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package mozilla
/*
* 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 (
"fmt"
"github.com/zmap/zcrypto/x509"
"github.com/zmap/zlint/v3/lint"
"github.com/zmap/zlint/v3/util"
)
type rsaPssInSPKI struct{}
/************************************************
https://www.mozilla.org/en-US/about/governance/policies/security-group/certs/policy/
Section 5.1.1 RSA
CAs MUST NOT use the id-RSASSA-PSS OID (1.2.840.113549.1.1.10) within a SubjectPublicKeyInfo to represent a RSA key.
************************************************/
func init() {
lint.RegisterCertificateLint(&lint.CertificateLint{
LintMetadata: lint.LintMetadata{
Name: "e_mp_rsassa-pss_in_spki",
Description: "CAs MUST NOT use the id-RSASSA-PSS OID (1.2.840.113549.1.1.10) within a SubjectPublicKeyInfo to represent a RSA key.",
Citation: "Mozilla Root Store Policy / Section 5.1.1",
Source: lint.MozillaRootStorePolicy,
EffectiveDate: util.MozillaPolicy27Date,
},
Lint: NewRsaPssInSPKI,
})
}
func NewRsaPssInSPKI() lint.LintInterface {
return &rsaPssInSPKI{}
}
func (l *rsaPssInSPKI) CheckApplies(c *x509.Certificate) bool {
// always check, no certificate is allowed to contain the PSS OID in public key
return true
}
func (l *rsaPssInSPKI) Execute(c *x509.Certificate) *lint.LintResult {
publicKeyOID, err := util.GetPublicKeyOID(c)
if err != nil {
return &lint.LintResult{Status: lint.Error, Details: fmt.Sprintf("error reading OID in certificate SubjectPublicKeyInfo: %v", err)}
}
if publicKeyOID.Equal(util.OidRSASSAPSS) {
return &lint.LintResult{Status: lint.Error, Details: "id-RSASSA-PSS OID found in certificate SubjectPublicKeyInfo"}
}
return &lint.LintResult{Status: lint.Pass}
}
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