Support setAutoPadding()?

[jprichardson]

See bitcoinjs/bip38#6 for reference.

[calvinmetcalf]

yeah I can implement that, in the mean time instead of

cipher.end(xorBuf)

var cipherText = cipher.read()

you can do

var cipherText = cipher.update(xorBuf)

[dcousens]

update only returns if an entire block is waiting?

This isn't always the case in that implementation.

[calvinmetcalf]

this line is only ever called with n even block size so it is equivalent, but that wouldn't work for decrypting because it keeps one in reserve for padding, but this is actually fixed here just needs to be merged upstream browserify/crypto-browserify#92