javascript/signature/ecdsa_private_key_manager_test.js - third_party/tink - Git at Google

 // 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.
 //
 ////////////////////////////////////////////////////////////////////////////////

 goog.module('tink.signature.EcdsaPrivateKeyManagerTest');
 goog.setTestOnly('tink.signature.EcdsaPrivateKeyManagerTest');

 const EcdsaPrivateKeyManager = goog.require('tink.signature.EcdsaPrivateKeyManager');
 const EcdsaPublicKeyManager = goog.require('tink.signature.EcdsaPublicKeyManager');
 const KeyManager = goog.require('tink.KeyManager');
 const PbEcdsaKeyFormat = goog.require('proto.google.crypto.tink.EcdsaKeyFormat');
 const PbEcdsaParams = goog.require('proto.google.crypto.tink.EcdsaParams');
 const PbEcdsaPrivateKey = goog.require('proto.google.crypto.tink.EcdsaPrivateKey');
 const PbEcdsaPublicKey = goog.require('proto.google.crypto.tink.EcdsaPublicKey');
 const PbEcdsaSignatureEncoding = goog.require('proto.google.crypto.tink.EcdsaSignatureEncoding');
 const PbEllipticCurveType = goog.require('proto.google.crypto.tink.EllipticCurveType');
 const PbHashType = goog.require('proto.google.crypto.tink.HashType');
 const PbKeyData = goog.require('proto.google.crypto.tink.KeyData');
 const PublicKeySign = goog.require('tink.PublicKeySign');
 const PublicKeyVerify = goog.require('tink.PublicKeyVerify');
 const Random = goog.require('tink.subtle.Random');
 const Registry = goog.require('tink.Registry');
 const TestCase = goog.require('goog.testing.TestCase');
 const testSuite = goog.require('goog.testing.testSuite');
 const userAgent = goog.require('goog.userAgent');

 const PRIVATE_KEY_TYPE =
     'type.googleapis.com/google.crypto.tink.EcdsaPrivateKey';
 const PRIVATE_KEY_MATERIAL_TYPE = PbKeyData.KeyMaterialType.ASYMMETRIC_PRIVATE;
 const VERSION = 0;
 const PRIVATE_KEY_MANAGER_PRIMITIVE = PublicKeySign;

 const PUBLIC_KEY_TYPE = 'type.googleapis.com/google.crypto.tink.EcdsaPublicKey';
 const PUBLIC_KEY_MATERIAL_TYPE = PbKeyData.KeyMaterialType.ASYMMETRIC_PUBLIC;
 const PUBLIC_KEY_MANAGER_PRIMITIVE = PublicKeyVerify;

 testSuite({
   shouldRunTests() {
     return !userAgent.EDGE;  // b/120286783
   },

   setUp() {
     // Use a generous promise timeout for running continuously.
     TestCase.getActiveTestCase().promiseTimeout = 1000 * 1000;  // 1000s
   },

   tearDown() {
     Registry.reset();
     // Reset the promise timeout to default value.
     TestCase.getActiveTestCase().promiseTimeout = 1000;  // 1s
   },

   async testNewKey_nullKeyFormat() {
     const manager = new EcdsaPrivateKeyManager();

     try {
       await manager.getKeyFactory().newKey(null);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.nullKeyFormat(), e.toString());
     }
   },

   async testNewKey_invalidSerializedKeyFormat() {
     const invalidSerializedKeyFormat = new Uint8Array(0);
     const manager = new EcdsaPrivateKeyManager();

     try {
       await manager.getKeyFactory().newKey(invalidSerializedKeyFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.invalidSerializedKeyFormat(), e.toString());
     }
   },

   async testNewKey_unsupportedKeyFormatProto() {
     const unsupportedKeyFormatProto = new PbEcdsaParams();
     const manager = new EcdsaPrivateKeyManager();

     try {
       await manager.getKeyFactory().newKey(unsupportedKeyFormatProto);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unsupportedKeyFormat(), e.toString());
     }
   },

   async testNewKey_invalidFormat_missingParams() {
     const invalidFormat = new PbEcdsaKeyFormat();
     const manager = new EcdsaPrivateKeyManager();

     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.invalidKeyFormatMissingParams(), e.toString());
     }
   },

   async testNewKey_invalidFormat_invalidParams() {
     const manager = new EcdsaPrivateKeyManager();

     // Unknown encoding.
     const invalidFormat = createKeyFormat();
     invalidFormat.getParams().setEncoding(
         PbEcdsaSignatureEncoding.UNKNOWN_ENCODING);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unknownEncoding(), e.toString());
     }
     invalidFormat.getParams().setEncoding(PbEcdsaSignatureEncoding.DER);

     // Unknown hash.
     invalidFormat.getParams().setHashType(PbHashType.UNKNOWN_HASH);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unknownHash(), e.toString());
     }
     invalidFormat.getParams().setHashType(PbHashType.SHA256);

     // Unknown curve.
     invalidFormat.getParams().setCurve(PbEllipticCurveType.UNKNOWN_CURVE);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unknownCurve(), e.toString());
     }

