Merge pull request #161 from viaNull/fix/check_nPoints

OBrezhniev · web-flow · commit 2676e99ee2f3 · 2024-10-07T17:13:18.000+01:00
Update engine_multiexp.js , check if nPoints == 0
diff --git a/src/engine_multiexp.js b/src/engine_multiexp.js
@@ -110,6 +110,7 @@ export default function buildMultiexp(curve, groupName) {
         }
 
         const nPoints = Math.floor(buffBases.byteLength / sGIn);
+        if (nPoints == 0) return G.zero;
         const sScalar = Math.floor(buffScalars.byteLength / nPoints);
         if( sScalar * nPoints != buffScalars.byteLength) {
             throw new Error("Scalar size does not match");

Original file line number	Diff line number	Diff line change
`@@ -110,6 +110,7 @@ export default function buildMultiexp(curve, groupName) {`
`110`	`110`	`}`
`111`	`111`
`112`	`112`	`const nPoints = Math.floor(buffBases.byteLength / sGIn);`
	`113`	`+ if (nPoints == 0) return G.zero;`
`113`	`114`	`const sScalar = Math.floor(buffScalars.byteLength / nPoints);`
`114`	`115`	`if( sScalar * nPoints != buffScalars.byteLength) {`
`115`	`116`	`throw new Error("Scalar size does not match");`