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37 lines
1.1 KiB
Bash
Executable file
37 lines
1.1 KiB
Bash
Executable file
#!/bin/sh
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#
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# See uefisign(8) manual page for usage instructions.
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#
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#
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die() {
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echo "$*" > /dev/stderr
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exit 1
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}
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if [ $# -ne 1 ]; then
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echo "usage: $0 common-name"
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exit 1
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fi
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certfile="${1}.pem"
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efifile="${1}.cer"
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keyfile="${1}.key"
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# XXX: Set this to ten years; we don't want system to suddenly stop booting
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# due to certificate expiration. Better way would be to use Authenticode
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# Timestamp. That said, the rumor is UEFI implementations ignore it anyway.
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days="3650"
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subj="/CN=${1}"
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[ ! -e "${certfile}" ] || die "${certfile} already exists"
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[ ! -e "${efifile}" ] || die "${efifile} already exists"
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[ ! -e "${keyfile}" ] || die "${keyfile} already exists"
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umask 077 || die "umask 077 failed"
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openssl genrsa -out "${keyfile}" 2048 2> /dev/null || die "openssl genrsa failed"
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openssl req -new -x509 -sha256 -days "${days}" -subj "${subj}" -key "${keyfile}" -out "${certfile}" || die "openssl req failed"
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openssl x509 -inform PEM -outform DER -in "${certfile}" -out "${efifile}" || die "openssl x509 failed"
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echo "certificate: ${certfile}; private key: ${keyfile}; certificate to enroll in UEFI: ${efifile}"
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