diff options
Diffstat (limited to 'sha1/test')
| -rwxr-xr-x | sha1/test/totp.pl | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sha1/test/totp.pl b/sha1/test/totp.pl index 5903133..cd40aa0 100755 --- a/sha1/test/totp.pl +++ b/sha1/test/totp.pl @@ -171,7 +171,11 @@ sub generateCurrentNumber { my $offset = hex(substr($hmac, -1)); print "offset=",$offset,"\n"; # take the 4 bytes (8 hex chars) at the offset (* 2 for hex), and drop the high bit - my $encrypted = hex(substr($hmac, $offset * 2, 8)) & 0x7fffffff; + my $hex = substr($hmac, $offset * 2, 8); + my $encrypted = hex($hex) & 0x7fffffff; + + print "hex=",sprintf("%08x", $encrypted),"\n"; + # the token is then the last 6 digits in the number my $token = $encrypted % 1000000; |