feat!: initial commit

Signed-off-by: João Augusto Costa Branco Marado Torres <torres.dev@disroot.org>

1 files changed, 619 insertions, 0 deletions

diff --git a/src/lib/pgp/verify.test.ts b/src/lib/pgp/verify.test.ts
new file mode 100644
index 0000000..9c8ae9c
--- /dev/null
+++ b/src/lib/pgp/verify.test.ts
@@ -0,0 +1,619 @@
+/*
+import {
+  afterEach,
+  beforeAll,
+  beforeEach,
+  describe,
+  it,
+} from "@std/testing/bdd";
+import { type Stub, stub } from "@std/testing/mock";
+import { FakeTime } from "@std/testing/time";
+import { get } from "../../utils/anonymous.ts";
+import { SignatureVerifier } from "./verify.ts";
+import { assertEquals } from "@std/assert/equals";
+import { assert, assertExists, assertFalse, assertRejects } from "@std/assert";
+import {
+  corruptData,
+  corruptSignatureFormat,
+  createDetachedSignature,
+  createInMemoryFile,
+  generateKeyPair,
+  generateKeyPairWithSubkey,
+  startMockFs,
+} from "../../../tests/fixtures/setup.ts";
+import { emptyCommandOutput } from "../../../tests/fixtures/test_data.ts";
+
+startMockFs();
+
+describe("SignatureVerifier", () => {
+  let verifier: SignatureVerifier;
+  let aliceKeyPair: Awaited<ReturnType<typeof generateKeyPair>>;
+  let bobKeyPair: Awaited<ReturnType<typeof generateKeyPair>>;
+  let aliceWithSubkeyKeyPair: Awaited<ReturnType<typeof generateKeyPair>>;
+
+  beforeAll(async () => {
+    aliceKeyPair = await generateKeyPair("Alice");
+    bobKeyPair = await generateKeyPair("Bob");
+    aliceWithSubkeyKeyPair = await generateKeyPairWithSubkey("AliceWithSubkey");
+  });
+
+  beforeEach(() => {
+    verifier = new SignatureVerifier();
+    Deno.Command.prototype.output = stub(
+      Deno.Command.prototype,
+      "output",
+      () => emptyCommandOutput,
+    );
+  });
+
+  afterEach(() => {
+    (Deno.Command.prototype.output as Stub).restore();
+  });
+
+  describe("when verifying a file with a single signature", () => {
+    const originalData = new TextEncoder().encode(
+      "This is the original file content for single signature tests.",
+    ) as Uint8Array<ArrayBuffer>;
+    let originalDataUrl: URL;
+
+    beforeEach(() => {
+      // Create the data file in memory for each single signature test
+      originalDataUrl = createInMemoryFile(
+        new URL("file:///test/single_sig_data.txt"),
+        originalData,
+      );
+    });
+
+    it("Scenario: No signature found", async () => {
+      const verification = await verifier.verify([originalDataUrl]);
+
+      assertEquals(new Uint8Array(verification.data), originalData);
+      assertFalse(
+        await verification.dataCorrupted,
+        "Data is not corrupted in the absence of a signature to check against",
+      );
+      assertEquals(
+        verification.verifications,
+        undefined,
+        "Should not find any signatures to verify",
+      );
+      // commit is stubbed, so it will be undefined
+    });
+
+    it("Scenario: Signature cannot be checked (missing key - 'E')", async () => {
+      // Create a valid signature, but don't add the signing key to the verifier
+      const signature = await createDetachedSignature(
+        originalData,
+        aliceKeyPair.privateKey,
+      );
+      const signatureUrl = createInMemoryFile(
+        new URL("file:///test/single_sig_data.txt.sig"),
+        signature,
+      );
+
+      const verification = await verifier.verify([
+        originalDataUrl,
+        signatureUrl,
+      ]);
+
+      assertEquals(new Uint8Array(verification.data), originalData);
+      assertEquals(await verification.dataCorrupted, [false]);
+
+      assertEquals(verification.signatureCorrupted, [false]);
+
+      assertExists(verification.verifications, "Should find the signature");
+      assertEquals(verification.verifications.length, 1); // One signature found
+
+      const sigVerification = verification.verifications[0];
+      assertExists(sigVerification.packet);
+      assertFalse(await sigVerification.signatureCorrupted.then(get(0)));
+
+      assertRejects(
+        () => sigVerification.verified,
+        "Verification should fail due to missing key",
+      );
+      // assertEquals(await sigVerification.status, "E", "Status should be 'E'");
+
+      // The keys promise might resolve with an empty array or throw depending on implementation
+      // assert(?) sigVerification.keys resolves as expected
+    });
+
+    it("Scenario: Signature cannot be checked (Signature corrupted/malformed - 'E')", async () => {
+      const signature = await createDetachedSignature(
+        originalData,
+        aliceKeyPair.privateKey,
+      );
+      const corruptedSignature = corruptSignatureFormat(signature);
+      const corruptedSignatureUrl = createInMemoryFile(
+        new URL("file:///test/single_sig_data.txt.sig"),
+        corruptedSignature,
