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25 lines
1.1 KiB
TypeScript
25 lines
1.1 KiB
TypeScript
import { createCurve } from '@noble/curves/_shortw_utils';
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import { sha256 } from '@noble/hashes/sha256';
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import { Field } from '@noble/curves/abstract/modular';
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// brainpoolP256r1: https://datatracker.ietf.org/doc/html/rfc5639#section-3.4
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// eslint-disable-next-line new-cap
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const Fp = Field(BigInt('0xa9fb57dba1eea9bc3e660a909d838d726e3bf623d52620282013481d1f6e5377'));
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const CURVE_A = Fp.create(BigInt('0x7d5a0975fc2c3057eef67530417affe7fb8055c126dc5c6ce94a4b44f330b5d9'));
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const CURVE_B = BigInt('0x26dc5c6ce94a4b44f330b5d9bbd77cbf958416295cf7e1ce6bccdc18ff8c07b6');
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// prettier-ignore
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export const brainpoolP256r1 = createCurve({
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a: CURVE_A, // Equation params: a, b
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b: CURVE_B,
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Fp,
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// Curve order (q), total count of valid points in the field
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n: BigInt('0xa9fb57dba1eea9bc3e660a909d838d718c397aa3b561a6f7901e0e82974856a7'),
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// Base (generator) point (x, y)
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Gx: BigInt('0x8bd2aeb9cb7e57cb2c4b482ffc81b7afb9de27e1e3bd23c23a4453bd9ace3262'),
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Gy: BigInt('0x547ef835c3dac4fd97f8461a14611dc9c27745132ded8e545c1d54c72f046997'),
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h: BigInt(1),
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lowS: false
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} as const, sha256);
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