feat: add provenance attestation

This adds a new `--provenance` flag to npm for provenance attestation
during `npm publish`

If set to `true`, npm will detect if it is running in GitHub actions and
will generate an appropriate attestation bundle for that environment.

The primary work in this PR was done by
[@bdehamer](https://github.com/bdehamer), with some cleanup and
edge-case handling added by the npm cli team.

Author: bdehamer

DEPENDENCIES.md

@@ -398,6 +398,7 @@ graph LR;
   libnpmpack-->pacote;
   libnpmpack-->spawk;
   libnpmpack-->tap;
+  libnpmpublish-->ci-info;
   libnpmpublish-->lodash.clonedeep;
   libnpmpublish-->nock;
   libnpmpublish-->normalize-package-data;
@@ -407,6 +408,7 @@ graph LR;
   libnpmpublish-->npmcli-mock-registry["@npmcli/mock-registry"];
   libnpmpublish-->npmcli-template-oss["@npmcli/template-oss"];
   libnpmpublish-->semver;
+  libnpmpublish-->sigstore;
   libnpmpublish-->ssri;
   libnpmpublish-->tap;
   libnpmsearch-->nock;
@@ -734,6 +736,8 @@ graph LR;
   readable-stream-->util-deprecate;
   rimraf-->glob;
   semver-->lru-cache;
+  sigstore-->make-fetch-happen;
+  sigstore-->tuf-js;
   socks-->ip;
   socks-->smart-buffer;
   socks-proxy-agent-->agent-base;
@@ -756,6 +760,8 @@ graph LR;
   tar-->minizlib;
   tar-->mkdirp;
   tar-->yallist;
+  tuf-js-->make-fetch-happen;
+  tuf-js-->minimatch;
   unique-filename-->unique-slug;
   unique-slug-->imurmurhash;
   validate-npm-package-license-->spdx-correct;

lib/commands/publish.js

@@ -35,6 +35,7 @@ class Publish extends BaseCommand {
     'workspace',
     'workspaces',
     'include-workspace-root',
+    'provenance',
   ]
 
   static usage = ['<package-spec>']

lib/utils/config/definitions.js

@@ -1620,6 +1620,15 @@ define('progress', {
   },
 })
 
+define('provenance', {
+  default: false,
+  type: Boolean,
+  description: `
+    Indicates that a provenance statement should be generated.
+  `,
+  flatten,
+})
+
 define('proxy', {
   default: null,
   type: [null, false, url], // allow proxy to be disabled explicitly

node_modules/.gitignore

@@ -241,6 +241,7 @@
 !/semver/node_modules/lru-cache
 !/set-blocking
 !/signal-exit
+!/sigstore
 !/smart-buffer
 !/socks-proxy-agent
 !/socks
@@ -263,6 +264,7 @@
 !/text-table
 !/tiny-relative-date
 !/treeverse
+!/tuf-js
 !/unique-filename
 !/unique-slug
 !/util-deprecate

node_modules/sigstore/LICENSE

@@ -0,0 +1,202 @@
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node_modules/sigstore/bin/sigstore.js

@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+/*
+Copyright 2022 The Sigstore Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+require('../dist/cli').processArgv();

node_modules/sigstore/dist/ca/format.d.ts

@@ -0,0 +1,5 @@
+/// <reference types="node" />
+/// <reference types="node" />
+import { KeyObject } from 'crypto';
+import { CertificateRequest } from '../client/fulcio';
+export declare function toCertificateRequest(publicKey: KeyObject, challenge: Buffer): CertificateRequest;

node_modules/sigstore/dist/ca/format.js

@@ -0,0 +1,14 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.toCertificateRequest = void 0;
+function toCertificateRequest(publicKey, challenge) {
+    return {
+        publicKey: {
+            content: publicKey
+                .export({ type: 'spki', format: 'der' })
+                .toString('base64'),
+        },
+        signedEmailAddress: challenge.toString('base64'),
+    };
+}
+exports.toCertificateRequest = toCertificateRequest;

node_modules/sigstore/dist/ca/index.d.ts

@@ -0,0 +1,14 @@
+/// <reference types="node" />
+/// <reference types="node" />
+import { KeyObject } from 'crypto';
+export interface CA {
+    createSigningCertificate: (identityToken: string, publicKey: KeyObject, challenge: Buffer) => Promise<string[]>;
+}
+export interface CAClientOptions {
+    fulcioBaseURL: string;
+}
+export declare class CAClient implements CA {
+    private fulcio;
+    constructor(options: CAClientOptions);
+    createSigningCertificate(identityToken: string, publicKey: KeyObject, challenge: Buffer): Promise<string[]>;
+}

node_modules/sigstore/dist/ca/index.js

@@ -0,0 +1,23 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CAClient = void 0;
+const client_1 = require("../client");
+const error_1 = require("../error");
+const util_1 = require("../util");
+const format_1 = require("./format");
+class CAClient {
+    constructor(options) {
+        this.fulcio = new client_1.Fulcio({ baseURL: options.fulcioBaseURL });
+    }
+    async createSigningCertificate(identityToken, publicKey, challenge) {
+        const request = (0, format_1.toCertificateRequest)(publicKey, challenge);
+        try {
+            const certificate = await this.fulcio.createSigningCertificate(identityToken, request);
+            return util_1.pem.split(certificate);
+        }
+        catch (err) {
+            throw new error_1.InternalError('error creating signing certificate', err);
+        }
+    }
+}
+exports.CAClient = CAClient;

node_modules/sigstore/dist/ca/verify/chain.d.ts

@@ -0,0 +1,3 @@
+import * as sigstore from '../../types/sigstore';
+import { x509Certificate } from '../../x509/cert';
+export declare function verifyChain(bundleCerts: sigstore.X509Certificate[], certificateAuthorities: sigstore.CertificateAuthority[]): x509Certificate[];