1 // Copyright 2012 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Package curve25519 provides an implementation of scalar multiplication on 6 // the elliptic curve known as curve25519. See https://cr.yp.to/ecdh.html 7 package curve25519 // import "golang.org/x/crypto/curve25519" 8 9 // basePoint is the x coordinate of the generator of the curve. 10 var basePoint = [32]byte{9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} 11 12 // ScalarMult sets dst to the product in*base where dst and base are the x 13 // coordinates of group points and all values are in little-endian form. 14 func ScalarMult(dst, in, base *[32]byte) { 15 scalarMult(dst, in, base) 16 } 17 18 // ScalarBaseMult sets dst to the product in*base where dst and base are the x 19 // coordinates of group points, base is the standard generator and all values 20 // are in little-endian form. 21 func ScalarBaseMult(dst, in *[32]byte) { 22 ScalarMult(dst, in, &basePoint) 23 } 24