bitcore-lib-cash - npm Package Compare versions

Comparing version 8.14.4 to 8.15.0

index.js

@@ -22,2 +22,3 @@ 'use strict';
 bitcore.crypto.ECDSA = require('./lib/crypto/ecdsa');
+bitcore.crypto.Schnorr = require('./lib/crypto/schnorr');
 bitcore.crypto.Hash = require('./lib/crypto/hash');
@@ -24,0 +25,0 @@ bitcore.crypto.Random = require('./lib/crypto/random');

lib/crypto/point.js

@@ -152,2 +152,16 @@ 'use strict';
 
+// todo: needs test case
+Point.prototype.hasSquare = function() {
+  return !this.isInfinity() && this.isSquare(this.getY());
+}
+
+// todo: needs test cases
+Point.prototype.isSquare = function(x) {
+  let p = new BN('FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F', 'hex');
+  let x0 = new BN(x);
+  let base = x0.toRed(BN.red(p));
+  let res = base.redPow(p.sub(BN.One).div(new BN(2))).fromRed(); //refactor to BN arithmetic operations
+  return res.eq(new BN(1));
+}
+
 module.exports = Point;

lib/crypto/signature.js

@@ -9,5 +9,5 @@ 'use strict';
 
-var Signature = function Signature(r, s) {
+var Signature = function Signature(r, s, isSchnorr) {
   if (!(this instanceof Signature)) {
-    return new Signature(r, s);
+    return new Signature(r, s, isSchnorr);
   }
@@ -17,3 +17,4 @@ if (r instanceof BN) {
       r: r,
-      s: s
+      s: s,
+      isSchnorr: isSchnorr,
     });
@@ -33,3 +34,4 @@ } else if (r) {
   this.compressed = typeof obj.compressed !== 'undefined' ?
-    obj.compressed : this.compressed; //whether the recovered pubkey is compressed
+    obj.compressed : this.compressed; // whether the recovered pubkey is compressed
+  this.isSchnorr = obj.isSchnorr;
   this.nhashtype = obj.nhashtype || this.nhashtype || undefined;
@@ -67,2 +69,12 @@ return this;
 Signature.fromDER = Signature.fromBuffer = function(buf, strict) {
+  // Schnorr Signatures use 64/65 byte for in tx r [len] 32 , s [len] 32, nhashtype 
+  if((buf.length === 64 || buf.length === 65)) {
+    let obj = Signature.parseSchnorrEncodedSig(buf);
+    let sig = new Signature();
+    sig.r = obj.r;
+    sig.s = obj.s;
+    sig.isSchnorr = true;
+    return sig;
+  }
+
   var obj = Signature.parseDER(buf, strict);
@@ -97,2 +109,3 @@ var sig = new Signature();
   var buf = Buffer.from(str, 'hex');
+  
   return Signature.fromDER(buf);
@@ -102,2 +115,19 @@ };
 
+Signature.parseSchnorrEncodedSig = function(buf) {
+  let r = buf.slice(0,32);
+  let s = buf.slice(32, 64);
+  let hashtype;
+  if (buf.length === 65) {
+    hashtype = buf.slice(64,66);
+    this.hashtype = hashtype;
+  }
+
+  var obj = {
+    r: BN.fromBuffer(r),
+    s: BN.fromBuffer(s)
+  };
+
+  return obj;
+};
+
 /**
@@ -187,2 +217,6 @@ * In order to mimic the non-strict DER encoding of OpenSSL, set strict = false.
 
+  if(this.isSchnorr) {
+    return Buffer.concat([rnbuf, snbuf]);
+  }
+  
   var rneg = rnbuf[0] & 0x80 ? true : false;
@@ -189,0 +223,0 @@ var sneg = snbuf[0] & 0x80 ? true : false;

lib/transaction/sighash.js

@@ -13,2 +13,3 @@ 'use strict';
 var ECDSA = require('../crypto/ecdsa');
+var Schnorr = require('../crypto/schnorr');
 var $ = require('../util/preconditions');
@@ -163,3 +164,3 @@ var BufferUtil = require('../util/buffer');
   var Input = require('./input');
-
+  
   if (_.isUndefined(flags)){
@@ -230,3 +231,3 @@ flags = DEFAULT_SIGN_FLAGS;
   }
-
+  
   if (sighashType & Signature.SIGHASH_ANYONECANPAY) {
@@ -255,8 +256,16 @@ txcopy.inputs = [txcopy.inputs[inputNumber]];
  * @param {satoshisBN} input's amount
+ * @param {signingMethod} signingMethod "ecdsa" or "schnorr" to sign a tx
  * @return {Signature}
  */
-function sign(transaction, privateKey, sighashType, inputIndex, subscript, satoshisBN, flags) {
+function sign(transaction, privateKey, sighashType, inputIndex, subscript, satoshisBN, flags, signingMethod) {
   var hashbuf = sighash(transaction, sighashType, inputIndex, subscript, satoshisBN, flags);
 
+  signingMethod = signingMethod || "ecdsa";
 
+  if (signingMethod === "schnorr") {
+    let sig = Schnorr.sign(hashbuf, privateKey, 'big').set({
+      nhashtype: sighashType
+    });
+    return sig;
+  }
 
@@ -266,2 +275,3 @@ var sig = ECDSA.sign(hashbuf, privateKey, 'little').set({
   });
+
   return sig;
@@ -281,8 +291,16 @@ }
  * @param {flags} verification flags
+ * @param {signingMethod} signingMethod "ecdsa" or "schnorr" to sign a tx
  * @return {boolean}
  */
-function verify(transaction, signature, publicKey, inputIndex, subscript, satoshisBN, flags) {
+function verify(transaction, signature, publicKey, inputIndex, subscript, satoshisBN, flags, signingMethod) {
   $.checkArgument(!_.isUndefined(transaction));
   $.checkArgument(!_.isUndefined(signature) && !_.isUndefined(signature.nhashtype));
   var hashbuf = sighash(transaction, signature.nhashtype, inputIndex, subscript, satoshisBN, flags);
+
+  signingMethod = signingMethod || "ecdsa";
+
+  if (signingMethod === "schnorr") {
+    return Schnorr.verify(hashbuf, signature, publicKey, 'big');
+  }
+
   return ECDSA.verify(hashbuf, signature, publicKey, 'little');
@@ -289,0 +307,0 @@ }

package.json

 {
   "name": "bitcore-lib-cash",
-  "version": "8.14.4",
+  "version": "8.15.0",
   "description": "A pure and powerful JavaScript Bitcoin Cash library.",
@@ -39,3 +39,3 @@ "author": "BitPay <[e-mail]>",
   "dependencies": {
-    "bitcore-lib": "^8.14.4",
+    "bitcore-lib": "^8.15.0",
     "bn.js": "=4.11.8",
@@ -50,3 +50,3 @@ "bs58": "^4.0.1",
     "base-x": "=3.0.4",
-    "bitcore-build": "^8.14.4",
+    "bitcore-build": "^8.15.0",
     "brfs": "^2.0.1",
@@ -53,0 +53,0 @@ "chai": "^4.2.0",

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Improved metrics

Total package byte prevSize

2465421

increased by0.64%

Number of package files

146

increased by1.39%

Lines of code

31572

increased by1.11%

Dependency changes

• Updatedbitcore-lib@^8.15.0