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

 /**
  * @license
  * Copyright 2020 Google LLC
  * SPDX-License-Identifier: Apache-2.0
  */

 import {PbEcdsaKeyFormat, PbEcdsaParams, PbEcdsaPrivateKey, PbEcdsaPublicKey, PbEcdsaSignatureEncoding, PbEllipticCurveType, PbHashType, PbKeyData} from '../internal/proto';
 import * as Registry from '../internal/registry';
 import * as Random from '../subtle/random';
 import {assertExists, assertInstanceof} from '../testing/internal/test_utils';

 import {EcdsaPrivateKeyManager} from './ecdsa_private_key_manager';
 import {EcdsaPublicKeyManager} from './ecdsa_public_key_manager';
 import {PublicKeySign} from './internal/public_key_sign';
 import {PublicKeyVerify} from './internal/public_key_verify';

 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;

 describe('ecdsa private key manager test', function() {
   beforeEach(function() {
     // Use a generous promise timeout for running continuously.
     jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000 * 1000;  // 1000s
   });

   afterEach(function() {
     Registry.reset();
     // Reset the promise timeout to default value.
     jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000;  // 1s
   });

   it('new key, invalid serialized key format', async function() {
     const invalidSerializedKeyFormat = new Uint8Array(0);
     const manager = new EcdsaPrivateKeyManager();

     try {
       await manager.getKeyFactory().newKey(invalidSerializedKeyFormat);
       fail('An exception should be thrown.');
     } catch (e: any) {
       expect(e.toString()).toBe(ExceptionText.invalidSerializedKeyFormat());
     }
   });

   it('new key, unsupported key format proto', async function() {
     const unsupportedKeyFormatProto = new PbEcdsaParams();
     const manager = new EcdsaPrivateKeyManager();

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

   it('new key, invalid format, missing params', async function() {
     const invalidFormat = new PbEcdsaKeyFormat();
     const manager = new EcdsaPrivateKeyManager();

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

   it('new key, invalid format, invalid params', async function() {
     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: any) {
       expect(e.toString()).toBe(ExceptionText.unknownEncoding());
     }
     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: any) {
       expect(e.toString()).toBe(ExceptionText.unknownHash());
     }
     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: any) {
       expect(e.toString()).toBe(ExceptionText.unknownCurve());
     }

     // Bad hash + curve combinations.
     invalidFormat.getParams()?.setCurve(PbEllipticCurveType.NIST_P384);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e: any) {
       expect(e.toString())
           .toBe(
               'SecurityException: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256');
     }
     invalidFormat.getParams()?.setCurve(PbEllipticCurveType.NIST_P521);
     try {
       await manager.getKeyFactory().newKey(invalidFormat);
       fail('An exception should be thrown.');
     } catch (e: any) {
       expect(e.toString())
           .toBe(
               'SecurityException: expected SHA-512 (because curve is P-521) but got SHA-256');
     }
   });

   it('new key, via key format', async function() {
     const keyFormats = createTestSetOfKeyFormats();
     const manager = new EcdsaPrivateKeyManager();
     for (const keyFormat of keyFormats) {
       const key = await manager.getKeyFactory().newKey(keyFormat);

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

   it('new key data, invalid serialized key format', async function() {
     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: any) {
         expect(e.toString()).toBe(ExceptionText.invalidSerializedKeyFormat());
         continue;
       }
     }
   });

   it('new key data, from valid key format', async function() {
     const keyFormats = createTestSetOfKeyFormats();
     const manager = new EcdsaPrivateKeyManager();
     for (const keyFormat of keyFormats) {
       const serializedKeyFormat = keyFormat.serializeBinary();
       const keyData =
           await manager.getKeyFactory().newKeyData(serializedKeyFormat);
       expect(keyData.getTypeUrl()).toBe(PRIVATE_KEY_TYPE);
       expect(keyData.getKeyMaterialType()).toBe(PRIVATE_KEY_MATERIAL_TYPE);

