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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/cryptohome/auth_factor.h"
#include <utility>
#include <variant>
#include "base/check_op.h"
#include "base/time/time.h"
#include "chromeos/ash/components/cryptohome/common_types.h"
#include "components/version_info/version_info.h"
namespace cryptohome {
const char kFallbackFactorVersion[] = "0.0.0.0";
// =============== `AuthFactorRef` ===============
AuthFactorRef::AuthFactorRef(AuthFactorType type, KeyLabel label)
: type_(type), label_(std::move(label)) {
DCHECK(!label_->empty());
}
AuthFactorRef::AuthFactorRef(AuthFactorRef&&) = default;
AuthFactorRef& AuthFactorRef::operator=(AuthFactorRef&&) = default;
AuthFactorRef::AuthFactorRef(const AuthFactorRef&) = default;
AuthFactorRef& AuthFactorRef::operator=(const AuthFactorRef&) = default;
AuthFactorRef::~AuthFactorRef() = default;
bool AuthFactorRef::operator==(const AuthFactorRef& other) const {
const bool equal = label_.value() == other.label_.value();
CHECK(!equal || type_ == other.type_);
return equal;
}
// =============== `AuthFactorCommonMetadata` ===============
AuthFactorCommonMetadata::AuthFactorCommonMetadata()
: chrome_version_last_updated_(
ComponentVersion(std::string(version_info::GetVersionNumber()))) {}
AuthFactorCommonMetadata::AuthFactorCommonMetadata(ComponentVersion chrome,
ComponentVersion chromeos,
LockoutPolicy lockout_policy)
: chrome_version_last_updated_(std::move(chrome)),
chromeos_version_last_updated_(std::move(chromeos)),
lockout_policy_(lockout_policy) {}
AuthFactorCommonMetadata::AuthFactorCommonMetadata(
AuthFactorCommonMetadata&&) noexcept = default;
AuthFactorCommonMetadata& AuthFactorCommonMetadata::operator=(
AuthFactorCommonMetadata&&) noexcept = default;
AuthFactorCommonMetadata::AuthFactorCommonMetadata(
const AuthFactorCommonMetadata&) = default;
AuthFactorCommonMetadata& AuthFactorCommonMetadata::operator=(
const AuthFactorCommonMetadata&) = default;
AuthFactorCommonMetadata::~AuthFactorCommonMetadata() = default;
bool AuthFactorCommonMetadata::operator==(
const AuthFactorCommonMetadata& other) const {
return (this->chrome_version_last_updated_ ==
other.chrome_version_last_updated_) &&
(this->chromeos_version_last_updated_ ==
other.chromeos_version_last_updated_);
}
// =============== `Factor-specific Status` ===============
PinStatus::PinStatus() : available_at_(base::Time::Now()) {}
PinStatus::PinStatus(base::TimeDelta available_in)
: available_at_(base::Time::Now() + available_in) {}
PinStatus::PinStatus(PinStatus&&) noexcept = default;
PinStatus& PinStatus::operator=(PinStatus&&) noexcept = default;
PinStatus::PinStatus(const PinStatus&) = default;
PinStatus& PinStatus::operator=(const PinStatus&) = default;
PinStatus::~PinStatus() = default;
bool PinStatus::IsLockedFactor() const {
return base::Time::Now() < available_at_;
}
base::Time PinStatus::AvailableAt() const {
return available_at_;
}
// =============== `Factor-specific Metadata` ===============
PasswordMetadata PasswordMetadata::CreateWithoutSalt() {
return PasswordMetadata(std::nullopt);
}
PasswordMetadata PasswordMetadata::CreateForOnlinePassword(SystemSalt salt) {
return PasswordMetadata(KnowledgeFactorHashInfo{
.algorithm = KnowledgeFactorHashAlgorithmWrapper::kSha256TopHalf,
.salt = std::move(*salt),
.should_generate_key_store = false,
});
}
PasswordMetadata PasswordMetadata::CreateForLocalPassword(SystemSalt salt) {
return PasswordMetadata(KnowledgeFactorHashInfo{
.algorithm = KnowledgeFactorHashAlgorithmWrapper::kSha256TopHalf,
.salt = std::move(*salt),
.should_generate_key_store = true,
});
}
PasswordMetadata::PasswordMetadata(
std::optional<KnowledgeFactorHashInfo> hash_info)
: hash_info_(std::move(hash_info)) {}
PasswordMetadata::PasswordMetadata(PasswordMetadata&&) noexcept = default;
PasswordMetadata& PasswordMetadata::operator=(PasswordMetadata&&) noexcept =
default;
PasswordMetadata::PasswordMetadata(const PasswordMetadata&) = default;
PasswordMetadata& PasswordMetadata::operator=(const PasswordMetadata&) =
