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//
// Keychain.swift
// AT-IRC
//
// Minimal generic-password Keychain storage for the session blob.
//
import Foundation
import Security
enum Keychain {
private static let service = "com.fedfork.irc.AT-IRC"
static func set(_ data: Data, for key: String, accessible: CFString = kSecAttrAccessibleAfterFirstUnlockThisDeviceOnly) {
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrService as String: service,
kSecAttrAccount as String: key,
]
SecItemDelete(query as CFDictionary)
var attributes = query
attributes[kSecValueData as String] = data
attributes[kSecAttrAccessible as String] = accessible
SecItemAdd(attributes as CFDictionary, nil)
}
static func get(_ key: String) -> Data? {
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrService as String: service,
kSecAttrAccount as String: key,
kSecReturnData as String: true,
kSecMatchLimit as String: kSecMatchLimitOne,
]
var result: CFTypeRef?
guard SecItemCopyMatching(query as CFDictionary, &result) == errSecSuccess else {
return nil
}
return result as? Data
}
static func delete(_ key: String) {
let query: [String: Any] = [
kSecClass as String: kSecClassGenericPassword,
kSecAttrService as String: service,
kSecAttrAccount as String: key,
]
SecItemDelete(query as CFDictionary)
}
}
