45 lines
1.4 KiB
TypeScript
45 lines
1.4 KiB
TypeScript
import { AsnParser, AsnSerializer } from "@peculiar/asn1-schema";
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import { IJsonConvertible, JsonParser, JsonSerializer } from "@peculiar/json-schema";
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import * as core from "webcrypto-core";
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import { AsymmetricKey } from "../../keys";
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import { getOidByNamedCurve } from "./helper";
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export class EdPrivateKey extends AsymmetricKey implements IJsonConvertible {
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public readonly type: "private" = "private";
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public override algorithm!: EcKeyAlgorithm;
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public getKey() {
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const keyInfo = AsnParser.parse(this.data, core.asn1.PrivateKeyInfo);
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return AsnParser.parse(keyInfo.privateKey, core.asn1.CurvePrivateKey);
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}
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public toJSON() {
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const key = this.getKey();
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const json: JsonWebKey = {
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kty: "OKP",
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crv: this.algorithm.namedCurve,
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key_ops: this.usages,
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ext: this.extractable,
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};
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return Object.assign(json, JsonSerializer.toJSON(key));
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}
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public fromJSON(json: JsonWebKey) {
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if (!json.crv) {
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throw new core.OperationError(`Cannot get named curve from JWK. Property 'crv' is required`);
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}
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const keyInfo = new core.asn1.PrivateKeyInfo();
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keyInfo.privateKeyAlgorithm.algorithm = getOidByNamedCurve(json.crv);
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const key = JsonParser.fromJSON(json, { targetSchema: core.asn1.CurvePrivateKey });
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keyInfo.privateKey = AsnSerializer.serialize(key);
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this.data = Buffer.from(AsnSerializer.serialize(keyInfo));
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return this;
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}
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}
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