With PGP Key Generator, your visitors can generate their own private and public PGP keys. It is also possible to use the plugin to encrypt and unencrypt a PGP message. Check https://wp2pgpmail.com for more info. Is it secure ? All code is implememented in readable Javascript. You can verify the source code. No binaries are loaded from a server or used embedded. No hidden transfer of plain text. This plugin is based on the tool developed by Ian Purton.