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Rocky8でcfssl系コマンドをインストール

Last updated at Posted at 2022-12-05

絶対もっとスマートな方法ある。誰か教えて。

0.0 環境

Vietual Box 6.1.24
Rocky 8.5(GUI)

1.0 インストール

1.0.1 goのインストール

goのインストール
# cd /root

# pwd
/root

# curl -OL https://go.dev/dl/go1.16.15.linux-amd64.tar.gz     //バージョンは1.16がいいらしい(あまりよく知らない)
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100    76  100    76    0     0    141      0 --:--:-- --:--:-- --:--:--   141
100  123M  100  123M    0     0  12.7M      0  0:00:09  0:00:09 --:--:-- 15.7M

# tar -C /usr/local -xzf go1.16.15.linux-amd64.tar.gz

1.0.2 PATH環境変数の追加

PATH環境変数の追加
# echo "export PATH=$PATH:/usr/local/go/bin" >> /etc/profile

# export PATH=$PATH:/usr/local/go/bin

# echo $PATH

# go version     //goコマンドにパスが通るのでバージョン確認してみる
go version go1.16.15 linux/amd64

1.0.3 cfsslのインストール

cfsslのインストール(go 1.16)
# go get github.com/cloudflare/cfssl/cmd/...
go: downloading github.com/cloudflare/cfssl v1.6.3
(略)

goのバージョンが1.18以上の場合は以下で可能らしい(READMEを参照:https://github.com/cloudflare/cfssl/blob/master/README.md)

cfsslのインストール(go 1.18↑)
# go get github.com/cloudflare/cfssl/cmd/...
go: downloading github.com/cloudflare/cfssl v1.6.3
(略)

cfsslのインストール(共通)
# ls -l /root/go/bin/
合計 111700
-rwxr-xr-x 1 root root 19988976 12月  5 15:48 cfssl
-rwxr-xr-x 1 root root 13062208 12月  5 15:48 cfssl-bundle
-rwxr-xr-x 1 root root 16149080 12月  5 15:48 cfssl-certinfo
-rwxr-xr-x 1 root root 13901296 12月  5 15:48 cfssl-newkey
-rwxr-xr-x 1 root root 13559345 12月  5 15:48 cfssl-scan
-rwxr-xr-x 1 root root 10387555 12月  5 15:48 cfssljson
-rwxr-xr-x 1 root root  6741873 12月  5 15:48 mkbundle
-rwxr-xr-x 1 root root 20571944 12月  5 15:49 multirootca

# mv /root/go/bin/* /usr/local/bin/

# whereis cfssl
cfssl: /usr/local/bin/cfssl

1.1テスト(CSR作成)

JSONファイル管理用ディレクトリ作成
# mkdir -p /root/cfssltest/json
証明書内容記載JSONファイル作成
# vi /root/cfssltest/json/test.json
{
     "CN":"hogehoge.exsample.co.jp",
     "key": {
       "algo": "rsa",
       "size": 2048
            },
   "names": [
     {
      "C": "JP",
      "ST": "Tokyo",
      "L": "minato-ku",
      "O": "company-kabusikigaisha",
      "OU": "sushi-tabetai"
     }
   ]
}
CSR/秘密鍵作成
# cfssl genkey /root/cfssltest/json/test.json | cfssljson -bare cfssl-test
2022/12/05 15:58:44 [INFO] generate received request
2022/12/05 15:58:44 [INFO] received CSR
2022/12/05 15:58:44 [INFO] generating key: rsa-2048
2022/12/05 15:58:44 [INFO] encoded CSR

# ls -l /root | grep cfssl-test
-rw-------  1 root root      1679 12月  5 15:58 cfssl-test-key.pem
-rw-r--r--  1 root root      1054 12月  5 15:58 cfssl-test.csr
CSR内容確認
# openssl req --noout --text -in cfssl-test.csr
Certificate Request:
    Data:
        Version: 1 (0x0)
        Subject: C = JP, ST = Tokyo, L = minato-ku, O = company-kabusikigaisha, OU = sushi-tabetai, CN = hogehoge.exsample.co.jp
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                RSA Public-Key: (2048 bit)
                (略)

2.0 参考

公式README:https://github.com/cloudflare/cfssl/blob/master/README.md
CentOs8 Go言語のインストール:https://mebee.info/2019/10/24/post-2402/
SSL証明書発行ではcfsslを使おう(opensslめんどくさい):https://qiita.com/AkiQ/items/5489033346a12c55ff43

goソース取得元:https://go.dev/dl/

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