server/aspnetapp/Helper/Base64Helper.cs

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using System;
using System.Buffers.Text;
using System.Text;

namespace Common
{
    /// <summary>
    /// 实现Base64加密解密
    /// </summary>
    public sealed class Base64Helper
    {
        /// <summary>
        /// Base64加密，采用ecode编码方式加密
        /// </summary>
        /// <param name="ecode">编码方式</param>
        /// <param name="source">待加密的明文</param>
        /// <param name="ifnewline">是否换行</param>
        /// <returns>加密后的字符串</returns>
        public static string Base64Encode(string ecode, string source, bool ifnewline = false)
        {
            //注册编码
            Encoding encoding = Encoding.Default;
            if (!string.IsNullOrEmpty(ecode))
            {
                encoding = Encoding.GetEncoding(ecode);
            }
            return Base64Encode(encoding, source, ifnewline);
        }

        /// <summary>
        /// Base64加密
        /// </summary>
        /// <param name="encodeType">加密采用的编码方式</param>
        /// <param name="source">待加密的明文</param>
        /// <param name="ifnewline">是否换行</param>
        /// <returns></returns>
        public static string Base64Encode(Encoding encodeType, string source, bool ifnewline)
        {
            string encode = string.Empty;
            byte[] bytes = encodeType.GetBytes(source);
            try
            {
                if (ifnewline)
                {
                    encode = Convert.ToBase64String(bytes, Base64FormattingOptions.None);
                }
                else
                {
                    encode = Convert.ToBase64String(bytes);
                }
            }
            catch
            {
                encode = source;
            }
            return encode;
        }

        /// <summary>
        /// Base64解密，采用utf8编码方式解密