クライアント証明書認証(Apache+OpenSSL)

最終更新日： 2019.06.17

[root@centos ~]# vi /etc/pki/tls/misc/CA　←　CAスクリプト編集
CADAYS="-days 36500"　←　CA証明書有効期限を100年(事実上無期限)にする

[root@centos ~]# vi /etc/pki/tls/openssl.cnf　←　openssl.cnf編集
# Extensions to add to a CRL. Note: Netscape communicator chokes on V2 CRLs
# so this is commented out by default to leave a V1 CRL.
# crlnumber must also be commented out to leave a V1 CRL.
# crl_extensions        = crl_ext

default_days    = 36500　←　クライアント証明書有効期限を100年(事実上無期限)にする
default_crl_days= 30                    # how long before next CRL
default_md      = sha256                # use SHA-256 by default
preserve        = no                    # keep passed DN ordering

[ req_distinguished_name ]
countryName                     = Country Name (2 letter code)
countryName_default             = JP　←　国コードを指定
countryName_min                 = 2
countryName_max                 = 2

stateOrProvinceName             = State or Province Name (full name)
#stateOrProvinceName_default    = Default Province
stateOrProvinceName_default     = Tokyo　←　都道府県を指定

localityName                    = Locality Name (eg, city)
localityName_default            = shinjuku　←　市区町村を指定

0.organizationName              = Organization Name (eg, company)
0.organizationName_default      = centossrv.com　←　サーバー名を指定

# we can do this but it is not needed normally :-)
#1.organizationName             = Second Organization Name (eg, company)
#1.organizationName_default     = World Wide Web Pty Ltd

organizationalUnitName          = Organizational Unit Name (eg, section)
#organizationalUnitName_default =

commonName                      = Common Name (eg, your name or your server\'s hostname)
commonName_max                  = 64

emailAddress                    = Email Address
emailAddress_max                = 64
emailAddress_default            = webmaster@centossrv.com　←　サーバー管理者メールアドレスを指定

[root@centos ~]# cp /etc/pki/tls/openssl.cnf /etc/pki/tls/openssl-ca.cnf　←　openssl.cnfをコピーしてCA用openssl.cnfを作成

[root@centos ~]# vi /etc/pki/tls/openssl-ca.cnf　←　CA用openssl.cnf編集
[ usr_cert ]

# These extensions are added when 'ca' signs a request.

# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.

basicConstraints=CA:TRUE　←　CA用にする

[ v3_ca ]


# Extensions for a typical CA


# PKIX recommendation.

subjectKeyIdentifier=hash

authorityKeyIdentifier=keyid:always,issuer

# This is what PKIX recommends but some broken software chokes on critical
# extensions.
#basicConstraints = critical,CA:true
# So we do this instead.
basicConstraints = CA:true

# Key usage: this is typical for a CA certificate. However since it will
# prevent it being used as an test self-signed certificate it is best
# left out by default.
# keyUsage = cRLSign, keyCertSign

# Some might want this also
nsCertType = sslCA, emailCA　←　CA用にする

[root@centos ~]# cp /etc/pki/tls/openssl.cnf /etc/pki/tls/openssl-client.cnf　←　openssl.cnfをコピーしてクライアント用openssl.cnfを作成

[root@centos ~]# vi /etc/pki/tls/openssl-client.cnf　←　クライアント用openssl.cnf編集
[ usr_cert ]

# These extensions are added when 'ca' signs a request.

# This goes against PKIX guidelines but some CAs do it and some software
# requires this to avoid interpreting an end user certificate as a CA.

basicConstraints=CA:FALSE

# Here are some examples of the usage of nsCertType. If it is omitted
# the certificate can be used for anything *except* object signing.

# This is OK for an SSL server.
# nsCertType                    = server

# For an object signing certificate this would be used.
# nsCertType = objsign

# For normal client use this is typical
# nsCertType = client, email

# and for everything including object signing:
nsCertType = client, email, objsign　←　クライアント用にする

[root@centos ~]# SSLEAY_CONFIG="-config /etc/pki/tls/openssl-ca.cnf" /etc/pki/tls/misc/CA -newca　←　CA証明書作成
CA certificate filename (or enter to create)
　←　空ENTER
Making CA certificate ...
Generating a 2048 bit RSA private key
..........................+++
.........................+++
writing new private key to '/etc/pki/CA/private/./cakey.pem'
Enter PEM pass phrase:　←　任意のCA秘密鍵パスフレーズ応答
Verifying - Enter PEM pass phrase:　←　任意のCA秘密鍵パスフレーズ応答(確認)
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [JP]:　←　空ENTER
State or Province Name (full name) [Tokyo]:　←　空ENTER
Locality Name (eg, city) [shinjuku]:　←　空ENTER
Organization Name (eg, company) [centossrv.com]:　←　空ENTER
Organizational Unit Name (eg, section) []:　←　空ENTER
Common Name (eg, your name or your server's hostname) []:centossrv.com　←　サーバー名を応答
Email Address [webmaster@centossrv.com]:　←　空ENTER

