Illustrated X.509 Certificate


1. Digital Signature (Prior Knowledge)

2. Certificate Chain

3. Certificate Structure

3.1. Subject

3.2. Subject Alternative Name

4. Self-Signed Certificate

4.1. openssl Command

4.2. Private Key Generation

4.3. Private Key Content

4.4. Certificate Generation

4.5. Certificate Content




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Takahiko Kawasaki

Co-founder and representative director of Authlete, Inc., working as a software engineer since 1997.