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Creating Self Signed SSL Server Certificate with NSS
Endi S. Dewata edited this page Dec 6, 2022
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To generate a certificate with RSA key:
$ openssl rand -out noise.bin 2048 $ echo -e "y\n\ny\n" | \ certutil -S \ -x \ -d nssdb \ -f password.txt \ -z noise.bin \ -n sslserver \ -s "CN=$HOSTNAME" \ -t "CT,C,C" \ -m $RANDOM \ -k rsa \ -g 2048 \ -2 \ --keyUsage dataEncipherment,digitalSignature,keyEncipherment \ --nsCertType sslServer \ --extKeyUsage serverAuth,clientAuth $ certutil -L -d nssdb -n "sslserver" -a > sslserver.crt
To generate a certificate with ECC key:
$ openssl rand -out noise.bin 2048 $ echo -e "y\n\ny\n" | \ certutil -S \ -x \ -d nssdb \ -f password.txt \ -z noise.bin \ -n sslserver \ -s "CN=$HOSTNAME" \ -t "CT,C,C" \ -m $RANDOM \ -k ec \ -q nistp256 \ -2 \ --keyUsage dataEncipherment,digitalSignature,keyEncipherment \ --nsCertType sslServer \ --extKeyUsage serverAuth,clientAuth $ certutil -L -d nssdb -n "sslserver" -a > sslserver.crt
$ openssl rand -out noise.bin 2048 $ certutil -S \ -x \ -d nssdb \ -f password.txt \ -z noise.bin \ -n "DS Certificate" \ -s "CN=$HOSTNAME" \ -t "CT,C,C" \ -m $RANDOM \ -k rsa \ -g 2048 \ -Z SHA256 \ --keyUsage certSigning,keyEncipherment
Generate a CSR with the following commands:
$ openssl rand -out noise.bin 2048 $ echo -e "y\n\ny\n" | \ certutil -R \ -d nssdb \ -f password.txt \ -z noise.bin \ -s "CN=$HOSTNAME" \ -o sslserver.csr.der \ -k rsa \ -g 2048 \ -Z SHA256 \ -2 \ --keyUsage dataEncipherment,digitalSignature,keyEncipherment \ --nsCertType sslServer \ --extKeyUsage serverAuth,clientAuth $ openssl req -inform der -in sslserver.csr.der -out sslserver.csr
It will generate the CSR in sslserver.csr.
Sign the CSR with the following commands:
$ echo -e "y\n\ny\n" | \ certutil -C \ -x \ -d nssdb \ -f password.txt \ -m $RANDOM \ -a \ -i sslserver.csr \ -o sslserver.crt \ -2 \ --keyUsage dataEncipherment,digitalSignature,keyEncipherment \ --nsCertType sslServer \ --extKeyUsage serverAuth,clientAuth $ certutil -A -d nssdb -n "sslserver" -i sslserver.crt -t "CT,CT,CT"
It will generate the SSL server certificate in sslserver.crt.
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