module1.bas

主要功能：接收和发送短信

Attribute VB_Name = "Module1"
Private Function Base64_Encode(strSource) As String 'base6加密算法
    Const BASE64_TABLE As String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
    Dim strTempLine As String
    Dim j As Long
    For j = 1 To (Len(strSource) - Len(strSource) Mod 3) Step 3
        strTempLine = strTempLine + Mid(BASE64_TABLE, (Asc(Mid(strSource, j, 1)) \ 4) + 1, 1)
        strTempLine = strTempLine + Mid(BASE64_TABLE, ((Asc(Mid(strSource, j, 1)) Mod 4) * 16 _
                      + Asc(Mid(strSource, j + 1, 1)) \ 16) + 1, 1)
        strTempLine = strTempLine + Mid(BASE64_TABLE, ((Asc(Mid(strSource, j + 1, 1)) Mod 16) * 4 _
                      + Asc(Mid(strSource, j + 2, 1)) \ 64) + 1, 1)
        strTempLine = strTempLine + Mid(BASE64_TABLE, (Asc(Mid(strSource, j + 2, 1)) Mod 64) + 1, 1)
    Next j
    If Not (Len(strSource) Mod 3) = 0 Then
         If (Len(strSource) Mod 3) = 2 Then
            strTempLine = strTempLine + Mid(BASE64_TABLE, (Asc(Mid(strSource, j, 1)) \ 4) + 1, 1)
            strTempLine = strTempLine + Mid(BASE64_TABLE, (Asc(Mid(strSource, j, 1)) Mod 4) * 16 _
                      + Asc(Mid(strSource, j + 1, 1)) \ 16 + 1, 1)
            strTempLine = strTempLine + Mid(BASE64_TABLE, (Asc(Mid(strSource, j + 1, 1)) Mod 16) * 4 + 1, 1)
            strTempLine = strTempLine & "="
        ElseIf (Len(strSource) Mod 3) = 1 Then
            strTempLine = strTempLine + Mid(BASE64_TABLE, Asc(Mid(strSource, j, 1)) \ 4 + 1, 1)
            strTempLine = strTempLine + Mid(BASE64_TABLE, (Asc(Mid(strSource, j, 1)) Mod 4) * 16 + 1, 1)
            strTempLine = strTempLine & "=="
        End If
     End If
    Base64_Encode = strTempLine
End Function