github.com/zmap/zlint@v1.1.0/lints/lint_dh_params_missing.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  import (
    18  	"crypto/dsa"
    19  
    20  	"github.com/zmap/zcrypto/x509"
    21  	"github.com/zmap/zlint/util"
    22  )
    23  
    24  type dsaParamsMissing struct{}
    25  
    26  func (l *dsaParamsMissing) Initialize() error {
    27  	return nil
    28  }
    29  
    30  func (l *dsaParamsMissing) CheckApplies(c *x509.Certificate) bool {
    31  	return c.PublicKeyAlgorithm == x509.DSA
    32  }
    33  
    34  func (l *dsaParamsMissing) Execute(c *x509.Certificate) *LintResult {
    35  	dsaKey, ok := c.PublicKey.(*dsa.PublicKey)
    36  	if !ok {
    37  		return &LintResult{Status: Fatal}
    38  	}
    39  	params := dsaKey.Parameters
    40  	if params.P.BitLen() == 0 || params.Q.BitLen() == 0 || params.G.BitLen() == 0 {
    41  		return &LintResult{Status: Error}
    42  	}
    43  	return &LintResult{Status: Pass}
    44  }
    45  
    46  func init() {
    47  	RegisterLint(&Lint{
    48  		Name:          "e_dsa_params_missing",
    49  		Description:   "DSA: Certificates MUST include all domain parameters",
    50  		Citation:      "BRs: 6.1.6",
    51  		Source:        CABFBaselineRequirements,
    52  		EffectiveDate: util.CABEffectiveDate,
    53  		Lint:          &dsaParamsMissing{},
    54  	})
    55  }