common/Ui/Common.UI/Models/SQLiteKeyStore.cs

namespace Common.UI.Models
{
    using SQLite;

    internal class RadioKey
    {
        [PrimaryKey]
        [AutoIncrement]
        public int Id { get; set; }

        public uint Address { get; set; }

        public string EncryptionKey { get; set; }
    }

    internal class SQLiteKeyStore
    {
        private readonly SQLiteConnection connection;

        public SQLiteKeyStore()
        {
            this.connection = new SQLiteConnection(new SQLiteConnectionString("keystore.db"));
            _ = this.connection.CreateTable<RadioKey>();
        }

        public bool TryGetKey(uint address1, uint address2, out string encryptionKey)
        {
            //var existing = this.connection
            //    .Table<RadioKey>()
            //    .Where(x => x.Address == 4291535650)
            //    .FirstOrDefault();

            //if (existing != null)
            //{
            //    existing.EncryptionKey = "5DD3EF5233B4DAA6836721F2866182DA";

            //    this.connection.Update(existing);
            //}

            encryptionKey = this.connection
                .Table<RadioKey>()
                .FirstOrDefault(x => x.Address == address1 || x.Address == address2)
                ?.EncryptionKey;

            return !string.IsNullOrWhiteSpace(encryptionKey);
        }

        public void AddKey(uint address1, uint address2, string encryptionKey)
        {
            this.connection.Insert(new RadioKey
            {
                Address = address1,
                EncryptionKey = encryptionKey
            });
            this.connection.Insert(new RadioKey
            {
                Address = address2,
                EncryptionKey = encryptionKey
            });
        }
    }
}