secp256k1 - npm Package Compare versions

Comparing version 3.2.0 to 3.2.2

API.md

@@ -120,2 +120,9 @@ # API Reference (v3.x)
 
+Inputs: 32-byte message m, 32-byte scalar key d, 32-byte scalar nonce k.
+
+* Compute point R = k * G. Reject nonce if R's x coordinate is zero.
+* Compute 32-byte scalar r, the serialization of R's x coordinate.
+* Compose 32-byte scalar s = k^-1 \* (r \* d + m). Reject nonce if s is zero.
+* The signature is (r, s).
+
 ######Option: `Function noncefn`
@@ -139,2 +146,9 @@
 
+Inputs: 32-byte message m, public key point Q, signature: (32-byte r, scalar s).
+
+* Signature is invalid if r is zero.
+* Signature is invalid if s is zero.
+* Compute point R = (s^-1 \* m \* G + s^-1 \* r \* Q). Reject if R is infinity.
+* Signature is valid if R's x coordinate equals to r.
+
 <hr>
@@ -141,0 +155,0 @@

lib/js/index.js

@@ -201,6 +201,7 @@ 'use strict'
 
-    var eNeg = BN.n.sub(BN.fromBuffer(message))
     var rInv = sigr.uinvm()
-    var point = ECPoint.fromECJPoint(g.mulAdd(eNeg, kp, sigs))
-    return point.mul(rInv).toPublicKey(compressed)
+    var s1 = BN.n.sub(BN.fromBuffer(message)).umul(rInv).ureduce()
+    var s2 = sigs.umul(rInv).ureduce()
+    var point = ECPoint.fromECJPoint(g.mulAdd(s1, kp, s2))
+    return point.toPublicKey(compressed)
   } while (false)
@@ -207,0 +208,0 @@

package.json

 {
   "name": "secp256k1",
-  "version": "3.2.0",
+  "version": "3.2.2",
   "description": "This module provides native bindings to ecdsa secp256k1 functions",
@@ -5,0 +5,0 @@ "keywords": [

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