     // Bad hash + curve combinations.
     invalidFormat.getParams().setCurve(PbEllipticCurveType.NIST_P384);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(
           'CustomError: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256',
           e.toString());
     }

     invalidFormat.getParams().setCurve(PbEllipticCurveType.NIST_P521);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(
           'CustomError: expected SHA-512 (because curve is P-521) but got SHA-256',
           e.toString());
     }
   },

   async testNewKey_viaKeyFormat() {
     const keyFormats = createTestSetOfKeyFormats();
     const manager = new EcdsaPrivateKeyManager();

     for (let keyFormat of keyFormats) {
       const key = /** @type{!PbEcdsaPrivateKey} */ (
           await manager.getKeyFactory().newKey(keyFormat));

       assertObjectEquals(keyFormat.getParams(), key.getPublicKey().getParams());
       // The keys are tested more in tests for getPrimitive method below, where
       // the primitive based on the created key is tested.
     }
   },

   async testNewKeyData_invalidSerializedKeyFormat() {
     const serializedKeyFormats = [new Uint8Array(1), new Uint8Array(0)];
     const manager = new EcdsaPrivateKeyManager();

     const serializedKeyFormatsLength = serializedKeyFormats.length;
     for (let i = 0; i < serializedKeyFormatsLength; i++) {
       try {
         await manager.getKeyFactory().newKeyData(serializedKeyFormats[i]);
         fail(
             'An exception should be thrown for the string: ' +
             serializedKeyFormats[i]);
       } catch (e) {
         assertEquals(ExceptionText.invalidSerializedKeyFormat(), e.toString());
         continue;
       }
     }
   },

   async testNewKeyData_fromValidKeyFormat() {
     const keyFormats = createTestSetOfKeyFormats();
     const manager = new EcdsaPrivateKeyManager();

     for (let keyFormat of keyFormats) {
       const serializedKeyFormat = keyFormat.serializeBinary();
       const keyData = /** @type{!PbKeyData} */ (
           await manager.getKeyFactory().newKeyData(serializedKeyFormat));

       assertEquals(PRIVATE_KEY_TYPE, keyData.getTypeUrl());
       assertEquals(PRIVATE_KEY_MATERIAL_TYPE, keyData.getKeyMaterialType());

       const key = PbEcdsaPrivateKey.deserializeBinary(keyData.getValue());
       assertObjectEquals(keyFormat.getParams(), key.getPublicKey().getParams());
       // The keys are tested more in tests for getPrimitive method below, where
       // the primitive based on the created key is tested.
     }
   },

   testGetPublicKeyData_invalidPrivateKeySerialization() {
     const manager = new EcdsaPrivateKeyManager();

     const privateKey = new Uint8Array([0, 1]);  // not a serialized private key
     try {
       const factory = /** @type {!KeyManager.PrivateKeyFactory} */ (
           manager.getKeyFactory());
       factory.getPublicKeyData(privateKey);
     } catch (e) {
       assertEquals(ExceptionText.invalidSerializedKey(), e.toString());
     }
   },

   async testGetPublicKeyData_shouldWork() {
     const keyFormat = createKeyFormat();
     const manager = new EcdsaPrivateKeyManager();

     const privateKey = /** @type{!PbEcdsaPrivateKey} */ (
         await manager.getKeyFactory().newKey(keyFormat));
     const factory =
         /** @type {!KeyManager.PrivateKeyFactory} */ (manager.getKeyFactory());
     const publicKeyData =
         factory.getPublicKeyData(privateKey.serializeBinary());

     assertEquals(PUBLIC_KEY_TYPE, publicKeyData.getTypeUrl());
     assertEquals(PUBLIC_KEY_MATERIAL_TYPE, publicKeyData.getKeyMaterialType());
     const publicKey =
         PbEcdsaPublicKey.deserializeBinary(publicKeyData.getValue());
     assertObjectEquals(
         privateKey.getPublicKey().getVersion(), publicKey.getVersion());
     assertObjectEquals(
         privateKey.getPublicKey().getParams(), publicKey.getParams());
     assertObjectEquals(privateKey.getPublicKey().getX(), publicKey.getX());
     assertObjectEquals(privateKey.getPublicKey().getY(), publicKey.getY());
   },

   async testGetPrimitive_unsupportedPrimitiveType() {
     const manager = new EcdsaPrivateKeyManager();
     const keyFormat = createKeyFormat();
     const key = await manager.getKeyFactory().newKey(keyFormat);

     try {
       await manager.getPrimitive(PublicKeyVerify, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unsupportedPrimitive(), e.toString());
     }
   },

   async testGetPrimitive_unsupportedKeyDataType() {
     const manager = new EcdsaPrivateKeyManager();
     const keyFormat = createKeyFormat();
     const keyData =
         (await manager.getKeyFactory().newKeyData(keyFormat.serializeBinary()))
             .setTypeUrl('unsupported_key_type_url');

