I'm assuming folks have looked at using:

http://code.google.com/p/stringencoders/

Pretty simple API:

char buf[100]; char result[10]; char endian[] = {(char)0, (char)0, (char)1}; int d = modp_b64_encode(buf, endian, 3);

And very fast:

http://code.google.com/p/stringencoders/#Why

With some neat, very platform specific tricks:

http://code.google.com/p/stringencoders/#How_It_Works

Don't get me wrong, I'd definitely like to see Boost have something because that extreme of performance isn't always necessary, but FYI for those interested in the discussion. -sc -- Sean Chittenden sean@chittenden.org