6.6.0

dist/elliptic.js

@@ -2252,8 +2252,27 @@ EC.prototype.genKeyPair = function genKeyPair(options) {
   }
 };
 
-EC.prototype._truncateToN = function _truncateToN(msg, truncOnly) {
-  var delta = msg.byteLength() * 8 - this.n.bitLength();
+EC.prototype._truncateToN = function _truncateToN(msg, truncOnly, bitLength) {
+  var byteLength;
+  if (BN.isBN(msg) || typeof msg === 'number') {
+    msg = new BN(msg, 16);
+    byteLength = msg.byteLength();
+  } else if (typeof msg === 'object') {
+    // BN assumes an array-like input and asserts length
+    byteLength = msg.length;
+    msg = new BN(msg, 16);
+  } else {
+    // BN converts the value to string
+    var str = msg.toString();
+    // HEX encoding
+    byteLength = (str.length + 1) >>> 1;
+    msg = new BN(str, 16);
+  }
+  // Allow overriding
+  if (typeof bitLength !== 'number') {
+    bitLength = byteLength * 8;
+  }
+  var delta = bitLength - this.n.bitLength();
   if (delta > 0)
     msg = msg.ushrn(delta);
   if (!truncOnly && msg.cmp(this.n) >= 0)
@@ -2271,7 +2290,7 @@ EC.prototype.sign = function sign(msg, key, enc, options) {
     options = {};
 
   key = this.keyFromPrivate(key, enc);
-  msg = this._truncateToN(new BN(msg, 16));
+  msg = this._truncateToN(msg, false, options.msgBitLength);
 
   // Zero-extend key to provide enough entropy
   var bytes = this.n.byteLength();
@@ -2327,8 +2346,11 @@ EC.prototype.sign = function sign(msg, key, enc, options) {
   }
 };
 
-EC.prototype.verify = function verify(msg, signature, key, enc) {
-  msg = this._truncateToN(new BN(msg, 16));
+EC.prototype.verify = function verify(msg, signature, key, enc, options) {
+  if (!options)
+    options = {};
+
+  msg = this._truncateToN(msg, false, options.msgBitLength);
   key = this.keyFromPublic(key, enc);
   signature = new Signature(signature, 'hex');
 
@@ -2530,8 +2552,8 @@ KeyPair.prototype.sign = function sign(msg, enc, options) {
   return this.ec.sign(msg, this, enc, options);
 };
 
-KeyPair.prototype.verify = function verify(msg, signature) {
-  return this.ec.verify(msg, signature, this);
+KeyPair.prototype.verify = function verify(msg, signature, options) {
+  return this.ec.verify(msg, signature, this, undefined, options);
 };
 
 KeyPair.prototype.inspect = function inspect() {
@@ -8867,7 +8889,7 @@ utils.encode = function encode(arr, enc) {
 },{}],35:[function(require,module,exports){
 module.exports={
   "name": "elliptic",
-  "version": "6.5.7",
+  "version": "6.6.0",
   "description": "EC cryptography",
   "main": "lib/elliptic.js",
   "files": [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "elliptic",
-  "version": "6.5.7",
+  "version": "6.6.0",
   "description": "EC cryptography",
   "main": "lib/elliptic.js",
   "files": [