github.com/zmap/zlint@v1.1.0/lints/lint_rsa_mod_less_than_2048_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  /************************************************
    18  Change this to match source TEXT
    19  ************************************************/
    20  
    21  import (
    22  	"crypto/rsa"
    23  
    24  	"github.com/zmap/zcrypto/x509"
    25  	"github.com/zmap/zlint/util"
    26  )
    27  
    28  type rsaParsedTestsKeySize struct{}
    29  
    30  func (l *rsaParsedTestsKeySize) Initialize() error {
    31  	return nil
    32  }
    33  
    34  func (l *rsaParsedTestsKeySize) CheckApplies(c *x509.Certificate) bool {
    35  	_, ok := c.PublicKey.(*rsa.PublicKey)
    36  	return ok && c.PublicKeyAlgorithm == x509.RSA && c.NotAfter.After(util.NoRSA1024Date.Add(-1))
    37  }
    38  
    39  func (l *rsaParsedTestsKeySize) Execute(c *x509.Certificate) *LintResult {
    40  	key := c.PublicKey.(*rsa.PublicKey)
    41  	if key.N.BitLen() < 2048 {
    42  		return &LintResult{Status: Error}
    43  	} else {
    44  		return &LintResult{Status: Pass}
    45  	}
    46  }
    47  
    48  func init() {
    49  	RegisterLint(&Lint{
    50  		Name:          "e_rsa_mod_less_than_2048_bits",
    51  		Description:   "For certificates valid after 31 Dec 2013, all certificates using RSA public key algorithm MUST have 2048 bits of modulus",
    52  		Citation:      "BRs: 6.1.5",
    53  		Source:        CABFBaselineRequirements,
    54  		EffectiveDate: util.ZeroDate,
    55  		Lint:          &rsaParsedTestsKeySize{},
    56  	})
    57  }