       const key = PbEcdsaPrivateKey.deserializeBinary(keyData.getValue_asU8());
       expect(key.getPublicKey()?.getParams()).toEqual(keyFormat.getParams());
       // The keys are tested more in tests for getPrimitive method below, where
       // the primitive based on the created key is tested.
     }
   });

   it('get public key data, invalid private key serialization', function() {
     const manager = new EcdsaPrivateKeyManager();

     const privateKey = new Uint8Array([0, 1]);  // not a serialized private key
     try {
       const factory = manager.getKeyFactory();
       factory.getPublicKeyData(privateKey);
     } catch (e: any) {
       expect(e.toString()).toBe(ExceptionText.invalidSerializedKey());
     }
   });

   it('get public key data, should work', async function() {
     const keyFormat = createKeyFormat();
     const manager = new EcdsaPrivateKeyManager();
     const privateKey = await manager.getKeyFactory().newKey(keyFormat);
     const factory = (manager.getKeyFactory());
     const publicKeyData =
         factory.getPublicKeyData(privateKey.serializeBinary());

     expect(publicKeyData.getTypeUrl()).toBe(PUBLIC_KEY_TYPE);
     expect(publicKeyData.getKeyMaterialType()).toBe(PUBLIC_KEY_MATERIAL_TYPE);
     const publicKey =
         PbEcdsaPublicKey.deserializeBinary(publicKeyData.getValue_asU8());
     expect(publicKey.getVersion())
         .toEqual(privateKey.getPublicKey()!.getVersion());
     expect(publicKey.getParams())
         .toEqual(privateKey.getPublicKey()!.getParams());
     expect(publicKey.getX_asU8())
         .toEqual(privateKey.getPublicKey()!.getX_asU8());
     expect(publicKey.getY_asU8())
         .toEqual(privateKey.getPublicKey()!.getY_asU8());
   });

   it('get primitive, unsupported key data type', async function() {
     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: any) {
       expect(e.toString())
           .toBe(ExceptionText.unsupportedKeyType(keyData.getTypeUrl()));
     }
   });

   it('get primitive, unsupported key type', async function() {
     const manager = new EcdsaPrivateKeyManager();
     const key = new PbEcdsaPublicKey();

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

   it('get primitive, high version', async function() {
     const manager = new EcdsaPrivateKeyManager();
     const version = manager.getVersion() + 1;
     const keyFormat = createKeyFormat();
     const key =
         assertInstanceof(
             await manager.getKeyFactory().newKey(keyFormat), PbEcdsaPrivateKey)
             .setVersion(version);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e: any) {
       expect(e.toString()).toBe(ExceptionText.versionOutOfBounds());
     }
   });

   it('get primitive, invalid params', async function() {
     const manager = new EcdsaPrivateKeyManager();
     const keyFormat = createKeyFormat();
     const key = assertInstanceof(
         await manager.getKeyFactory().newKey(keyFormat), PbEcdsaPrivateKey);

     // 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: any) {
       expect(e.toString()).toBe(ExceptionText.unknownEncoding());
     }
     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: any) {
       expect(e.toString()).toBe(ExceptionText.unknownHash());
     }
     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: any) {
       expect(e.toString()).toBe(ExceptionText.unknownCurve());
     }

     // 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: any) {
       expect(e.toString())
           .toBe(
               'SecurityException: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256');
     }
     key.getPublicKey()?.getParams()?.setCurve(PbEllipticCurveType.NIST_P521);
     try {
       await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
       fail('An exception should be thrown.');
     } catch (e: any) {
       expect(e.toString())
           .toBe(
               'SecurityException: expected SHA-512 (because curve is P-521) but got SHA-256');
     }
   });

   it('get primitive, invalid serialized key', async function() {
     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: any) {
         expect(e.toString()).toBe(ExceptionText.invalidSerializedKey());
       }
     }
   });

