On Dec 14, 2013, at 9:56 PM, Peter Gutmann <[email protected]> wrote:
> Bill Stewart <[email protected]> writes: > >> Saw an interesting article from Gmail on their inbound email statistics. Over >> 91% is authenticated with either DKIM or SPF. > > What percentage of that is using 512-bit keys? Zero. DKIM requires at least a 1024-bit key. Whatever you might want to say about those is a different discussion. SPF is non-cryptographic authentication. Jon
