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AbhyudayaSharma/gen-csr.md

Last active June 3, 2022 07:32
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Generate a certificate signing request in one line
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gen-csr.md

Generate a CSR using OpenSSL

openssl req -new -newkey rsa:4096 -keyout key.pem -noenc -out csr.pem -sha512 \
  -addext 'subjectAltName = DNS:foo.example.com, DNS:bar.example.com, IP:192.0.2.35' \
  -subj '/C=IN/ST=State/L=Location/O=Organization/OU=OrgUnit/CN=foo.example.com/emailAddress=foo@example.com'

This creates a new RSA4096 key in key.pem and the corresponding CSR in csr.pem. The CSR can then be verified:

openssl req -in csr.pem -noout -text
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