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// Copyright 2018 Google LLC. All Rights Reserved.
//
// 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 ctpolicy
import (
"github.com/google/certificate-transparency-go/loglist3"
"github.com/google/certificate-transparency-go/x509"
)
// AppleCTPolicy implements logic for complying with Apple's CT log policy.
type AppleCTPolicy struct{}
// LogsByGroup describes submission requirements for embedded SCTs according to
// https://support.apple.com/en-us/HT205280. Returns an error if it's not
// possible to satisfy the policy with the provided loglist.
func (appleP AppleCTPolicy) LogsByGroup(cert *x509.Certificate, approved *loglist3.LogList) (LogPolicyData, error) {
var incCount int
switch m := lifetimeInMonths(cert); {
case m < 15:
incCount = 2
case m <= 27:
incCount = 3
case m <= 39:
incCount = 4
default:
incCount = 5
}
baseGroup, err := BaseGroupFor(approved, incCount)
if err != nil {
return nil, err
}
groups := LogPolicyData{baseGroup.Name: baseGroup}
return groups, nil
}
// Name returns label for the submission policy.
func (appleP AppleCTPolicy) Name() string {
return "Apple"
}
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