I have the following piece of Base64 encoded data, and I want to use the Python Base64 module to extract information from it.
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Base64 encoding is an encoding of binary data using bytes whose values are constrained to a well-defined 64-character subrange of the ASCII character set representing printable characters, devised at a time when sending arbitrary bytes was problematic, especially with the high bit set (byte values > 0x7f).
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Encoding strings to and from base-64. 55. Convert UTF-8 to base64 string. 1.
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BASE64Decoder decoder = new BASE64Decoder(); byte[] decodedBytes = decoder.decodeBuffer(encodedBytes); Where encodedBytes is either a java.lang.String or a java.io.InputStream. Just beware that the sun.* classes are not"officially supported" by Sun. EDIT: Who knew this would be the most controversial answer I'd ever post? I do know that sun ...
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your UnBase64 function may compromise the memory after the dest buffer, if that buffer is the exact size required to decode the base 64 encoded string. Take for instance the simple case where you try to decode the following base 64 encoded string"BQ==", into a single BYTE i.e. unsigned char Result = 0; UnBase64(&Result,"BQ==", 4); It will corrupt the stack!
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BASE64 encoding takes 3 Bytes of input stream and converts it to 4 * 3 Bytes. Each of these 3 Bytes are mapped to 64 different characters (a-z, A-Z, 0-9,"+","/" - thus you get name BASE64). Ensure that value of substring_length is a whole multiple of 4 for BASE64_DECODE, resp. a whole multiple of 3 for BASE64_ENCODE.
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Is there a freely available Base64 decoding code snippet in C++?
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Well, in base-64, we have 64 distinct symbols. So, it really is just the number system, in exactly the same way as those other number systems. Now, WHICH 64 symbols to use is a completely different matter, and in some cases, you need to use a different set of 64 symbols than in other cases.
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To sum up the other two posts, here are two simple functions to encode/decode Base64 strings with Go: // Dont forget to import"encoding/base64"!
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Base64 Win-1251 decoding for encodings other than acsi or iso-8859-1.. As it turned out, all the scripts I saw here convert Cyrillic Base64 to iso-8859-1 encoding.
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