Added support for alt_bn128 curve.

README.md

@@ -188,6 +188,7 @@ Following curve 'presets' are embedded into the library:
 * `p521`
 * `curve25519`
 * `ed25519`
+* `alt_bn128`
 
 NOTE: That `curve25519` could not be used for ECDSA, use `ed25519` instead.
 

lib/elliptic/curves.js

@@ -204,3 +204,18 @@ defineCurve('secp256k1', {
     pre,
   ],
 });
+
+defineCurve('alt_bn128', {
+  type: 'short',
+  prime: null,
+  p: '30644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd47',
+  a: '0',
+  b: '3',
+  n: '30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001',
+  hash: hash.sha256,
+  gRed: false,
+  g: [
+    '1',
+    '2',
+  ],
+});

test/ecdh-test.js

@@ -26,6 +26,7 @@ describe('ECDH', function() {
   test('curve25519');
   test('ed25519');
   test('secp256k1');
+  test('alt_bn128');
 });
 
 describe('ECDH twist attack', () => {

test/ecdsa-test.js

@@ -131,6 +131,7 @@ describe('ECDSA', function() {
   test('p256');
   test('p384');
   test('p521');
+  test('alt_bn128');
 
   describe('RFC6979 vector', function() {
     function test(opt) {