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using
System; using
System.Text; namespace
Common { /// <summary> /// 实现Base64加密解密 /// 作者：周公 /// 时间：2007 /// </summary> public
sealed class
Base64 { /// <summary> /// Base64加密 /// </summary> /// <param name="codeName">加密采用的编码方式</param> /// <param name="source">待加密的明文</param> /// <returns></returns> public
static string
EncodeBase64(Encoding encode, string
source) { byte[] bytes = encode.GetBytes(source); try { encode = Convert.ToBase64String(bytes); } catch { encode = source; } return
encode; } /// <summary> /// Base64加密，采用utf8编码方式加密 /// </summary> /// <param name="source">待加密的明文</param> /// <returns>加密后的字符串</returns> public
static string
EncodeBase64(string
source) { return
EncodeBase64(Encoding.UTF8, source); } /// <summary> /// Base64解密 /// </summary> /// <param name="codeName">解密采用的编码方式，注意和加密时采用的方式一致</param> /// <param name="result">待解密的密文</param> /// <returns>解密后的字符串</returns> public
static string
DecodeBase64(Encoding encode, string
result) { string
decode = ""; byte[] bytes = Convert.FromBase64String(result); try { decode = encode.GetString(bytes); } catch { decode = result; } return
decode; } /// <summary> /// Base64解密，采用utf8编码方式解密 /// </summary> /// <param name="result">待解密的密文</param> /// <returns>解密后的字符串</returns> public
static string
DecodeBase64(string
result) { return
DecodeBase64(Encoding.UTF8, result); } } } |
原文：http://www.cnblogs.com/goody9807/p/3555681.html