blob: 84e7db428e68ebbc2385561b2960f7d62bee49aa (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
package nizk
import (
"crypto/sha512"
"kesim.org/seal/curve"
)
// Common functions for the various proofs
type Scalar = curve.Curve25519Scalar
type Point = curve.Curve25519Point
var Curve = curve.Curve25519
var G = Curve.Generator()
var One = Curve.ScalarOne()
func Challenge(points ...*Point) *Scalar {
h512 := sha512.New()
for _, p := range points {
h512.Write(p.Bytes())
}
ch, e := Curve.ScalarFromBytes(h512.Sum(nil))
if e != nil {
panic(e)
}
return ch
}
|