     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, keyData);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(
           ExceptionText.unsupportedKeyType(keyData.getTypeUrl()), e.toString());
     }
   },

   async testGetPrimitive_unsupportedKeyType() {
     const manager = new EcdsaPrivateKeyManager();
     let key = new PbEcdsaPublicKey();

     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unsupportedKeyType(), e.toString());
     }
   },

   async testGetPrimitive_highVersion() {
     const manager = new EcdsaPrivateKeyManager();
     const version = manager.getVersion() + 1;
     const keyFormat = createKeyFormat();
     const key =
         (await manager.getKeyFactory().newKey(keyFormat)).setVersion(version);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.versionOutOfBounds(), e.toString());
     }
   },

   async testGetPrimitive_invalidParams() {
     const manager = new EcdsaPrivateKeyManager();
     const keyFormat = createKeyFormat();
     const key = await manager.getKeyFactory().newKey(keyFormat);

     // Unknown encoding.
     key.getPublicKey().getParams().setEncoding(
         PbEcdsaSignatureEncoding.UNKNOWN_ENCODING);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unknownEncoding(), e.toString());
     }
     key.getPublicKey().getParams().setEncoding(PbEcdsaSignatureEncoding.DER);

     // Unknown hash.
     key.getPublicKey().getParams().setHashType(PbHashType.UNKNOWN_HASH);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unknownHash(), e.toString());
     }
     key.getPublicKey().getParams().setHashType(PbHashType.SHA256);

     // Unknown curve.
     key.getPublicKey().getParams().setCurve(PbEllipticCurveType.UNKNOWN_CURVE);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(ExceptionText.unknownCurve(), e.toString());
     }

     // Bad hash + curve combinations.
     key.getPublicKey().getParams().setCurve(PbEllipticCurveType.NIST_P384);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(
           'CustomError: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256',
           e.toString());
     }

     key.getPublicKey().getParams().setCurve(PbEllipticCurveType.NIST_P521);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e) {
       assertEquals(
           'CustomError: expected SHA-512 (because curve is P-521) but got SHA-256',
           e.toString());
     }
   },

   async testGetPrimitive_invalidSerializedKey() {
     const manager = new EcdsaPrivateKeyManager();
     const keyFormat = createKeyFormat();
     const keyData =
         await manager.getKeyFactory().newKeyData(keyFormat.serializeBinary());


     for (let i = 0; i < 2; ++i) {
       // Set the value of keyData to something which is not a serialization of a
       // proper key.
       keyData.setValue(new Uint8Array(i));
       try {
         await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, keyData);
         fail('An exception should be thrown ' + i.toString());
       } catch (e) {
         assertEquals(ExceptionText.invalidSerializedKey(), e.toString());
       }
     }
   },

   async testGetPrimitive_fromKey() {
     const keyFormats = createTestSetOfKeyFormats();
     const privateKeyManager = new EcdsaPrivateKeyManager();
     const publicKeyManager = new EcdsaPublicKeyManager();

     for (let keyFormat of keyFormats) {
       const key = await privateKeyManager.getKeyFactory().newKey(keyFormat);

       const /** !PublicKeyVerify */ publicKeyVerify =
           await publicKeyManager.getPrimitive(
               PUBLIC_KEY_MANAGER_PRIMITIVE, key.getPublicKey());
       const /** !PublicKeySign */ publicKeySign =
           await privateKeyManager.getPrimitive(
               PRIVATE_KEY_MANAGER_PRIMITIVE, key);

       const data = Random.randBytes(10);
       const signature = await publicKeySign.sign(data);
       const isValid = await publicKeyVerify.verify(signature, data);

       assertTrue(isValid);
     }
   },

   async testGetPrimitive_fromKeyData() {
     const keyFormats = createTestSetOfKeyFormats();
     const privateKeyManager = new EcdsaPrivateKeyManager();
     const publicKeyManager = new EcdsaPublicKeyManager();

     for (let keyFormat of keyFormats) {
       const serializedKeyFormat = keyFormat.serializeBinary();
       const keyData = await privateKeyManager.getKeyFactory().newKeyData(
           serializedKeyFormat);
       const factory = /** @type {!KeyManager.PrivateKeyFactory} */ (
           privateKeyManager.getKeyFactory());
       const publicKeyData = factory.getPublicKeyData(keyData.getValue_asU8());

       const /** !PublicKeyVerify */ publicKeyVerify =
           await publicKeyManager.getPrimitive(
               PUBLIC_KEY_MANAGER_PRIMITIVE, publicKeyData);
       const /** !PublicKeySign */ publicKeySign =
           await privateKeyManager.getPrimitive(
               PRIVATE_KEY_MANAGER_PRIMITIVE, keyData);

       const data = Random.randBytes(10);
       const signature = await publicKeySign.sign(data);
       const isValid = await publicKeyVerify.verify(signature, data);

       assertTrue(isValid);
     }
   },

   testDoesSupport() {
     const manager = new EcdsaPrivateKeyManager();
     assertTrue(manager.doesSupport(PRIVATE_KEY_TYPE));
   },

   testGetKeyType() {
     const manager = new EcdsaPrivateKeyManager();
     assertEquals(PRIVATE_KEY_TYPE, manager.getKeyType());
   },

   testGetPrimitiveType() {
     const manager = new EcdsaPrivateKeyManager();
     assertEquals(PRIVATE_KEY_MANAGER_PRIMITIVE, manager.getPrimitiveType());
   },

   testGetVersion() {
     const manager = new EcdsaPrivateKeyManager();
     assertEquals(VERSION, manager.getVersion());
   },
 });

