| … | |
… | |
| 442 | These methods are provided for L<Crypt::CBC> compatibility and simply |
442 | These methods are provided for L<Crypt::CBC> compatibility and simply |
| 443 | return C<32> and C<64>, respectively. |
443 | return C<32> and C<64>, respectively. |
| 444 | |
444 | |
| 445 | Note that it is pointless to use Spritz with L<Crypt::CBC>, as Spritz is |
445 | Note that it is pointless to use Spritz with L<Crypt::CBC>, as Spritz is |
| 446 | not a block cipher and already provides an appropriate mode. |
446 | not a block cipher and already provides an appropriate mode. |
|
|
447 | |
|
|
448 | =back |
|
|
449 | |
|
|
450 | |
|
|
451 | =head2 THE Crypt::Spritz::Cipher CLASS |
|
|
452 | |
|
|
453 | This class is pretty much the same as the C<Crypt::Spritz::Cipher::XOR> |
|
|
454 | class, with two differences: first, it implements the "standard" Spritz |
|
|
455 | encryption algorithm, and second, while this variant is easier to analyze |
|
|
456 | mathematically, there is little else to recommend it for, as it is slower, |
|
|
457 | and requires lots of code duplication code. |
|
|
458 | |
|
|
459 | So unless you need to be compatible with another implementation that does |
|
|
460 | not offer the XOR variant, stick to C<Crypt::Spritz::Cipher::XOR>. |
|
|
461 | |
|
|
462 | All the methods from C<Crypt::Spritz::Cipher::XOR> are available, except |
|
|
463 | C<crypt>, which has been replaced by separate C<encrypt> and C<decrypt> |
|
|
464 | methods: |
|
|
465 | |
|
|
466 | =over 4 |
|
|
467 | |
|
|
468 | =item $encrypted = $cipher->encrypt ($cleartext) |
|
|
469 | |
|
|
470 | =item $cleartext = $cipher->decrypt ($encrypted) |
|
|
471 | |
|
|
472 | Really the same as C<Crypt::Spritz::Cipher::XOR>, except you need separate |
|
|
473 | calls and code for encryption and decryption. |
| 447 | |
474 | |
| 448 | =back |
475 | =back |
| 449 | |
476 | |
| 450 | |
477 | |
| 451 | =head2 THE Crypt::Spritz::AEAD::XOR CLASS |
478 | =head2 THE Crypt::Spritz::AEAD::XOR CLASS |
| … | |
… | |
| 582 | } |
609 | } |
| 583 | |
610 | |
| 584 | =back |
611 | =back |
| 585 | |
612 | |
| 586 | |
613 | |
|
|
614 | =head2 THE Crypt::Spritz::AEAD CLASS |
|
|
615 | |
|
|
616 | This class is pretty much the same as the C<Crypt::Spritz::AEAD::XOR> |
|
|
617 | class, with two differences: first, it implements the "standard" Spritz |
|
|
618 | encryption algorithm, and second, while this variant is easier to analyze |
|
|
619 | mathematically, there is little else to recommend it for, as it is slower, |
|
|
620 | and requires lots of code duplication code. |
|
|
621 | |
|
|
622 | So unless you need to be compatible with another implementation that does |
|
|
623 | not offer the XOR variant, stick to C<Crypt::Spritz::AEAD::XOR>. |
|
|
624 | |
|
|
625 | All the methods from C<Crypt::Spritz::AEAD::XOR> are available, except |
|
|
626 | C<crypt>, which has been replaced by separate C<encrypt> and C<decrypt> |
|
|
627 | methods: |
|
|
628 | |
|
|
629 | =over 4 |
|
|
630 | |
|
|
631 | =item $encrypted = $cipher->encrypt ($cleartext) |
|
|
632 | |
|
|
633 | =item $cleartext = $cipher->decrypt ($encrypted) |
|
|
634 | |
|
|
635 | Really the same as C<Crypt::Spritz::AEAD::XOR>, except you need separate |
|
|
636 | calls and code for encryption and decryption, but you have the same |
|
|
637 | limitations on usage. |
|
|
638 | |
|
|
639 | =back |
|
|
640 | |
|
|
641 | |
| 587 | =head1 SEE ALSO |
642 | =head1 SEE ALSO |
| 588 | |
643 | |
| 589 | L<http://people.csail.mit.edu/rivest/pubs/RS14.pdf>. |
644 | L<http://people.csail.mit.edu/rivest/pubs/RS14.pdf>. |
| 590 | |
645 | |
| 591 | =head1 SECURITY CONSIDERATIONS |
646 | =head1 SECURITY CONSIDERATIONS |
