This release will create a more secure storing of secrets. It requires a unique key that is part of the URL in order to unlock the secret. From the README:
You enter https://hemmelig.app, write your sensitive information, expire time, optional password, and click create a secret link. You share the secret link. The receiver of the link opens it, writes the optional password, and retrieves the sensitive information. When a secret link is created, it gets its unique encryption key that is not saved to the database and only will be part of the URL. This means NO ONE can decrypt your secret without the hash(SECRET_MASTER_KEY + YOUR_UNIQUE_ENCRYPTION_KEY), and access to the Redis instance.