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/*
* // Copyright (c) 2016-2019, Jaguar0625, gimre, BloodyRookie, Tech Bureau, Corp.
* // Copyright (c) 2020-present, Jaguar0625, gimre, BloodyRookie.
* // All rights reserved.
* //
* // This file is part of Catapult.
* //
* // Catapult is free software: you can redistribute it and/or modify
* // it under the terms of the GNU Lesser General Public License as published by
* // the Free Software Foundation, either version 3 of the License, or
* // (at your option) any later version.
* //
* // Catapult is distributed in the hope that it will be useful,
* // but WITHOUT ANY WARRANTY; without even the implied warranty of
* // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* // GNU Lesser General Public License for more details.
* //
* // You should have received a copy of the GNU Lesser General Public License
* // along with Catapult. If not, see <http://www.gnu.org/licenses/>.
*/
use super::generator_utils::*;
use super::proof_gamma_dto::*;
use super::proof_scalar_dto::*;
use super::proof_verification_hash_dto::*;
/// Verfiable random function proof.
#[derive(Debug, Clone)]
pub struct VrfProofBuilder {
/// Gamma.
gamma: ProofGammaDto,
/// Verification hash.
verification_hash: ProofVerificationHashDto,
/// Scalar.
scalar: ProofScalarDto,
}
impl VrfProofBuilder {
/// Creates an instance of VrfProofBuilder from binary payload.
/// payload: Byte payload to use to serialize the object.
/// # Returns
/// A VrfProofBuilder.
pub fn from_binary(_bytes: &[u8]) -> Self {
let gamma = ProofGammaDto::from_binary(&_bytes); // kind:CUSTOM1
let mut _bytes = _bytes[gamma.get_size()..].to_vec();
let verification_hash = ProofVerificationHashDto::from_binary(&_bytes); // kind:CUSTOM1
let mut _bytes = _bytes[verification_hash.get_size()..].to_vec();
let scalar = ProofScalarDto::from_binary(&_bytes); // kind:CUSTOM1
let mut _bytes = _bytes[scalar.get_size()..].to_vec();
VrfProofBuilder { gamma, verification_hash, scalar }
}
/// Gets gamma.
///
/// # Returns
/// A Gamma.
pub fn get_gamma(&self) -> ProofGammaDto {
self.gamma.clone()
}
/// Gets verification hash.
///
/// # Returns
/// A Verification hash.
pub fn get_verification_hash(&self) -> ProofVerificationHashDto {
self.verification_hash.clone()
}
/// Gets scalar.
///
/// # Returns
/// A Scalar.
pub fn get_scalar(&self) -> ProofScalarDto {
self.scalar.clone()
}
/// Gets the size of the type.
///
/// Returns:
/// A size in bytes.
pub fn get_size(&self) -> usize {
let mut size = 0;
size += self.gamma.get_size(); // gamma;
size += self.verification_hash.get_size(); // verification_hash;
size += self.scalar.get_size(); // scalar;
size
}
/// Serializes self to bytes.
///
/// # Returns
/// A Serialized bytes.
pub fn serializer(&self) -> Vec<u8> {
let mut buf: Vec<u8> = vec![];
buf.append(&mut self.gamma.serializer()); // kind:CUSTOM
buf.append(&mut self.verification_hash.serializer()); // kind:CUSTOM
buf.append(&mut self.scalar.serializer()); // kind:CUSTOM
buf
}
}