `(challenge * pk_sig) + (response * G)`, equivalent to `r * G`.
        (pk_sig * challenge) + A::g_scalar_multiply(response)
    }
}