Rename gost3410.Curve Bx/By parameters to X/Y for simplicity

diff --git a/src/cypherpunks.ru/gogost/gost3410/curve.go b/src/cypherpunks.ru/gogost/gost3410/curve.go
index a8efdcca49a66c556e97f73b7b5a6a2965ca20be..623ee6876dfebe4ece15ee1a4a858b650838758f 100644 (file)
--- a/src/cypherpunks.ru/gogost/gost3410/curve.go
+++ b/src/cypherpunks.ru/gogost/gost3410/curve.go
@@ -29,14 +29,16 @@ var (
 )
 
 type Curve struct {
-       P *big.Int
-       Q *big.Int
+       P *big.Int // Characteristic of the underlying prime field
+       Q *big.Int // Elliptic curve subgroup order
+
+       // Equation coefficients of the elliptic curve in canonical form
        A *big.Int
        B *big.Int
 
        // Basic point X and Y coordinates
-       Bx *big.Int
-       By *big.Int
+       X *big.Int
+       Y *big.Int
 
        // Temporary variable for the add method
        t  *big.Int
@@ -58,11 +60,11 @@ func NewCurve(p, q, a, b, bx, by []byte) (*Curve, error) {
        }
        r1 := big.NewInt(0)
        r2 := big.NewInt(0)
-       r1.Mul(c.By, c.By)
+       r1.Mul(c.Y, c.Y)
        r1.Mod(r1, c.P)
-       r2.Mul(c.Bx, c.Bx)
+       r2.Mul(c.X, c.X)
        r2.Add(r2, c.A)
-       r2.Mul(r2, c.Bx)
+       r2.Mul(r2, c.X)
        r2.Add(r2, c.B)
        r2.Mod(r2, c.P)
        if r2.Cmp(big.NewInt(0)) == -1 {