69 lines
2.4 KiB
Swift
69 lines
2.4 KiB
Swift
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import Foundation
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import SwiftUI
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/// Минимальный держатель identity для первой итерации.
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/// Полные derived keys (ML-DSA + ML-KEM) — Phase 2 (FFI к Rust).
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struct Identity: Equatable {
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let masterSeed: Data
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let accountIdHex: String
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let mnemonic: String?
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}
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@MainActor
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final class IdentityManager: ObservableObject {
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@Published private(set) var identity: Identity?
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private let storageKey = "MontanaIdentity_v1"
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init() {}
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/// Загрузить existing identity из Keychain (если есть).
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func loadIfPresent() {
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guard let data = KeychainStore.read(key: storageKey),
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let stored = try? JSONDecoder().decode(StoredIdentity.self, from: data) else {
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return
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}
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identity = Identity(
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masterSeed: stored.masterSeed,
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accountIdHex: stored.accountIdHex,
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mnemonic: nil
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)
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}
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/// Создать новую identity из случайной мнемоники.
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func createNew() throws -> String {
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let mnemonic = Mnemonic.generate()
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try install(mnemonic: mnemonic)
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return mnemonic
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}
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/// Восстановить identity из существующей мнемоники.
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func restore(from mnemonic: String) throws {
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try install(mnemonic: mnemonic)
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}
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/// Стереть identity локально (для тестов / переустановки).
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func wipe() {
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KeychainStore.delete(key: storageKey)
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identity = nil
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}
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private func install(mnemonic: String) throws {
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let masterSeed = try Mnemonic.decodeAndDerive(mnemonic: mnemonic)
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// Placeholder account_id = SHA-256("mt-account-placeholder" || masterSeed[0..16])
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// Реальный account_id = SHA-256("mt-account" || pubkey_suite || ml_dsa_pubkey) — Phase 2
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let accountIdHex = HashUtil.sha256Hex(prefix: "mt-account-placeholder", body: masterSeed.prefix(16))
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let stored = StoredIdentity(masterSeed: masterSeed, accountIdHex: accountIdHex)
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let data = try JSONEncoder().encode(stored)
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KeychainStore.write(key: storageKey, value: data)
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identity = Identity(masterSeed: masterSeed, accountIdHex: accountIdHex, mnemonic: mnemonic)
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}
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}
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private struct StoredIdentity: Codable {
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let masterSeed: Data
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let accountIdHex: String
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}
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