 // Helper classes and functions
 class ExceptionText {
   /** @return {string} */
   static nullKeyFormat() {
     return 'CustomError: Key format has to be non-null.';
   }

   /** @return {string} */
   static invalidSerializedKeyFormat() {
     return 'CustomError: Input cannot be parsed as ' + PRIVATE_KEY_TYPE +
         ' key format proto.';
   }

   /** @return {string} */
   static unsupportedPrimitive() {
     return 'CustomError: Requested primitive type which is not supported by ' +
         'this key manager.';
   }

   /** @return {string} */
   static unsupportedKeyFormat() {
     return 'CustomError: Expected ' + PRIVATE_KEY_TYPE + ' key format proto.';
   }

   /**
    * @param {string=} opt_requestedKeyType
    * @return {string}
    */
   static unsupportedKeyType(opt_requestedKeyType) {
     const prefix = 'CustomError: Key type';
     const suffix =
         'is not supported. This key manager supports ' + PRIVATE_KEY_TYPE + '.';
     if (opt_requestedKeyType) {
       return prefix + ' ' + opt_requestedKeyType + ' ' + suffix;
     } else {
       return prefix + ' ' + suffix;
     }
   }

   /** @return {string} */
   static unknownEncoding() {
     return 'CustomError: Invalid public key - missing signature encoding.';
   }

   /** @return {string} */
   static unknownHash() {
     return 'CustomError: Unknown hash type.';
   }

   /** @return {string} */
   static unknownCurve() {
     return 'CustomError: Unknown curve type.';
   }

   /** @return {string} */
   static versionOutOfBounds() {
     return 'CustomError: Version is out of bound, must be between 0 and ' +
         VERSION + '.';
   }

   /** @return {string} */
   static invalidKeyFormatMissingParams() {
     return 'CustomError: Invalid key format - missing params.';
   }

   /** @return {string} */
   static invalidSerializedKey() {
     return 'CustomError: Input cannot be parsed as ' + PRIVATE_KEY_TYPE +
         ' key-proto.';
   }
 }

 /**
  * @param {?PbEllipticCurveType} curveType
  * @param {?PbHashType} hashType
  * @param {?PbEcdsaSignatureEncoding} encoding
  *
  * @return {!PbEcdsaParams}
  */
 const createParams = function(curveType, hashType, encoding) {
   const params =
       new PbEcdsaParams().setCurve(curveType).setHashType(hashType).setEncoding(
           encoding);

   return params;
 };

 /**
  * @param {?PbEllipticCurveType=} opt_curveType (default: NIST_P256)
  * @param {?PbHashType=} opt_hashType (default: SHA256)
  * @param {?PbEcdsaSignatureEncoding=} opt_encodingType (default: DER)
  *
  * @return {!PbEcdsaKeyFormat}
  */
 const createKeyFormat = function(
     opt_curveType = PbEllipticCurveType.NIST_P256,
     opt_hashType = PbHashType.SHA256,
     opt_encodingType = PbEcdsaSignatureEncoding.DER) {
   const keyFormat = new PbEcdsaKeyFormat().setParams(
       createParams(opt_curveType, opt_hashType, opt_encodingType));
   return keyFormat;
 };

 // Create set of key formats with all possible predefined/supported parameters.
 /** @return {!Array<!PbEcdsaKeyFormat>} */
 const createTestSetOfKeyFormats = function() {
   const /** !Array<!PbEcdsaKeyFormat> */ keyFormats = [];
   keyFormats.push(createKeyFormat(
       PbEllipticCurveType.NIST_P256, PbHashType.SHA256,
       PbEcdsaSignatureEncoding.DER));
   keyFormats.push(createKeyFormat(
       PbEllipticCurveType.NIST_P256, PbHashType.SHA256,
       PbEcdsaSignatureEncoding.IEEE_P1363));
   keyFormats.push(createKeyFormat(
       PbEllipticCurveType.NIST_P384, PbHashType.SHA512,
       PbEcdsaSignatureEncoding.DER));
   keyFormats.push(createKeyFormat(
       PbEllipticCurveType.NIST_P384, PbHashType.SHA512,
       PbEcdsaSignatureEncoding.IEEE_P1363));
   keyFormats.push(createKeyFormat(
       PbEllipticCurveType.NIST_P521, PbHashType.SHA512,
       PbEcdsaSignatureEncoding.DER));
   keyFormats.push(createKeyFormat(
       PbEllipticCurveType.NIST_P521, PbHashType.SHA512,
       PbEcdsaSignatureEncoding.IEEE_P1363));
   return keyFormats;
 };
	// 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.
	//
	////////////////////////////////////////////////////////////////////////////////

