加密:
Private Function JiaMi(ByVal varPass As String) As String '参数varPass是需要加密的文本内容
Dim varJiaMi As String * 20
Dim varTmp As Double
Dim strJiaMi As String
Dim I
For I = 1 To Len(varPass)
varTmp = AscW(Mid$(varPass, I, 1))
varJiaMi = Str$(((((varTmp * 1.5) / 5.6) * 2.7) * I))
strJiaMi = strJiaMi &varJiaMi
Next I
JiaMi = strJiaMi
End Function
解密函数:
Private Function JieMi(ByVal varPass As String) As String '参数varPass是需要解密的密文内容
Dim varReturn As String * 20
Dim varConvert As Double
Dim varFinalPass As String
Dim varKey As Integer
Dim varPasslenth As Long
varPasslenth = Len(varPass)
For I = 1 To varPasslenth / 20
varReturn = Mid(varPass, (I - 1) * 20 + 1, 20)
varConvert = Val(Trim(varReturn))
varConvert = ((((varConvert / 1.5) * 5.6) / 2.7) / I)
varFinalPass = varFinalPass &ChrW(Val(varConvert))
Next I
JieMi = varFinalPass
End Function
扩展资料:注意事项
编写加密程序,将用户输入的一个英文句子加密为加密字符串,然后输出加密字符串。假设句子长度不超过100个字符。
根据给定的句子加密函数原型SentenceEncoding,编写函数SentenceEncoding调用给定的字符加密函数CharEncoding完成句子加密。
然后,编写主程序提示用户输入英文句子,然后调用函数SentenceEncoding对句子加密,最后输出加密后的句子。
字符加密规则为大写蔽铅字母和改禅小写字母均加密为其补码, 我们定义ASCII码值相加为’A’+’Z’即155的两个大写字母互为补码,ASCII码值相加为’a’+’z’即219的两个小写字母互为补码。
空格用@代替,句号以#代替,其它字符用句点代宏歼好替。
函数原型:
void SentenceEncoding(char *soure,char *code)
功能:对待加密字符串source加密后保存加密字符串到code.
参数:char *soure,指向待加密句子的字符串指针;
char *code 指向加密字符串的字符串指针;
字符加密函数代码。
'你这个需求很有意思啊,编写难度不是很大,但要考虑全面。'运行效果如上图,代码如下所示:
'判断中我将大小写字母均按规则进行了转换。
'原创,亲测可用,转发请说明出处。
Private Sub Command1_Click()
Dim a, b As String
a = Text1.Text
Dim i As Integer
i = Len(a)
Dim arr() As String
ReDim arr(1 To i)
Dim j As Integer
For j = 1 拆凳To i
b = Mid(a, j, 1)
If Asc(b) >= 97 And Asc(b) <= 118 Then
arr(j) = Chr(Asc(b) + 4)
End If
If Asc(b) = 119 Then
arr(j) = "a"
End If
If Asc(b) = 120 Then
arr(j) = "b"
End If
If Asc(b) = 121 Then
arr(j) = "c"
End If
If Asc(b) = 122 Then
arr(j) = "d"
End If
If Asc(b) >= 65 And Asc(b) <= 86 Then
arr(j) = Chr(Asc(b) + 4)
End If
If Asc(b) = 87 Then
arr(j) = "A"
End If
If Asc(b) = 88 Then
arr(j) = "B"
End If
If Asc(b) = 旅森旅89 Then
arr(j) = "C"
End If
If Asc(b) = 春模90 Then
arr(j) = "D"
End If
If Asc(b) < 65 Or Asc(b) > 122 Or (Asc(b) > 90 And Asc(b) < 97) Then
arr(j) = b
End If
Next j
Text2.Text = Join(arr, "")
End Sub
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