对称EDS加解密方法

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#解密 #string #javascript #byte #加密 #null

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对称EDS加解密方法

1.
导入两个名称空间
:
using System.Security.Cryptography;
using System.Text.RegularExpressions;

2.
加密解密类
:
private static readonly string sKey="qJzGEh6hESZDVJeCnFPGuxzaiB7NLQM3";//
密钥
private static readonly string sIV="qcDY6X+aPLw=";//
矢量
,
矢量可以为空
private static SymmetricAlgorithm mCSP=new TripleDESCryptoServiceProvider();//
构造一个对称算法

3.
加密方法
:
public static string EncryptDes(string source)
{

ICryptoTransform ct;

MemoryStream ms;

CryptoStream cs;

byte[] byt;


string str=null;


mCSP.Key=Convert.FromBase64String(sKey);

mCSP.IV=Convert.FromBase64String(sIV);

mCSP.Mode=System.Security.Cryptography.CipherMode.ECB;

mCSP.Padding=System.Security.Cryptography.PaddingMode.PKCS7;


ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);


byt = Encoding.UTF8.GetBytes(source);


ms = new MemoryStream();

cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);

cs.Write(byt, 0, byt.Length);

cs.FlushFinalBlock();


cs.Close();


str=Convert.ToBase64String(ms.ToArray());


return str;
}

4.
机密方法
:
public static string DecryptDes(string source)
{

ICryptoTransform ct;

MemoryStream ms;

CryptoStream cs;

byte[] byt;


string str=null;


mCSP.Key=Convert.FromBase64String(sKey);

mCSP.IV=Convert.FromBase64String(sIV);

mCSP.Mode=System.Security.Cryptography.CipherMode.ECB;

mCSP.Padding=System.Security.Cryptography.PaddingMode.PKCS7;


ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);


byt = Convert.FromBase64String(source);


ms = new MemoryStream();

cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);

cs.Write(byt, 0, byt.Length);

cs.FlushFinalBlock();


cs.Close();


str= Encoding.UTF8.GetString(ms.ToArray());


return str;
}
链接地址:
http://dygstudio.cnblogs.com/archive/2006/07/13/449989.html

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