rewrite to use libkeccak2

Signed-off-by: Mattias Andrée <maandree@operamail.com>

3 files changed, 359 insertions, 1414 deletions

diff --git a/src/autopasswd.c b/src/autopasswd.c
index d954024..c82f475 100644
--- a/src/autopasswd.c
+++ b/src/autopasswd.c
@@ -23,8 +23,7 @@
 
 #include <passphrase.h>
 #include <argparser.h>
-
-#include "sha3.h"
+#include <libkeccak.h>
 
 
 
@@ -46,44 +45,24 @@
 /**
  * The radix 64 characters (66 characters), the two last ones are for padding
  */
-#ifndef BASE64
-# define BASE64 "0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM,.-="
-#endif
+#define BASE64  "0123456789qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM,.-="
 
 /**
  * The number of squeezes to do at bump level zero
  */
-#ifndef KECCAK_SQUEEZES
-# define KECCAK_SQUEEZES  300000
-#endif
-
-/**
- * The default output parameter for the Keccak sponge
- */
-#ifndef KECCAK_OUTPUT
-# define KECCAK_OUTPUT  512
-#endif
-
-/**
- * The default state size parameter for the Keccak sponge
- */
-#ifndef KECCAK_STATE_SIZE
-# define KECCAK_STATE_SIZE  1600
-#endif
+#define DEFAULT_SQUEEZES  300000
 
 /**
  * The number of addition squeezes to perform per bump level
  */
-#ifndef BUMP_LEVEL_MULTIPLIER
-# define BUMP_LEVEL_MULTIPLIER  5000
-#endif
+#define BUMP_LEVEL_MULTIPLIER  5000
 
 
 /**
- * The bitrate parameter for the Keccak sponge when hashing master passphrase
+ * The rate parameter for the Keccak sponge when hashing master passphrase
  */
-#ifndef MASTER_PASSPHRASE_KECCAK_BITRATE
-# define MASTER_PASSPHRASE_KECCAK_BITRATE  576
+#ifndef MASTER_PASSPHRASE_KECCAK_RATE
+# define MASTER_PASSPHRASE_KECCAK_RATE  576
 #endif
 
 /**
@@ -107,99 +86,123 @@
 # define MASTER_PASSPHRASE_KECCAK_SQUEEZES  10000
 #endif
 
+
+
+#define USER_ERROR(string)				\
+  (fprintf(stderr, "%s: %s.\n", execname, string), 1)
+
+#define ADD(arg, desc, ...)								\
+  (arg ? args_add_option(args_new_argumented(NULL, arg, 0, __VA_ARGS__, NULL), desc)	\
+   : args_add_option(args_new_argumentless(NULL, 0, __VA_ARGS__, NULL), desc))
+
+#define LAST(arg)					\
+  (args_opts_get(arg)[args_opts_get_count(arg) - 1])
+
+#define t(expr)  if ((r = (expr)))  goto fail
+
+#define xfree(s)  (free(s), s = NULL)
+
+
+
 /**
- * The hexadecimal alphabet
+ * `argv[0]` from `main`
  */
-#ifndef HEXADECA
-# define HEXADECA  "0123456789abcdef"
-#endif
+static char* execname;
 
 
 
