> How can I calculate the MD5 message digest of a Unicode string in Perl
> 5.8? The MD5 hash algorithm naturally expects a sequence of bytes as its
> input, and I have a string with a sequence of characters. I tried
>
> $ perl -e 'use Digest::MD5 qw(md5_hex); print md5_hex("\x{20ac}");'
> Wide character in subroutine entry at -e line 1.
I'd do something like that:
use Encode;
use Digest::MD5 qw(md5_hex);
sub md5_hex
{
my $string = shift;
Encode::_utf8_off ($string);
return md5_hex ($string);
}
In this case setting the UTF8 flag off is OK because $string is a copy
of the original string which won't be used outside of the subroutine.
You have to be careful when playing with Encode::is_utf8()
Encode::_utf8_on() and Encode::_utf8_off() but it's very handy.
Best regards,
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