![]() ![]() The receiver will have to reverse this process to retrieve the original message. To send a text message reliably, you can first encode to bytes using a text encoding of your choice (for example, UTF-8 ) and then Base64 encodes the resulting binary data into a text string that is safe to send encoded as ASCII. The downside is that encoding the message using Base64 increases its length – every 3 bytes of data is encoded to 4 ASCII characters. This allows you to encode arbitrary bytes into bytes that are safe to send without being corrupted (ASCII alphanumeric characters and some symbols). To solve these problems, Base64 encoding was introduced. However, most computers store binary data in bytes consisting of 8 bits each, so ASCII is not suitable for transferring this type of data. Originally, many different encodings were created (eg code Baudot ) that used a different number of bits per character until eventually the ASCII become a pattern with 7 bits per character. There are many different ways to perform this encoding and it would be much simpler if we could all agree on a single encoding, but unfortunately this was not the case. To transfer this data between computers, it is necessary to first encode in 0s and 1s, send and then decode again. To understand why the Base64 was invented, we need to understand some of the history of computers: Computers communicate via a binary system – 0s and 1s, but people generally want to communicate with data in more advanced formats, such as text or images. So why does it exist? And what is its use? To find the final encoded size, just take the original file size and apply the following formula: n * 4 / 3, Where no is the original size of the file. No, on the contrary, using the encoding algorithm Base64, file sizes increase by 33% (more precisely 4 ⁄ 3 ) as it replaces every 3 bytes with 4 bytes. ![]() Does Base64 reduce the size of my files? Can I use it as a method for compression? Do not use this technique to protect sensitive data, use the secure encryption methods. ![]() The encoding algorithm of Base64 it is not an encryption algorithm, it is easily decoded and therefore should not be used as a secure encryption method. Is Base64 secure? Can I use it as an encryption method? the character = is used as a special suffix and the original specification ( RFC 989 ) defined that the symbol * can be used to enclose converted but unencrypted data within a stream. Its alphabet consists of 64 characters (, ,, "/" and "+"), what gave rise to its name. It is often used to transmit binary data by means of transmissions that only deal with text, for example to send images and file attachments via e-mail. With this we can convert special characters such as Chinese logos, emoji and even images into a "readable" sequence (for any computer), which can be saved and/or transferred to any other place. Base64 is an encoding algorithm that allows you to transform any character of any language into an alphabet consisting of Latin letters, digits and signs. ![]()
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