转发 asp base64加密的函数
<%
'asp base64加密的函数
Function Base64Encode(sText)Dim oXML, oNode
Set oXML = CreateObject("Msxml2.DOMDocument.3.0")
Set oNode = oXML.createElement("base64")
oNode.dataType = "bin.base64"
oNode.nodeTypedValue = Stream_StringToBinary(sText)
Base64Encode = Replace(Replace(oNode.Text, Chr(10), ""), Chr(13), "")
Set oNode = Nothing
Set oXML = Nothing
End Function
Private Function Stream_StringToBinary(Text)
Const adTypeText = 2
Const adTypeBinary = 1
Dim BinaryStream 'As New Stream
Set BinaryStream = CreateObject("ADODB.Stream")
BinaryStream.Type = adTypeText
BinaryStream.Charset = "UTF-8"
BinaryStream.Open
BinaryStream.WriteText Text
BinaryStream.position = 0
BinaryStream.Type = adTypeBinary
BinaryStream.position = 0
Stream_StringToBinary = BinaryStream.Read
Set BinaryStream = Nothing
End Function
%>
前段js解密代码：
//对msg中的base64编码进行解密
let reg = /77u\/([^\s]+)/g;
let result = "";
while(result = reg.exec(msg)) {
msg=msg.replace("77u/" + result[1], Base64.decode(result[1]));
}
ASP BASE64加解密(核心代码：
<%
' OPTION EXPLICIT
const BASE_64_MAP_INIT = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
dim newline
dim Base64EncMap(63)
dim Base64DecMap(127)
'初始化函数
PUBLIC SUB initCodecs()
' 初始化变量
newline = "<P>" & chr(13) & chr(10)
dim max, idx
max = len(BASE_64_MAP_INIT)
for idx = 0 to max - 1
Base64EncMap(idx) = mid(BASE_64_MAP_INIT, idx + 1, 1)
next
for idx = 0 to max - 1
Base64DecMap(ASC(Base64EncMap(idx))) = idx
next
END SUB
'Base64加密函数
PUBLIC FUNCTION base64Encode(plain)
if len(plain) = 0 then
base64Encode = ""
exit function
end if
dim ret, ndx, by3, first, second, third
by3 = (len(plain) \ 3) * 3
ndx = 1
do while ndx <= by3
first = asc(mid(plain, ndx+0, 1))
second = asc(mid(plain, ndx+1, 1))
third = asc(mid(plain, ndx+2, 1))
ret = ret & Base64EncMap( (first \ 4) AND 63 )
ret = ret & Base64EncMap( ((first * 16) AND 48) + ((second \ 16) AND 15 ) )
ret = ret & Base64EncMap( ((second * 4) AND 60) + ((third \ 64) AND 3 ) )
ret = ret & Base64EncMap( third AND 63)
ndx = ndx + 3
loop
if by3 < len(plain) then
first = asc(mid(plain, ndx+0, 1))
ret = ret & Base64EncMap( (first \ 4) AND 63 )
if (len(plain) MOD 3 ) = 2 then
second = asc(mid(plain, ndx+1, 1))
ret = ret & Base64EncMap( ((first * 16) AND 48) + ((second \ 16) AND 15 ) )
ret = ret & Base64EncMap( ((second * 4) AND 60) )
else
ret = ret & Base64EncMap( (first * 16) AND 48)
ret = ret '& "="
end if
ret = ret '& "="
end if
base64Encode = ret
END FUNCTION
'Base64解密函数
PUBLIC FUNCTION base64Decode(scrambled)
if len(scrambled) = 0 then
base64Decode = ""
exit function
end if
dim realLen
realLen = len(scrambled)
do while mid(scrambled, realLen, 1) = "="
realLen = realLen - 1
loop
dim ret, ndx, by4, first, second, third, fourth
ret = ""
by4 = (realLen \ 4) * 4
ndx = 1
do while ndx <= by4
first = Base64DecMap(asc(mid(scrambled, ndx+0, 1)))
second = Base64DecMap(asc(mid(scrambled, ndx+1, 1)))
third = Base64DecMap(asc(mid(scrambled, ndx+2, 1)))
fourth = Base64DecMap(asc(mid(scrambled, ndx+3, 1)))
ret = ret & chr( ((first * 4) AND 255) + ((second \ 16) AND 3))
ret = ret & chr( ((second * 16) AND 255) + ((third \ 4) AND 15))
ret = ret & chr( ((third * 64) AND 255) + (fourth AND 63))
ndx = ndx + 4
loop
if ndx < realLen then
first = Base64DecMap(asc(mid(scrambled, ndx+0, 1)))
second = Base64DecMap(asc(mid(scrambled, ndx+1, 1)))
ret = ret & chr( ((first * 4) AND 255) + ((second \ 16) AND 3))
if realLen MOD 4 = 3 then
third = Base64DecMap(asc(mid(scrambled,ndx+2,1)))
ret = ret & chr( ((second * 16) AND 255) + ((third \ 4) AND 15))
end if
end if
base64Decode = ret
END FUNCTION
%>
使用方法：
' 初始化
call initCodecs
Response.Write(base64Encode("脚本之家之我要加密的字符串"))
Response.Write(base64Decode("bWFyczIwMTAwMjIw0"))
