pb解密算法实现
请问下大佬们我要用pb来实现以下的解密算法应该怎么写?
代码 如下:
private string DecryptString(string EncryptString)
{
string DecryptString="";
int n=0;
if (EncryptString.Length > 100)
{
MessageBox.Show("密码长度不能超过100!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return "";
}
for (int i = 0; i < EncryptString.Length;i++ )
{
if (i % 2 == 0)
n = EncryptString[i] + i - 7;
else
n = EncryptString[i] -i +31;
DecryptString = DecryptString + (char)n;
}
return DecryptString;
}