const chai = require("chai"); const babyjub = require("../src/babyjub.js"); const Scalar = require("ffjavascript").Scalar; const assert = chai.assert; // const bigInt = require("big-integer"); function buff2hex(buff) { function i2hex(i) { return ('0' + i.toString(16)).slice(-2); } return Array.from(buff).map(i2hex).join(''); } describe("Baby Jub js test", function () { this.timeout(100000); it("Should add point (0,1) and (0,1)", () => { const p1 = [ babyjub.F.e(0), babyjub.F.e(1)]; const p2 = [ babyjub.F.e(0), babyjub.F.e(1) ]; const out = babyjub.addPoint(p1, p2); assert(babyjub.F.eq(out[0], babyjub.F.zero)); assert(babyjub.F.eq(out[1], babyjub.F.one)); }); it("Should base be 8*generator", () => { let res; res = babyjub.addPoint(babyjub.Generator, babyjub.Generator); res = babyjub.addPoint(res, res); res = babyjub.addPoint(res, res); assert(babyjub.F.eq(res[0], babyjub.Base8[0])); assert(babyjub.F.eq(res[1], babyjub.Base8[1])); }); it("Should add 2 same numbers", () => { const p1 = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; const p2 = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; const out = babyjub.addPoint(p1, p2); assert(babyjub.F.eq(out[0], babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"))); assert(babyjub.F.eq(out[1], babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"))); }); it("Should add 2 different numbers", () => { const p1 = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; const p2 = [ babyjub.F.e("16540640123574156134436876038791482806971768689494387082833631921987005038935"), babyjub.F.e("20819045374670962167435360035096875258406992893633759881276124905556507972311"), ]; const out = babyjub.addPoint(p1, p2); assert(babyjub.F.eq(out[0], babyjub.F.e("7916061937171219682591368294088513039687205273691143098332585753343424131937"))); assert(babyjub.F.eq(out[1], babyjub.F.e("14035240266687799601661095864649209771790948434046947201833777492504781204499"))); }); it("should mulPointEscalar 0", () => { const p = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; const r = babyjub.mulPointEscalar(p, 3); let r2 = babyjub.addPoint(p, p); r2 = babyjub.addPoint(r2, p); assert.equal(r2[0].toString(), r[0].toString()); assert.equal(r2[1].toString(), r[1].toString()); assert.equal(r[0].toString(), "19372461775513343691590086534037741906533799473648040012278229434133483800898"); assert.equal(r[1].toString(), "9458658722007214007257525444427903161243386465067105737478306991484593958249"); }); it("should mulPointEscalar 1", () => { const p = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; const r = babyjub.mulPointEscalar(p, Scalar.fromString("14035240266687799601661095864649209771790948434046947201833777492504781204499")); assert.equal(r[0].toString(), "17070357974431721403481313912716834497662307308519659060910483826664480189605"); assert.equal(r[1].toString(), "4014745322800118607127020275658861516666525056516280575712425373174125159339"); }); it("should mulPointEscalar 2", () => { const p = [ babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"), babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"), ]; const r = babyjub.mulPointEscalar(p, Scalar.fromString("20819045374670962167435360035096875258406992893633759881276124905556507972311")); assert.equal(r[0].toString(), "13563888653650925984868671744672725781658357821216877865297235725727006259983"); assert.equal(r[1].toString(), "8442587202676550862664528699803615547505326611544120184665036919364004251662"); }); it("should inCurve 1", () => { const p = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; assert(babyjub.inCurve(p)); }); it("should inCurve 2", () => { const p = [ babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"), babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"), ]; assert(babyjub.inCurve(p)); }); it("should inSubgroup 1", () => { const p = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; assert(babyjub.inSubgroup(p)); }); it("should inSubgroup 2", () => { const p = [ babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"), babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"), ]; assert(babyjub.inSubgroup(p)); }); it("should packPoint - unpackPoint 1", () => { const p = [ babyjub.F.e("17777552123799933955779906779655732241715742912184938656739573121738514868268"), babyjub.F.e("2626589144620713026669568689430873010625803728049924121243784502389097019475"), ]; const buf = babyjub.packPoint(p); assert.equal(buff2hex(buf), "53b81ed5bffe9545b54016234682e7b2f699bd42a5e9eae27ff4051bc698ce85"); const p2 = babyjub.unpackPoint(buf); assert.equal(p2[0].toString(), "17777552123799933955779906779655732241715742912184938656739573121738514868268"); assert.equal(p2[1].toString(), "2626589144620713026669568689430873010625803728049924121243784502389097019475"); }); it("should packPoint - unpackPoint 2", () => { const p = [ babyjub.F.e("6890855772600357754907169075114257697580319025794532037257385534741338397365"), babyjub.F.e("4338620300185947561074059802482547481416142213883829469920100239455078257889"), ]; const buf = babyjub.packPoint(p); assert.equal(buff2hex(buf), "e114eb17eddf794f063a68fecac515e3620e131976108555735c8b0773929709"); const p2 = babyjub.unpackPoint(buf); assert.equal(p2[0].toString(), "6890855772600357754907169075114257697580319025794532037257385534741338397365"); assert.equal(p2[1].toString(), "4338620300185947561074059802482547481416142213883829469920100239455078257889"); }); });