Proyectos de Subversion Iphone Microlearning - Inconcert

//

//  HeaderSecurity.swift

//  twogetskills

//

//  Created by Efrain Yanez Recanatini on 5/6/22.

//

import Foundation

import var CommonCrypto.CC_MD5_DIGEST_LENGTH

import func CommonCrypto.CC_MD5

import typealias CommonCrypto.CC_LONG

import SwiftUI

class HeaderSecurity

{

    public let created : Int

    public let rand : Int

    public var secret : String = ""

    private var appData = Environment(\.appData).wrappedValue

    init()

    {

        created = Int(round(Date().timeIntervalSince1970))

        rand = Int.random(in: 0..<8999) + 1000

        let md5Data = MD5(string: "\(appData.devicePassword)" + ":" + "\(created)" + ":" + "\(rand)")

        secret =  md5Data.map {

            String(format: "%02hhx", $0)

        }.joined()

    }

    func MD5(string: String) -> Data {

        let length = Int(CC_MD5_DIGEST_LENGTH)

        let messageData = string.data(using:.utf8)!

        var digestData = Data(count: length)

        _ = digestData.withUnsafeMutableBytes { digestBytes -> UInt8 in

        messageData.withUnsafeBytes { messageBytes -> UInt8 in

        if let messageBytesBaseAddress = messageBytes.baseAddress, let digestBytesBlindMemory = digestBytes.bindMemory(to: UInt8.self).baseAddress {

                let messageLength = CC_LONG(messageData.count)

                    CC_MD5(messageBytesBaseAddress, messageLength, digestBytesBlindMemory)

                }

            return 0

            }

        }

        return digestData

    }

}