-static char* last_arg(char* arg)
+/**
+ * Convert `libkeccak_generalised_spec_t` to `libkeccak_spec_t` and check for errors
+ * 
+ * @param   gspec  See `libkeccak_degeneralise_spec`
+ * @param   spec   See `libkeccak_degeneralise_spec`
+ * @return         Zero on success, an appropriate exit value on error
+ */
+static int make_spec(libkeccak_generalised_spec_t* gspec, libkeccak_spec_t* spec)
 {
-  return *(args_opts_get(arg) + (args_opts_get_count(arg) - 1));
+  int r;
+  
+#define TEST(CASE, STR)  case LIBKECCAK_GENERALISED_SPEC_ERROR_##CASE:  return USER_ERROR(STR)
+  if (r = libkeccak_degeneralise_spec(gspec, spec), r)
+    switch (r)
+      {
+      TEST (STATE_NONPOSITIVE,      "the state size must be positive");
+      TEST (STATE_TOO_LARGE,        "the state size is too large, may not exceed 1600");
+      TEST (STATE_MOD_25,           "the state size must be a multiple of 25");
+      TEST (WORD_NONPOSITIVE,       "the word size must be positive");
+      TEST (WORD_TOO_LARGE,         "the word size is too large, may not exceed 64");
+      TEST (STATE_WORD_INCOHERENCY, "the state size must be exactly 25 times the word size");
+      TEST (CAPACITY_NONPOSITIVE,   "the capacity must be positive");
+      TEST (CAPACITY_MOD_8,         "the capacity must be a multiple of 8");
+      TEST (BITRATE_NONPOSITIVE,    "the rate must be positive");
+      TEST (BITRATE_MOD_8,          "the rate must be a multiple of 8");
+      TEST (OUTPUT_NONPOSITIVE,     "the output size must be positive");
+      default:
+	return USER_ERROR("unknown error in algorithm parameters");
+      }
+#undef TEST
+  
+#define TEST(CASE, STR)  case LIBKECCAK_SPEC_ERROR_##CASE:  return USER_ERROR(STR)
+  if (r = libkeccak_spec_check(spec), r)
+    switch (r)
+      {
+      TEST (BITRATE_NONPOSITIVE,  "the rate size must be positive");
+      TEST (BITRATE_MOD_8,        "the rate must be a multiple of 8");
+      TEST (CAPACITY_NONPOSITIVE, "the capacity must be positive");
+      TEST (CAPACITY_MOD_8,       "the capacity must be a multiple of 8");
+      TEST (OUTPUT_NONPOSITIVE,   "the output size must be positive");
+      TEST (STATE_TOO_LARGE,      "the state size is too large, may not exceed 1600");
+      TEST (STATE_MOD_25,         "the state size must be a multiple of 25");
+      TEST (WORD_NON_2_POTENT,    "the word size must be a power of 2");
+      TEST (WORD_MOD_8,           "the word size must be a multiple of 8");
+      default:
+	return USER_ERROR("unknown error in algorithm parameters");
+      }
+#undef TEST
+  
+  return 0;
 }
 
 
 /**
- * Here we go!
+ * Parse the command line arguments
+ * 
+ * @param   argc        The number of command line argumnets
+ * @param   argv        Command line argumnets
+ * @param   gspec       Output parameter for the algorithm parameters, must already be initialised
+ * @param   squeezes    Output parameter for the number of squeezes to perform, must already have default value
+ * @param   bump_level  Output parameter for the bump level, must already be zero
+ * @param   clear_mode  Output parameter for the clear mode setting, must already be zero
+ * @param   verbose     Output parameter for the verbosity setting, must already be zero
+ * @return              Zero on success, an appropriate exit value on error, however -1 if
+ *                      the program should exit with value zero
  */
-int main(int argc, char** argv)
+static int parse_cmdline(int argc, char* argv[], libkeccak_generalised_spec_t* gspec,
+			 long* squeezes, long* bump_level, int* clear_mode, int* verbose)
 {
-  size_t site_size = 64;
-  long bump_level = 0;
-  int clear_mode = 0;
-  int verbose_mode = 0;
-  long keccak_output_ = KECCAK_OUTPUT;
-  long keccak_state_size_ = KECCAK_STATE_SIZE;
-  long keccak_capacity_ = keccak_state_size_ - (keccak_output_ << 1);
-  long keccak_bitrate_ = keccak_state_size_ - keccak_capacity_;
-  long keccak_squeezes = KECCAK_SQUEEZES;
-  int output__ = 0;
-  int state_size__ = 0;
-  int capacity__ = 0;
-  int bitrate__ = 0;
-  int word_size__ = 0;
-  int squeezes__ = 0;
-  long output_, keccak_output;
-  long state_size_, keccak_state_size;
-  long capacity_, keccak_capacity;
-  long bitrate_, keccak_bitrate;
-  long word_size_, keccak_word_size;
-  long squeezes_;
-  byte* site;
-  char* passphrase;
-  byte* passphrase_hash;
-  int_fast8_t* digest;
-  char* base64;
-  size_t ptr64;
-  size_t ptr;
-  char* master_passphrase_hash;
-  size_t passphrase_n;
-  size_t site_n;
-  
-  
-  /* Parse command line arguments. */
   args_init("Reproducable password generator", "autopasswd [options...]",
-	    "TODO", 0, 1, 0, args_standard_abbreviations);
+	    NULL, NULL, 1, 0, args_standard_abbreviations);
   
