2023-11-30 18:23:43 +01:00
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#!/usr/bin/env bash
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2023-09-21 16:05:17 +02:00
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set -o errexit
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set -o nounset
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set -o pipefail
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2023-11-30 18:23:43 +01:00
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cat <<EOF >openssl.cnf
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2023-09-21 16:05:17 +02:00
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[req]
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req_extensions = v3_req
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distinguished_name = req_distinguished_name
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[req_distinguished_name]
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[v3_req]
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keyUsage = nonRepudiation, digitalSignature, keyEncipherment
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extendedKeyUsage = serverAuth
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subjectAltName = @alt_names
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[alt_names]
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DNS.1 = *.home
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DNS.2 = tammena.me
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DNS.3 = *.tammena.me
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EOF
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# Generate private key for the CA
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openssl ecparam -name prime256v1 -genkey -out ca.key
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# Generate CA certificate
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openssl req -new -x509 -sha256 -key ca.key -out ca.crt -subj "/CN=My Home CA" -days 36500
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# Generate private key for certificate
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openssl ecparam -name prime256v1 -genkey -out server.key
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# Generate certificate signing request (CSR) for server certificate
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openssl req -new -sha256 -key server.key -out server.csr -subj "/CN=*.home"
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# Generate server certificate using CA
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openssl x509 -req -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt -days 365 -sha256 -extfile openssl.cnf -extensions v3_req
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# Verify certificate
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openssl verify -CAfile ca.crt server.crt
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# Clean Up
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2023-11-30 18:23:43 +01:00
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rm openssl.cnf server.csr
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