[jonajon]

We're working on Syme (www.getsyme.com), an encrypted social network for groups.

We've leveraged the latest HTML5 APIs and combined them with crypto primitives like ECC 384 (for message confidentiality), ECDSA (for message authentication), AES 256 in CCM mode (for message integrity), PAK-DH and ECDH-HMAC (for secure key exchanges), and PBKDF2 and SRP (for user authentication and credential generation).

The technical challenge for Syme is to create a decentralized public-key infrastructure with no single point of trust, so that no central server or trusted third party is required to establish trust between users.