vb.net winform 如何让登录密码 无法让任何人可以轻易的得知?

Question

如题

我老师说可以转为byte code 这样就算人家crack的到 access database(.mdb) 人家也需要消耗很多时间去 解密码@@
不知道有谁会吗@@？
请赐教～～

Answer 1

 密码用md5加密存到mdb

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http://feiyun0112.cnblogs.com/

Answer 2

恩了解
刚刚在一个resource 找到的 在这里分享一个md5 的加密方法



Imports System.Security.Cryptography
Imports System.Text

    Public Function MD5(ByVal st As String, ByVal bm As Short) As String
        Dim num As Integer
        Dim str As String
        Dim bytes As Byte() = New ASCIIEncoding().GetBytes(st)
        Dim buffer As Byte() = DirectCast(CryptoConfig.CreateFromName("MD5"), HashAlgorithm).ComputeHash(bytes)
        Select Case bm
            Case 16
                num = 4
                Do
                    str = (str & Conversion.Hex(buffer(num)).ToLower)
                    num += 1
                Loop While (num <= 11)
                Return str
            Case 32
                num = 0
                Do
                    str = (str & Conversion.Hex(buffer(num)).ToLower)
                    num += 1
                Loop While (num <= 15)
                Return str
        End Select
        Dim num2 As Integer = (buffer.Length - 1)
        num = 0
        Do While (num <= num2)
            str = (str & Conversion.Hex(buffer(num)).ToLower)
            num += 1
        Loop
        Return str
    End Function


要使用的话 只需使用此类似的  md5(textbox.text.trim,16）