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:　←　空ENTER
An optional company name []:　←　空ENTER
Using configuration from /etc/pki/tls/openssl-ca.cnf
Enter pass phrase for /etc/pki/CA/private/./cakey.pem:　←　CA秘密鍵パスフレーズ応答
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            a9:30:4e:7e:67:c0:62:1b
        Validity
            Not Before: Oct 17 04:12:26 2017 GMT
            Not After : Sep 23 04:12:26 2117 GMT
        Subject:
            countryName               = JP
            stateOrProvinceName       = Tokyo
            organizationName          = centossrv.com
            commonName                = centossrv.com
            emailAddress              = webmaster@centossrv.com
        X509v3 extensions:
            X509v3 Subject Key Identifier:
                5D:D8:35:14:AE:15:42:2A:BA:AA:2E:C0:58:27:01:33:D3:9E:CF:FC
            X509v3 Authority Key Identifier:
                keyid:5D:D8:35:14:AE:15:42:2A:BA:AA:2E:C0:58:27:01:33:D3:9E:CF:FC

            X509v3 Basic Constraints:
                CA:TRUE
            Netscape Cert Type:
                SSL CA, S/MIME CA
Certificate is to be certified until Sep 23 04:12:26 2117 GMT (36500 days)

Write out database with 1 new entries
Data Base Updated

[root@centos ~]# echo 00 > /etc/pki/CA/crlnumber　←　証明書失効に必要なcrlnumber初期作成※証明書失効については後述

[root@centos ~]# openssl ca -gencrl -out /etc/pki/CA/crl.pem　←　証明書失効リスト作成※証明書失効については後述
Using configuration from /etc/pki/tls/openssl.cnf
Enter pass phrase for /etc/pki/CA/private/cakey.pem:　←　CA秘密鍵パスフレーズ応答

[root@centos ~]# SSLEAY_CONFIG="-config /etc/pki/tls/openssl-client.cnf" /etc/pki/tls/misc/CA -newreq　←　クライアント秘密鍵・署名要求作成
Generating a 2048 bit RSA private key
......+++
.........+++
writing new private key to 'newkey.pem'
Enter PEM pass phrase:　←　任意のクライアント証明書パスフレーズ応答
Verifying - Enter PEM pass phrase:　←　任意のクライアント証明書パスフレーズ応答(確認)
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [JP]:　←　空ENTER
State or Province Name (full name) [Tokyo]:　←　空ENTER
Locality Name (eg, city) [shinjuku]:　←　空ENTER
Organization Name (eg, company) [centossrv.com]:　←　空ENTER
Organizational Unit Name (eg, section) []:　←　空ENTER
Common Name (eg, your name or your server's hostname) []:user1　←　任意のユーザー名を応答
Email Address [webmaster@centossrv.com]:user1@centossrv.com　←　ユーザーのメールアドレスを応答

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:　←　空ENTER
An optional company name []:　←　空ENTER
Request is in newreq.pem, private key is in newkey.pem

[root@centos ~]# SSLEAY_CONFIG="-config /etc/pki/tls/openssl-client.cnf" /etc/pki/tls/misc/CA -sign　←　クライアント署名要求に署名してクライアント証明書作成
Using configuration from /etc/pki/tls/openssl.cnf
Enter pass phrase for /etc/pki/CA/private/cakey.pem:　←　CA秘密鍵パスフレーズ応答
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            b4:2b:0c:e4:e7:18:6e:ea
        Validity
            Not Before: Oct 16 05:11:27 2017 GMT
            Not After : Sep 22 05:11:27 2117 GMT
        Subject:
            countryName               = JP
            stateOrProvinceName       = Tokyo
            localityName              = shinjuku
            organizationName          = centossrv.com
            commonName                = user1
            emailAddress              = user1@centossrv.com
        X509v3 extensions:
            X509v3 Basic Constraints:
                CA:FALSE
            Netscape Comment:
                OpenSSL Generated Certificate
            X509v3 Subject Key Identifier:
                BD:E1:55:B3:90:08:50:B0:36:48:08:E0:FA:A7:70:E3:80:E9:C3:61
            X509v3 Authority Key Identifier:
                keyid:21:05:77:E9:A5:E6:DE:8D:46:F6:1B:43:5A:E2:2C:C0:60:13:BE:37

