public static string Decrypt(string Source, string Key)
{
if (String.IsNullOrEmpty(Source))
{
throw new Exception("没有输入密文！");
}
else if (Source.Length % 16 != 0)
{
throw new Exception("密文长度有误！（密文长度须为16的倍数）");
}
if (Encoding.Default.GetBytes(Key).Length != 8)
{
throw new Exception("密钥个数必须为8个字符或4个汉字！");
}
try
{
//用于检测，"密文内容有误！（密文内容应为16进制）"
int temp;
for (int i = 0; i < Source.Length; i++)
{
temp = Convert.ToInt32(Source[i].ToString(), 16);
}
}
catch
{
throw new Exception("密文内容有误！（密文内容应为16进制）");
}
IdeaKey key = new IdeaKey(Key, false);
IdeaCipher idea = new IdeaCipher(Source, false, key);
return(idea.GetOutStr());
}
public static string Encrypt(string Source, string Key)
{
if (String.IsNullOrEmpty(Source))
{
throw new Exception("没有输入明文！");
}
if (Encoding.UTF8.GetBytes(Key).Length != 8)
{
throw new Exception("密钥个数必须为8个字符或4个汉字！");
}
IdeaKey key = new IdeaKey(Key, true);
IdeaCipher idea = new IdeaCipher(Source, true, key);
return(idea.GetOutStr());
}