-  args_add_option(args_new_argumentless(NULL, 0, "-h", "-?", "--help", NULL),
-		  "Display this help message");
-  args_add_option(args_new_argumentless(NULL, 0, "+c", "--copyright", "--copying", NULL),
-		  "Display copyright information");
-  args_add_option(args_new_argumentless(NULL, 0, "+w", "--warranty", NULL),
-		  "Display warranty disclaimer");
-  args_add_option(args_new_argumentless(NULL, 0, "-v", "--verbose", NULL),
-		  "Display extra information");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-b", "--bump-level", NULL),
-		  "Select bump level, can contain + or - to perform accumulated adjustment");
-  args_add_option(args_new_argumentless(NULL, 0, "-c", "--clear-mode", NULL),
-		  "Do not hide the output, but rather make it ease to pass into another program\n"
-		  "Use twice to suppress terminal line break");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-O", "--output", NULL),
-		  "Select output parameter for Keccak sponge");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-S", "--state-size", NULL),
-		  "Select state size parameter for Keccak sponge");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-C", "--capacity", NULL),
-		  "Select capacity parameter for Keccak sponge");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-R", "--rate", "--bitrate", NULL),
-		  "Select bitrate parameter for Keccak sponge");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-W", "--word-size", NULL),
-		  "Select word size parameter for Keccak sponge");
-  args_add_option(args_new_argumented(NULL, "INT", 0, "-Z", "--squeezes", NULL),
-		  "Select the number squeezes performe on the Keccak sponge at bump level zero");
+  ADD(NULL,       "Display option summary",                         "-h", "-?", "--help");
+  ADD(NULL,       "Display copyright information",                  "+c", "--copyright", "--copying");
+  ADD(NULL,       "Display warranty disclaimer",                    "+w", "--warranty");
+  ADD(NULL,       "Display extra information",                      "-v", "--verbose");
+  ADD(NULL,       "Do not hide the output, but rather make it ease to pass into another program\n"
+                  "Use twice to suppress terminal line break",      "-c", "--clear-mode");
+  ADD("LEVEL",    "Select bump level, can contain + or - to perform accumulated adjustment",
+                                                                    "-b", "--bump-level");
+  ADD("RATE",     "Select rate parameter for Keccak sponge",        "-R", "--bitrate", "--rate");
+  ADD("CAPACITY", "Select capacity parameter for Keccak sponge",    "-C", "--capacity");
+  ADD("SIZE",     "Select output parameter for Keccak sponge",      "-N", "-O", "--output-size", "--output");
+  ADD("SIZE",     "Select state size parameter for Keccak sponge",  "-S", "-B", "--state-size", "--state");
+  ADD("SIZE",     "Select word size parameter for Keccak sponge",   "-W", "--word-size", "--word");
+  ADD("COUNT",    "Select the number squeezes performed on the Keccak sponge at bump level zero",
+                                                                    "-Z", "--squeezes");
   
   args_parse(argc, argv);
-  args_support_alternatives();
   
