No they are not
AES-128 has a 16 byte block size, stream ciphers can encrypt byte by byte. A SMS holds 160 characters
10 publicly visible posts • joined 19 May 2011
How is there greater privacy, the TTP (trusted 3rd party) still must know every site you visit; No privacy gained what so ever.
if they really wanted privacy, then there would be in a encrypted payload held by the client. the key is that only the TTP could create the payload but would distribute it to the client at a earlier date where the payload is not site specific just verifies the client.
also to the comments "anyone who sits down in front of your system can log in as 'you'" , unless you anally lock your screen and and sign out over every website after visiting NO protection is lost.