4 ms·> Crypto is short for one thing and it's cryptography. Says who?by dominotw 9y ago> Crypto is short for one thing and it's cryptography. Says who?jbarham 9y agoDJB: http://cr.yp.to/ http://cr.yp.to/dominotw 9y agoDJB is not an authority on abbreviations. They are decided colloquially.