[ietf-dkim] bh=; l=0;

[Stephen Farrell]

Michael Thomas wrote:
> Just the normal base 64 encoding of the 20 byte output of SHA1/SHA256 --
> nothing different than normal, eg l= > 0.
> 
>          Mike, not knowing what those values are offhand :)

According to some code of mine, sha256("") in hex is:

248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1

Anyone confirm that? (I've not checked what the code does, vs.
should do, with a null input.)

So we should have "l=0;bh=base64(that-hex-above)"

S.