SWIFT - Encrypt/Decrypt AES with CryptoSwift

String+AES.swift

//
//  String+AES.swift
//  bitcoin
//
//  Created by Tiago Do Couto on 7/31/18.
//  Copyright © 2018 coutocode. All rights reserved.
//

import CryptoSwift

extension String {
    
    func aesEncrypt(key: String, iv: String) throws -> String{
        let data = self.data(using: String.Encoding.utf8)
        let bytes = [UInt8](data!)
        let enc = try AES(key: key.bytes, blockMode: CBC(iv: iv.bytes), padding: .pkcs7).encrypt(bytes)
        let encData = NSData(bytes: enc, length: Int(enc.count))
        let base64String: String = encData.base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0));
        let result = String(base64String)
        return result
    }
    
    func aesDecrypt(key: String, iv: String) throws -> String {
        let data = NSData(base64Encoded: self, options: NSData.Base64DecodingOptions(rawValue: 0))
        let bytes = [UInt8](data! as Data)
        let dec = try AES(key: key.bytes, blockMode: CBC(iv: iv.bytes), padding: .pkcs7).decrypt(bytes)
        let decData = NSData(bytes: dec, length: Int(dec.count))
        let result = NSString(data: decData as Data, encoding: String.Encoding.utf8.rawValue)
        return String(result!)
    }
}