### Functional interface: use Crypt::Digest::Keccak256 qw( keccak256 keccak256_hex keccak256_b64 keccak256_b64u keccak256_file keccak256_file_hex keccak256_file_b64 keccak256_file_b64u ); # calculate digest from string/buffer $keccak256_raw = keccak256('data string'); $keccak256_hex = keccak256_hex('data string'); $keccak256_b64 = keccak256_b64('data string'); $keccak256_b64u = keccak256_b64u('data string'); # calculate digest from file $keccak256_raw = keccak256_file('filename.dat'); $keccak256_hex = keccak256_file_hex('filename.dat'); $keccak256_b64 = keccak256_file_b64('filename.dat'); $keccak256_b64u = keccak256_file_b64u('filename.dat'); # calculate digest from filehandle $keccak256_raw = keccak256_file(*FILEHANDLE); $keccak256_hex = keccak256_file_hex(*FILEHANDLE); $keccak256_b64 = keccak256_file_b64(*FILEHANDLE); $keccak256_b64u = keccak256_file_b64u(*FILEHANDLE); ### OO interface: use Crypt::Digest::Keccak256; $d = Crypt::Digest::Keccak256->new; $d->add('any data'); $d->addfile('filename.dat'); $d->addfile(*FILEHANDLE); $result_raw = $d->digest; # raw bytes $result_hex = $d->hexdigest; # hexadecimal form $result_b64 = $d->b64digest; # Base64 form $result_b64u = $d->b64udigest; # Base64 URL Safe form
You can export selected functions:
use Crypt::Digest::Keccak256 qw(keccak256 keccak256_hex keccak256_b64 keccak256_b64u keccak256_file keccak256_file_hex keccak256_file_b64 keccak256_file_b64u);
Or all of them at once:
use Crypt::Digest::Keccak256 ':all';
$keccak256_raw = keccak256('data string'); #or $keccak256_raw = keccak256('any data', 'more data', 'even more data');
$keccak256_hex = keccak256_hex('data string'); #or $keccak256_hex = keccak256_hex('any data', 'more data', 'even more data');
$keccak256_b64 = keccak256_b64('data string'); #or $keccak256_b64 = keccak256_b64('any data', 'more data', 'even more data');
$keccak256_b64url = keccak256_b64u('data string'); #or $keccak256_b64url = keccak256_b64u('any data', 'more data', 'even more data');
$keccak256_raw = keccak256_file('filename.dat'); #or $keccak256_raw = keccak256_file(*FILEHANDLE);
$keccak256_hex = keccak256_file_hex('filename.dat'); #or $keccak256_hex = keccak256_file_hex(*FILEHANDLE);
BEWARE: You have to make sure that the filehandle is in binary mode before you pass it as argument to the addfile() method.
$keccak256_b64 = keccak256_file_b64('filename.dat'); #or $keccak256_b64 = keccak256_file_b64(*FILEHANDLE);
$keccak256_b64url = keccak256_file_b64u('filename.dat'); #or $keccak256_b64url = keccak256_file_b64u(*FILEHANDLE);
$d = Crypt::Digest::Keccak256->new();
$d->clone();
$d->reset();
$d->add('any data'); #or $d->add('any data', 'more data', 'even more data');
$d->addfile('filename.dat'); #or $d->addfile(*FILEHANDLE);
$d->add_bits($bit_string); # e.g. $d->add_bits("111100001010"); #or $d->add_bits($data, $nbits); # e.g. $d->add_bits("\xF0\xA0", 16);
$d->hashsize; #or Crypt::Digest::Keccak256->hashsize(); #or Crypt::Digest::Keccak256::hashsize();
$result_raw = $d->digest();
$result_hex = $d->hexdigest();
$result_b64 = $d->b64digest();
$result_b64url = $d->b64udigest();