Certificate is to be certified until Sep 22 05:11:27 2117 GMT (36500 days)
Sign the certificate? [y/n]:y　←　y応答


1 out of 1 certificate requests certified, commit? [y/n]y　←　y応答
Write out database with 1 new entries
Data Base Updated
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            b4:2b:0c:e4:e7:18:6e:ea
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: C=JP, ST=Tokyo, O=centossrv.com, CN=centossrv.com/emailAddress=webmaster@centossrv.com
        Validity
            Not Before: Oct 16 05:11:27 2017 GMT
            Not After : Sep 22 05:11:27 2117 GMT
        Subject: C=JP, ST=Tokyo, L=shinjuku, O=centossrv.com, CN=user1/emailAddress=user1@centossrv.com
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:da:23:83:62:33:53:a1:ca:88:1a:2f:e0:ea:ff:
                    f9:ce:2f:dc:a4:ad:1c:78:6f:16:f2:48:a6:54:28:
                    1b:db:a7:01:a2:f3:3d:32:c6:b8:f2:91:86:a2:62:
                    73:f0:e0:f5:89:cb:24:9b:e8:e0:f8:1a:32:62:a9:
                    5e:b8:74:a0:e7:59:d0:fb:4d:3d:e6:70:3e:7e:4a:
                    27:c3:c1:b6:bc:f4:b3:89:6e:eb:a8:7f:e3:01:17:
                    19:90:4a:44:a0:38:2c:2b:3c:b9:ee:7b:98:53:58:
                    f1:17:ac:fa:8d:a1:7e:2c:ef:ab:54:1a:d2:07:90:
                    22:0d:a9:19:69:7b:da:a6:78:e3:4e:7f:98:43:81:
                    76:7f:b7:ae:02:61:39:39:9f:7e:7b:4e:50:12:c9:
                    2d:b6:39:a1:01:96:fa:9f:e7:6d:03:1a:f1:3b:98:
                    e3:aa:de:34:b5:cd:c0:73:47:74:f2:5c:2a:89:3c:
                    44:5f:a3:5d:35:72:82:82:bf:f6:64:6a:db:17:97:
                    c4:0f:ec:37:46:63:7f:ac:de:25:2d:58:2a:e2:2a:
                    af:53:02:11:bd:39:16:ae:f3:b6:70:bd:6c:25:87:
                    ce:7e:33:2f:d5:0a:13:86:bd:26:f8:9f:45:e3:77:
                    9c:29:97:1f:cf:c8:9f:3c:42:f4:65:87:c1:73:81:
                    7c:75
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Basic Constraints:
                CA:FALSE
            Netscape Comment:
                OpenSSL Generated Certificate
            X509v3 Subject Key Identifier:
                BD:E1:55:B3:90:08:50:B0:36:48:08:E0:FA:A7:70:E3:80:E9:C3:61
            X509v3 Authority Key Identifier:
                keyid:21:05:77:E9:A5:E6:DE:8D:46:F6:1B:43:5A:E2:2C:C0:60:13:BE:37

    Signature Algorithm: sha256WithRSAEncryption
         84:f3:b9:52:d9:8e:d6:75:cf:2b:0b:c1:a0:ba:6f:71:4e:d2:
         39:18:03:2a:3d:1d:d3:86:8c:5d:27:4e:4b:c4:5e:ae:fe:4a:
         e8:ee:8c:22:4f:70:29:11:d4:8c:b3:e8:92:9a:09:03:45:7d:
         19:8a:f8:7c:10:53:2f:f9:d2:28:8a:78:84:d0:bb:7d:67:80:
         45:02:94:01:36:02:9e:fa:a9:93:f2:83:62:d7:62:a4:78:49:
         c5:e1:36:88:bf:f0:8d:b0:77:39:e0:38:ea:d6:29:1b:56:98:
         ff:56:95:fa:83:c4:43:b6:62:c5:fb:96:71:69:d1:c2:4a:b8:
         c7:08:0f:ab:2b:0d:4c:78:94:e8:a1:8e:bd:fc:ee:68:35:9f:
         42:5e:65:78:4e:d0:7c:b5:63:bc:b5:9c:6e:c1:30:ad:0e:46:
         a1:c7:25:79:f8:b1:f8:34:5f:00:d0:67:6f:94:36:b6:35:46:
         6a:84:07:b8:a2:f7:f8:c6:c6:14:f5:14:74:3d:b3:19:3d:cf:
         e4:56:64:3a:9f:0b:da:16:cd:82:ca:ab:27:7a:45:68:51:55:
         a3:9f:74:c9:3b:96:ed:91:92:68:ff:ba:f0:a7:ff:e8:16:d9:
         94:d9:91:33:7f:5c:de:b6:9b:c0:c8:90:eb:8d:79:a8:61:ed:
         fa:84:f8:39
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
Signed certificate is in newcert.pem

