openssl-tls
OpenSSL & TLS
Certificates, TLS debugging, and encryption from the command line.
Generate Self-Signed Certificate
Quick (Dev/Local)
# One-liner: key + cert, valid 365 days
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes \
-subj "/CN=localhost"
# With SANs (needed for Chrome to accept it)
openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes \
-subj "/CN=localhost" \
-addext "subjectAltName=DNS:localhost,IP:127.0.0.1"
# EC key instead of RSA
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