	goog.module('tink.signature.EcdsaPrivateKeyManagerTest');
	goog.setTestOnly('tink.signature.EcdsaPrivateKeyManagerTest');

	const EcdsaPrivateKeyManager = goog.require('tink.signature.EcdsaPrivateKeyManager');
	const EcdsaPublicKeyManager = goog.require('tink.signature.EcdsaPublicKeyManager');
	const KeyManager = goog.require('tink.KeyManager');
	const PbEcdsaKeyFormat = goog.require('proto.google.crypto.tink.EcdsaKeyFormat');
	const PbEcdsaParams = goog.require('proto.google.crypto.tink.EcdsaParams');
	const PbEcdsaPrivateKey = goog.require('proto.google.crypto.tink.EcdsaPrivateKey');
	const PbEcdsaPublicKey = goog.require('proto.google.crypto.tink.EcdsaPublicKey');
	const PbEcdsaSignatureEncoding = goog.require('proto.google.crypto.tink.EcdsaSignatureEncoding');
	const PbEllipticCurveType = goog.require('proto.google.crypto.tink.EllipticCurveType');
	const PbHashType = goog.require('proto.google.crypto.tink.HashType');
	const PbKeyData = goog.require('proto.google.crypto.tink.KeyData');
	const PublicKeySign = goog.require('tink.PublicKeySign');
	const PublicKeyVerify = goog.require('tink.PublicKeyVerify');
	const Random = goog.require('tink.subtle.Random');
	const Registry = goog.require('tink.Registry');
	const TestCase = goog.require('goog.testing.TestCase');
	const testSuite = goog.require('goog.testing.testSuite');
	const userAgent = goog.require('goog.userAgent');

	const PRIVATE_KEY_TYPE =
	'type.googleapis.com/google.crypto.tink.EcdsaPrivateKey';
	const PRIVATE_KEY_MATERIAL_TYPE = PbKeyData.KeyMaterialType.ASYMMETRIC_PRIVATE;
	const VERSION = 0;
	const PRIVATE_KEY_MANAGER_PRIMITIVE = PublicKeySign;

	const PUBLIC_KEY_TYPE = 'type.googleapis.com/google.crypto.tink.EcdsaPublicKey';
	const PUBLIC_KEY_MATERIAL_TYPE = PbKeyData.KeyMaterialType.ASYMMETRIC_PUBLIC;
	const PUBLIC_KEY_MANAGER_PRIMITIVE = PublicKeyVerify;

	testSuite({
	shouldRunTests() {
	return !userAgent.EDGE; // b/120286783
	},

	setUp() {
	// Use a generous promise timeout for running continuously.
	TestCase.getActiveTestCase().promiseTimeout = 1000 * 1000; // 1000s
	},

	tearDown() {
	Registry.reset();
	// Reset the promise timeout to default value.
	TestCase.getActiveTestCase().promiseTimeout = 1000; // 1s
	},

	async testNewKey_nullKeyFormat() {
	const manager = new EcdsaPrivateKeyManager();

	try {
	await manager.getKeyFactory().newKey(null);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.nullKeyFormat(), e.toString());
	}
	},

	async testNewKey_invalidSerializedKeyFormat() {
	const invalidSerializedKeyFormat = new Uint8Array(0);
	const manager = new EcdsaPrivateKeyManager();

	try {
	await manager.getKeyFactory().newKey(invalidSerializedKeyFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.invalidSerializedKeyFormat(), e.toString());
	}
	},

	async testNewKey_unsupportedKeyFormatProto() {
	const unsupportedKeyFormatProto = new PbEcdsaParams();
	const manager = new EcdsaPrivateKeyManager();

	try {
	await manager.getKeyFactory().newKey(unsupportedKeyFormatProto);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unsupportedKeyFormat(), e.toString());
	}
	},

	async testNewKey_invalidFormat_missingParams() {
	const invalidFormat = new PbEcdsaKeyFormat();
	const manager = new EcdsaPrivateKeyManager();

	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.invalidKeyFormatMissingParams(), e.toString());
	}
	},

	async testNewKey_invalidFormat_invalidParams() {
	const manager = new EcdsaPrivateKeyManager();

	// Unknown encoding.
	const invalidFormat = createKeyFormat();
	invalidFormat.getParams().setEncoding(
	PbEcdsaSignatureEncoding.UNKNOWN_ENCODING);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unknownEncoding(), e.toString());
	}
	invalidFormat.getParams().setEncoding(PbEcdsaSignatureEncoding.DER);

	// Unknown hash.
	invalidFormat.getParams().setHashType(PbHashType.UNKNOWN_HASH);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unknownHash(), e.toString());
	}
	invalidFormat.getParams().setHashType(PbHashType.SHA256);

	// Unknown curve.
	invalidFormat.getParams().setCurve(PbEllipticCurveType.UNKNOWN_CURVE);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unknownCurve(), e.toString());
	}

