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d47147fb6a
This commit moves "deno_std/node" in "ext/node" crate. The code is transpiled and snapshotted during the build process. During the first pass a minimal amount of work was done to create the snapshot, a lot of code in "ext/node" depends on presence of "Deno" global. This code will be gradually fixed in the follow up PRs to migrate it to import relevant APIs from "internal:" modules. Currently the code from snapshot is not used in any way, and all Node/npm compatibility still uses code from "https://deno.land/std/node" (or from the location specified by "DENO_NODE_COMPAT_URL"). This will also be handled in a follow up PRs. --------- Co-authored-by: crowlkats <crowlkats@toaxl.com> Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com> Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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// Copyright 2017 crypto-browserify. All rights reserved. MIT license.
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import { BN } from "internal:deno_node/polyfills/_crypto/crypto_browserify/bn.js/bn.js";
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import { randomBytes } from "internal:deno_node/polyfills/_crypto/crypto_browserify/randombytes.ts";
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import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
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function blind(priv) {
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const r = getr(priv);
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const blinder = r.toRed(BN.mont(priv.modulus)).redPow(
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new BN(priv.publicExponent),
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).fromRed();
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return { blinder: blinder, unblinder: r.invm(priv.modulus) };
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}
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function getr(priv) {
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const len = priv.modulus.byteLength();
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let r;
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do {
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r = new BN(randomBytes(len));
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} while (
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r.cmp(priv.modulus) >= 0 || !r.umod(priv.prime1) || !r.umod(priv.prime2)
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);
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return r;
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}
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function crt(msg, priv) {
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const blinds = blind(priv);
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const len = priv.modulus.byteLength();
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const blinded = new BN(msg).mul(blinds.blinder).umod(priv.modulus);
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const c1 = blinded.toRed(BN.mont(priv.prime1));
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const c2 = blinded.toRed(BN.mont(priv.prime2));
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const qinv = priv.coefficient;
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const p = priv.prime1;
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const q = priv.prime2;
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const m1 = c1.redPow(priv.exponent1).fromRed();
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const m2 = c2.redPow(priv.exponent2).fromRed();
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const h = m1.isub(m2).imul(qinv).umod(p).imul(q);
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return m2.iadd(h).imul(blinds.unblinder).umod(priv.modulus).toArrayLike(
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Buffer,
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"be",
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len,
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);
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}
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crt.getr = getr;
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export default crt;
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