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Engine provision and encryption module
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65 changes: 65 additions & 0 deletions
65
apps/policy-engine/src/app/core/service/provision.service.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| import { generateKeyEncryptionKey, generateMasterKey } from '@narval/encryption-module' | ||
| import { Injectable, Logger } from '@nestjs/common' | ||
| import { ConfigService } from '@nestjs/config' | ||
| import { randomBytes } from 'crypto' | ||
| import { Config } from '../../../policy-engine.config' | ||
| import { EngineService } from './engine.service' | ||
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| @Injectable() | ||
| export class ProvisionService { | ||
| private logger = new Logger(ProvisionService.name) | ||
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| constructor( | ||
| private configService: ConfigService<Config, true>, | ||
| private engineService: EngineService | ||
| ) {} | ||
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| async provision(): Promise<void> { | ||
| this.logger.log('Start engine provision') | ||
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| const engine = await this.engineService.getEngine() | ||
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| const isFirstTime = engine === null | ||
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| // IMPORTANT: The order of internal methods call matters. | ||
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| if (isFirstTime) { | ||
| await this.createEngine() | ||
| await this.maybeSetupEncryption() | ||
| } | ||
| } | ||
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| private async createEngine(): Promise<void> { | ||
| this.logger.log('Generate admin API key and save engine') | ||
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| await this.engineService.save({ | ||
| id: this.getEngineId(), | ||
| adminApiKey: randomBytes(20).toString('hex') | ||
| }) | ||
| } | ||
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| private async maybeSetupEncryption(): Promise<void> { | ||
| // Get the engine's latest state. | ||
| const engine = await this.engineService.getEngineOrThrow() | ||
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| if (engine.masterKey) { | ||
| return this.logger.log('Skip master key set up because it already exists') | ||
| } | ||
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| const keyring = this.configService.get('keyring', { infer: true }) | ||
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| if (keyring.type === 'raw') { | ||
| this.logger.log('Generate and save engine master key') | ||
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| const { masterPassword } = keyring | ||
| const kek = generateKeyEncryptionKey(masterPassword, this.getEngineId()) | ||
| const masterKey = await generateMasterKey(kek) | ||
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| await this.engineService.save({ ...engine, masterKey }) | ||
| } | ||
| } | ||
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| private getEngineId(): string { | ||
| return this.configService.get('engine.id', { infer: true }) | ||
| } | ||
| } |
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