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- Each Base64 digit represents 6 bits of data. So, three 8-bit bytes of the input string/binary file (3×8 bits = 24 bits) can be represented by four 6-bit Base64 digits (4×6 = 24 bits).
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Oct 14, 2008 · It's a textual encoding of binary data where the resultant text has nothing but letters, numbers and the symbols "+", "/" and "=". It's a convenient way to store/transmit binary data over media that is specifically used for textual data.
In computer programming, Base64 is a group of binary-to-text encoding schemes that transforms binary data into a sequence of printable characters, limited to a set of 64 unique characters. More specifically, the source binary data is taken 6 bits at a time, then this group of 6 bits is mapped to one of 64 unique characters.
May 9, 2023 · Here’s a step-by-step explanation of how Base64 encoding works: Divide the binary data into 24-bit groups (3 bytes) if the length of the binary data is evenly divisible by 3 bytes. For...
Nov 28, 2023 · Base64 is used because some systems are restricted to ASCII characters but are actually used for all kinds of data. Base64 can "camouflage" this data as ASCII and thus help this data pass validation. Because some older systems think that data consists of 7-bit chunks (bytes), whereas modern ones use 8-bit bytes. This may lead to ...
- History
- Naming
- Size
- Usage
- Security
The history of the Base64 started long ago, in those times when engineers argued how many bits should be in a byte. Now we use eight-bit bytes, but before that were used seven-bit, six-bit, and even three-bit bytes. By the time the eight-bit encoding was approved as a standard, many systems used old encodings and did not support the “new standard”....
Initially, the algorithm was named as “printable encoding” and only after a couple of years, in June 1992, RFC 1341 defines it as “Base64”. Since this algorithm uses 64 basic charactersit was not difficult to give it a name (especially that Base85 already existed). Therefore, I think it will not be a problem for you to guess what means the names of...
During encoding, the Base64 algorithm replaces each three bytes with four bytes and, if necessary, adds padding characters, so the result will always be a multiple of four. Simply put, the size of the result will always be 33% (more exactly, 4⁄3) larger than the original data. The formula for calculating the length of the result string without padd...
Base64 is most commonly used to encode binary data (for example, images, or sound files) for embedding into HTML, CSS, EML, and other text documents. In addition, Base64 is used to encode data that may be unsupported or damaged during transfer, storage, or output. Here are some of the applications of the algorithm: 1. Attach files when sending emai...
Base64 is not an encryption algorithm and in no case should it be used to “hash” passwords or “encrypt” sensitive data, because it is a reversible algorithm and the encoded data can be easily decoded. Base64 may only be used to encode raw result of a cryptographic function. Roughly speaking, in terms of information security, Base64 is just a foreig...
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Base64 is a binary-to-text encoding scheme. It represents binary data in a printable ASCII string format by translating it into a radix-64 representation. Learn what is Base64 encoding, how does it work, when and why it is used?
Aug 26, 2024 · Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by transforming it into a radix-64 representation. The term Base64 originates from a specific MIME content transfer encoding.
