Add RekorV2 client

.changeset/dirty-ghosts-guess.md

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+---
+---

packages/sign/src/__tests__/external/rekor-v2.test.ts

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+/*
+Copyright 2025 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.
+*/
+import nock from 'nock';
+import { RekorV2 } from '../../external/rekor-v2';
+
+import { PublicKeyDetails } from '@sigstore/protobuf-specs';
+import { CreateEntryRequest } from '@sigstore/protobuf-specs/rekor/v2';
+
+describe('RekorV2', () => {
+  const baseURL = 'http://localhost:8080';
+  const subject = new RekorV2({ baseURL });
+
+  it('should create an instance', () => {
+    expect(subject).toBeTruthy();
+  });
+
+  describe('#createEntry', () => {
+    // Create a minimal valid HashedRekordRequestV002 entry for v2 API
+    const proposedEntry: CreateEntryRequest = {
+      spec: {
+        $case: 'hashedRekordRequestV002',
+        hashedRekordRequestV002: {
+          digest: Buffer.from(
+            '5dJ2SakUeOXY4ut1hBHPomz+hTn6tc0KTzcGosA+epE=',
+            'base64'
+          ), //
+          signature: {
+            content: Buffer.from(
+              'MEUCIG4QZL8qNVlYtlzSP8GoUUBWZm+VX4nMpxuSeryLFLq8AiEAzGwoNj4Z0PMvbXjC/4aQT5IaBtMSvANyuV4LoF6uLI0=',
+              'base64'
+            ),
+            verifier: {
+              verifier: {
+                $case: 'publicKey',
+                publicKey: {
+                  rawBytes: Buffer.from(
+                    'MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE0q9Q+tdG195CXKfmUx1YatvZ/mN3rhjpOfm1lvskWprH9Pxpe9Xc6LjEJbBcVPhutkfUvBB9RDk+42SNE6/5xg==',
+                    'base64'
+                  ),
+                },
+              },
+              keyDetails: PublicKeyDetails.PKIX_ECDSA_P256_SHA_256,
+            },
+          },
+        },
+      },
+    };
+
+    const responseBody = {
+      logIndex: '412114',
+      logId: {
+        keyId: 'zxGZFVvd0FEmjR8WrFwMdcAJ9vtaY/QXf44Y1wUeP6A=',
+      },
+      kindVersion: {
+        kind: 'hashedrekord',
+        version: '0.0.2',
+      },
+      integratedTime: '0',
+      inclusionPromise: null,
+      inclusionProof: {
+        logIndex: '412114',
+        rootHash: '+8vUkEgBK/ansexBUomzocaWoPEmPIzxJC/y+xNMQN4=',
+        treeSize: '412115',
+        hashes: [
+          'KIoYVJ0TqmaEkFboP7YWTjSh8vFjVECmokcTOAByfIM=',
+          'Umf0h0cK2hegTzNnSgsXszyiA4bp5OvEvP+GrWq3C8w=',
+          'vNQeSNBfepYZI2Ez3ViKdCft0JH87ZS8IGKwixxUVjc=',
+          'JBAugd5awOqmHXIKgz1MOjlR5f37VqmP0bWoRVcHX5M=',
+          'xYH2mAxGxfOgvSOLnItT2LsJt+Z2a2egjf8QJFwK7jA=',
+          'PbZWM3NitzChx9A22m/kddDtzh2bAKX5Fy7j76l3z2k=',
+          'sKX9Sbsahvw5DiC2oP6pbZsDi1NzuNS1nIULXkCC57o=',
+          'pfTCxXHnCM253jwYxVJcuUhmoTTtDxznn92QhN0M4Ws=',
+          'cJ8uk2ZvZyfg+HRILKOHcyHu2pvI8Fz3R1MyMvyzWtA=',
+        ],
+        checkpoint: {
+          envelope:
+            'log2025-1.rekor.sigstore.dev\n412115\n+8vUkEgBK/ansexBUomzocaWoPEmPIzxJC/y+xNMQN4=\n\n— log2025-1.rekor.sigstore.dev zxGZFahCZ/+MqTjH4rC5MWcdLDWbpetE5l30RZfQc4BQkRjWSoKipEUPjvHENeZDHIlAsuezJcLzUVvItpNjaSRoMAs=\n',
+        },
+      },
+      canonicalizedBody:
+        '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',
+    };
+
+    describe('when the entry is successfully added', () => {
+      beforeEach(() => {
+        nock(baseURL)
+          .matchHeader('Accept', 'application/json')
+          .matchHeader('Content-Type', 'application/json')
+          .matchHeader('User-Agent', new RegExp('sigstore-js\\/\\d+.\\d+.\\d+'))
+          .post('/api/v2/log/entries')
+          .reply(201, responseBody);
+      });
+
+      it('returns the new entry', async () => {
+        const result = await subject.createEntry(proposedEntry);
+
+        expect(result).toBeDefined();
+        expect(result.logIndex).toBeDefined();
+        expect(typeof result.logIndex).toBe('string');
+        expect(result.logId).toBeDefined();
+        expect(result.logId?.keyId).toBeDefined();
+        expect(result.integratedTime).toBeDefined();
+        expect(typeof result.integratedTime).toBe('string');
+        expect(result.kindVersion).toBeDefined();
+        expect(result.kindVersion?.kind).toBe('hashedrekord');
+        expect(result.inclusionPromise).toBeDefined();
+      });
+    });
+
+    describe('when a matching entry already exists', () => {
+      const responseBody = {
+        code: 409,
+        message: 'An equivalent entry already exists',
+      };
+
+      beforeEach(() => {
+        nock(baseURL).post('/api/v2/log/entries').reply(409, responseBody);
+      });
+
+      it('returns an error', async () => {
+        await expect(subject.createEntry(proposedEntry)).rejects.toThrow(
+          '(409) An equivalent entry already exists'
+        );
+      });
+    });
+  });
+});

packages/sign/src/external/rekor-v2.ts

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+/*
+Copyright 2025 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.
+*/
+import { fetchWithRetry } from './fetch';
+
+import type { TransparencyLogEntry } from '@sigstore/protobuf-specs';
+import { CreateEntryRequest } from '@sigstore/protobuf-specs/rekor/v2';
+import type { FetchOptions } from '../types/fetch';
+
+// Client options
+export type RekorOptions = {
+  baseURL: string;
+} & FetchOptions;
+
+/**
+ * Rekor API client.
+ */
+export class RekorV2 {
+  private options: RekorOptions;
+
+  constructor(options: RekorOptions) {
+    this.options = options;
+  }
+
+  public async createEntry(
+    proposedEntry: CreateEntryRequest
+  ): Promise<TransparencyLogEntry> {
+    const { baseURL, timeout, retry } = this.options;
+    const url = `${baseURL}/api/v2/log/entries`;
+    const response = await fetchWithRetry(url, {
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      body: JSON.stringify(CreateEntryRequest.toJSON(proposedEntry)),
+      timeout,
+      retry,
+    });
+
+    return response.json();
+  }
+}