49 lines
2.3 KiB
JavaScript
49 lines
2.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.encodeToCurve = exports.hashToCurve = exports.secp384r1 = exports.p384 = void 0;
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/*! noble-curves - MIT License (c) 2022 Paul Miller (paulmillr.com) */
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const sha512_1 = require("@noble/hashes/sha512");
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const _shortw_utils_js_1 = require("./_shortw_utils.js");
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const hash_to_curve_js_1 = require("./abstract/hash-to-curve.js");
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const modular_js_1 = require("./abstract/modular.js");
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const weierstrass_js_1 = require("./abstract/weierstrass.js");
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// NIST secp384r1 aka p384
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// https://www.secg.org/sec2-v2.pdf, https://neuromancer.sk/std/nist/P-384
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// Field over which we'll do calculations.
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// prettier-ignore
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const P = BigInt('0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff');
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const Fp = (0, modular_js_1.Field)(P);
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const CURVE_A = Fp.create(BigInt('-3'));
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// prettier-ignore
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const CURVE_B = BigInt('0xb3312fa7e23ee7e4988e056be3f82d19181d9c6efe8141120314088f5013875ac656398d8a2ed19d2a85c8edd3ec2aef');
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// prettier-ignore
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exports.p384 = (0, _shortw_utils_js_1.createCurve)({
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a: CURVE_A, // Equation params: a, b
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b: CURVE_B,
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Fp, // Field: 2n**384n - 2n**128n - 2n**96n + 2n**32n - 1n
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// Curve order, total count of valid points in the field.
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n: BigInt('0xffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973'),
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// Base (generator) point (x, y)
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Gx: BigInt('0xaa87ca22be8b05378eb1c71ef320ad746e1d3b628ba79b9859f741e082542a385502f25dbf55296c3a545e3872760ab7'),
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Gy: BigInt('0x3617de4a96262c6f5d9e98bf9292dc29f8f41dbd289a147ce9da3113b5f0b8c00a60b1ce1d7e819d7a431d7c90ea0e5f'),
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h: BigInt(1),
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lowS: false,
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}, sha512_1.sha384);
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exports.secp384r1 = exports.p384;
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const mapSWU = /* @__PURE__ */ (() => (0, weierstrass_js_1.mapToCurveSimpleSWU)(Fp, {
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A: CURVE_A,
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B: CURVE_B,
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Z: Fp.create(BigInt('-12')),
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}))();
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const htf = /* @__PURE__ */ (() => (0, hash_to_curve_js_1.createHasher)(exports.secp384r1.ProjectivePoint, (scalars) => mapSWU(scalars[0]), {
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DST: 'P384_XMD:SHA-384_SSWU_RO_',
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encodeDST: 'P384_XMD:SHA-384_SSWU_NU_',
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p: Fp.ORDER,
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m: 1,
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k: 192,
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expand: 'xmd',
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hash: sha512_1.sha384,
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}))();
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exports.hashToCurve = (() => htf.hashToCurve)();
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exports.encodeToCurve = (() => htf.encodeToCurve)();
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//# sourceMappingURL=p384.js.map
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