[root@centos ~]# openssl pkcs12 -export -in newcert.pem -inkey newkey.pem -certfile /etc/pki/CA/cacert.pem -out 任意のユーザー名.p12　←　クライアント向けクライアント証明書登録ファイル作成
Enter pass phrase for newkey.pem:　←　クライアント証明書パスフレーズ
Enter Export Password:　←　任意のクライアント証明書登録用パスフレーズ※クライアント証明書をクライアントの端末にインストールするときに必要
Verifying - Enter Export Password:　←　任意のクライアント証明書登録用パスフレーズ(確認)

ここで作成された「ユーザー名.p12」ファイルをクライアントへ送付する

[root@centos ~]# openssl req -config /etc/pki/tls/openssl-client.cnf -new -keyout newkey.pem -out newreq.pem -days 36500 -passout pass:任意のクライアント証明書パスフレーズ -subj "/CN=${CN:-任意のユーザー名}"　←　クライアント秘密鍵・署名要求作成
Generating a 2048 bit RSA private key
........................................+++
..+++
writing new private key to 'newkey.pem'
-----

[root@centos ~]# openssl ca -batch -key CA秘密鍵パスフレーズ -config /etc/pki/tls/openssl-client.cnf -policy policy_anything -out newcert.pem -infiles newreq.pem　←　クライアント署名要求に署名してクライアント証明書作成
Using configuration from /etc/pki/tls/openssl-client.cnf
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number:
            a9:30:4e:7e:67:c0:62:1e
        Validity
            Not Before: Oct 17 04:45:54 2017 GMT
            Not After : Sep 23 04:45:54 2117 GMT
        Subject:
            commonName                = user1
        X509v3 extensions:
            X509v3 Basic Constraints:
                CA:FALSE
            Netscape Cert Type:
                SSL Client, S/MIME, Object Signing
            Netscape Comment:
                OpenSSL Generated Certificate
            X509v3 Subject Key Identifier:
                80:2E:01:40:D9:BB:B3:7E:20:09:1A:41:D1:30:6B:0B:4E:0D:68:51
            X509v3 Authority Key Identifier:
                keyid:5D:D8:35:14:AE:15:42:2A:BA:AA:2E:C0:58:27:01:33:D3:9E:CF:FC

Certificate is to be certified until Sep 23 04:45:54 2117 GMT (36500 days)

Write out database with 1 new entries
Data Base Updated

[root@centos ~]# openssl pkcs12 -passin pass:クライアント証明書パスフレーズ -passout pass:任意のクライアント証明書登録用パスフレーズ -in newcert.pem -inkey newkey.pem -certfile /etc/pki/CA/cacert.pem -out 任意のユーザー名.p12 -export　←　クライアント向けクライアント証明書登録ファイル作成

ここで作成された「ユーザー名.p12」ファイルをクライアントへ送付する

[root@centos ~]# cp newcert.pem /etc/pki/CA/certs/任意のユーザー名.crt　←　クライアント証明書を失効用に退避※証明書失効については後述

[root@centos ~]# rm -f newcert.pem newkey.pem newreq.pem　←　後始末

BASIC認証用ユーザーデータベース(例:/etc/httpd/conf/.htpasswd)がない場合＝1件目の場合
[root@centos ~]# htpasswd -bcm /etc/httpd/conf/.htpasswd `openssl x509 -noout -subject -in /etc/pki/CA/certs/ユーザー名.crt |sed -e 's/subject= \([^ ]*\)/\1/p' -e d` password　←　クライアント証明書をBASIC認証用ユーザーデータベース(例:/etc/httpd/conf/.htpasswd)へ登録

BASIC認証用ユーザーデータベース(例:/etc/httpd/conf/.htpasswd)がある場合＝2件目以降の場合
[root@centos ~]# htpasswd -bm /etc/httpd/conf/.htpasswd `openssl x509 -noout -subject -in /etc/pki/CA/certs/ユーザー名.crt |sed -e 's/subject= \([^ ]*\)/\1/p' -e d` password　←　クライアント証明書をBASIC認証用ユーザーデータベース(例:/etc/httpd/conf/.htpasswd)へ登録

