If     print Dumper $file; is producing:

$VAR1 = [
          {
            'longname' => 'drwxr-xr-x    2 1ae2ets  fq     4096 Sep 14
+  2007 .',
...
[download]

Then you apparently have an AoAoH, not an AoH as you appear to think. So, in order to process the AoAoH, you would need to code something like:

foreach $AoFiles (@files) {
    foreach $file ( @{ $AoFiles } ) {
        foreach $t ( keys %$file ){
            print "\nt= $t v=" . $file->{$t};
        }
    }
    ...
[download]

Of course, depending how you are obtaining @files, it may well be that the outer loop above will only iterate once. The likely scenario is that you are doing something like:

@files = someSubOrMethodThatReturnsAnAoHReference();
...
[download]

When you should be doing:

$filesRef = someSubOrMethodThatReturnsAnAoHReference();

foreach $file ( @$filesRef ) {
    print Dumper $file;
    foreach $t(keys %$file){
        print "\nt= $t v=" . $file->{$t};
    }
...
[download]