-  if (args_opts_used("--help"))
-    {
-      args_help();
-      args_dispose();
-      return 0;
-    }
-  if (args_opts_used("--copyright"))
+  if (args_opts_used("-h"))  return args_help(0), args_dispose(), -1;
+  if (args_opts_used("+c"))
     {
       printf("autopasswd – Reproducable password generator\n");
       printf("\n");
@@ -218,393 +221,309 @@ int main(int argc, char** argv)
       printf("You should have received a copy of the GNU Affero General Public License\n");
       printf("along with this program.  If not, see <http://www.gnu.org/licenses/>.\n");
       args_dispose();
-      return 0;
+      return -1;
     }
-  if (args_opts_used("--warranty"))
+  if (args_opts_used("+w"))
     {
       printf("This program is distributed in the hope that it will be useful,\n");
       printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");
       printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n");
       printf("GNU Affero General Public License for more details.\n");
       args_dispose();
-      return 0;
+      return -1;
     }
-  if (args_opts_used("--clear-mode"))
-    {
-      clear_mode = (int)args_opts_get_count("--clear-mode");
-    }
-  if (args_opts_used("--verbose"))
-    {
-      verbose_mode = 1;
-    }
-  if (args_opts_used("--bump-level"))
+  
+  if (args_opts_used("-R"))  gspec->bitrate    = atol(LAST("-R"));
+  if (args_opts_used("-C"))  gspec->capacity   = atol(LAST("-C"));
+  if (args_opts_used("-N"))  gspec->output     = atol(LAST("-N"));
+  if (args_opts_used("-S"))  gspec->state_size = atol(LAST("-S"));
+  if (args_opts_used("-W"))  gspec->word_size  = atol(LAST("-W"));
+  if (args_opts_used("-Z"))  *squeezes         = atol(LAST("-Z"));
+  if (args_opts_used("-v"))  *verbose          = 1;
+  if (args_opts_used("-c"))  *clear_mode       = (int)args_opts_get_count("-c");
+  if (args_opts_used("-b"))
     {
-      size_t n = (size_t)args_opts_get_count("--bump-level");
-      char** arr = args_opts_get("--bump-level");
+      size_t i, n = (size_t)args_opts_get_count("-b");
+      char** arr = args_opts_get("-b");
       char* arg;
-      for (ptr = 0; ptr < n; ptr++)
-	if ((arg = *(arr + ptr)))
+      for (i = 0; i < n; i++)
+	if ((arg = arr[i]))
 	  switch (*arg)
 	    {
-	    case 0:
-	      break;
-	    case '+':
-	      bump_level += atol(arg + 1);
-	      break;
-	    case '-':
-	      bump_level -= atol(arg + 1);
-	      break;
-	    default:
-	      bump_level = atol(arg);
-	      break;
+	    case 0:                                   break;
+	    case '+':  *bump_level += atol(arg + 1);  break;
+	    case '-':  *bump_level -= atol(arg + 1);  break;
+	    default:   *bump_level = atol(arg);       break;
 	    }
     }
-  if (args_opts_used("--output"))
-    {
-      output__ = 1;
-      output_ = atol(last_arg("--output"));
-    }
-  if (args_opts_used("--state-size"))
-    {
-      state_size__ = 1;
-      state_size_ = atol(last_arg("--state-size"));
-    }
-  if (args_opts_used("--capacity"))
-    {
-      capacity__ = 1;
-      capacity_ = atol(last_arg("--capacity"));
-    }
-  if (args_opts_used("--bitrate"))
-    {
-      bitrate__ = 1;
-      bitrate_ = atol(last_arg("--bitrate"));
-    }
-  if (args_opts_used("--word-size"))
-    {
-      word_size__ = 1;
-      word_size_ = atol(last_arg("--word-size"));
-    }
-  if (args_opts_used("--squeezes"))
-    {
-      squeezes__ = 1;
-      squeezes_ = atol(last_arg("--squeezes"));
-    }
   
   args_dispose();
+  return 0;
+}
+
+
+/**
+ * Hash, and display, master passphrase so to hint
+ * the user whether it as typed correctly or not
+ * (important when creating a passphrase)
+ * 
+ * @param   passphrase  The master passphrase
+ * @return              Zero on success, an appropriate exit value on error
+ */
+static int hash_master_passphrase(const char* passphrase)
+{
+#define SQUEEZES  MASTER_PASSPHRASE_KECCAK_SQUEEZES
+  libkeccak_spec_t spec;
+  libkeccak_state_t state;
+  char hashsum[MASTER_PASSPHRASE_KECCAK_OUTPUT / 8];
+  char hexsum[MASTER_PASSPHRASE_KECCAK_OUTPUT / 4 + 1];
   