	// Bad hash + curve combinations.
	invalidFormat.getParams().setCurve(PbEllipticCurveType.NIST_P384);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(
	'CustomError: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256',
	e.toString());
	}

	invalidFormat.getParams().setCurve(PbEllipticCurveType.NIST_P521);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(
	'CustomError: expected SHA-512 (because curve is P-521) but got SHA-256',
	e.toString());
	}
	},

	async testNewKey_viaKeyFormat() {
	const keyFormats = createTestSetOfKeyFormats();
	const manager = new EcdsaPrivateKeyManager();

	for (let keyFormat of keyFormats) {
	const key = /** @type{!PbEcdsaPrivateKey} */ (
	await manager.getKeyFactory().newKey(keyFormat));

	assertObjectEquals(keyFormat.getParams(), key.getPublicKey().getParams());
	// The keys are tested more in tests for getPrimitive method below, where
	// the primitive based on the created key is tested.
	}
	},

	async testNewKeyData_invalidSerializedKeyFormat() {
	const serializedKeyFormats = [new Uint8Array(1), new Uint8Array(0)];
	const manager = new EcdsaPrivateKeyManager();

	const serializedKeyFormatsLength = serializedKeyFormats.length;
	for (let i = 0; i < serializedKeyFormatsLength; i++) {
	try {
	await manager.getKeyFactory().newKeyData(serializedKeyFormats[i]);
	fail(
	'An exception should be thrown for the string: ' +
	serializedKeyFormats[i]);
	} catch (e) {
	assertEquals(ExceptionText.invalidSerializedKeyFormat(), e.toString());
	continue;
	}
	}
	},

	async testNewKeyData_fromValidKeyFormat() {
	const keyFormats = createTestSetOfKeyFormats();
	const manager = new EcdsaPrivateKeyManager();

	for (let keyFormat of keyFormats) {
	const serializedKeyFormat = keyFormat.serializeBinary();
	const keyData = /** @type{!PbKeyData} */ (
	await manager.getKeyFactory().newKeyData(serializedKeyFormat));

	assertEquals(PRIVATE_KEY_TYPE, keyData.getTypeUrl());
	assertEquals(PRIVATE_KEY_MATERIAL_TYPE, keyData.getKeyMaterialType());

	const key = PbEcdsaPrivateKey.deserializeBinary(keyData.getValue());
	assertObjectEquals(keyFormat.getParams(), key.getPublicKey().getParams());
	// The keys are tested more in tests for getPrimitive method below, where
	// the primitive based on the created key is tested.
	}
	},

	testGetPublicKeyData_invalidPrivateKeySerialization() {
	const manager = new EcdsaPrivateKeyManager();

	const privateKey = new Uint8Array([0, 1]); // not a serialized private key
	try {
	const factory = /** @type {!KeyManager.PrivateKeyFactory} */ (
	manager.getKeyFactory());
	factory.getPublicKeyData(privateKey);
	} catch (e) {
	assertEquals(ExceptionText.invalidSerializedKey(), e.toString());
	}
	},

	async testGetPublicKeyData_shouldWork() {
	const keyFormat = createKeyFormat();
	const manager = new EcdsaPrivateKeyManager();

	const privateKey = /** @type{!PbEcdsaPrivateKey} */ (
	await manager.getKeyFactory().newKey(keyFormat));
	const factory =
	/** @type {!KeyManager.PrivateKeyFactory} */ (manager.getKeyFactory());
	const publicKeyData =
	factory.getPublicKeyData(privateKey.serializeBinary());

	assertEquals(PUBLIC_KEY_TYPE, publicKeyData.getTypeUrl());
	assertEquals(PUBLIC_KEY_MATERIAL_TYPE, publicKeyData.getKeyMaterialType());
	const publicKey =
	PbEcdsaPublicKey.deserializeBinary(publicKeyData.getValue());
	assertObjectEquals(
	privateKey.getPublicKey().getVersion(), publicKey.getVersion());
	assertObjectEquals(
	privateKey.getPublicKey().getParams(), publicKey.getParams());
	assertObjectEquals(privateKey.getPublicKey().getX(), publicKey.getX());
	assertObjectEquals(privateKey.getPublicKey().getY(), publicKey.getY());
	},

	async testGetPrimitive_unsupportedPrimitiveType() {
	const manager = new EcdsaPrivateKeyManager();
	const keyFormat = createKeyFormat();
	const key = await manager.getKeyFactory().newKey(keyFormat);

	try {
	await manager.getPrimitive(PublicKeyVerify, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unsupportedPrimitive(), e.toString());
	}
	},

	async testGetPrimitive_unsupportedKeyDataType() {
	const manager = new EcdsaPrivateKeyManager();
	const keyFormat = createKeyFormat();
	const keyData =
	(await manager.getKeyFactory().newKeyData(keyFormat.serializeBinary()))
	.setTypeUrl('unsupported_key_type_url');

