标签:type-conversion cryptography vb-net c net
我在Vb.net中有一个密码学类,可以正常工作,但是我需要在C#代码中进行转换.
我的Vb.net方法是这样的:
Public Shared Function CryptSenha(ByVal strCdSenha As String) As String
Dim Chave As String
Const MIN_ASC = 48
Const MAX_ASC = 126
Const NUM_ASC = MAX_ASC - MIN_ASC + 1
Chave = 2001
Dim offset As Long
Dim str_len As Integer
Dim i As Integer
Dim ch As Integer
Dim to_text As String
Try
to_text = ""
offset = NumericPassword(Chave)
Rnd(-1)
Randomize(offset)
str_len = Len(strCdSenha)
For i = 1 To str_len 'Faça 1 até str_len
ch = Asc(Mid$(strCdSenha, i, 1))
'Início do If
If ch >= MIN_ASC And ch <= MAX_ASC Then
ch = ch - MIN_ASC
offset = Int((NUM_ASC + 1) * Rnd())
ch = ((ch + offset) Mod NUM_ASC)
ch = ch + MIN_ASC
to_text = to_text & Chr(ch)
End If
Next i
Return to_text
Catch ex As Exception
Throw ex
End Try
End Function
我的C#代码是这样的:
public static string CryptSenha(string strCdSenha)
{
string Chave = null;
const int MIN_ASC = 48;
const int MAX_ASC = 126;
const int NUM_ASC = MAX_ASC - MIN_ASC + 1;
Chave = "2001";
long offset = 0;
int str_len = 0;
int i = 0;
int ch = 0;
string to_text = null;
try
{
to_text = "";
offset = NumericPassword(Chave);
VBMath.Rnd(-1);
VBMath.Randomize(offset);
str_len = Strings.Len(strCdSenha);
for (i = 1; i <= str_len; i++)
{
ch = Strings.Asc(Strings.Mid(strCdSenha, i, 1));
if (ch >= MIN_ASC & ch <= MAX_ASC)
{
ch = ch - MIN_ASC;
offset = Convert.ToInt64((NUM_ASC + 1) * VBMath.Rnd());
ch = Convert.ToInt16((ch + offset) % NUM_ASC);
ch = ch + MIN_ASC;
to_text = to_text + Strings.Chr(ch);
}
}
return to_text;
}
catch (Exception ex)
{
throw ex;
}
}
因此,当我在vb.net中使用函数时,像“ Igor”这样的简单单词就等于“ iLCA”
在函数c#中,“ Igor”一词等于“ iLDB”,我想这是一次转换
在C#代码的这一行中:
offset = Convert.ToInt64((NUM_ASC + 1) * VBMath.Rnd());
有人可以帮我吗?
解决方法:
您对“ Int”的转换不正确-“ Int”会被截断.替换以下两行代码:
offset = Convert.ToInt32(Math.Floor(Convert.ToDouble((NUM_ASC + 1) * VBMath.Rnd())));
ch = (int)((ch + offset) % NUM_ASC);
标签:type-conversion,cryptography,vb-net,c,net 来源: https://codeday.me/bug/20191118/2030962.html
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