+      );
+
+      verifier.addKey(aliceKeyPair.publicKey);
+
+      const verification = await verifier.verify([
+        originalDataUrl,
+        corruptedSignatureUrl,
+      ]);
+
+      assertEquals(new Uint8Array(verification.data), originalData);
+      assertEquals(await verification.dataCorrupted, undefined);
+
+      assertEquals(verification.verifications, undefined);
+      // assertEquals(await sigVerification.status, "E", "Status should be 'E'");
+    });
+
+    it("Scenario: Bad signature ('B')", async () => {
+      // Create a valid signature for the original data
+      const signature = await createDetachedSignature(
+        originalData,
+        aliceKeyPair.privateKey,
+      );
+      const signatureUrl = createInMemoryFile(
+        new URL("file:///test/single_sig_data.txt.sig"),
+        signature,
+      );
+      // Create corrupted data
+      const corruptedData = corruptData(originalData);
+      const corruptedDataUrl = createInMemoryFile(
+        new URL("file:///test/corrupted_single_sig_data.txt"),
+        corruptedData,
+      );
+
+      verifier.addKey(aliceKeyPair.publicKey); // Key is available
+
+      // Verify the signature (of original data) against the corrupted data
+      const verification = await verifier.verify([
+        corruptedDataUrl,
+        signatureUrl,
+      ]);
+
+      assertEquals(new Uint8Array(verification.data), corruptedData); // The verifier processed the corrupted data
+      assert(
+        await verification.dataCorrupted,
+        "Data should be marked as corrupted because signature does not match",
+      ); // Assuming implementation detects this
+
+      assertFalse(verification.signatureCorrupted?.[0]);
+
+      assertExists(verification.verifications, "Should find the signature");
+      assertEquals(verification.verifications.length, 1); // One signature found
+
+      const sigVerification = verification.verifications[0];
+      assertExists(sigVerification.key); // Key should be found
+
+      assertExists(sigVerification.packet);
+      assertFalse(await sigVerification.signatureCorrupted.then(get(0))); // Signature data itself is not corrupted
+
+      // Expect verification to fail and report 'B'
+      assertRejects(
+        () => sigVerification.verified,
+        "Verification should fail due to data mismatch",
+      );
+      // assertEquals(await sigVerification.status, "B", "Status should be 'B'");
+    });
+
+    it("Scenario: Good signature ('G')", async () => {
+      const signature = await createDetachedSignature(
+        originalData,
+        aliceKeyPair.privateKey,
+      );
+      const signatureUrl = createInMemoryFile(
+        new URL("file:///test/single_sig_data.txt.sig"),
+        signature,
+      );
+
+      // Add the key and assume it's ultimately trusted for this scenario
+      // In a real test, you might explicitly set trust levels if openpgp.js supports it easily
+      verifier.addKey(aliceKeyPair.publicKey);
+
+      const verification = await verifier.verify([
+        originalDataUrl,
+        signatureUrl,
+      ]);
+
+      assertEquals(new Uint8Array(verification.data), originalData);
+      assertFalse(
+        await verification.dataCorrupted?.then((x) => x[0]),
+        "Data should not be marked corrupted for a good signature",
+      );
+
+      assertFalse(verification.signatureCorrupted?.[0]);
+
+      assertExists(verification.verifications, "Should find the signature");
+      assertEquals(verification.verifications.length, 1);
+
+      const sigVerification = verification.verifications[0];
+      assertExists(sigVerification.key, "Should find the signing key");
+      const signingKey = await sigVerification.key; // Assuming one key found
+      assertExists(signingKey, "Should find the signing key");
+      assertEquals(signingKey.getKeyID(), aliceKeyPair.publicKey.getKeyID());
+
+      assertExists(sigVerification.packet);
+      assertFalse(await sigVerification.signatureCorrupted.then((x) => x[0]));
+
+      // Expect verification to succeed and report 'G'
+      assert(
+        await sigVerification.verified,
+        "Verification should succeed for a good signature",
+      );
+      // assertEquals(await sigVerification.status, "G", "Status should be 'G'");
+    });
+
+    it("Scenario: Good signature, unknown validity ('U')", async () => {
+      const signature = await createDetachedSignature(
+        originalData,
+        aliceKeyPair.privateKey,
+      );
+      const signatureUrl = createInMemoryFile(
+        new URL("file:///test/single_sig_data.txt.sig"),
+        signature,
+      );
+
+      // Add the key but do *not* establish ultimate trust for this key in the verifier's context
+      // This scenario relies on your verifier or OpenPGP.js handling the 'unknown trust' case.