-  /* Get Keccak sponge parameters. */
-  if (squeezes__)
-    {
-      keccak_squeezes = squeezes_;
-      if (keccak_squeezes == 0)
-	{
-	  fprintf(stderr, "%s: do you really want your passphrase included in plain text?", *argv);
-	  return 1;
-	}
-      else if (keccak_squeezes < 1)
-	{
-	  fprintf(stderr, "%s: the squeeze count must be positive.", *argv);
-	  return 1;
-	}
-    }
-  if (state_size__)
-    {
-      keccak_state_size = state_size_;
-      if ((keccak_state_size <= 0) || (keccak_state_size > 1600) || (keccak_state_size % 25))
-	{
-	  fprintf(stderr, "%s: the state size must be a positive multiple of 25 and is limited to 1600.", *argv);
-	  return 1;
-	}
-    }
-  if (word_size__)
-    {
-      keccak_word_size = word_size_;
-      if ((keccak_word_size <= 0) || (keccak_word_size > 64))
-	{
-	  fprintf(stderr, "%s: the word size must be positive and is limited to 64.", *argv);
-	  return 1;
-	}
-      if (state_size__ && (keccak_state_size != keccak_word_size * 25))
-	{
-	  fprintf(stderr, "%s: the state size must be 25 times of the word size.", *argv);
-	  return 1;
-	}
-      else if (state_size__ == 0)
-	{
-	  state_size__ = 1;
-	  keccak_state_size = keccak_word_size * 25;
-	}
-    }
-  if (capacity__)
-    {
-      keccak_capacity = capacity_;
-      if ((keccak_capacity <= 0) || (keccak_capacity & 7))
-	{
-	  fprintf(stderr, "%s: the capacity must be a positive multiple of 8.", *argv);
-	  return 1;
-	}
-    }
-  if (bitrate__)
-    {
-      keccak_bitrate = bitrate_;
-      if ((keccak_bitrate <= 0) || (keccak_bitrate & 7))
-	{
-	  fprintf(stderr, "%s: the bitrate must be a positive multiple of 8.", *argv);
-	  return 1;
-	}
-    }
-  if (output__)
-    {
-      keccak_output = output_;
-      if (keccak_output <= 0)
-	{
-	  fprintf(stderr, "%s: the output size must be positive.", *argv);
-	  return 1;
-	}
-    }
-  if ((bitrate__ | capacity__ | output__) == 0) /* state_size? */
-    {
-      keccak_state_size = state_size__ ? keccak_state_size : keccak_state_size_;
-      keccak_output = (((keccak_state_size << 5) / 100 + 7) >> 3) << 3;
-      keccak_bitrate = keccak_output << 1;
-      keccak_capacity = keccak_state_size - keccak_bitrate;
-      keccak_output = keccak_output < 8 ? 8 : keccak_output;
-    }
-  else if ((bitrate__ | capacity__) == 0) /* !output state_size? */
-    {
-      keccak_bitrate = keccak_bitrate_;
-      keccak_capacity = keccak_capacity_;
-      keccak_state_size = state_size__ ? keccak_state_size : (keccak_bitrate + keccak_capacity);
-    }
-  else if (bitrate__ == 0) /* !bitrate output? state_size? */
-    {
-      keccak_state_size = state_size__ ? keccak_state_size : keccak_state_size_;
-      keccak_bitrate = keccak_state_size - keccak_capacity;
-      keccak_output = output__ ? keccak_output : (keccak_capacity == 8 ? 8 : (keccak_capacity << 1));
-    }
-  else if (capacity__ == 0) /* !bitrate output? state_size? */
-    {
-      keccak_state_size = state_size__ ? keccak_state_size : keccak_state_size_;
-      keccak_capacity = keccak_state_size - keccak_bitrate;
-      keccak_output = output__ ? keccak_output : (keccak_capacity == 8 ? 8 : (keccak_capacity << 1));
-    }
-  else /* !bitrate !capacity output? state_size? */
-    {
-      keccak_state_size = state_size__ ? keccak_state_size : (keccak_bitrate + keccak_capacity);
-      keccak_output = output__ ? keccak_output : (keccak_capacity == 8 ? 8 : (keccak_capacity << 1));
-    }
-  if (keccak_bitrate > keccak_state_size)
-    {
-      fprintf(stderr, "%s: the bitrate must not be higher than the state size.", *argv);
-      return 1;
-    }
-  if (keccak_capacity > keccak_state_size)
-    {
-      fprintf(stderr, "%s: the capacity must not be higher than the state size.", *argv);
-      return 1;
-    }
-  if (keccak_bitrate + keccak_capacity != keccak_state_size)
-    {
-      fprintf(stderr, "%s: the sum of the bitrate and the capacity must equal the state size.", *argv);
-      return 1;
-    }
-  keccak_squeezes += bump_level * BUMP_LEVEL_MULTIPLIER;
-  if (keccak_squeezes < 1)
-    {
-      fprintf(stderr, "%s: bump level is too low.", *argv);
-      return 1;
-    }
-  keccak_word_size = keccak_state_size / 25;
+  spec.bitrate = MASTER_PASSPHRASE_KECCAK_RATE;
+  spec.capacity = MASTER_PASSPHRASE_KECCAK_CAPACITY;
+  spec.output = MASTER_PASSPHRASE_KECCAK_OUTPUT;
   
