test/test_ECC.js

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    to you under the Apache License, Version 2.0 (the
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    http://www.apache.org/licenses/LICENSE-2.0

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    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.
*/

/* Test ECC - test driver and function exerciser for ECDH/ECIES/ECDSA API Functions */

var chai = require('chai');

var CTX = require("../index");

var expect = chai.expect;

var all_curves = ['ED25519', 'GOLDILOCKS', 'NIST256', 'BRAINPOOL', 'ANSSI', 'HIFIVE', 'C25519', 'SECP256K1', 'NIST384', 'C41417', 'NIST521', 'NUMS256W',
    'NUMS256E', 'NUMS384W', 'NUMS384E', 'NUMS512W', 'NUMS512E', 'BN254', 'BN254CX', 'BLS381', 'BLS383', 'BLS461', 'FP256BN', 'FP512BN', 'BLS24', 'BLS48'
];

all_curves.forEach(function(curve) {

    var ctx = new CTX(curve);

    describe('TEST ECC ' + curve, function() {

        var pp = "M0ng00se",
            sha = ctx.ECP.HASH_TYPE,
            S1 = [],
            W0 = [],
            W1 = [],
            Z0 = [],
            Z1 = [],
            RAW = [],
            SALT = [],
            P1 = [],
            P2 = [],
            V = [],
            M1 = [],
            CS = [],
            DS = [],
            rng = new ctx.RAND(),
            T = new Array(12), // must specify required length
            PW, KEY1, KEY2, C, M2, S0, rtn;

        before(function(done) {
            this.timeout(0);
            rng.clean();
            for (i = 0; i < 100; i++) RAW[i] = i;
            rng.seed(100, RAW);
            for (i = 0; i < 8; i++) SALT[i] = (i + 1); // set Salt
            PW = ctx.ECDH.stringtobytes(pp);
            // private key S0 of size EGS bytes derived from Password and Salt 
            S0 = ctx.ECDH.PBKDF2(sha, PW, SALT, 1000, ctx.ECDH.EGS);
            done();
        });


        it('test ECDH', function(done) {
            this.timeout(0);

            // Generate Key pair S/W 
            ctx.ECDH.KEY_PAIR_GENERATE(null, S0, W0);

            rtn = ctx.ECDH.PUBLIC_KEY_VALIDATE(W0);
            expect(rtn).to.be.equal(0);
            // Random private key for other party 
            ctx.ECDH.KEY_PAIR_GENERATE(rng, S1, W1);

            rtn = ctx.ECDH.PUBLIC_KEY_VALIDATE(W1);
            expect(rtn).to.be.equal(0);

            // Calculate common key using DH - IEEE 1363 method 

            ctx.ECDH.ECPSVDP_DH(S0, W1, Z0);
            ctx.ECDH.ECPSVDP_DH(S1, W0, Z1);

            var same = true;
            for (i = 0; i < ctx.ECDH.EFS; i++)
                if (Z0[i] != Z1[i]) same = false;


            KEY1 = ctx.ECDH.KDF2(sha, Z0, null, ctx.ECP.AESKEY);
            KEY2 = ctx.ECDH.KDF2(sha, Z1, null, ctx.ECP.AESKEY);

            expect(KEY1.toString()).to.be.equal(KEY2.toString());
            done();
        });

        if (ctx.ECP.CURVETYPE != ctx.ECP.MONTGOMERY) {
            it('test ECIES', function(done) {
                this.timeout(0);
                P1[0] = 0x0;
                P1[1] = 0x1;
                P1[2] = 0x2;
                P2[0] = 0x0;
                P2[1] = 0x1;
                P2[2] = 0x2;
                P2[3] = 0x3;

                for (i = 0; i <= 16; i++) M1[i] = i;

                C = ctx.ECDH.ECIES_ENCRYPT(sha, P1, P2, rng, W1, M1, V, T);

                M2 = ctx.ECDH.ECIES_DECRYPT(sha, P1, P2, V, C, T, S1);

                expect(M1.toString()).to.equal(M2.toString());

                done();
            });

            it('test ECDSA', function(done) {
                this.timeout(0);
                expect(ctx.ECDH.ECPSP_DSA(sha, rng, S0, M1, CS, DS)).to.be.equal(0);
                expect(ctx.ECDH.ECPVP_DSA(sha, W0, M1, CS, DS)).to.be.equal(0);
                done();
            });
        }
    });
});