   it('get primitive, from key', async function() {
     const keyFormats = createTestSetOfKeyFormats();
     const privateKeyManager = new EcdsaPrivateKeyManager();
     const publicKeyManager = new EcdsaPublicKeyManager();
     for (const keyFormat of keyFormats) {
       const key = assertInstanceof(
           await privateKeyManager.getKeyFactory().newKey(keyFormat),
           PbEcdsaPrivateKey);
       const publicKeyVerify: PublicKeyVerify =
           assertExists(await publicKeyManager.getPrimitive(
               PUBLIC_KEY_MANAGER_PRIMITIVE, assertExists(key.getPublicKey())));
       const publicKeySign: PublicKeySign =
           assertExists(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);

       expect(isValid).toBe(true);
     }
   });

   it('get primitive, from key data', async function() {
     const keyFormats = createTestSetOfKeyFormats();
     const privateKeyManager = new EcdsaPrivateKeyManager();
     const publicKeyManager = new EcdsaPublicKeyManager();

     for (const keyFormat of keyFormats) {
       const serializedKeyFormat = keyFormat.serializeBinary();
       const keyData = await privateKeyManager.getKeyFactory().newKeyData(
           serializedKeyFormat);
       const factory = privateKeyManager.getKeyFactory();
       const publicKeyData = factory.getPublicKeyData(keyData.getValue_asU8());

       const publicKeyVerify: PublicKeyVerify =
           assertExists(await publicKeyManager.getPrimitive(
               PUBLIC_KEY_MANAGER_PRIMITIVE, publicKeyData));
       const publicKeySign: PublicKeySign =
           assertExists(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);

       expect(isValid).toBe(true);
     }
   });

   it('does support', function() {
     const manager = new EcdsaPrivateKeyManager();
     expect(manager.doesSupport(PRIVATE_KEY_TYPE)).toBe(true);
   });

   it('get key type', function() {
     const manager = new EcdsaPrivateKeyManager();
     expect(manager.getKeyType()).toBe(PRIVATE_KEY_TYPE);
   });

   it('get primitive type', function() {
     const manager = new EcdsaPrivateKeyManager();
     expect(manager.getPrimitiveType()).toBe(PRIVATE_KEY_MANAGER_PRIMITIVE);
   });

   it('get version', function() {
     const manager = new EcdsaPrivateKeyManager();
     expect(manager.getVersion()).toBe(VERSION);
   });
 });

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

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

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

   static unsupportedKeyFormat(): string {
     return 'SecurityException: Expected ' + PRIVATE_KEY_TYPE +
         ' key format proto.';
   }

   static unsupportedKeyType(opt_requestedKeyType?: string): string {
     const prefix = 'SecurityException: 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;
     }
   }

   static unknownEncoding(): string {
     return 'SecurityException: Invalid public key - missing signature encoding.';
   }

   static unknownHash(): string {
     return 'SecurityException: Unknown hash type.';
   }

   static unknownCurve(): string {
     return 'SecurityException: Unknown curve type.';
   }

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

   static invalidKeyFormatMissingParams(): string {
     return 'SecurityException: Invalid key format - missing params.';
   }

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

 function createParams(
     curveType: PbEllipticCurveType, hashType: PbHashType,
     encoding: PbEcdsaSignatureEncoding): PbEcdsaParams {
   const params =
       new PbEcdsaParams().setCurve(curveType).setHashType(hashType).setEncoding(
           encoding);

   return params;
 }

 function createKeyFormat(
     opt_curveType: PbEllipticCurveType = PbEllipticCurveType.NIST_P256,
     opt_hashType: PbHashType = PbHashType.SHA256,
     opt_encodingType: PbEcdsaSignatureEncoding =
         PbEcdsaSignatureEncoding.DER): PbEcdsaKeyFormat {
   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.
  */
 function createTestSetOfKeyFormats(): PbEcdsaKeyFormat[] {
   const keyFormats: PbEcdsaKeyFormat[] = [];
   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;
 }
	/**
	* @license
	* Copyright 2020 Google LLC
	* SPDX-License-Identifier: Apache-2.0
	*/

