ウ 利用者に指定されたドメイン名を基にIPアドレスとドメイン名の対応付けを行い、利用者を目的のサーバにアクセスさせる。 DNS(Domain Name System)の説明
エ 利用者の公開鍵に対する公開鍵証明書の発行や失効を行い、鍵の正当性を保証する。 CA(Certificate Authority:認証局)の役割は、公開鍵証明書を発行し、その公開鍵が本物であることを保証することです。これにより、通信相手が正しい相手であることを確認できます。例えば、Webサイト(https)にアクセスするとき、CAが発行した証明書によって、そのWebサイトが本物であることが確認されます。また、証明書の失効管理もCAが行います。 The role of a CA (Certificate Authority) is to issue digital certificates and ensure that the public key is authentic. This allows users to verify that the communication partner is legitimate. For example, when accessing a website using HTTPS, the certificate issued by a CA confirms that the website is genuine. The CA also manages the revocation of certificates.
I am an explorer who ventures across the digital sea in search of gastronomic treasures. In the world of technology, I traverse the sea of keyboards in search of new discoveries. And in the real world, I visit every nook and cranny to find a delicious restaurant worth tantalizing your taste buds.
My mission is to add a little spice to your everyday life, starting with little IT tidbits and ending with foodie spots that fill your heart. I want to bring you topics that you can easily enjoy from the other side of the screen. Here, I'm going to share with you some of the technical tidbits and I will introduce small technical stories and food shops that will leave a lasting impression on your taste buds.
This Web site is truly a fusion point of digital and reality, combining the two worlds of IT and gourmet. I hope you will stop by and take a breather with new discoveries and dusty topics. Come explore the sea of knowledge and enjoy a journey of taste. I will bring you the information that will change your everyday life into something a little more special.