+      verifier.addKey(aliceKeyPair.publicKey); // Key is available, but trust level is not set
+
+      const verification = await verifier.verify([
+        originalDataUrl,
+        signatureUrl,
+      ]);
+
+      assertEquals(new Uint8Array(verification.data), originalData);
+      assertFalse(await verification.dataCorrupted?.then((x) => x[0]));
+
+      assertFalse(verification.signatureCorrupted?.[0]);
+
+      assertExists(verification.verifications, "Should find the signature");
+      assertEquals(verification.verifications.length, 1);
+
+      const sigVerification = verification.verifications[0];
+      assertExists(sigVerification.key);
+
+      assertExists(sigVerification.packet);
+      assertFalse(await sigVerification.signatureCorrupted.then((x) => x[0]));
+
+      // Expect cryptographic verification to succeed, but status to be 'U'
+      assert(
+        await sigVerification.verified,
+        "Cryptographic verification should succeed",
+      );
+      // assertEquals(
+      //   await sigVerification.status,
+      //   "U",
+      //   "Status should be 'U' due to unknown validity",
+      // );
+    });
+
+    // TODO(#): Add tests for Scenarios involving Key Expiration ('X', 'Y')
+    // This requires creating keys with specific expiration dates and mocking the system clock
+    it("Scenario: Good signature, key expired *after* signature time ('X')", async () => {
+      // Use fake time to control the 'now'
+      const time = new FakeTime();
+
+      const keyExpirationTime = time.now + 30 * 1000;
+      const keyPairWithExpiry = await generateKeyPair("AliceWithExpiry", {
+        keyExpirationTime,
+      });
+
+      const signature = await createDetachedSignature(
+        originalData,
+        keyPairWithExpiry.privateKey,
+      );
+      const signatureUrl = createInMemoryFile(
+        new URL("file:///test/sig_expired_after.sig"),
+        signature,
+      );
+
+      time.tick(60 * 1000);
+
+      verifier.addKey(keyPairWithExpiry.publicKey);
+
+      const verification = await verifier.verify([
+        originalDataUrl,
+        signatureUrl,
+      ]);
+
+      time.restore();
+
+      assertFalse(await verification.dataCorrupted?.then((x) => x[0]));
+
+      assertFalse(verification.signatureCorrupted?.[0]);
+
+      assertExists(verification.verifications);
+      // const expirationDate = await verification.verifications[0].keys[0].then((
+      //   x,
+      // ) => x.getExpirationTime());
+      // assertEquals(
+      //   expirationDate?.valueOf(),
+      //   new Date(keyExpirationTime).valueOf(),
+      // );
+      assertExists(await verification.verifications[0].packet);
+      assertFalse(
+        await verification.verifications[0].signatureCorrupted.then((x) =>
+          x[0]
+        ),
+      );
+      assert(await verification.verifications[0].verified);
+
+      // assertEquals(
+      //   await verification.verifications![0].status,
+      //   "X",
+      //   "Status should be 'X' due to key expired after signature",
+      // );
+    });
+
+    it("Scenario: Good signature, key expired *before* signature time ('Y')", async () => {
+      // Use fake time to control the 'now' when creating the key (for expiration)
+      const time = new FakeTime();
+
+      const keyExpirationTime = time.now + 30 * 1000;
+      const keyPairExpiredBefore = await generateKeyPair("AliceExpiredBefore", {
+        keyExpirationTime,
+      });
+
+      time.tick(60 * 1000);
+
+      const signature = await createDetachedSignature(
+        originalData,
+        keyPairExpiredBefore.privateKey,
+      );
+      const signatureUrl = createInMemoryFile(
+        new URL("file:///test/sig_expired_before.sig"),
+        signature,
+      );
+
+      verifier.addKey(keyPairExpiredBefore.publicKey);
+
+      time.tick(60 * 1000);
+
+      const verification = await verifier.verify([
+        originalDataUrl,
+        signatureUrl,
+      ]);
+
