项目需要,原来该程序(asp)的加密和解密方法是:base64()Function Encode(str)'不处理中文
Dim i,j,k
k=Len(str)
For i=1 To k
j=Mid(str,i,1)
If ASC(j)<0 Or ASC(j)>255 Then
Encode=str
Exit Function
End If
Next Dim oBase
Set oBase = new base64
Call oBase.initCodecs()
Encode=oBase.base64Encode(str)
Set oBase=Nothing
End FunctionFunction Decode(str)'不处理中文
Dim i,j,k
k=Len(str)
For i=1 To k
j=Mid(str,i,1)
If ASC(j)<0 Or ASC(j)>255 Then
Decode=str
Exit Function
End If
Next Dim oBase
Set oBase = new base64
Call oBase.initCodecs()
Decode=oBase.base64Decode(str)
Set oBase=Nothing
End Function
上网找资料,想写一个.net的base64的加密解密算法,使得.net和asp的方法获得的结果一致.net方法
public string EncodeBase64(string s)
{
string strResult = "";
if ((s != null) && (s != ""))
{
strResult = Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(s.Trim()));
}
return strResult;
} public string DecodeBase64(string s)
{
string strResult = ""; if ((s != null) && (s != ""))
{
byte[] b = Convert.FromBase64String(s);
strResult = System.Text.Encoding.Default.GetString(b);
}
return strResult;
}
}
相同的一个字符串用 asp的加密和.net的加密结果不一样....
不知道为什么..郁闷.望达人相助..
Dim i,j,k
k=Len(str)
For i=1 To k
j=Mid(str,i,1)
If ASC(j)<0 Or ASC(j)>255 Then
Encode=str
Exit Function
End If
Next Dim oBase
Set oBase = new base64
Call oBase.initCodecs()
Encode=oBase.base64Encode(str)
Set oBase=Nothing
End FunctionFunction Decode(str)'不处理中文
Dim i,j,k
k=Len(str)
For i=1 To k
j=Mid(str,i,1)
If ASC(j)<0 Or ASC(j)>255 Then
Decode=str
Exit Function
End If
Next Dim oBase
Set oBase = new base64
Call oBase.initCodecs()
Decode=oBase.base64Decode(str)
Set oBase=Nothing
End Function
上网找资料,想写一个.net的base64的加密解密算法,使得.net和asp的方法获得的结果一致.net方法
public string EncodeBase64(string s)
{
string strResult = "";
if ((s != null) && (s != ""))
{
strResult = Convert.ToBase64String(System.Text.Encoding.Default.GetBytes(s.Trim()));
}
return strResult;
} public string DecodeBase64(string s)
{
string strResult = ""; if ((s != null) && (s != ""))
{
byte[] b = Convert.FromBase64String(s);
strResult = System.Text.Encoding.Default.GetString(b);
}
return strResult;
}
}
相同的一个字符串用 asp的加密和.net的加密结果不一样....
不知道为什么..郁闷.望达人相助..
Class base64
Private BASE_64_MAP_INIT
Private Base64EncMap(63)
Private Base64DecMap(127)
'初始化函数
PUBLIC SUB initCodecs()
' 初始化变量
BASE_64_MAP_INIT = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+-"
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。转载请保留www.it055.com版权
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
End Class