UNPKG

tink-crypto

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A multi-language, cross-platform library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

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/** * @license * Copyright 2020 Google LLC * SPDX-License-Identifier: Apache-2.0 */ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) { function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); } return new (P || (P = Promise))(function (resolve, reject) { function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } } function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } } function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); } step((generator = generator.apply(thisArg, _arguments || [])).next()); }); }; import { SecurityException } from '../exception/security_exception'; import { PbEciesAeadHkdfPublicKey, PbKeyData } from '../internal/proto'; import { bytesAsU8 } from '../internal/proto_shims'; import * as Util from '../internal/util'; import * as eciesAeadHkdfHybridEncrypt from '../subtle/ecies_aead_hkdf_hybrid_encrypt'; import * as EciesAeadHkdfUtil from './ecies_aead_hkdf_util'; import * as EciesAeadHkdfValidators from './ecies_aead_hkdf_validators'; import { HybridEncrypt } from './internal/hybrid_encrypt'; import { RegistryEciesAeadHkdfDemHelper } from './registry_ecies_aead_hkdf_dem_helper'; /** * @final */ class EciesAeadHkdfPublicKeyFactory { newKey(keyFormat) { throw new SecurityException('This operation is not supported for public keys. ' + 'Use EciesAeadHkdfPrivateKeyManager to generate new keys.'); } newKeyData(serializedKeyFormat) { throw new SecurityException('This operation is not supported for public keys. ' + 'Use EciesAeadHkdfPrivateKeyManager to generate new keys.'); } } /** * @final */ export class EciesAeadHkdfPublicKeyManager { constructor() { this.keyFactory = new EciesAeadHkdfPublicKeyFactory(); } getPrimitive(primitiveType, key) { return __awaiter(this, void 0, void 0, function* () { if (primitiveType !== this.getPrimitiveType()) { throw new SecurityException('Requested primitive type which is not ' + 'supported by this key manager.'); } const keyProto = EciesAeadHkdfPublicKeyManager.getKeyProto(key); EciesAeadHkdfValidators.validatePublicKey(keyProto, this.getVersion()); const recepientPublicKey = EciesAeadHkdfUtil.getJsonWebKeyFromProto(keyProto); const params = keyProto.getParams(); const demParams = params.getDemParams(); if (!demParams) { throw new SecurityException('DEM params not set'); } const keyTemplate = demParams.getAeadDem(); const demHelper = new RegistryEciesAeadHkdfDemHelper(keyTemplate); const pointFormat = Util.pointFormatProtoToSubtle(params.getEcPointFormat()); const kemParams = params.getKemParams(); if (!kemParams) { throw new SecurityException('KEM params not set'); } const hkdfHash = Util.hashTypeProtoToString(kemParams.getHkdfHashType()); const hkdfSalt = bytesAsU8(kemParams.getHkdfSalt()); return eciesAeadHkdfHybridEncrypt.fromJsonWebKey(recepientPublicKey, hkdfHash, pointFormat, demHelper, hkdfSalt); }); } doesSupport(keyType) { return keyType === this.getKeyType(); } getKeyType() { return EciesAeadHkdfPublicKeyManager.KEY_TYPE; } getPrimitiveType() { return EciesAeadHkdfPublicKeyManager.SUPPORTED_PRIMITIVE; } getVersion() { return EciesAeadHkdfPublicKeyManager.VERSION; } getKeyFactory() { return this.keyFactory; } static getKeyProto(keyMaterial) { if (keyMaterial instanceof PbKeyData) { return EciesAeadHkdfPublicKeyManager.getKeyProtoFromKeyData(keyMaterial); } if (keyMaterial instanceof PbEciesAeadHkdfPublicKey) { return keyMaterial; } throw new SecurityException('Key type is not supported. This key manager supports ' + EciesAeadHkdfPublicKeyManager.KEY_TYPE + '.'); } static getKeyProtoFromKeyData(keyData) { if (keyData.getTypeUrl() !== EciesAeadHkdfPublicKeyManager.KEY_TYPE) { throw new SecurityException('Key type ' + keyData.getTypeUrl() + ' is not supported. This key ' + 'manager supports ' + EciesAeadHkdfPublicKeyManager.KEY_TYPE + '.'); } let key; try { key = PbEciesAeadHkdfPublicKey.deserializeBinary(keyData.getValue()); } catch (e) { throw new SecurityException('Input cannot be parsed as ' + EciesAeadHkdfPublicKeyManager.KEY_TYPE + ' key-proto.'); } if (!key.getParams() || !key.getX() || !key.getY()) { throw new SecurityException('Input cannot be parsed as ' + EciesAeadHkdfPublicKeyManager.KEY_TYPE + ' key-proto.'); } return key; } } EciesAeadHkdfPublicKeyManager.KEY_TYPE = 'type.googleapis.com/google.crypto.tink.EciesAeadHkdfPublicKey'; EciesAeadHkdfPublicKeyManager.SUPPORTED_PRIMITIVE = HybridEncrypt; EciesAeadHkdfPublicKeyManager.VERSION = 0; //# 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* @license\n * Copyright 2020 Google LLC\n * SPDX-License-Identifier: Apache-2.0\n */\n\nimport {SecurityException} from '../exception/security_exception';\nimport * as KeyManager from '../internal/key_manager';\nimport {PbEciesAeadHkdfParams, PbEciesAeadHkdfPublicKey, PbKeyData, PbKeyTemplate, PbMessage} from '../internal/proto';\nimport {bytesAsU8} from '../internal/proto_shims';\nimport * as Util from '../internal/util';\nimport * as eciesAeadHkdfHybridEncrypt from '../subtle/ecies_aead_hkdf_hybrid_encrypt';\n\nimport * as EciesAeadHkdfUtil from './ecies_aead_hkdf_util';\nimport * as EciesAeadHkdfValidators from './ecies_aead_hkdf_validators';\nimport {HybridEncrypt} from './internal/hybrid_encrypt';\nimport {RegistryEciesAeadHkdfDemHelper} from './registry_ecies_aead_hkdf_dem_helper';\n\n/**\n * @final\n */\nclass EciesAeadHkdfPublicKeyFactory implements KeyManager.KeyFactory {\n  newKey(keyFormat: PbMessage|Uint8Array): never {\n    throw new SecurityException(\n        'This operation is not supported for public keys. ' +\n        'Use EciesAeadHkdfPrivateKeyManager to generate new keys.');\n  }\n\n  newKeyData(serializedKeyFormat: Uint8Array): never {\n    throw new SecurityException(\n        'This operation is not supported for public keys. ' +\n        'Use EciesAeadHkdfPrivateKeyManager to generate new keys.');\n  }\n}\n\n/**\n * @final\n */\nexport class EciesAeadHkdfPublicKeyManager implements\n    KeyManager.KeyManager<HybridEncrypt> {\n  static KEY_TYPE: string =\n      'type.googleapis.com/google.crypto.tink.EciesAeadHkdfPublicKey';\n  private static readonly SUPPORTED_PRIMITIVE = HybridEncrypt;\n  static VERSION: number = 0;\n  keyFactory = new EciesAeadHkdfPublicKeyFactory();\n\n  async getPrimitive(\n      primitiveType: Util.Constructor<HybridEncrypt>,\n      key: PbKeyData|PbMessage) {\n    if (primitiveType !== this.getPrimitiveType()) {\n      throw new SecurityException(\n          'Requested primitive type which is not ' +\n          'supported by this key manager.');\n    }\n    const keyProto = EciesAeadHkdfPublicKeyManager.getKeyProto(key);\n    EciesAeadHkdfValidators.validatePublicKey(keyProto, this.getVersion());\n    const recepientPublicKey =\n        EciesAeadHkdfUtil.getJsonWebKeyFromProto(keyProto);\n    const params = (keyProto.getParams() as PbEciesAeadHkdfParams);\n    const demParams = params.getDemParams();\n    if (!demParams) {\n      throw new SecurityException('DEM params not set');\n    }\n    const keyTemplate = (demParams.getAeadDem() as PbKeyTemplate);\n    const demHelper = new RegistryEciesAeadHkdfDemHelper(keyTemplate);\n    const pointFormat =\n        Util.pointFormatProtoToSubtle(params.getEcPointFormat());\n    const kemParams = params.getKemParams();\n    if (!kemParams) {\n      throw new SecurityException('KEM params not set');\n    }\n    const hkdfHash = Util.hashTypeProtoToString(kemParams.getHkdfHashType());\n    const hkdfSalt = bytesAsU8(kemParams.getHkdfSalt());\n    return eciesAeadHkdfHybridEncrypt.fromJsonWebKey(\n        recepientPublicKey, hkdfHash, pointFormat, demHelper, hkdfSalt);\n  }\n\n  doesSupport(keyType: string) {\n    return keyType === this.getKeyType();\n  }\n\n  getKeyType() {\n    return EciesAeadHkdfPublicKeyManager.KEY_TYPE;\n  }\n\n  getPrimitiveType() {\n    return EciesAeadHkdfPublicKeyManager.SUPPORTED_PRIMITIVE;\n  }\n\n  getVersion() {\n    return EciesAeadHkdfPublicKeyManager.VERSION;\n  }\n\n  getKeyFactory() {\n    return this.keyFactory;\n  }\n\n  private static getKeyProto(keyMaterial: PbKeyData|\n                             PbMessage): PbEciesAeadHkdfPublicKey {\n    if (keyMaterial instanceof PbKeyData) {\n      return EciesAeadHkdfPublicKeyManager.getKeyProtoFromKeyData(keyMaterial);\n    }\n    if (keyMaterial instanceof PbEciesAeadHkdfPublicKey) {\n      return keyMaterial;\n    }\n    throw new SecurityException(\n        'Key type is not supported. This key manager supports ' +\n        EciesAeadHkdfPublicKeyManager.KEY_TYPE + '.');\n  }\n\n  private static getKeyProtoFromKeyData(keyData: PbKeyData):\n      PbEciesAeadHkdfPublicKey {\n    if (keyData.getTypeUrl() !== EciesAeadHkdfPublicKeyManager.KEY_TYPE) {\n      throw new SecurityException(\n          'Key type ' + keyData.getTypeUrl() + ' is not supported. This key ' +\n          'manager supports ' + EciesAeadHkdfPublicKeyManager.KEY_TYPE + '.');\n    }\n    let key: PbEciesAeadHkdfPublicKey;\n    try {\n      key = PbEciesAeadHkdfPublicKey.deserializeBinary(keyData.getValue());\n    } catch (e) {\n      throw new SecurityException(\n          'Input cannot be parsed as ' +\n          EciesAeadHkdfPublicKeyManager.KEY_TYPE + ' key-proto.');\n    }\n    if (!key.getParams() || !key.getX() || !key.getY()) {\n      throw new SecurityException(\n          'Input cannot be parsed as ' +\n          EciesAeadHkdfPublicKeyManager.KEY_TYPE + ' key-proto.');\n    }\n    return key;\n  }\n}\n"]}