+      time.restore();
+
+      assertFalse(await verification.dataCorrupted?.then((x) => x[0]));
+
+      assertFalse(verification.signatureCorrupted?.[0]);
+
+      assertExists(verification.verifications);
+      // const expirationDate = await verification.verifications[0].keys[0].then((
+      //   x,
+      // ) => x.getExpirationTime());
+      // assertEquals(
+      //   expirationDate?.valueOf(),
+      //   new Date(keyExpirationTime).valueOf(),
+      // );
+      assertExists(await verification.verifications[0].packet);
+      assertFalse(
+        await verification.verifications[0].signatureCorrupted.then((x) =>
+          x[0]
+        ),
+      );
+      assert(await verification.verifications[0].verified);
+
+      //assertEquals(
+      //  await verification.verifications![0].status,
+      //  "Y",
+      //  "Status should be 'Y' due to key expired before signature",
+      //);
+    });
+
+    // // TODO: Add tests for Scenarios involving Key Revocation ('R', 'Y')
+    // // This requires creating and distributing key revocation certificates. Simulating this is complex and might need mocking OpenPGP.js internal behavior or relying on its revocation handling.
+
+    // it("Scenario: Good signature, key revoked *after* signature time ('R')", async () => {
+    //   // This requires creating a revocation certificate for the key *after* signing.
+    //   assert(
+    //     false,
+    //     "Test not implemented: Simulating key revocation requires revocation certs.",
+    //   );
+    // });
+
+    // it("Scenario: Good signature, key revoked *before* signature time ('Y')", async () => {
+    //   // This requires creating a revocation certificate for the key *before* signing.
+    //   assert(
+    //     false,
+    //     "Test not implemented: Simulating key revocation requires revocation certs.",
+    //   );
+    // });
+
+    // it("Scenario: Signature cannot be checked (Public key available but not signing)", async () => {
+    //   // Generate a key with only encryption or certification usage flags
+    //   const nonSigningKeyPair = await generateKeyPair("AliceNonSigning", {
+    //     usage: ["encrypt"],
+    //   }); // Or ["certify"]
+
+    //   const signature = await createDetachedSignature(
+    //     originalData,
+    //     aliceKeyPair.privateKey,
+    //   ); // Signed with a signing key
+    //   const signatureUrl = createInMemoryFile(
+    //     new URL("file:///test/sig_non_signing_key.sig"),
+    //     signature,
+    //   );
+
+    //   // Add the non-signing key to the verifier instead of the actual signing key
+    //   await verifier.addKey(nonSigningKeyPair.publicKey);
+
+    //   const verification: Verification = await verifier.verify([
+    //     originalDataUrl,
+    //     signatureUrl,
+    //   ]);
+
+    //   assertExists(verification.verifications, "Should find the signature");
+    //   assertEquals(verification.verifications.length, 1);
+
+    //   const sigVerification = verification.verifications[0];
+    //   // Key is found, but it's the wrong type of key for verification
+    //   assertExists(sigVerification.keys, "Should find a key");
+
+    //   // Expect verification to fail and report 'E' or potentially 'B' depending on how openpgp.js handles this
+    //   // OpenPGP.js often reports 'E' if the key's capabilities don't match the packet type.
+    //   assertEquals(
+    //     await sigVerification.verified,
+    //     false,
+    //     "Verification should fail with a non-signing key",
+    //   );
+    //   // We expect 'E' as the most likely status
+    //   assertEquals(
+    //     await sigVerification.status,
+    //     "E",
+    //     "Status should be 'E' with a non-signing key",
+    //   );
+    // });
+
+    // TODO: Add scenarios involving signing subkeys if your verifier needs to distinguish them
+    // These would require more complex key generation and potentially inspecting the packet details.