	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, keyData);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(
	ExceptionText.unsupportedKeyType(keyData.getTypeUrl()), e.toString());
	}
	},

	async testGetPrimitive_unsupportedKeyType() {
	const manager = new EcdsaPrivateKeyManager();
	let key = new PbEcdsaPublicKey();

	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unsupportedKeyType(), e.toString());
	}
	},

	async testGetPrimitive_highVersion() {
	const manager = new EcdsaPrivateKeyManager();
	const version = manager.getVersion() + 1;
	const keyFormat = createKeyFormat();
	const key =
	(await manager.getKeyFactory().newKey(keyFormat)).setVersion(version);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.versionOutOfBounds(), e.toString());
	}
	},

	async testGetPrimitive_invalidParams() {
	const manager = new EcdsaPrivateKeyManager();
	const keyFormat = createKeyFormat();
	const key = await manager.getKeyFactory().newKey(keyFormat);

	// Unknown encoding.
	key.getPublicKey().getParams().setEncoding(
	PbEcdsaSignatureEncoding.UNKNOWN_ENCODING);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unknownEncoding(), e.toString());
	}
	key.getPublicKey().getParams().setEncoding(PbEcdsaSignatureEncoding.DER);

	// Unknown hash.
	key.getPublicKey().getParams().setHashType(PbHashType.UNKNOWN_HASH);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unknownHash(), e.toString());
	}
	key.getPublicKey().getParams().setHashType(PbHashType.SHA256);

	// Unknown curve.
	key.getPublicKey().getParams().setCurve(PbEllipticCurveType.UNKNOWN_CURVE);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(ExceptionText.unknownCurve(), e.toString());
	}

	// Bad hash + curve combinations.
	key.getPublicKey().getParams().setCurve(PbEllipticCurveType.NIST_P384);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(
	'CustomError: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256',
	e.toString());
	}

	key.getPublicKey().getParams().setCurve(PbEllipticCurveType.NIST_P521);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e) {
	assertEquals(
	'CustomError: expected SHA-512 (because curve is P-521) but got SHA-256',
	e.toString());
	}
	},

	async testGetPrimitive_invalidSerializedKey() {
	const manager = new EcdsaPrivateKeyManager();
	const keyFormat = createKeyFormat();
	const keyData =
	await manager.getKeyFactory().newKeyData(keyFormat.serializeBinary());


	for (let i = 0; i < 2; ++i) {
	// Set the value of keyData to something which is not a serialization of a
	// proper key.
	keyData.setValue(new Uint8Array(i));
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, keyData);
	fail('An exception should be thrown ' + i.toString());
	} catch (e) {
	assertEquals(ExceptionText.invalidSerializedKey(), e.toString());
	}
	}
	},

	async testGetPrimitive_fromKey() {
	const keyFormats = createTestSetOfKeyFormats();
	const privateKeyManager = new EcdsaPrivateKeyManager();
	const publicKeyManager = new EcdsaPublicKeyManager();

	for (let keyFormat of keyFormats) {
	const key = await privateKeyManager.getKeyFactory().newKey(keyFormat);

	const /** !PublicKeyVerify */ publicKeyVerify =
	await publicKeyManager.getPrimitive(
	PUBLIC_KEY_MANAGER_PRIMITIVE, key.getPublicKey());
	const /** !PublicKeySign */ publicKeySign =
	await privateKeyManager.getPrimitive(
	PRIVATE_KEY_MANAGER_PRIMITIVE, key);

	const data = Random.randBytes(10);
	const signature = await publicKeySign.sign(data);
	const isValid = await publicKeyVerify.verify(signature, data);

	assertTrue(isValid);
	}
	},

	async testGetPrimitive_fromKeyData() {
	const keyFormats = createTestSetOfKeyFormats();
	const privateKeyManager = new EcdsaPrivateKeyManager();
	const publicKeyManager = new EcdsaPublicKeyManager();

	for (let keyFormat of keyFormats) {
	const serializedKeyFormat = keyFormat.serializeBinary();
	const keyData = await privateKeyManager.getKeyFactory().newKeyData(
	serializedKeyFormat);
	const factory = /** @type {!KeyManager.PrivateKeyFactory} */ (
	privateKeyManager.getKeyFactory());
	const publicKeyData = factory.getPublicKeyData(keyData.getValue_asU8());

	const /** !PublicKeyVerify */ publicKeyVerify =
	await publicKeyManager.getPrimitive(
	PUBLIC_KEY_MANAGER_PRIMITIVE, publicKeyData);
	const /** !PublicKeySign */ publicKeySign =
	await privateKeyManager.getPrimitive(
	PRIVATE_KEY_MANAGER_PRIMITIVE, keyData);

	const data = Random.randBytes(10);
	const signature = await publicKeySign.sign(data);
	const isValid = await publicKeyVerify.verify(signature, data);

	assertTrue(isValid);
	}
	},

	testDoesSupport() {
	const manager = new EcdsaPrivateKeyManager();
	assertTrue(manager.doesSupport(PRIVATE_KEY_TYPE));
	},

	testGetKeyType() {
	const manager = new EcdsaPrivateKeyManager();
	assertEquals(PRIVATE_KEY_TYPE, manager.getKeyType());
	},

	testGetPrimitiveType() {
	const manager = new EcdsaPrivateKeyManager();
	assertEquals(PRIVATE_KEY_MANAGER_PRIMITIVE, manager.getPrimitiveType());
	},

	testGetVersion() {
	const manager = new EcdsaPrivateKeyManager();
	assertEquals(VERSION, manager.getVersion());
	},
	});