	import {PbEcdsaKeyFormat, PbEcdsaParams, PbEcdsaPrivateKey, PbEcdsaPublicKey, PbEcdsaSignatureEncoding, PbEllipticCurveType, PbHashType, PbKeyData} from '../internal/proto';
	import * as Registry from '../internal/registry';
	import * as Random from '../subtle/random';
	import {assertExists, assertInstanceof} from '../testing/internal/test_utils';

	import {EcdsaPrivateKeyManager} from './ecdsa_private_key_manager';
	import {EcdsaPublicKeyManager} from './ecdsa_public_key_manager';
	import {PublicKeySign} from './internal/public_key_sign';
	import {PublicKeyVerify} from './internal/public_key_verify';

	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;

	describe('ecdsa private key manager test', function() {
	beforeEach(function() {
	// Use a generous promise timeout for running continuously.
	jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000 * 1000; // 1000s
	});

	afterEach(function() {
	Registry.reset();
	// Reset the promise timeout to default value.
	jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000; // 1s
	});

	it('new key, invalid serialized key format', async function() {
	const invalidSerializedKeyFormat = new Uint8Array(0);
	const manager = new EcdsaPrivateKeyManager();

	try {
	await manager.getKeyFactory().newKey(invalidSerializedKeyFormat);
	fail('An exception should be thrown.');
	} catch (e: any) {
	expect(e.toString()).toBe(ExceptionText.invalidSerializedKeyFormat());
	}
	});

	it('new key, unsupported key format proto', async function() {
	const unsupportedKeyFormatProto = new PbEcdsaParams();
	const manager = new EcdsaPrivateKeyManager();

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

	it('new key, invalid format, missing params', async function() {
	const invalidFormat = new PbEcdsaKeyFormat();
	const manager = new EcdsaPrivateKeyManager();

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

	it('new key, invalid format, invalid params', async function() {
	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: any) {
	expect(e.toString()).toBe(ExceptionText.unknownEncoding());
	}
	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: any) {
	expect(e.toString()).toBe(ExceptionText.unknownHash());
	}
	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: any) {
	expect(e.toString()).toBe(ExceptionText.unknownCurve());
	}

	// Bad hash + curve combinations.
	invalidFormat.getParams()?.setCurve(PbEllipticCurveType.NIST_P384);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e: any) {
	expect(e.toString())
	.toBe(
	'SecurityException: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256');
	}
	invalidFormat.getParams()?.setCurve(PbEllipticCurveType.NIST_P521);
	try {
	await manager.getKeyFactory().newKey(invalidFormat);
	fail('An exception should be thrown.');
	} catch (e: any) {
	expect(e.toString())
	.toBe(
	'SecurityException: expected SHA-512 (because curve is P-521) but got SHA-256');
	}
	});

	it('new key, via key format', async function() {
	const keyFormats = createTestSetOfKeyFormats();
	const manager = new EcdsaPrivateKeyManager();
	for (const keyFormat of keyFormats) {
	const key = await manager.getKeyFactory().newKey(keyFormat);

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

	it('new key data, invalid serialized key format', async function() {
	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: any) {
	expect(e.toString()).toBe(ExceptionText.invalidSerializedKeyFormat());
	continue;
	}
	}
	});

	it('new key data, from valid key format', async function() {
	const keyFormats = createTestSetOfKeyFormats();
	const manager = new EcdsaPrivateKeyManager();
	for (const keyFormat of keyFormats) {
	const serializedKeyFormat = keyFormat.serializeBinary();
	const keyData =
	await manager.getKeyFactory().newKeyData(serializedKeyFormat);
	expect(keyData.getTypeUrl()).toBe(PRIVATE_KEY_TYPE);
	expect(keyData.getKeyMaterialType()).toBe(PRIVATE_KEY_MATERIAL_TYPE);