+  });
+
+  //   // --- Scenarios for multiple signatures ---
+  //   describe("when verifying a file with multiple signatures", () => {
+  //      const originalData = new TextEncoder().encode("This file has multiple signatures.");
+  //      let originalDataUrl: URL;
+  //
+  //      beforeEach(() => {
+  //          originalDataUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt"), originalData);
+  //      });
+  //
+  //
+  //       it("Scenario: All signatures are Good ('G')", async () => {
+  //            // Create signatures by Alice and Bob
+  //            const aliceSignature = await createDetachedSignature(originalData, aliceKeyPair.privateKey);
+  //            const bobSignature = await createDetachedSignature(originalData, bobKeyPair.privateKey);
+  //
+  //            const aliceSignatureUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt.alice.sig"), aliceSignature);
+  //            const bobSignatureUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt.bob.sig"), bobSignature);
+  //
+  //            // Add both signing keys (assume trusted for this scenario)
+  //            await verifier.addKey(aliceKeyPair.publicKey);
+  //            await verifier.addKey(bobKeyPair.publicKey);
+  //
+  //            // Verify with multiple signature files
+  //            const verification: Verification = await verifier.verify([originalDataUrl, aliceSignatureUrl, bobSignatureUrl]);
+  //
+  //            assertEquals(new Uint8Array(verification.data), originalData);
+  //            assertEquals(verification.dataCorrupted, false);
+  //            assertExists(verification.verifications);
+  //            assertEquals(verification.verifications.length, 2); // Two signatures found
+  //
+  //            // Check the status of each verification result
+  //            const statuses = await Promise.all(verification.verifications.map(v => v.status));
+  //            assertArrayIncludes(statuses, ['G', 'G'], "Both signatures should have 'G' status");
+  //
+  //            // Check the key IDs found for each verification
+  //            const keyIDs = await Promise.all(verification.verifications.map(async v => (await v.keys)[0]?.getKeyID()));
+  //            assertArrayIncludes(keyIDs.filter(defined), [aliceKeyPair.publicKey.getKeyID(), bobKeyPair.publicKey.getKeyID()]);
+  //       });
+  //
+  //        it("Scenario: Some signatures are Good ('G'), others are Bad ('B')", async () => {
+  //             // Create a good signature by Alice
+  //             const aliceSignature = await createDetachedSignature(originalData, aliceKeyPair.privateKey);
+  //             const aliceSignatureUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt.alice.sig"), aliceSignature);
+  //
+  //             // Create a bad signature by attempting to sign corrupted data with Bob's key
+  //             const corruptedDataForBadSig = corruptData(originalData);
+  //             const bobBadSignature = await createDetachedSignature(corruptedDataForBadSig, bobKeyPair.privateKey);
+  //             const bobBadSignatureUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt.bob.sig"), bobBadSignature);
+  //
+  //
+  //            // Add both signing keys
+  //            await verifier.addKey(aliceKeyPair.publicKey);
+  //            await verifier.addKey(bobKeyPair.publicKey);
+  //
+  //            // Verify against the original data, but provide one good and one bad signature file
+  //            const verification: Verification = await verifier.verify([originalDataUrl, aliceSignatureUrl, bobBadSignatureUrl]);
+  //
+  //            assertEquals(new Uint8Array(verification.data), originalData); // Verifier should use the original data if found and matching a good sig
+  //            assertEquals(verification.dataCorrupted, false, "Data should not be marked corrupted if at least one good signature matches");
+  //
+  //            assertExists(verification.verifications);
+  //            assertEquals(verification.verifications.length, 2);
+  //
+  //            // Check the status of each verification result
+  //            const statuses = await Promise.all(verification.verifications.map(v => v.status));
+  //            // Expect one 'G' and one 'B' status
+  //            assertEquals(statuses.filter(s => s === 'G').length, 1);
+  //            assertEquals(statuses.filter(s => s === 'B').length, 1);
+  //
+  //            // You would also need to check which key corresponded to the 'G' and 'B' status
+  //            // This requires correlating the verification result with the key ID/fingerprint.
