Beispiel #1
0
// 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
	//	}
}
Beispiel #2
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// Create a new Scalar for this curve.
func (c *curve) Scalar() abstract.Scalar {
	return nist.NewInt64(0, &c.order.V)
}
Beispiel #3
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	"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]
Beispiel #4
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// 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)
}