Add fill for encryption schemes.

diff --git a/Catacomb/Crypto.pm b/Catacomb/Crypto.pm
index c4e886d..85c7a3c 100644 (file)
--- a/Catacomb/Crypto.pm
+++ b/Catacomb/Crypto.pm
@@ -78,6 +78,19 @@ sub encrypt {
   return $c->encrypt($p);
 }
 
+sub fill {
+  croak("Usage: Catacomb::CipherClass::fill(cc, k, [iv], len)")
+    if @_ < 3 || @_ > 4;
+  my ($cc, $k, $iv, $len) = @_;
+  if (@_ == 3) {
+    $len = $iv;
+    $iv = undef;
+  }
+  my $c = $cc->init($k);
+  $c->setiv($iv) if defined($iv);
+  return $c->fill($len);
+}
+
 sub decrypt {
   croak("Usage: Catacomb::CipherClass::decrypt(cc, k, [iv], cipher)")
     if @_ < 3 || @_ > 4;
@@ -91,6 +104,19 @@ sub decrypt {
   return $c->decrypt($p);
 }
 
+sub filldecrypt {
+  croak("Usage: Catacomb::CipherClass::filldecrypt(cc, k, [iv], len)")
+    if @_ < 3 || @_ > 4;
+  my ($cc, $k, $iv, $len) = @_;
+  if (@_ == 3) {
+    $len = $iv;
+    $iv = undef;
+  }
+  my $c = $cc->init($k);
+  $c->setiv($iv) if defined($iv);
+  return $c->filldecrypt($len);
+}
+
 package Catacomb::HashClass;
 use Carp;
 

diff --git a/algorithms.xs b/algorithms.xs
index 6a01f15..1c9f5f1 100644 (file)
--- a/algorithms.xs
+++ b/algorithms.xs
@@ -227,6 +227,19 @@ encrypt(c, plain)
        RETVAL
 
 SV *
+fill(c, len)
+       gcipher *c
+       size_t len;
+       CODE:
+       RETVAL = NEWSV(0, len ? len : 1);
+       memset(SvPVX(RETVAL), 0, len);
+       c->ops->encrypt(c, SvPVX(RETVAL), SvPVX(RETVAL), len);
+       SvCUR_set(RETVAL, len);
+       SvPOK_on(RETVAL);
+       OUTPUT:
+       RETVAL
+
+SV *
 decrypt(c, cipher)
        gcipher *c
        SV *cipher
@@ -243,6 +256,19 @@ decrypt(c, cipher)
        RETVAL
 
 SV *
+filldecrypt(c, len)
+       gcipher *c
+       size_t len;
+       CODE:
+       RETVAL = NEWSV(0, len ? len : 1);
+       memset(SvPVX(RETVAL), 0, len);
+       c->ops->decrypt(c, SvPVX(RETVAL), SvPVX(RETVAL), len);
+       SvCUR_set(RETVAL, len);
+       SvPOK_on(RETVAL);
+       OUTPUT:
+       RETVAL
+
+SV *
 setiv(c, iv)
        gcipher *c
        SV *iv