+  //             const verifications = await Promise.all(verification.verifications.map(async v => ({ status: await v.status, keyID: (await Promise.all(v.keys))[0]?.getKeyID() })));
+  //
+  //             assert(verifications.some(v => v.status === 'G' && v.keyID === aliceKeyPair.publicKey.getKeyID()), "Alice's signature should be Good");
+  //             assert(verifications.some(v => v.status === 'B' && v.keyID === bobKeyPair.publicKey.getKeyID()), "Bob's signature should be Bad");
+  //        });
+  //
+  //        it("Scenario: Some signatures cannot be checked ('E'), others are Good ('G')", async () => {
+  //            // Create a good signature by Alice
+  //            const aliceSignature = await createDetachedSignature(originalData, aliceKeyPair.privateKey);
+  //            const aliceSignatureUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt.alice.sig"), aliceSignature);
+  //
+  //             // Create a signature by Bob but don't add Bob's key to the verifier (will result in 'E')
+  //            const bobSignature = await createDetachedSignature(originalData, bobKeyPair.privateKey);
+  //            const bobSignatureUrl = createInMemoryFile(new URL("file:///test/multi_sig_data.txt.bob.sig"), bobSignature);
+  //
+  //
+  //            // Add only Alice's key
+  //            await verifier.addKey(aliceKeyPair.publicKey);
+  //
+  //            const verification: Verification = await verifier.verify([originalDataUrl, aliceSignatureUrl, bobSignatureUrl]);
+  //
+  //            assertEquals(new Uint8Array(verification.data), originalData);
+  //            assertEquals(verification.dataCorrupted, false);
+  //            assertExists(verification.verifications);
+  //            assertEquals(verification.verifications.length, 2);
+  //
+  //            const statuses = await Promise.all(verification.verifications.map(v => v.status));
+  //
+  //            assertEquals(statuses.filter(s => s === 'G').length, 1, "One signature should be Good (Alice)");
+  //            assertEquals(statuses.filter(s => s === 'E').length, 1, "One signature should be 'E' (Bob - missing key)");
+  //
+  //            const verifications = await Promise.all(verification.verifications.map(async v => ({ status: await v.status, keyID: (await Promise.all(v.keys))[0]?.getKeyID() })));
+  //
+  //             assert(verifications.some(v => v.status === 'G' && v.keyID === aliceKeyPair.publicKey.getKeyID()), "Alice's signature should be Good");
+  //             // For the 'E' status (missing key), the keyID might be undefined or the partial KeyID from the packet.
+  //             // We'll just check that one status is 'E'.
+  //              assert(verifications.some(v => v.status === 'E'), "One signature should be 'E'");
+  //        });
+  //
+  //
+  //         // TODO: Continue adding tests for all combinations from the multiple signatures table
+  //         // This requires combining different key states (expired, revoked, untrusted) for different signers
+  //         // within the same verification process. This is the most complex part.
+  //
+  //          it("Scenario: All signatures Unknown Validity ('U')", async () => {
+  //               // Requires generating signatures with keys that are valid but not ultimately trusted for all signers.
+  //               // Then verifying without establishing a trust path for any key.
+  //              assert(false, "Test not implemented: Simulating unknown trust for all signatures.");
+  //          });
+  //
+  //          it("Scenario: At least one Good signature, with others having Key Status issues (e.g., 'X', 'Y', 'R')", async () => {
+  //              // Requires creating signatures with a mix of good keys and expired/revoked keys for different signers.
+  //              assert(false, "Test not implemented: Combining different key states for multiple signers.");
+  //          });
+  //
+  //          it("Scenario: All signatures have Key Status issues ('X', 'Y', 'R')", async () => {
+  //               // Requires creating signatures with only expired or revoked keys for all signers.
+  //              assert(false, "Test not implemented: Simulating all signatures with key status issues.");
+  //          });
+  //
+  //          it("Scenario: Combination of Bad, Unknown, and Key Status issues", async () => {
+  //               // This is a very complex scenario combining multiple failure types across different signatures.
+  //              assert(false, "Test not implemented: Simulating a complex mix of failure types.");
+  //          });
+  //
+  //          it("Scenario: At least one signature is valid, but some Public Keys not available", async () => {
+  //               // Requires providing multiple signature files, but only providing some of the signing keys to the verifier.
+  //              assert(false, "Test not implemented: Simulating missing keys for some signatures in a multi-signature scenario.");
+  //          });
+  //
+  //           it("Scenario: At least one signature is valid, but some Public Keys available but not Signing Keys", async () => {
+  //                // Requires providing multiple signature files, and providing a key that is NOT a signing key for one of them.
+  //               assert(false, "Test not implemented: Simulating non-signing keys for some signatures in a multi-signature scenario.");
+  //           });
+  //   });
+});
+*/