https://github.com/openpgpjs/openpgpjs/blob/8a278662252cefd21cb41cd1d76f32feabbf9b6b/src/message.js#L147 https://github.com/openpgpjs/openpgpjs/blob/8a278662252

https://github.com/openpgpjs/openpgpjs/blob/8a278662252cefd21cb41cd1d76f32feabbf9b6b/src/message.js#L147 https://github.com/openpgpjs/openpgpjs/blob/8a278662252cefd2... Basically - generate a session key, encrypt the session key with for each recipient, at the end add the text of message encrypted with the session key.