A (relatively easy to understand) primer on elliptic curve #cryptography http://arstechnica.com/security/2013/10/a-relatively-easy-to-understand-primer-on-elliptic-curve-cryptography/
Source
https://twitter.com/danielmcclure/status/655559534430150656
https://twitter.com/danielmcclure/status/655559534430150656