base64

how to base64 url decode in python

for facebook fbml apps facebook is sending in a signed_request parameter explained here http://developers.facebook.com/docs/authentication/canvas they have given the php version of decoding this signed request: http://pastie.org/1054154 how to do the same in python? i tried base64 module but i am getting Incorrect padding error: >>...

Rails: base64 and character escaping problem

In my app I need to encode a string via base64, escape it's possible special characters and put it into a URL. I do the following: string = "[email protected]" enc = OpenSSL::Cipher::Cipher.new('DES-EDE3-CBC') enc.encrypt('dummy_salt') encoded = URI.escape(Base64.encode64(enc.update(string) << enc.final)) The problem is, that ...

Possible encoding type to convert a byte array to be sent by SMS

I need to send a public key created by RSA by SMS to another phone. I am converting the 148 byte public key to base64 to be sent by SMS. But it increases the 148 bytes to 200 bytes when converted. As byte[] cannot be directly sent by SMS, what are the other possible methods of converting them successfully to strings or equivalent which ...

Anybody know a simple base64 conversion site?

I need to convert some images to base64 for embedding into my CSS... anyone know a simple site that will allow me to simply enter a URI and have it convert so I can copy-paste into my code? ...

deserialize json base64 binary in .net using DataContractJsonSerializer

hey, I am having a problem deserializing base64 json back into the .net object using wcf datacontract.... I have this to deserialize: public static T FromJSON( this string json ) { using ( MemoryStream ms = new MemoryStream(ASCIIEncoding.Default.GetBytes(json)) ) { DataContractJsonSerializer ser = new DataContractJsonS...

Encoding base64 in Java and decoding in C#

Hi! I have to send a file to my webservice, but the webservice assumes the file (byte Array) as a base64Binary. Before the encoding, the byteArrayFile is saved on disk as a regular File. (I'm doing it just for testing) So, in my Java client for webservice, I'm sending the information this way: String file = new sun.misc.BASE64Encoder...

How to trim a Base-64 encoded string?

Hey guys, I'm not much of a PHP expert. I'm encoding a URL with base64_encode. I get quite a long encoded string with a lot of weird characters exactly as I want it to be. Is there a way to trim this long line of characters to let's say 10 or 15 chars, so I can decode it later again? I know there is trim() but that does not exactly wha...

Creating image from base64 encoded string (Silverlight 4.0)

I get a Catastrophic Failure error when I try to create an image from a base64 encoded string sent in an XML file. I have the back-end guy who says it works but he uses WPF and Silverlight is different. The code: void TagCloudImageCompleted(object sender, WebApiTagCloud.TagCloudImageCompletedEventArgs e) { String cloud...

Python base64 data decode and byte order convert

Hi, I am now using python base64 module to decode a base64 coded XML file, what I did was to find each of the data (there are thousands of them as for exmaple in "ABC....", the "ABC..." was the base64 encoded data) and add it to a string, lets say s, then I use base64.b64decode(s) to get the result, I am not sure of the result of the dec...

Most memory-efficient way of holding base64 data in Python?

Suppose you have a MD5 hash encoded in base64. Then each character needs only 6 bits to store each character in the resultant 22-byte string (excluding the ending '=='). Thus, each base64 md5 hash can shrink down to 6*22 = 132 bits, which requires 25% less memory space compared to the original 8*22=176 bits string. Is there any Python...

Concatenating two base64 images in Javascript

Is it possible to do simple string concatenation to 'join' 2 base 64 encoded images together if the images have the same characteristics (width/height/color depth etc)? eg img1 w=100, h=200 img2 w=100, h=200 img1+img2 results in img3 w=100, h=400 intuitively this feels like a stupid question since presumably the encoding includes...

Strange special character encoding error

Hi, I have a very strange character encoding error: I am sending a textfield to a script via jQuerys ajax function. Assuming I want to send the euro sign echo $string; produces € however echo base64_decode(base64_encode($string)); produces € any hints on how I could debug this problem? ...

django base64 decode encode returns different value

Hi. I was wondering if something can shed some light on where I might be going wrong with this. I need to generate a signed Key for use with Gigya an openauth platform This is a rework from their Ruby info, http://wiki.gigya.com/020_Developer_Guide/70_Server_Side_API_(REST)#tab-2 Here is what I have thus far. #@ escape the status mes...

How to decode base64 in C ?

Possible Duplicate: How do I base64 encode (decode) in C? Hello All, Is there any way i can only decode the base64 string in C ? Thanks, Neel ...

Can multiple base64 documents be stored in a single file?

If files are converted to base64 format can they be put in a single file? Is there a way they can be prefixed and postfixed in the file to allow them to be extracted? ...

VB6 base64 Binary

Hi, I have a problem on this webservice: http://credenciados.pronto.com.br/carga.asmx?op=IncluirMultimidia2 on arrayArquivo parameter, i use this function to generate data: Private Function getBase64fromFile(Filename) As String Dim base64 As New cls64base Dim FileInputData() As Byte Open Filename For Binary As #1 FileI...

Python base64 data decode

Hi, guys, I got a following peace of base64 encoded data, and I want to use python base64 module to extract information from it? It seems that module does not work. Anyone tells me how? Q5YACgAAAABDlgAbAAAAAEOWAC0AAAAAQ5YAPwAAAABDlgdNAAAAAEOWB18AAAAAQ5YHcAAAAABDlgeCAAAAAEOWB5QAAAAAQ5YHpkNx8H9Dlge4REqBx0OWB8pEpZ10Q5YH3ES2lxFDlgfuRIuPbEO...

How to decode with MessageDigest , Base64

I am currently encoding a password. I have to decode the password. Here is the code to encode. I am trying to get the original password compare it. I have researched about MessageDigest that says it is a one-way method. Not sure how to get the original message. We have a decode method but it isn't giving me the original password - ...

Is string base 64 encoded?

How can I find whether a string is a data encoded with base64_encode() function or not? Is it possible? ...

base64 encoding: input character

I'm trying to understand what the input requirements are for base64 encoding. Nicholas Zakas, who I have tremendous respect for has an article here where he quotes a specification that an error should be thrown if input contains any character with a code higher than 255 Zakas Article on base64 Before even attempting to base64 encode ...