asp代码>" '将要保护的asp代码用WORD处理，然后填在此处
hu= base64Encode(inp) '调用函数base64Encode进行加密，得到密文hu
Response.Write(hu) '显示密文
PUBLIC SUB initCodecs() '初始化函数initCodecs
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
PUBLIC FUNCTION base64Encode(plain) '加密函数base64Encode
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
(3)重新改写要保护的asp文件
改写原来的asp文件，在文件中增加UnEncode 和base64Decode函数，全部代码如下：
Dim Hu,Hu2 '拷贝“欲保护asp代码”的密文 将之存放到Hu变量中 Hu=”c2V0IHJzPXNlcnZlci5jcmVhdGVvYmplY3Qo12Fkb2RiLnJlY29yZHNldOMpICAgICDuc3FsPeNzZWxlY3QgKiBmcm9tIGdxICB3aGVyZSB4cz0xIG9yZGVyIGJ5IGRhdGUgYXNj1yAgICAgsnJzLm9wZW4gc3FsLGNvbm4sMSwxICAgICDuaWYgcnMuZW9mIGFuZCBycy5ib2YgdGhlbiDucmVzcG9uc2Uud3JpdGUTvSD7INAg5iAgILUgvyAFILITsmVsc2UgsiAgICAgUmVzcG9uc2UuV3JpdGUg1zxBIEhSRUY9bmV3MC5hc3A/bGJpZD0TJnJlcXVlc3Qo12xiaWQTKSAmIOM+PC9BPuPuZW5kIGlmICAgIL5zZXQgcnM9bm90aGluZyAgICAgICAgsmNvbm4uY2xvc2UgICAgICDuc2V0IGNvbm49bm90aGluZyAgIL4” Hu2= base64Decode(hu) '还原要保护的ASP代码 execute(UnEncode(Hu2)) '还原单引号、回车换行，并执行原代码 ’解密函数base64Decode
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