	const key = PbEcdsaPrivateKey.deserializeBinary(keyData.getValue_asU8());
	expect(key.getPublicKey()?.getParams()).toEqual(keyFormat.getParams());
	// The keys are tested more in tests for getPrimitive method below, where
	// the primitive based on the created key is tested.
	}
	});

	it('get public key data, invalid private key serialization', function() {
	const manager = new EcdsaPrivateKeyManager();

	const privateKey = new Uint8Array([0, 1]); // not a serialized private key
	try {
	const factory = manager.getKeyFactory();
	factory.getPublicKeyData(privateKey);
	} catch (e: any) {
	expect(e.toString()).toBe(ExceptionText.invalidSerializedKey());
	}
	});

	it('get public key data, should work', async function() {
	const keyFormat = createKeyFormat();
	const manager = new EcdsaPrivateKeyManager();
	const privateKey = await manager.getKeyFactory().newKey(keyFormat);
	const factory = (manager.getKeyFactory());
	const publicKeyData =
	factory.getPublicKeyData(privateKey.serializeBinary());

	expect(publicKeyData.getTypeUrl()).toBe(PUBLIC_KEY_TYPE);
	expect(publicKeyData.getKeyMaterialType()).toBe(PUBLIC_KEY_MATERIAL_TYPE);
	const publicKey =
	PbEcdsaPublicKey.deserializeBinary(publicKeyData.getValue_asU8());
	expect(publicKey.getVersion())
	.toEqual(privateKey.getPublicKey()!.getVersion());
	expect(publicKey.getParams())
	.toEqual(privateKey.getPublicKey()!.getParams());
	expect(publicKey.getX_asU8())
	.toEqual(privateKey.getPublicKey()!.getX_asU8());
	expect(publicKey.getY_asU8())
	.toEqual(privateKey.getPublicKey()!.getY_asU8());
	});

	it('get primitive, unsupported key data type', async function() {
	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: any) {
	expect(e.toString())
	.toBe(ExceptionText.unsupportedKeyType(keyData.getTypeUrl()));
	}
	});

	it('get primitive, unsupported key type', async function() {
	const manager = new EcdsaPrivateKeyManager();
	const key = new PbEcdsaPublicKey();

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

	it('get primitive, high version', async function() {
	const manager = new EcdsaPrivateKeyManager();
	const version = manager.getVersion() + 1;
	const keyFormat = createKeyFormat();
	const key =
	assertInstanceof(
	await manager.getKeyFactory().newKey(keyFormat), PbEcdsaPrivateKey)
	.setVersion(version);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e: any) {
	expect(e.toString()).toBe(ExceptionText.versionOutOfBounds());
	}
	});

	it('get primitive, invalid params', async function() {
	const manager = new EcdsaPrivateKeyManager();
	const keyFormat = createKeyFormat();
	const key = assertInstanceof(
	await manager.getKeyFactory().newKey(keyFormat), PbEcdsaPrivateKey);

	// 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: any) {
	expect(e.toString()).toBe(ExceptionText.unknownEncoding());
	}
	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: any) {
	expect(e.toString()).toBe(ExceptionText.unknownHash());
	}
	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: any) {
	expect(e.toString()).toBe(ExceptionText.unknownCurve());
	}

	// 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: any) {
	expect(e.toString())
	.toBe(
	'SecurityException: expected SHA-384 or SHA-512 (because curve is P-384) but got SHA-256');
	}
	key.getPublicKey()?.getParams()?.setCurve(PbEllipticCurveType.NIST_P521);
	try {
	await manager.getPrimitive(PRIVATE_KEY_MANAGER_PRIMITIVE, key);
	fail('An exception should be thrown.');
	} catch (e: any) {
	expect(e.toString())
	.toBe(
	'SecurityException: expected SHA-512 (because curve is P-521) but got SHA-256');
	}
	});

	it('get primitive, invalid serialized key', async function() {
	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: any) {
	expect(e.toString()).toBe(ExceptionText.invalidSerializedKey());
	}
	}
	});

