I would like to understand if this service is as safe and good as it claims to be: https://unseen.is
This is what they say:
... Many other services that offer encryption keep the key, but getting a copy of the key from the service is the easiet way to break in to your messages. With Unseen, you control the key, so it's not possible for us to read any of your messages.
Keep in mind, with enough time and advanced technology, anything can be broken. ... We only provide extremely strong encryption, even if you use the free version of our service. Our mission is to protect your communications with the best technology we have available and we felt strongly that we should give that to everyone.
Ever since a former security contractor told us "if it's publicly available, it's cracked" several years ago, we've assumed that backdoors and weakeners have been included in the public encryption libraries. We know you wanted more and set out a year ago to deliver the next generation in encryption technology.
We decided to completely replace the standard AES encryption we started with for all free AND premium users with something much stronger. This new encryption is running now on the site, providing all levels of service with a much upgraded and extremely strong but not widely available encryption. In the running for the AES standard, our encryption runs a healthy 4096 bits, much, much stronger than off the shelf AES.
We've use only super strong NTRU encryption for public key exchange that is believed to be resistant to even quantum computing attacks. Not only is it much stronger than RSA used by many of our competitors, but key generation is now fast enough that YOU GENERATE YOUR OWN KEYS. Other services generate keys in batches, then send you your key using SSL security, which can put your key's security in peril if it's intercepted.
We haven't added a "backdoor" like you will find in most public encryption libraries. These lesser known algorithms were never chosen as standards, so they should be more difficult to break into because they never had "contributions" from spies who intentionally weakened the code.
While no encryption or security is perfect, rest assured that Unseen provides some of the best available. ...
So, if I use this service am I secured and is my privacy unbreakable?