Blot out authentication in Radix-64

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Aug 6th, 2022
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How to blot out authentication in Radix-64

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what is going on guys welcome back in this video today weamp;#39;re going to learn how and why to use base64 encoding in Python so letamp;#39;s get right into it all right so weamp;#39;re going to talk about base64 in this video today and weamp;#39;re going to also learn how to use Python to encode and decode data using base64 but before we go into the code I would like to talk a little bit about base64 in general how it works behind the scenes and for this we can open up the Wikipedia page and uh the way it works is quite simple so what we have is we have sequences of bytes now remember one byte is eight bits so if we have one byte that is the same as having eight bits and one bit is either zero or one so if you have eight bits something like this that would be eight bits that would be one byte now I can also have three times eight bits so if I have something like this this should be eight right this this so those are now three times eight bits so three times eight bits or

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The = sign is used to indicate padding if the input string length is not a multiple of 3 bytes. If we have four bytes for the input, then the base64 encoding ends with two equal signs, just to indicate that it had to add two characters of padding.
Base64 is a binary to a text encoding scheme that represents binary data in an American Standard Code for Information Interchange (ASCII) string format. Its designed to carry data stored in binary format across the channels, and it takes any form of data and transforms it into a long string of plain text.
When decoding Base64 text, four characters are typically converted back to three bytes. The only exceptions are when padding characters exist. A single = indicates that the four characters will decode to only two bytes, while == indicates that the four characters will decode to only a single byte.
A Base64 string will end with == if and only if the number of bytes it encodes, mod 3, equals 1. Do you see the pattern? It happens that 16-byte (128-bit) encryption keys are very commonly encoded in Base64, and since 16 mod 3 = 1, their encoding will end with == . But your string, decoded, is 61 bytes (488 bits) long.
Base64 strings tend to end in one or two equal signs, but not always! These strings are not exact representations of the binary data in ASCII, because padding is applied to ensure the string length is a multiple of 4 characters. Each equal sign represents two bits of zero-padding.
Unfortunately its not completely safe. There are only 62 characters that are guaranteed to have no special meaning in all systems. They are digits, English small letters, and English capital letters. You need 2 more characters for base64.
What is Radix 64 Encoding? Radix 64 encoding allows binary data stored in octets (i.e. bytes) to be expressed as printable characters.

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