OpenSSL

I’ve heard of https://nostr.com for about a year, but not until recently have I experimenting with it. This post consists of my rough notes as I progressed to sending a nostr message. If you are interested in a bare minimum way to post events to nostr, read on. Generate a new private key $ openssl ecparam -name secp256k1 -genkey -out ec-priv.pem The output here as the file extension notes is PEM:

If you ever want to quickly check the expiration date on your HTTPS server’s SSL certificate all you need is OpenSSL , luckily most of your Linux and OSX workstations will already have it installed. openssl s_client -showcerts -connect **domain.com**:443 </dev/null 2>/dev/null \ | openssl x509 -noout -dates You should get back a nice and tidy response with a notBefore and a notAfter date: notBefore=Mar 13 00:00:00 2015 GMT notAfter=Mar 12 23:59:59 2018 GMT