chromium/components/trusted_vault/trusted_vault_crypto.cc

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "components/trusted_vault/trusted_vault_crypto.h"

#include "base/check_op.h"
#include "components/trusted_vault/securebox.h"
#include "crypto/hmac.h"

namespace trusted_vault {

namespace {

const size_t kHMACDigestLength = …;
const uint8_t kWrappedKeyHeader[] = …;

}  // namespace

std::optional<std::vector<uint8_t>> DecryptTrustedVaultWrappedKey(
    const SecureBoxPrivateKey& private_key,
    base::span<const uint8_t> wrapped_key) { … }

std::vector<uint8_t> ComputeTrustedVaultWrappedKey(
    const SecureBoxPublicKey& public_key,
    base::span<const uint8_t> trusted_vault_key) { … }

std::vector<uint8_t> ComputeMemberProof(
    const SecureBoxPublicKey& key,
    const std::vector<uint8_t>& trusted_vault_key) { … }

bool VerifyMemberProof(const SecureBoxPublicKey& key,
                       const std::vector<uint8_t>& trusted_vault_key,
                       const std::vector<uint8_t>& member_proof) { … }

std::vector<uint8_t> ComputeRotationProofForTesting(  // IN-TEST
    const std::vector<uint8_t>& trusted_vault_key,
    const std::vector<uint8_t>& prev_trusted_vault_key) { … }

bool VerifyRotationProof(const std::vector<uint8_t>& trusted_vault_key,
                         const std::vector<uint8_t>& prev_trusted_vault_key,
                         const std::vector<uint8_t>& rotation_proof) { … }

}  // namespace trusted_vault