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package rfc
/*
* ZLint Copyright 2024 Regents of the University of Michigan
*
* 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.
*/
import (
"github.com/zmap/zcrypto/x509"
"github.com/zmap/zlint/v3/lint"
"github.com/zmap/zlint/v3/util"
)
type subjectKeyIdCritical struct{}
/**********************************************************
RFC 5280: 4.2.1.2
Conforming CAs MUST mark this extension as non-critical.
**********************************************************/
func init() {
lint.RegisterCertificateLint(&lint.CertificateLint{
LintMetadata: lint.LintMetadata{
Name: "e_ext_subject_key_identifier_critical",
Description: "The subject key identifier extension MUST be non-critical",
Citation: "RFC 5280: 4.2.1.2",
Source: lint.RFC5280,
EffectiveDate: util.RFC2459Date,
},
Lint: NewSubjectKeyIdCritical,
})
}
func NewSubjectKeyIdCritical() lint.LintInterface {
return &subjectKeyIdCritical{}
}
func (l *subjectKeyIdCritical) CheckApplies(c *x509.Certificate) bool {
return util.IsExtInCert(c, util.SubjectKeyIdentityOID)
}
func (l *subjectKeyIdCritical) Execute(c *x509.Certificate) *lint.LintResult {
ski := util.GetExtFromCert(c, util.SubjectKeyIdentityOID) //pointer to the extension
if ski.Critical {
return &lint.LintResult{Status: lint.Error}
} else { //implies !ski.Critical
return &lint.LintResult{Status: lint.Pass}
}
}
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