※下線部のpasswordは例ではないので、そのままpasswordと指定すること

[root@centos ~]# vi /etc/httpd/conf.d/ssl.conf　←　SSL設定ファイル編集
[root@centos ~]# vi /etc/httpd/conf.d/virtualhost-centossrv.com.conf　←　SSL設定ファイル編集※バーチャルホスト設定している場合
#   Certificate Authority (CA):
#   Set the CA certificate verification path where to find CA
#   certificates for client authentication or alternatively one
#   huge file containing all of them (file must be PEM encoded)
#SSLCACertificateFile /etc/pki/tls/certs/ca-bundle.crt
#SSLCACertificateFile /etc/pki/tls/certs/ca.pem
SSLCACertificateFile /etc/pki/CA/cacert.pem　←　CA証明書
SSLCARevocationFile /etc/pki/CA/crl.pem　←　証明書失効リスト
SSLCARevocationCheck chain　←　証明書失効リストチェック有効化

[root@centos ~]# systemctl reload httpd　←　Apache設定反映

[root@centos ~]# openssl ca -gencrl -revoke /etc/pki/CA/certs/ユーザー名.crt　←　クライアント証明書失効
Using configuration from /etc/pki/tls/openssl.cnf
Enter pass phrase for /etc/pki/CA/private/cakey.pem:　←　CA秘密鍵パスフレーズ応答
-----BEGIN X509 CRL-----
MIICsjCCAZoCAQEwDQYJKoZIhvcNAQELBQAwdTELMAkGA1UEBhMCSlAxDjAMBgNV
BAgMBVRva3lvMRYwFAYDVQQKDA1jZW50b3NzcnYuY29tMRYwFAYDVQQDDA1jZW50
b3NzcnYuY29tMSYwJAYJKoZIhvcNAQkBFhd3ZWJtYXN0ZXJAY2VudG9zc3J2LmNv
bRcNMTcxMDE3MDg0MjA3WhcNMTcxMTE2MDg0MjA3WjCB4DAaAgkAqTBOfmfAYhwX
DTE3MTAxNzA0MzMxOVowGgIJAKkwTn5nwGIeFw0xNzEwMTcwNDQ5MjJaMBoCCQCp
ME5+Z8BiHxcNMTcxMDE3MDUwNjU1WjAaAgkAqTBOfmfAYiAXDTE3MTAxNzA1MzQx
NlowGgIJAKkwTn5nwGIhFw0xNzEwMTcwNzUyMzBaMBoCCQCpME5+Z8BiIhcNMTcx
MDE3MDc1NTQ4WjAaAgkAqTBOfmfAYiMXDTE3MTAxNzA4MTg0OVowGgIJAKkwTn5n
wGIkFw0xNzEwMTcwODM3MDdaoA4wDDAKBgNVHRQEAwIBATANBgkqhkiG9w0BAQsF
AAOCAQEA7Xx4PxTejaONp+J8pd8zx1yy3SSeYgIBAmWWvsJBjmbWNATkYWTWMyc2
cvBK8dURRC6tQ7nqLEOhOAv1/jn27qylL/1pBAujbV7xDO++YsqRAn1qkr2kQmy3
vAnqA7SaCQij31410ZNxfQViD5CxDK4e36SlouqtqNONQx3Ji6VuhaiHRr9TJUxc
EKijbTOWiqYm+b1NxxmJm4y9LEL3CGVguBYHS8o6TZDWOml2O4Sz5N4Y2Gor0wnU
wUoS14e+DONCaEvJxhEblcx7Dd8zLDUkPixVqyuQIOBG7k7cWg6Jt9MtjCpHcvMl
zy+fierK3X3yjtM+QMiCh1TzwG/kRw==
-----END X509 CRL-----
Revoking Certificate A9304E7E67C0621C.
Data Base Updated

[root@centos ~]# openssl ca -gencrl -out /etc/pki/CA/crl.pem　←　証明書失効リスト更新
Using configuration from /etc/pki/tls/openssl.cnf
Enter pass phrase for /etc/pki/CA/private/cakey.pem:　←　CA秘密鍵パスフレーズ応答

[root@centos ~]# systemctl reload httpd　←　証明書失効リスト反映

[root@centos ~]# vi /etc/cron.weekly/crlupdate　←　証明書失効リスト自動更新スクリプト作成
#!/bin/bash
openssl ca -batch -key CA証明書パスフレーズ -gencrl -out /etc/pki/CA/crl.pem > /dev/null 2>&1
systemctl reload httpd > /dev/null 2>&1

[root@centos ~]# chmod 700 /etc/cron.weekly/crlupdate　←　証明書失効リスト自動更新スクリプトに実行権限付加