openssl ecparam -name secp256k1 -genkey -noout -out private.pem
openssl ec -in private.pem -out public.pem -pubout 

var privateKeyPEM = '-----BEGIN RSA PRIVATE KEY--....Q=-----END RSA PRIVATE KEY-----';
var publicKeyPEM = '-----BEGIN PUBLIC KEY-----MI...AB-----END PUBLIC KEY-----';
var publicKey = forge.pki.publicKeyFromPem(publicKeyPEM);
var privateKey = forge.pki.privateKeyFromPem(privateKeyPEM);
 
var encryptedText = publicKey.encrypt('password');
console.log(encryptedText);
var decryptedText = privateKey.decrypt(encryptedText);
console.log(decryptedText);