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base64

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base64

An encoding method that converts binary data into ASCII text and vice versa. It is commonly used to send non-text files via the Internet's email system (see MIME). Base64 divides each set of three bytes of the original data into four 6-bit units, which it represents as four 7-bit ASCII characters. This typically increases the original file by about a third. See quoted printable encoding and Base58.
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FUNCTION ImageModule(ImageFilePath) IF extension is NOT a legitimate image extension //label the file as SUSPICIOUS ELSE Image.Encode(); /* Encode it to base64 String Base64 String passed to the web service.
Normal SHA1 hash on the original message and target message will be used to verify the Base64 fragments.
Hill, Yongzhao Zhan, "Base62x: An alternative approach to Base64 for non-alphanumeric characters," 2011 Eighth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), vol.4, pp.2667-2670, 26-28 Jul.
These values are encoded in Base64 (see the presentation of the corresponding sub-VI in the next sections).
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