I don't know why you're saying Elliptic Curve is not widely available, here is an Elliptic Curve Diffie-Hellman implementation guide from the NSA itself: http:/

I don't know why you're saying Elliptic Curve is not widely available, here is an Elliptic Curve Diffie-Hellman implementation guide from the NSA itself: http://www.nsa.gov/ia/_files/SuiteB_Implementer_G-113808.pdf http://www.nsa.gov/ia/_files/SuiteB_Implementer_G-113808.pdf Those patents are quite questionable anyway: https://en.wikipedia.org/wiki/ECC_patents https://en.wikipedia.org/wiki/ECC_patents