C#DES加密解密,加密成功,解密异常求大神指教一下。多谢,找了一天答案没找到!
代码如下: 加密能成功,解密失败,因为要和手机APP端对接 所以用这个。三端才能对接上 麻烦大神们帮忙解答、
//算法基类
private SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
string key = "jkmjnhbgnhyufhjsruew2iaozxcvbnml";
/// <summary>
/// 加密
/// </summary>
/// <param name="key">密匙</param>
/// <param name="value">要加密的字符 必须32位</param>
/// <param name="slv">向量</param>
/// <returns></returns>
public string EncryptString(string key,string value)
{
try
{
//加密转换运算
ICryptoTransform ct;
//存储区的流
MemoryStream ms;
//数据流到加密流
CryptoStream cs;
byte[] byt;
//指导加密密匙
mCSP.Key = Convert.FromBase64String(key);
//mCSP.Key = Encoding.UTF8.GetBytes(key);
//向量
//mCSP.IV = Convert.FromBase64String(slv);
//加密运算模式
mCSP.Mode = System.Security.Cryptography.CipherMode.ECB;
//获取或设置加密算法的填充模式
mCSP.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
//创建加密对象
ct = mCSP.CreateEncryptor(mCSP.Key, null);
byt = Encoding.UTF8.GetBytes(value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return Convert.ToBase64String(ms.ToArray());
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return ("Error in Encrypting " + ex.Message);
}
}
/// <summary>
/// 解密
/// </summary>
/// <param name="key">密匙,要加密的字符 必须32位</param>
/// <param name="value"></param>
/// <param name="slv">向量</param>
/// <returns></returns>
public string String(string value)
{
try
{
//加密转换运算
ICryptoTransform ct1;
//存储区的流
MemoryStream ms1;
//数据流到加密流
CryptoStream cs1;
byte[] byt;
//byte[] inputByteArray = new byte[value.Length / 2];
//for (int x = 0; x < value.Length / 2; x++)
//{
// int i = (Convert.ToInt32(value.Substring(x * 2, 2), 16));
// inputByteArray[x] = (byte)i;
//}
//指导加密密匙
mCSP.Key = Convert.FromBase64String(key);
//mCSP.Key = Encoding.UTF8.GetBytes(Key);
ct1 = mCSP.CreateDecryptor(mCSP.Key, null);
byt = Encoding.UTF8.GetBytes(value);
ms1 = new MemoryStream();
cs1 = new CryptoStream(ms1, ct1, CryptoStreamMode.Write);
cs1.Write(byt, 0, byt.Length);
cs1.FlushFinalBlock(); 要解密的数据的长度无效。
cs1.Close();
return Encoding.UTF8.GetString(ms1.ToArray());
}
catch (Exception ex)
{
return ("Error in Encrypting " + ex.Message);
}
}