OpenSSL RSAとECDSA(ECC)の鍵ペア生成速度比較
Key pair generation speed comparison between RSA and ECDSA (ECC).
OpenSSL 
NIST NIST SP 800-57 Part 1とは
NIST SP 800-57 Part 1鍵管理に関する推奨事項
S/MIME Certificate S/MIME Baseline Requirementsが2023/09/01に発効
S/MIME Baseline Requirements to take effect September 1, 2023.
Web Browser GoogleがFirefoxを支援する理由
Why Google supports Firefox.
Smartphone/Device AirTagを購入し試してみた
I bought an AirTag and tried it.
S/MIME Certificate S/MIME証明書の有効期間が1185日以下に（2022/04/01以降）
S/MIME certificates have not a validity period greater than 1185 days.
Linux よく使うLinuxコマンド・サンプル
Frequently used Linux commands.
法律 ローマ字表記方法
Romanization method.
法律 ローマ字表記での姓名の順番
Last name/first name order in romanized form.