132 lines
6.0 KiB
JavaScript
132 lines
6.0 KiB
JavaScript
/**
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* Internal module for NIST P256, P384, P521 curves.
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* Do not use for now.
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* @module
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*/
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/*! noble-curves - MIT License (c) 2022 Paul Miller (paulmillr.com) */
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import { sha256, sha384, sha512 } from '@noble/hashes/sha2.js';
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import { createCurve } from "./_shortw_utils.js";
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import { createHasher } from "./abstract/hash-to-curve.js";
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import { Field } from "./abstract/modular.js";
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import { mapToCurveSimpleSWU, } from "./abstract/weierstrass.js";
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// p = 2n**224n * (2n**32n-1n) + 2n**192n + 2n**96n - 1n
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// a = Fp256.create(BigInt('-3'));
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const p256_CURVE = {
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p: BigInt('0xffffffff00000001000000000000000000000000ffffffffffffffffffffffff'),
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n: BigInt('0xffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551'),
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h: BigInt(1),
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a: BigInt('0xffffffff00000001000000000000000000000000fffffffffffffffffffffffc'),
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b: BigInt('0x5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b'),
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Gx: BigInt('0x6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296'),
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Gy: BigInt('0x4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5'),
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};
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// p = 2n**384n - 2n**128n - 2n**96n + 2n**32n - 1n
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const p384_CURVE = {
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p: BigInt('0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff'),
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n: BigInt('0xffffffffffffffffffffffffffffffffffffffffffffffffc7634d81f4372ddf581a0db248b0a77aecec196accc52973'),
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h: BigInt(1),
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a: BigInt('0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffc'),
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b: BigInt('0xb3312fa7e23ee7e4988e056be3f82d19181d9c6efe8141120314088f5013875ac656398d8a2ed19d2a85c8edd3ec2aef'),
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Gx: BigInt('0xaa87ca22be8b05378eb1c71ef320ad746e1d3b628ba79b9859f741e082542a385502f25dbf55296c3a545e3872760ab7'),
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Gy: BigInt('0x3617de4a96262c6f5d9e98bf9292dc29f8f41dbd289a147ce9da3113b5f0b8c00a60b1ce1d7e819d7a431d7c90ea0e5f'),
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};
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// p = 2n**521n - 1n
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const p521_CURVE = {
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p: BigInt('0x1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff'),
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n: BigInt('0x01fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffa51868783bf2f966b7fcc0148f709a5d03bb5c9b8899c47aebb6fb71e91386409'),
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h: BigInt(1),
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a: BigInt('0x1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffc'),
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b: BigInt('0x0051953eb9618e1c9a1f929a21a0b68540eea2da725b99b315f3b8b489918ef109e156193951ec7e937b1652c0bd3bb1bf073573df883d2c34f1ef451fd46b503f00'),
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Gx: BigInt('0x00c6858e06b70404e9cd9e3ecb662395b4429c648139053fb521f828af606b4d3dbaa14b5e77efe75928fe1dc127a2ffa8de3348b3c1856a429bf97e7e31c2e5bd66'),
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Gy: BigInt('0x011839296a789a3bc0045c8a5fb42c7d1bd998f54449579b446817afbd17273e662c97ee72995ef42640c550b9013fad0761353c7086a272c24088be94769fd16650'),
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};
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const Fp256 = Field(p256_CURVE.p);
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const Fp384 = Field(p384_CURVE.p);
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const Fp521 = Field(p521_CURVE.p);
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function createSWU(Point, opts) {
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const map = mapToCurveSimpleSWU(Point.Fp, opts);
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return (scalars) => map(scalars[0]);
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}
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/** NIST P256 (aka secp256r1, prime256v1) curve, ECDSA and ECDH methods. */
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export const p256 = createCurve({ ...p256_CURVE, Fp: Fp256, lowS: false }, sha256);
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/** Hashing / encoding to p256 points / field. RFC 9380 methods. */
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export const p256_hasher = /* @__PURE__ */ (() => {
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return createHasher(p256.Point, createSWU(p256.Point, {
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A: p256_CURVE.a,
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B: p256_CURVE.b,
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Z: p256.Point.Fp.create(BigInt('-10')),
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}), {
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DST: 'P256_XMD:SHA-256_SSWU_RO_',
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encodeDST: 'P256_XMD:SHA-256_SSWU_NU_',
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p: p256_CURVE.p,
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m: 1,
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k: 128,
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expand: 'xmd',
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hash: sha256,
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});
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})();
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// export const p256_oprf: OPRF = createORPF({
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// name: 'P256-SHA256',
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// Point: p256.Point,
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// hash: sha256,
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// hashToGroup: p256_hasher.hashToCurve,
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// hashToScalar: p256_hasher.hashToScalar,
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// });
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/** NIST P384 (aka secp384r1) curve, ECDSA and ECDH methods. */
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export const p384 = createCurve({ ...p384_CURVE, Fp: Fp384, lowS: false }, sha384);
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/** Hashing / encoding to p384 points / field. RFC 9380 methods. */
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export const p384_hasher = /* @__PURE__ */ (() => {
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return createHasher(p384.Point, createSWU(p384.Point, {
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A: p384_CURVE.a,
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B: p384_CURVE.b,
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Z: p384.Point.Fp.create(BigInt('-12')),
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}), {
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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: p384_CURVE.p,
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m: 1,
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k: 192,
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expand: 'xmd',
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hash: sha384,
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});
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})();
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// export const p384_oprf: OPRF = createORPF({
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// name: 'P384-SHA384',
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// Point: p384.Point,
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// hash: sha384,
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// hashToGroup: p384_hasher.hashToCurve,
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// hashToScalar: p384_hasher.hashToScalar,
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// });
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// const Fn521 = Field(p521_CURVE.n, { allowedScalarLengths: [65, 66] });
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/** NIST P521 (aka secp521r1) curve, ECDSA and ECDH methods. */
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export const p521 = createCurve({ ...p521_CURVE, Fp: Fp521, lowS: false, allowedPrivateKeyLengths: [130, 131, 132] }, sha512);
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/** @deprecated use `p256` for consistency with `p256_hasher` */
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export const secp256r1 = p256;
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/** @deprecated use `p384` for consistency with `p384_hasher` */
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export const secp384r1 = p384;
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/** @deprecated use `p521` for consistency with `p521_hasher` */
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export const secp521r1 = p521;
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/** Hashing / encoding to p521 points / field. RFC 9380 methods. */
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export const p521_hasher = /* @__PURE__ */ (() => {
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return createHasher(p521.Point, createSWU(p521.Point, {
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A: p521_CURVE.a,
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B: p521_CURVE.b,
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Z: p521.Point.Fp.create(BigInt('-4')),
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}), {
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DST: 'P521_XMD:SHA-512_SSWU_RO_',
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encodeDST: 'P521_XMD:SHA-512_SSWU_NU_',
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p: p521_CURVE.p,
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m: 1,
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k: 256,
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expand: 'xmd',
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hash: sha512,
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});
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})();
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// export const p521_oprf: OPRF = createORPF({
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// name: 'P521-SHA512',
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// Point: p521.Point,
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// hash: sha512,
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// hashToGroup: p521_hasher.hashToCurve,
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// hashToScalar: p521_hasher.hashToScalar, // produces L=98 just like in RFC
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// });
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//# sourceMappingURL=nist.js.map
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