[Cryptography] Recommendations for short AES passphrases

Sidney Markowitz sidney at sidney.com
Sun Sep 18 16:50:40 EDT 2016

grarpamp wrote on 17/09/16 8:58 PM:
> The benefit of b94 is that bumping it to a 'relatively short and
> easy to share' length of 20 chars puts you just past 128 bits.

A minor point, but RFC1924 explains why using b85 is better than b94 if you
want to encode 128 bits. Short form of the explanation is that both of them
need 19 and a fraction chars to hold 128 bits, i.e. they both will encode to
20 chars, and b85 lets you choose more characters for other uses such as to
delimit the string.


More information about the cryptography mailing list