// Create a new Scalar for the Ed25519 curve.
func (c *Curve) Scalar() abstract.Scalar {
// if c.FullGroup {
// return nist.NewInt(0, fullOrder)
// } else {
i := nist.NewInt64(0, &primeOrder.V)
i.BO = nist.LittleEndian
return i
// }
}
// Create a new Scalar for this curve.
func (c *curve) Scalar() abstract.Scalar {
return nist.NewInt64(0, &c.order.V)
}
"crypto/sha256"
"encoding/hex"
"math/big"
"github.com/dedis/crypto/abstract"
"github.com/dedis/crypto/group"
"github.com/dedis/crypto/nist"
"github.com/dedis/crypto/random"
"github.com/dedis/crypto/sha3"
)
// prime order of base point = 2^252 + 27742317777372353535851937790883648493
var primeOrder, _ = new(nist.Int).SetString("7237005577332262213973186563042994240857116359379907606001950938285454250989", "", 10)
// curve's cofactor
var cofactor = nist.NewInt64(8, &primeOrder.V)
var nullPoint = new(point).Null()
type point struct {
p C.ge_p3
}
type curve struct {
}
// Convert little-endian byte slice to hex string
func tohex(s []byte) string {
b := make([]byte, len(s))
for i := range b { // byte-swap to big-endian for display
b[i] = s[31-i]
// Create a new ModInt representing a coordinate on this curve,
// with a given int64 integer value for constant-initialization convenience.
func (P *basicPoint) coord(v int64) *nist.Int {
return nist.NewInt64(v, &P.c.P)
}