-  /* Display verbose information. */
-  if (verbose_mode)
-    {
-      fprintf(stderr, "Bump level: %li\n", bump_level);
-      fprintf(stderr, "Bitrate: %li\n", keccak_bitrate);
-      fprintf(stderr, "Capacity: %li\n", keccak_capacity);
-      fprintf(stderr, "Word size: %li\n", keccak_word_size);
-      fprintf(stderr, "State size: %li\n", keccak_state_size);
-      fprintf(stderr, "Output size: %li\n", keccak_output);
-      fprintf(stderr, "Squeezes (excluding bump level): %li\n",
-	      keccak_squeezes - bump_level * BUMP_LEVEL_MULTIPLIER);
-      fprintf(stderr, "Squeezes (including bump level): %li\n", keccak_squeezes);
-    }
+  if (libkeccak_spec_check(&spec) || (SQUEEZES <= 0))
+    return USER_ERROR("bad master passhprase hashing parameters, "
+		      "please recompile autopasswd with with proper "
+		      "values on MASTER_PASSPHRASE_KECCAK_RATE, "
+		      "MASTER_PASSPHRASE_KECCAK_CAPACITY, "
+		      "MASTER_PASSPHRASE_KECCAK_OUTPUT and "
+		      "MASTER_PASSPHRASE_KECCAK_SQUEEZES");
+  
+  if (libkeccak_state_initialise(&state, &spec))
+    return perror(execname), 2;
+  
+  if (libkeccak_digest(&state, passphrase, strlen(passphrase), 0, NULL, SQUEEZES == 1 ? hashsum : NULL))
+    return perror(execname), libkeccak_state_destroy(&state), 2;
+  if (SQUEEZES > 2)  libkeccak_fast_squeeze(&state, SQUEEZES - 2);
+  if (SQUEEZES > 1)  libkeccak_squeeze(&state, hashsum);
+  
+  libkeccak_state_destroy(&state);
+  
+  libkeccak_behex_lower(hexsum, hashsum, sizeof(hashsum) / sizeof(char));
+  fprintf(stderr, "%s: master passphrase hash: %s\n", execname, hexsum);
+  
+  return 0;
+#undef SQUEEZES
+}
+
+
+/**
+ * Ask the user for the site
+ * 
+ * @param   site  Output parameter for the site
+ * @return        Zero on success, an appropriate exit value on error
+ */
+static int get_site(char** site)
+{
+  size_t size = 64;
+  size_t ptr = 0;
+  char* buf = malloc(size * sizeof(char));
+  if (buf == NULL)
+    return perror(execname), 2;
   