default;
PasswordMetadata::~PasswordMetadata() = default;
PinMetadata PinMetadata::CreateWithoutSalt() {
return PinMetadata(std::nullopt);
}
PinMetadata PinMetadata::Create(PinSalt salt) {
return PinMetadata(KnowledgeFactorHashInfo{
.algorithm = KnowledgeFactorHashAlgorithmWrapper::kPbkdf2Aes2561234,
.salt = std::move(*salt),
.should_generate_key_store = true,
});
}
PinMetadata::PinMetadata(std::optional<KnowledgeFactorHashInfo> hash_info)
: hash_info_(std::move(hash_info)) {}
PinMetadata::PinMetadata(PinMetadata&&) noexcept = default;
PinMetadata& PinMetadata::operator=(PinMetadata&&) noexcept = default;
PinMetadata::PinMetadata(const PinMetadata&) = default;
PinMetadata& PinMetadata::operator=(const PinMetadata&) = default;
PinMetadata::~PinMetadata() = default;
// =============== `AuthFactor` ===============
AuthFactor::AuthFactor(AuthFactorRef ref, AuthFactorCommonMetadata metadata)
: ref_(std::move(ref)), common_metadata_(std::move(metadata)) {}
AuthFactor::AuthFactor(AuthFactorRef ref,
AuthFactorCommonMetadata metadata,
PinMetadata pin_metadata,
PinStatus status)
: ref_(std::move(ref)),
common_metadata_(std::move(metadata)),
factor_metadata_(std::move(pin_metadata)),
factor_status_(std::move(status)) {
CHECK_EQ(ref_.type(), AuthFactorType::kPin);
}
AuthFactor::AuthFactor(AuthFactorRef ref,
AuthFactorCommonMetadata metadata,
SmartCardMetadata factor_metadata)
: ref_(std::move(ref)),
common_metadata_(std::move(metadata)),
factor_metadata_(std::move(factor_metadata)) {
CHECK_EQ(ref_.type(), AuthFactorType::kSmartCard);
}
AuthFactor::AuthFactor(AuthFactorRef ref,
AuthFactorCommonMetadata metadata,
CryptohomeRecoveryMetadata factor_metadata)
: ref_(std::move(ref)),
common_metadata_(std::move(metadata)),
factor_metadata_(std::move(factor_metadata)) {
CHECK_EQ(ref_.type(), AuthFactorType::kRecovery);
}
AuthFactor::AuthFactor(AuthFactorRef ref,
AuthFactorCommonMetadata metadata,
PasswordMetadata factor_metadata)
: ref_(std::move(ref)),
common_metadata_(std::move(metadata)),
factor_metadata_(std::move(factor_metadata)) {
CHECK_EQ(ref_.type(), AuthFactorType::kPassword);
}
AuthFactor::AuthFactor(AuthFactorRef ref,
AuthFactorCommonMetadata metadata,
PinMetadata factor_metadata)
: ref_(std::move(ref)),
common_metadata_(std::move(metadata)),
factor_metadata_(std::move(factor_metadata)) {
CHECK_EQ(ref_.type(), AuthFactorType::kPin);
}
AuthFactor::AuthFactor(AuthFactorRef ref,
AuthFactorCommonMetadata metadata,
FingerprintMetadata fingerprint_metadata)
: ref_(std::move(ref)),
common_metadata_(std::move(metadata)),
factor_metadata_(std::move(fingerprint_metadata)) {
CHECK_EQ(ref_.type(), AuthFactorType::kFingerprint);
}
AuthFactor::AuthFactor(AuthFactor&&) noexcept = default;
AuthFactor& AuthFactor::operator=(AuthFactor&&) noexcept = default;
AuthFactor::AuthFactor(const AuthFactor&) = default;
AuthFactor& AuthFactor::operator=(const AuthFactor&) = default;
AuthFactor::~AuthFactor() = default;
bool AuthFactor::operator==(const AuthFactor& other) const {
return ref_ == other.ref_ && common_metadata_ == other.common_metadata_;
}
const AuthFactorRef& AuthFactor::ref() const {
return ref_;
}
const AuthFactorCommonMetadata& AuthFactor::GetCommonMetadata() const {
return common_metadata_;
}
const PinStatus& AuthFactor::GetPinStatus() const {
return std::get<PinStatus>(factor_status_);
}
const SmartCardMetadata& AuthFactor::GetSmartCardMetadata() const {
return std::get<SmartCardMetadata>(factor_metadata_);
}
const CryptohomeRecoveryMetadata& AuthFactor::GetCryptohomeRecoveryMetadata()
const {
return std::get<CryptohomeRecoveryMetadata>(factor_metadata_);
}
const PasswordMetadata& AuthFactor::GetPasswordMetadata() const {
return std::get<PasswordMetadata>(factor_metadata_);
}
const PinMetadata& AuthFactor::GetPinMetadata() const {
return std::get<PinMetadata>(factor_metadata_);
}
const FingerprintMetadata& AuthFactor::GetFingerprintMetadata() const {
return std::get<FingerprintMetadata>(factor_metadata_);
}
} // namespace cryptohome
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