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What would be a best Class for base64 encryption/decryption in Action Script?
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To decode a file with contents that are base64 encoded, you simply provide the path of the file with the --decode flag. As with encoding files, the output will be a very long string of the original file. You may want to output stdout directly to a file.
Base64 Decoding an Image To decode an image using Python, we simply use the base64. b64decode(s) function. Python mentions the following regarding this function: Decode the Base64 encoded bytes-like object or ASCII string s and return the decoded bytes.
How fast can you decode base64 data? On a recent Intel processor, it takes roughly 2 cycles per byte (from cache) when using a fast decoder like the one from the Chrome browser. This fast decoder is basically doing table lookups.
Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The term Base64 originates from a specific MIME content transfer encoding.
Adobe has two utils for this - Base64Encoder & Base64Decoder. Both are located in the mx.utils package. Although, I had to track them down here - encoder & decoder.
The usage would be something like:
var bmd:BitmapData = myBitmap.bitmapData;
var ba:ByteArray = bmd.getPixels(new Rectangle(0,0,bmd.width,bmd.height));
var b64:Base64Encoder = new Base64Encoder();
b64.encodeBytes(ba);
trace(b64.toString());
Similarly, 'b64.encode' would encode a String rather than a ByteArray.
Both the encoder and decoder add their respective results to an internal buffer. So, you just have to use 'toString' to return the current buffer.
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