Hello Herwin,
thanks for your note.
The documentaiton for md4_base64 days:
=item md4_base64($data,...)
Same as md4(), but will return the digest as a base64 encoded string.
The length of the returned string will be 22 and it will only contain
characters from this set: 'A'..'Z', 'a'..'z', '0'..'9', '+' and
'/'.
Note that the base64 encoded string returned is not padded to be a
multiple of 4 bytes long. If you want interoperability with other
base64 encoded md4 digests you might want to append the redundant
string "==" to the result.
--------------------
So the behaviour conforms to the documentation, and I dont intend to change
it. Especially because the widely used Digest::MD5 (upon which MD4 was based)
works exactly the same way.
Cheers.
On Thursday, November 01, 2012 03:09:09 PM Herwin Weststrate via RT wrote:
Show quoted text> Thu Nov 01 15:09:09 2012: Request 80552 was acted upon.
> Transaction: Ticket created by herwin@snt.utwente.nl
> Queue: Digest-MD4
> Subject: md4_base64 generates non-valid base64 output
> Broken in: (no value)
> Severity: (no value)
> Owner: Nobody
> Requestors: herwin@snt.utwente.nl
> Status: new
> Ticket <URL:
https://rt.cpan.org/Ticket/Display.html?id=80552 >
>
>
> $ perl -MDigest::MD4 -E 'say Digest::MD4::md4_base64("")' | base64 -d | xxd
> base64: 0000000: 31d6 cfe0 d16a e931 b73c 59d7 e0c0 89c0 1....j.1.<Y.....
> invalid input
>
> The output of md4_base64 is alway 22 characters. A valid base64 strings
> needs a multiple of 4 characters, the "=" is used to fill the gaps. The
> method md4_base64 therefore should append "==" to the generated string.
--
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