X.509
Forbes McConnel
Created on September 21, 2024
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Transcript
X.509
- Runs on chain of trust
- Certificate authority -> Intermediate certificate authority -> Entity
- Defines structure of online certificate
- The certificate proves the authenticity of a file or user.
What is it used for
- Certificates are issued by a trusted third party
- Certificate authorities
How are certificates issued
- The keys
- The public key critical for encryption
- Validity
- The time period for which the certificate is valid
- The Subject
- The entity E.g. the website or Individual
- The issuer
- The certificate authority
What data does a certificate contain
- It critical for encryption
- It ensures data is kept safe
- It is the median for encryption over the internet .
- It is used to prove the safety of a website (the pad lock symbol)
- A certificate is need to use the https domain.
Why do we need it?
- Development began in early 1980s along with the development of public key infrastructure.
- It became needed when the internet began to grow in the 1990s, when it was adopted as the formal standard.
- It is still used a lot today in many cases.
A brief history