crypto: speed up trusted setup

MariusVanDerWijden · MariusVanDerWijden · commit 77000f32bd5c · 2025-03-11T14:34:17.000+01:00
diff --git a/crypto/kzg4844/kzg4844_ckzg_cgo.go b/crypto/kzg4844/kzg4844_ckzg_cgo.go
@@ -59,7 +59,9 @@ func ckzgInit() {
 	for i, g2 := range params.SetupG2 {
 		copy(g2s[i*(len(g2)-2)/2:], hexutil.MustDecode(g2))
 	}
-	if err = ckzg4844.LoadTrustedSetup(g1s, g1Lag, g2s, 0); err != nil {
+	// The last parameter determines the multiplication table, see https://notes.ethereum.org/@jtraglia/windowed_multiplications
+	// I think 6 is an decent compromise between size and speed
+	if err = ckzg4844.LoadTrustedSetup(g1s, g1Lag, g2s, 6); err != nil {
 		panic(err)
 	}
 }

Original file line number	Diff line number	Diff line change
`@@ -59,7 +59,9 @@ func ckzgInit() {`
`59`	`59`	`for i, g2 := range params.SetupG2 {`
`60`	`60`	`copy(g2s[i*(len(g2)-2)/2:], hexutil.MustDecode(g2))`
`61`	`61`	`}`
`62`		`- if err = ckzg4844.LoadTrustedSetup(g1s, g1Lag, g2s, 0); err != nil {`
	`62`	`+ // The last parameter determines the multiplication table, see https://notes.ethereum.org/@jtraglia/windowed_multiplications`
	`63`	`+ // I think 6 is an decent compromise between size and speed`
	`64`	`+ if err = ckzg4844.LoadTrustedSetup(g1s, g1Lag, g2s, 6); err != nil {`
`63`	`65`	`panic(err)`
`64`	`66`	`}`
`65`	`67`	`}`