	it('get primitive, from key', async function() {
	const keyFormats = createTestSetOfKeyFormats();
	const privateKeyManager = new EcdsaPrivateKeyManager();
	const publicKeyManager = new EcdsaPublicKeyManager();
	for (const keyFormat of keyFormats) {
	const key = assertInstanceof(
	await privateKeyManager.getKeyFactory().newKey(keyFormat),
	PbEcdsaPrivateKey);
	const publicKeyVerify: PublicKeyVerify =
	assertExists(await publicKeyManager.getPrimitive(
	PUBLIC_KEY_MANAGER_PRIMITIVE, assertExists(key.getPublicKey())));
	const publicKeySign: PublicKeySign =
	assertExists(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);

	expect(isValid).toBe(true);
	}
	});

	it('get primitive, from key data', async function() {
	const keyFormats = createTestSetOfKeyFormats();
	const privateKeyManager = new EcdsaPrivateKeyManager();
	const publicKeyManager = new EcdsaPublicKeyManager();

	for (const keyFormat of keyFormats) {
	const serializedKeyFormat = keyFormat.serializeBinary();
	const keyData = await privateKeyManager.getKeyFactory().newKeyData(
	serializedKeyFormat);
	const factory = privateKeyManager.getKeyFactory();
	const publicKeyData = factory.getPublicKeyData(keyData.getValue_asU8());

	const publicKeyVerify: PublicKeyVerify =
	assertExists(await publicKeyManager.getPrimitive(
	PUBLIC_KEY_MANAGER_PRIMITIVE, publicKeyData));
	const publicKeySign: PublicKeySign =
	assertExists(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);

	expect(isValid).toBe(true);
	}
	});

	it('does support', function() {
	const manager = new EcdsaPrivateKeyManager();
	expect(manager.doesSupport(PRIVATE_KEY_TYPE)).toBe(true);
	});

	it('get key type', function() {
	const manager = new EcdsaPrivateKeyManager();
	expect(manager.getKeyType()).toBe(PRIVATE_KEY_TYPE);
	});

	it('get primitive type', function() {
	const manager = new EcdsaPrivateKeyManager();
	expect(manager.getPrimitiveType()).toBe(PRIVATE_KEY_MANAGER_PRIMITIVE);
	});

	it('get version', function() {
	const manager = new EcdsaPrivateKeyManager();
	expect(manager.getVersion()).toBe(VERSION);
	});
	});

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

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

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

	static unsupportedKeyFormat(): string {
	return 'SecurityException: Expected ' + PRIVATE_KEY_TYPE +
	' key format proto.';
	}

	static unsupportedKeyType(opt_requestedKeyType?: string): string {
	const prefix = 'SecurityException: 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;
	}
	}

	static unknownEncoding(): string {
	return 'SecurityException: Invalid public key - missing signature encoding.';
	}

	static unknownHash(): string {
	return 'SecurityException: Unknown hash type.';
	}

	static unknownCurve(): string {
	return 'SecurityException: Unknown curve type.';
	}

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

	static invalidKeyFormatMissingParams(): string {
	return 'SecurityException: Invalid key format - missing params.';
	}

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

	function createParams(
	curveType: PbEllipticCurveType, hashType: PbHashType,
	encoding: PbEcdsaSignatureEncoding): PbEcdsaParams {
	const params =
	new PbEcdsaParams().setCurve(curveType).setHashType(hashType).setEncoding(
	encoding);

	return params;
	}

	function createKeyFormat(
	opt_curveType: PbEllipticCurveType = PbEllipticCurveType.NIST_P256,
	opt_hashType: PbHashType = PbHashType.SHA256,
	opt_encodingType: PbEcdsaSignatureEncoding =
	PbEcdsaSignatureEncoding.DER): PbEcdsaKeyFormat {
	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.
	*/
	function createTestSetOfKeyFormats(): PbEcdsaKeyFormat[] {
	const keyFormats: PbEcdsaKeyFormat[] = [];
	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;
	}