I don't believe it is "effectively limited" to 20 bytes.  This was a
documentation error based on a profound misunderstanding of the SHA-1 hash
function.

On Thursday, July 23, 2015, Stefan Heymann <li...@stefanheymann.de> wrote:

> In the FB3 Release Notes the chapter about "Increased Password Length"
> speaks of a maximum of 20 *bytes*. The second blue box in this chapter
> then asks:
>
> Why is the password effectively limited to 20 *characters*?
>
> It is unclear from this documentation if this is about bytes or
> characters. What character set is used for storing passwords? Are
> these restricted to 7-Bit US-ASCII? (in this case, the number of bytes
> and characters would be the same, but it should be clear from the
> documentation).
>
>
> Best Regards
>
> Stefan
>
>
>
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-- 
Jim Starkey
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