-  /* Read site. */
-  site = malloc(site_size * sizeof(byte));
-  if (site == NULL)
-    {
-      perror(*argv);
-      passphrase_disable_echo();
-      return 1;
-    }
   fprintf(stderr, "%s", SITE_PROMPT_STRING);
   fflush(stderr);
-  for (site_n = 0;;)
+  
+  for (;;)
     {
       int c = getchar();
-      if (site_n == site_size)
+      if (ptr == size)
 	{
-	  site = realloc(site, (site_size <<= 1) * sizeof(byte));
-	  if (site == NULL)
-	    {
-	      perror(*argv);
-	      passphrase_disable_echo();
-	      return 1;
-	    }
+	  char* new = realloc(buf, (size <<= 1) * sizeof(char));
+	  if (new == NULL)
+	    return perror(execname), free(buf), 2;
 	}
-      if (c == -1)
-	{
-	  free(site);
-	  passphrase_disable_echo();
-	  return 0;
-	}
-      if (c == '\n')
+      if ((c < 0) || (c == '\n'))
 	break;
-      *(site + site_n++) = (byte)c;
+      buf[ptr++] = (char)c;
     }
   
-  /* Disable echoing. (Should be done as soon as possible after reading site.) */
-  passphrase_disable_echo();
-  
-  /* Initialise Keccak sponge. */
-  sha3_initialise(MASTER_PASSPHRASE_KECCAK_BITRATE,
-		  MASTER_PASSPHRASE_KECCAK_CAPACITY,
-		  MASTER_PASSPHRASE_KECCAK_OUTPUT);
-  
-  /* Read passphrease. */
-  fprintf(stderr, "%s", PASSPHRASE_PROMPT_STRING);
-  fflush(stderr);
-  passphrase = passphrase_read();
-  if (passphrase == NULL)
+  if (ptr == size)
     {
-      perror(*argv);
-      passphrase_reenable_echo();
-      sha3_dispose();
-      free(site);
-      return 1;
+      char* new = realloc(buf, (size += 1) * sizeof(char));
+      if (new == NULL)
+	return perror(execname), free(buf), 2;
     }
+  buf[ptr] = '\0';
   
-  /* Reset terminal settings. */
+  *site = buf;
+  return 0;
+}
+
+
+/**
+ * Ask the user for the master passphrase
+ * 
+ * @param   passphrase  Output parameter for the passphrase
+ * @return              Zero on success, an appropriate exit value on error
+ */
+static int get_master_passphrase(char** passphrase)
+{
+  passphrase_disable_echo();
+  fprintf(stderr, "%s", PASSPHRASE_PROMPT_STRING);
+  fflush(stderr);
+  *passphrase = passphrase_read();
+  if (*passphrase == NULL)
+    perror(execname);
   passphrase_reenable_echo();
+  return *passphrase ? 0 : 2;
+}
+
+
+/**
+ * Hash the master password hash and site into a password
+ * 
+ * @param   spec        Hashing parameters
+ * @param   squeezes    The number of squeezes to perform
+ * @param   passphrase  The master passphrase
+ * @param   site        The site
+ * @param   hash        Output paramter for the raw password
+ * @return              Zero on success, an appropriate exit value on error
+ */
+static int calculate_raw_password(const libkeccak_spec_t* spec, long squeezes,
+				  const char* passphrase, const char* site, char** hash)
+{
+  libkeccak_state_t state;
+  char* hashsum = NULL;
   
