- Bubble Babble
computing, Bubble Babble is a binary dataencoding designed by Antti Huima.This encoding uses alternation of consonants and vowels to encode binary data to pseudowords that can be pronounced more easily than arbitrary lists of hexadecimaldigits. While Bubble Babble is technically a binary encoding, it also acts as a 65,536-digit positional number systemwith a one-to-one mapping from each five-character sequence to 16 bits of data.
Bubble babble also includes a
checksumin its encoding to detect transmission errors, as well as markers for the start and end of a number string. Each two bytesin the input sequence results in the output of five characters and a dash.
The original specification for Bubble Babble lists these example
test vectorencodings. The strings are considered to be ASCII-encoded:
`' (empty string) `xexax' `1234567890' `xesef-disof-gytuf-katof-movif-baxux' `Pineapple' `xigak-nyryk-humil-bosek-sonax'
According to the specification, each vowel in the output string conveys 0.58 bits of redundant information for every input bit. Therefore, a 1000-word string would have 4640 extra bits of checksum information to detect flipped bits and other
* There may be situations where validated encryption keys are unavailable, and key verification depends entirely on the user comparing the key fingerprint with their recollection of that of the authentic key. If the fingerprint is shown in Bubble Babble encoding, it may be slightly more memorable than the hexadecimal equivalent. This is of course not ideal, but may be a preferable alternative to accepting a key without any checking at all.
Double dabble, an unrelated algorithm with a similar name
S/KEYuses a lookup table to encode 64-bit numbers as 6 English words
PGP word listis another way of encoding binary values into pronounceable words, using a standardized list of 512 unique words
Dicewarehas a way of encoding base 6values into pronounceable words, using a standardized list of 7,776 unique words
* [http://wiki.yak.net/589 Bubble Babble Encoding]
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