Marc Mintel
5397309103
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81 lines
3.7 KiB
Plaintext
81 lines
3.7 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.checkKeyTypeWithJwk = void 0;
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const invalid_key_input_js_1 = require("./invalid_key_input.js");
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const is_key_like_js_1 = require("../runtime/is_key_like.js");
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const jwk = require("./is_jwk.js");
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const tag = (key) => key?.[Symbol.toStringTag];
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const jwkMatchesOp = (alg, key, usage) => {
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if (key.use !== undefined && key.use !== 'sig') {
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throw new TypeError('Invalid key for this operation, when present its use must be sig');
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}
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if (key.key_ops !== undefined && key.key_ops.includes?.(usage) !== true) {
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throw new TypeError(`Invalid key for this operation, when present its key_ops must include ${usage}`);
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}
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if (key.alg !== undefined && key.alg !== alg) {
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throw new TypeError(`Invalid key for this operation, when present its alg must be ${alg}`);
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}
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return true;
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};
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const symmetricTypeCheck = (alg, key, usage, allowJwk) => {
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if (key instanceof Uint8Array)
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return;
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if (allowJwk && jwk.isJWK(key)) {
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if (jwk.isSecretJWK(key) && jwkMatchesOp(alg, key, usage))
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return;
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throw new TypeError(`JSON Web Key for symmetric algorithms must have JWK "kty" (Key Type) equal to "oct" and the JWK "k" (Key Value) present`);
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}
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if (!(0, is_key_like_js_1.default)(key)) {
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throw new TypeError((0, invalid_key_input_js_1.withAlg)(alg, key, ...is_key_like_js_1.types, 'Uint8Array', allowJwk ? 'JSON Web Key' : null));
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}
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if (key.type !== 'secret') {
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throw new TypeError(`${tag(key)} instances for symmetric algorithms must be of type "secret"`);
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}
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};
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const asymmetricTypeCheck = (alg, key, usage, allowJwk) => {
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if (allowJwk && jwk.isJWK(key)) {
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switch (usage) {
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case 'sign':
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if (jwk.isPrivateJWK(key) && jwkMatchesOp(alg, key, usage))
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return;
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throw new TypeError(`JSON Web Key for this operation be a private JWK`);
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case 'verify':
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if (jwk.isPublicJWK(key) && jwkMatchesOp(alg, key, usage))
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return;
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throw new TypeError(`JSON Web Key for this operation be a public JWK`);
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}
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}
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if (!(0, is_key_like_js_1.default)(key)) {
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throw new TypeError((0, invalid_key_input_js_1.withAlg)(alg, key, ...is_key_like_js_1.types, allowJwk ? 'JSON Web Key' : null));
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}
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if (key.type === 'secret') {
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throw new TypeError(`${tag(key)} instances for asymmetric algorithms must not be of type "secret"`);
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}
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if (usage === 'sign' && key.type === 'public') {
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throw new TypeError(`${tag(key)} instances for asymmetric algorithm signing must be of type "private"`);
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}
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if (usage === 'decrypt' && key.type === 'public') {
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throw new TypeError(`${tag(key)} instances for asymmetric algorithm decryption must be of type "private"`);
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}
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if (key.algorithm && usage === 'verify' && key.type === 'private') {
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throw new TypeError(`${tag(key)} instances for asymmetric algorithm verifying must be of type "public"`);
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}
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if (key.algorithm && usage === 'encrypt' && key.type === 'private') {
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throw new TypeError(`${tag(key)} instances for asymmetric algorithm encryption must be of type "public"`);
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}
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};
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function checkKeyType(allowJwk, alg, key, usage) {
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const symmetric = alg.startsWith('HS') ||
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alg === 'dir' ||
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alg.startsWith('PBES2') ||
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/^A\d{3}(?:GCM)?KW$/.test(alg);
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if (symmetric) {
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symmetricTypeCheck(alg, key, usage, allowJwk);
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}
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else {
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asymmetricTypeCheck(alg, key, usage, allowJwk);
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}
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}
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exports.default = checkKeyType.bind(undefined, false);
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exports.checkKeyTypeWithJwk = checkKeyType.bind(undefined, true);
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