/// <summary>
/// 多进制除法
/// </summary>
/// <param name="format">格式</param>
/// <param name="str1">第一个数</param>
/// <param name="str2">第二个数</param>
/// <returns>商</returns>
static public string division(int format, string str1, string str2)
{
int num1 = CryptoString.stringToInt(anyToDec(str1, format));
int num2 = CryptoString.stringToInt(anyToDec(str2, format));
return(decToAny((num1 / num2).ToString(), format));
}
/// <summary>
/// 字符串转&#十进制格式的Unicode编码(如：xss)
/// </summary>
/// <param name="str">字符串</param>
/// <returns>&#十进制格式的Unicode编码</returns>
public static string StringToHTMLUnicode(string str)
{
string unicode = StringToUnicode(str);
string ux10 = "";
for (int i = 2; i < unicode.Length; i = i + 6)
{
ux10 += "\\u" + Conversion.convert(unicode.Substring(i, 4), 16, 10);
}
return(CryptoString.regReplace(ux10, "&#", @"\\u0*"));
}
/// <summary>
/// Sha256加密
/// </summary>
/// <param name="str">要加密的字符串</param>
/// <returns></returns>
static public string sha256(string str)
{
byte[] bytes = CryptoString.stringToBytes(str);
System.Security.Cryptography.SHA256 sha256 = new SHA256CryptoServiceProvider();
byte[] retval = sha256.ComputeHash(bytes);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < retval.Length; i++)
{
sb.Append(retval[i].ToString("x2"));
}
return(sb.ToString());
}
/// <summary>
/// 16进制ASCII串转字符串
/// </summary>
/// <param name="hex">16进制ASCII串(每个ASCII必须占2位,不需要0x)</param>
/// <returns>字符串</returns>
public static string ASCIIToString(string hex)
{
if (hex.StartsWith("0x") || hex.StartsWith("0X"))
{
hex = hex.Remove(0, 2);
}
int len = hex.Length;
if (len % 2 != 0)
{
throw new Exception("字符串长度错误");
}
string str = "";
for (int i = 0; i < len; i++)
{
str += ASCIIToString(new byte[] { //按byte转ASCII
(byte)CryptoString.stringToInt( //将10进制string数字字符串转对应int
Conversion.convert( //16进制转10进制
new string(new char[] { hex[i], hex[++i] }), 16, 10))
});
}
return(str);
}
/// <summary>
/// 生成随机盐值
/// </summary>
/// <param name="n">盐的长度</param>
/// <param name="_chars">自定义随机的类型（默认数字和大小写字母）</param>
/// <returns>盐值</returns>
static public string randomSalt(int n,
string _chars = "0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM")
{
return(CryptoString.randomString(n, _chars));
}