![]() ![]() The encrypted data is a good candidate to Base64-encode though, if you need to store the encrypted data in a text file. If you need to hide your data, use encryption. Numerous tools are available to decode the data without the need for any key. 7 Answers Sorted by: 142 Isn't encoding taking the text TO base64 and decoding taking base64 BACK to text You seem be mixing them up here. If you would like to obfuscate the data, then Base64 will offer you a very poor security mechanism. Also, mail and file systems can now cope with 4 byte words containing millions of characters. Base64 encoded data might save you some trouble there. Some of those settings may contain characters that aren't allowed in the file, like encrypted passwords, html snippets or other arbitrary data. Say for example that you have an xml, unix config or java property file with settings for an application. Well, it's often used when you already have binary data and you still want to store the data in a 7 bit environment. If the last group contains two characters the encoding will have just one = character. If the last 24 bits contain only one character, that character is encoded into two characters and the last two spots will be padded with the characters =. The = character is a padding character added at the end of the encoding in case the input data is not dividable by 3. 6 bits can contain 2^6 combinations, which is 64, thus the name Base64. Each section of 6 bits is then translated into a new character in the range a-zA-Z0-9+/. Now, the resulting 24 bits are split into four sections of 6 bits instead. Since 8 bit characters consist of, well, 8 bits, Base64 encoding groups the characters into groups of three 8 bit characters, yielding 24 bits. The original RFC for Base64 was the Privacy-enhanced Electronic Mail (PEM) RFC 989 but now numerous variations exists, as well as RFC:s, like the RFC 1421, RFC 2045, RFC 3548, RFC 4848 and several other as well. ![]() This was mostly used in transfering of data across 6 or 7 bit connections. As you see it is the exact input "Hello World" as present in the Base 64 Encode.In short, Base64-encoding is a way to encode 8 bit character data in a series of 6 bit characters. ![]()
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