Unlimited SpiderOak referrals.
SpiderOak is pretty much dropbox but with actual secure sharing. Not even their staff can instantly see what's in it.
SpiderOak uses a layered approach to encryption, using a combination of 2048 bit RSA and 256 bit AES.
Most importantly, however, the outer level keys are never stored plaintext on the SpiderOak server. They are encrypted with 256 bit AES, using a key created by the key derivation/strengthening algorithm PBKDF2 (using sha256), with 16384 rounds, and 32 bytes of random data ("salt"). This approach prevents brute force and pre-computation or database attacks against the key. This means that a user who knows her password, can generate the outer level encryption key using PBKDF2 and the salt, then decipher the outer level keys, and be on the way to decrypting her data. Without knowledge of the password, however, the data is quite unreadable.
2 GB + 1GB storage from the referral.
***LIMITED TIME OFFER*** Start out with 7GB instead of 2, this works for current free acounts with 5GB storage or lower aswell, PM me for the code aslong as it lasts.
Just PM me for an Invite.