[Centos7] SSL自簽憑證+APACHE+Selinux @新精讚

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[Centos7] SSL自簽憑證+APACHE+Selinux

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SSL的自簽憑證

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2019-10-25 11:51:00 最後編修

2017-09-26 14:06:16 By 張○○

自動目錄

一、自簽Root CA
二、製作終端憑證(伺服器憑證)
三、SELINUX 及搬移
四、APACHE上設定
錯誤排除
相關連結

SSL的自簽憑證，窮人SSL，雖然網頁會跳SSL不合法的警告，此文主要參考[1]提供的指令。

SSL的憑證信任鍊 trust china 是這樣：根憑證機構(Root CA) =授權=> 中繼憑證機構(Intermedia CA) =授權=> 終端憑證機構(Endpoint CA)

* CA就是授權機構 certificate authority

一、自簽Root CA

建立私鑰

# openssl genrsa -out RootCA.key 2048

產生根憑證申請檔

# openssl req -new -key RootCA.key -out RootCA.req

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) [GB]:TW
State or Province Name (full name) [Berkshire]:Taiwan
Locality Name (eg, city) [Newbury]:Taichung
Organization Name (eg, company) [My Company Ltd]:Somewhere Co.Ltd.
Organizational Unit Name (eg, section) []:Sleep Dep.
Common Name (eg, your name or your server's hostname) []:hostname.example.com
Email Address []:<按ENTER>

Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:<按ENTER>
An optional company name []:<按ENTER>

利用申請檔產生憑證檔

# openssl x509 -req -days 3650 -sha256 -extensions v3_ca -signkey RootCA.key -in RootCA.req -out RootCA.crt

產生憑證檔RootCA.crt

接下來要拿根憑證來簽發終端憑證，因為沒有中繼憑證，所以直接來作伺服器憑證，也就是終端憑證。

二、製作終端憑證(伺服器憑證)

建立伺服器私鑰

# openssl genrsa -out ServerCert.key 2048

同上，產生憑證申請檔

# openssl req -new -key ServerCert.key -out ServerCert.req

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) [GB]:TW
State or Province Name (full name) [Berkshire]:Taiwan
Locality Name (eg, city) [Newbury]:Taichung
Organization Name (eg, company) [My Company Ltd]:Eat Co.Ltd.
Organizational Unit Name (eg, section) []:Pizza Dep.
Common Name (eg, your name or your server's hostname) []:hostname.example.com
Email Address []:<按ENTER>
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:<按ENTER>
An optional company name []:<按ENTER>

Common Name 中可以使用 wildcard寫法，例如 *.example.com

產生流水號檔

# echo 1000 > RootCA.srl

產生憑證檔一樣簽十年

# openssl x509 -req -days 3650 -sha256 -extensions v3_req -CA RootCA.crt -CAkey RootCA.key -CAserial RootCA.srl -CAcreateserial -in ServerCert.req -out ServerCert.crt

三、SELINUX 及搬移

# chcon -u system_u -t cert_t ServerCert.key ServerCert.crt RootCA.crt

複製到指定的位置

# cp ServerCert.key /etc/pki/tls/private/

# cp *.crt /etc/pki/tls/certs

四、APACHE上設定

修改 /etc/httpd/conf.d/ssl.conf

# 註解這兩項
#SSLCertificateFile /etc/pki/tls/certs/localhost.crt
#SSLCertificateKeyFile /etc/pki/tls/private/localhost.key

# 修改
Listen 443
ServerName hostname.example.com:443
SSLEngine on

# 加入這三項
SSLCertificateFile /etc/pki/tls/certs/ServerCert.crt
SSLCertificateKeyFile /etc/pki/tls/private/ServerCert.key
SSLCACertificateFile /etc/pki/tls/certs/RootCA.crt

其中ServerName要和上面設定的一樣

重新啟動 apache

# apachectl restart