[Request] Enable users to add PGP public keys to their profiles so we can encrypt outgoing emails.

[EkoNesLeg]

Allow users to add their public encryption keys to their account profiles. With this option, all outgoing emails from the site to the user will be encrypted using the provided PGP key.

Implementation:

1. User Interface: Introduce a new section in the user account settings for "Email Encryption." Here, users can input their PGP public key in a designated text area.
2. Verification: After a user submits their PGP public key, send a test email encrypted with the provided key. The user must confirm receipt and decryption of this email to verify the key's validity.
3. Email Encryption: Modify the email sending function to automatically encrypt all outgoing emails using the user's stored PGP public key. If a user has not provided a PGP key, emails will be sent unencrypted, like it is now.

See also:
laravel-pgp

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