github.com/zmap/zlint@v1.1.0/lints/lint_old_sub_ca_rsa_mod_less_than_1024_bits.go (about)

     1  package lints
     2  
     3  /*
     4   * ZLint Copyright 2018 Regents of the University of Michigan
     5   *
     6   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
     7   * use this file except in compliance with the License. You may obtain a copy
     8   * of the License at http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
    13   * implied. See the License for the specific language governing
    14   * permissions and limitations under the License.
    15   */
    16  
    17  // CHANGE THIS COMMENT TO MATCH SOURCE TEXT
    18  
    19  import (
    20  	"crypto/rsa"
    21  
    22  	"github.com/zmap/zcrypto/x509"
    23  	"github.com/zmap/zlint/util"
    24  )
    25  
    26  type subCaModSize struct{}
    27  
    28  func (l *subCaModSize) Initialize() error {
    29  	return nil
    30  }
    31  
    32  func (l *subCaModSize) CheckApplies(c *x509.Certificate) bool {
    33  	issueDate := c.NotBefore
    34  	endDate := c.NotAfter
    35  	_, ok := c.PublicKey.(*rsa.PublicKey)
    36  	return ok && util.IsSubCA(c) && issueDate.Before(util.NoRSA1024RootDate) && endDate.Before(util.NoRSA1024Date)
    37  }
    38  
    39  func (l *subCaModSize) Execute(c *x509.Certificate) *LintResult {
    40  	key := c.PublicKey.(*rsa.PublicKey)
    41  	if key.N.BitLen() < 1024 {
    42  		return &LintResult{Status: Error}
    43  	} else {
    44  		return &LintResult{Status: Pass}
    45  	}
    46  }
    47  
    48  func init() {
    49  	RegisterLint(&Lint{
    50  		Name:        "e_old_sub_ca_rsa_mod_less_than_1024_bits",
    51  		Description: "In a validity period beginning on or before 31 Dec 2010 and ending on or before 31 Dec 2013, subordinate CA certificates using RSA public key algorithm MUST use a 1024 bit modulus",
    52  		Citation:    "BRs: 6.1.5",
    53  		Source:      CABFBaselineRequirements,
    54  		// since effective date should be checked against end date in this specific case, putting time check into checkApplies instead, ZeroDate here to automatically pass NE test
    55  		EffectiveDate: util.ZeroDate,
    56  		Lint:          &subCaModSize{},
    57  	})
    58  }