	// Helper classes and functions
	class ExceptionText {
	/** @return {string} */
	static nullKeyFormat() {
	return 'CustomError: Key format has to be non-null.';
	}

	/** @return {string} */
	static invalidSerializedKeyFormat() {
	return 'CustomError: Input cannot be parsed as ' + PRIVATE_KEY_TYPE +
	' key format proto.';
	}

	/** @return {string} */
	static unsupportedPrimitive() {
	return 'CustomError: Requested primitive type which is not supported by ' +
	'this key manager.';
	}

	/** @return {string} */
	static unsupportedKeyFormat() {
	return 'CustomError: Expected ' + PRIVATE_KEY_TYPE + ' key format proto.';
	}

	/**
	* @param {string=} opt_requestedKeyType
	* @return {string}
	*/
	static unsupportedKeyType(opt_requestedKeyType) {
	const prefix = 'CustomError: Key type';
	const suffix =
	'is not supported. This key manager supports ' + PRIVATE_KEY_TYPE + '.';
	if (opt_requestedKeyType) {
	return prefix + ' ' + opt_requestedKeyType + ' ' + suffix;
	} else {
	return prefix + ' ' + suffix;
	}
	}

	/** @return {string} */
	static unknownEncoding() {
	return 'CustomError: Invalid public key - missing signature encoding.';
	}

	/** @return {string} */
	static unknownHash() {
	return 'CustomError: Unknown hash type.';
	}

	/** @return {string} */
	static unknownCurve() {
	return 'CustomError: Unknown curve type.';
	}

	/** @return {string} */
	static versionOutOfBounds() {
	return 'CustomError: Version is out of bound, must be between 0 and ' +
	VERSION + '.';
	}

	/** @return {string} */
	static invalidKeyFormatMissingParams() {
	return 'CustomError: Invalid key format - missing params.';
	}

	/** @return {string} */
	static invalidSerializedKey() {
	return 'CustomError: Input cannot be parsed as ' + PRIVATE_KEY_TYPE +
	' key-proto.';
	}
	}

	/**
	* @param {?PbEllipticCurveType} curveType
	* @param {?PbHashType} hashType
	* @param {?PbEcdsaSignatureEncoding} encoding
	*
	* @return {!PbEcdsaParams}
	*/
	const createParams = function(curveType, hashType, encoding) {
	const params =
	new PbEcdsaParams().setCurve(curveType).setHashType(hashType).setEncoding(
	encoding);

	return params;
	};

	/**
	* @param {?PbEllipticCurveType=} opt_curveType (default: NIST_P256)
	* @param {?PbHashType=} opt_hashType (default: SHA256)
	* @param {?PbEcdsaSignatureEncoding=} opt_encodingType (default: DER)
	*
	* @return {!PbEcdsaKeyFormat}
	*/
	const createKeyFormat = function(
	opt_curveType = PbEllipticCurveType.NIST_P256,
	opt_hashType = PbHashType.SHA256,
	opt_encodingType = PbEcdsaSignatureEncoding.DER) {
	const keyFormat = new PbEcdsaKeyFormat().setParams(
	createParams(opt_curveType, opt_hashType, opt_encodingType));
	return keyFormat;
	};

	// Create set of key formats with all possible predefined/supported parameters.
	/** @return {!Array<!PbEcdsaKeyFormat>} */
	const createTestSetOfKeyFormats = function() {
	const /** !Array<!PbEcdsaKeyFormat> */ keyFormats = [];
	keyFormats.push(createKeyFormat(
	PbEllipticCurveType.NIST_P256, PbHashType.SHA256,
	PbEcdsaSignatureEncoding.DER));
	keyFormats.push(createKeyFormat(
	PbEllipticCurveType.NIST_P256, PbHashType.SHA256,
	PbEcdsaSignatureEncoding.IEEE_P1363));
	keyFormats.push(createKeyFormat(
	PbEllipticCurveType.NIST_P384, PbHashType.SHA512,
	PbEcdsaSignatureEncoding.DER));
	keyFormats.push(createKeyFormat(
	PbEllipticCurveType.NIST_P384, PbHashType.SHA512,
	PbEcdsaSignatureEncoding.IEEE_P1363));
	keyFormats.push(createKeyFormat(
	PbEllipticCurveType.NIST_P521, PbHashType.SHA512,
	PbEcdsaSignatureEncoding.DER));
	keyFormats.push(createKeyFormat(
	PbEllipticCurveType.NIST_P521, PbHashType.SHA512,
	PbEcdsaSignatureEncoding.IEEE_P1363));
	return keyFormats;
	};