一个利用随机数加密字串的算法

nbsp;       t2 = Mid(s, i + 1, 1)
        k = InStr(1, mstr, t1) - 1
        m = InStr(1, mstr, t2) - 1
        j = m \ 2 ^ 3
        m = m - j * 2 ^ 3
        ReDim Preserve buff(n)
        buff(n) = j * Len(mstr) + k
        buff(n) = buff(n) Xor m
        n = n + 1
     Next
     decode = StrConv(buff, vbUnicode)
     Exit Function
myERR:
     decode = ""
End Function