BASE64DEC - Revision history

Admin at 18:02, 17 January 2017

2017-01-17T18:02:42Z

Admin at 18:01, 17 January 2017

2017-01-17T18:01:54Z

Admin at 17:59, 17 January 2017

2017-01-17T17:59:51Z

Admin: /* Syntax */

2017-01-17T17:59:25Z

Syntax

Admin: Created page with "= Action = Converts Base-64 data into the original data. &nb..."

2013-02-07T10:37:00Z

Created page with "= Action = Converts Base-64 data into the original data. &nb..."

New page

= Action =

Converts Base-64 data into the original data.

 

 

= Syntax =

Result = BASE64DEC( source)

 

 

= Remarks =
<div style="padding: 0px; margin: 0px 0px 0px 4px;">
{| width="609" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
|- style="vertical-align: top;"
| valign="top" width="13%" style="width: 75px; border: 1px solid rgb(0, 0, 0);" |
Result

| valign="top" width="100%" style="width: 525px; border: 1px solid rgb(0, 0, 0);" |
A string variable that is assigned with the un-coded string.

|- style="vertical-align: top;"
| valign="top" width="13%" style="width: 75px; border: 1px solid rgb(0, 0, 0);" |
Source

| valign="top" width="100%" style="width: 525px; border: 1px solid rgb(0, 0, 0);" |
The source string that is coded with base-64.

|}
</div>
 

Base-64 is not an encryption protocol. It sends data in 7-bit ASCII data format. MIME, web servers, and other Internet servers and clients use Base-64 coding.

 

The provided Base64Dec() function is a decoding function. It was written to add authentication to the web server sample.

When the web server asks for authentication, the client will send the user and password unencrypted, but base-64 coded to the web server.

Base-64 coded strings are always in pairs of 4 bytes. These 4 bytes represent 3 bytes.

 

 

= See also =

[[CONFIG_TCPIP|CONFIG TCPIP]] , [[GETSOCKET]] , [[SOCKETCONNECT]] , [[SOCKETSTAT]] , [[TCPWRITE]] , [[TCPWRITESTR]] , [[CLOSESOCKET]] , [[SOCKETLISTEN]] , [[BASE64ENC]]

 

 

= Example =

 <source lang="bascomavr">
$regfile = "m48def.dat" ' specify the used micro
$crystal = 8000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space
$lib "tcpip.lbx"
Config Com1 = Dummy , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

Dim S As String * 15 , Z As String * 15

S = "bWFyazptYXJr"
Z = Base64dec(s)
Print Z 'mark:mark

End
</source> {{Languages}}

[[Category:BASCOM_Language_Reference]]

@@ Line 105: / Line 105: @@
 <br/><source lang="bascomavr">
-$regfile = "m32U4def.dat" $crystal = 16000000 $baud = 19200
+$regfile = "m32U4def.dat"
-Dim S As String * 80 , Z As String * 80 , B As Byte , J As Byte Dim Ar(81) As Byte At S Overlay
+Dim S As String * 80 , Z As String * 80 , B As Byte , J As Byte
 S = "This is a test" 'while we load the array with string data, we could load it with any data that can contain a 0.

@@ Line 102: / Line 102: @@
 End
 </source><br/>{{Languages}}
-[[Category:BASCOM_Language_Reference]]
+[[Category:BASCOM Language Reference]]

@@ Line 9: / Line 9: @@
 = <span class="f_Header">Syntax</span> =
-Result =&nbsp;<span class="f_Syntax">BASE64DEC</span>( source)
+Result = <span class="f_Syntax">BASE64DEC</span>( source)
 <span style="font-family: Arial;">&nbsp;</span>

@@ Line 20: / Line 20: @@
 = <span class="f_Header">Remarks</span> =
-<div style="padding: 0px; margin: 0px 0px 0px 4px;">
+<div style="padding: 0px; margin: 0px 0px 0px 4px;"><div style="padding: 0px; margin: 0px 0px 0px 4px;">
-{| width="609" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
+{| style="border: solid 2px #000000; border-spacing:0px; border-collapse: collapse;" width="609" cellspacing="0" cellpadding="1" border="1"
 |- style="vertical-align: top;"
-| valign="top" width="13%" style="width: 75px; border: 1px solid rgb(0, 0, 0);" |
+| style="width:13%; border: solid 1px #000000;" width="13%" valign="top" |
 Result
-| valign="top" width="100%" style="width: 525px; border: 1px solid rgb(0, 0, 0);" |
+| style="width:100%; border: solid 1px #000000;" width="100%" valign="top" |
 A string variable that is assigned with the un-coded string.
 |- style="vertical-align: top;"
-| valign="top" width="13%" style="width: 75px; border: 1px solid rgb(0, 0, 0);" |
+| style="width:13%; border: solid 1px #000000;" width="13%" valign="top" |
 Source
-| valign="top" width="100%" style="width: 525px; border: 1px solid rgb(0, 0, 0);" |
+| style="width:100%; border: solid 1px #000000;" width="100%" valign="top" |
 The source string that is coded with base-64.
 |}
@@ Line 50: / Line 64: @@
 Base-64 coded strings are always in pairs of 4 bytes. These 4 bytes represent 3 bytes.
 <span style="font-family: Arial;">&nbsp;</span>