Is F-Secure able to
decrypt my KEY data and hand it over to a third party?
No, we have no way of decrypting any information that you have saved in F-Secure KEY. In addition, anyone using F-Secure KEY is anonymous to F-Secure, so we have no way of identifying an individual user's data. We never see any of your information at any stage, and therefore we can't decrypt it or hand it over to a third party.
With F-Secure KEY, we use the Advanced Encryption Standard (AES) using the 256-bit block cipher. Alongside AES-256, we use a block cipher mode of operation called CCM mode (Counter with CBC-MAC). This is an authenticated encryption algorithm providing both authentication and confidentiality.
Both the choice of encryption and anonymity of users were conscious decisions made to improve the security of the product and protect the privacy of our customers.