-  /* Measure passphrase length. */
-  passphrase_n = strlen(passphrase);
-  
-  /* Translate password to sha3.h friendly format. */
-  passphrase_hash = malloc((passphrase_n + 1) * sizeof(byte));
-  if (passphrase_hash == NULL)
-    {
-      perror(*argv);
-      memset(passphrase, 0, passphrase_n * sizeof(char));
-      free(passphrase);
-      return 1;
-    }
-  else
-    {
-      for (ptr = 0; ptr < passphrase_n + 1; ptr++)
-	*(passphrase_hash + ptr) = (byte)*(passphrase + ptr);
-      /* Wipe source password, however it is not yet secure to free it. (Should be done as sone as possible.) */
-      memset(passphrase, 0, passphrase_n * sizeof(char));
-    }
-  
-  /* Hash and display master passphrase so hint the user whether it as typed correctly or not. */
-  master_passphrase_hash = malloc((MASTER_PASSPHRASE_KECCAK_OUTPUT * 2 + 1) * sizeof(char));
-  if (master_passphrase_hash == NULL)
-    {
-      perror(*argv);
-      memset(passphrase_hash, 0, passphrase_n * sizeof(byte));
-      free(passphrase_hash);
-      free(passphrase);
-      return 1;
-    }
-  digest = sha3_digest(passphrase_hash, (long)passphrase_n, MASTER_PASSPHRASE_KECCAK_SQUEEZES == 1);
-  if (MASTER_PASSPHRASE_KECCAK_SQUEEZES > 2)
-    sha3_fastSqueeze(MASTER_PASSPHRASE_KECCAK_SQUEEZES - 2);
-  if (MASTER_PASSPHRASE_KECCAK_SQUEEZES > 1)
-    digest = sha3_squeeze();
-  for (ptr = 0; ptr < (MASTER_PASSPHRASE_KECCAK_OUTPUT + 7) / 8; ptr++)
-    {
-      uint8_t v = (uint8_t)*(digest + ptr);
-      *(master_passphrase_hash + ptr * 2 + 0) = HEXADECA[(v >> 4) & 15];
-      *(master_passphrase_hash + ptr * 2 + 1) = HEXADECA[(v >> 0) & 15];
-    }
-  *(master_passphrase_hash + ptr * 2) = 0;
-  fprintf(stderr, "%s: master passphrase hash: %s\n", *argv, master_passphrase_hash);
+  if (libkeccak_state_initialise(&state, spec))
+    return perror(execname), 2;
   
-  /* Reinitialise Keccak sponge. */
-  sha3_dispose();
-  sha3_initialise(keccak_bitrate, keccak_capacity, keccak_output);
+  if (hashsum = malloc((size_t)(spec->output / 8) * sizeof(char)), hashsum == NULL)
+    goto fail;
   
-  /* Add passphrase to Keccak sponge input. */
-  sha3_update(passphrase_hash, (long)passphrase_n);
+  if (libkeccak_update(&state, passphrase, strlen(passphrase)))
+    goto fail;
+  if (libkeccak_digest(&state, site, strlen(site), 0, NULL, squeezes == 1 ? hashsum : NULL))
+    goto fail;
+  if (squeezes > 2)  libkeccak_fast_squeeze(&state, squeezes - 2);
+  if (squeezes > 1)  libkeccak_squeeze(&state, hashsum);
   
-  /* Clear passphrase from memory. (Should be done as sone as possible.) */
-  memset(passphrase, 0, passphrase_n * sizeof(char));
-  free(passphrase_hash);
-  free(passphrase);
+  libkeccak_state_destroy(&state);
+  *hash = hashsum;
+  return 0;
+ fail:
+  perror(execname);
+  free(hashsum);
+  libkeccak_state_destroy(&state);
+  return 2;
+}
+
+
+/**
+ * base64-encode the password
+ * 
+ * @param   raw     The password
+ * @param   length  The length of the pasword
+ * @param   base64  Output parameter for the base64-encoded password
+ * @return          Zero on success, an appropriate exit value on error
+ */
+static int encode_base64(const char* raw, size_t length, char** base64)
+{
+  size_t ptr, ptr64, out_length = ((length + 2) / 3) * 4 + 2;
+  char* buf = malloc(out_length * sizeof(char));
   
-  /* Add site to Keccak sponge input. */
-  free(digest); /* (Should be done after wiping passphrase.) */
-  free(master_passphrase_hash); /* (Should be done after wiping passphrase.) */
-  digest = sha3_digest(site, (long)site_n, keccak_squeezes == 1);
+  if (*base64 = buf, buf == NULL)
+    return perror(execname), 2;
   
-  /* Release resources. */
-  free(site);
+  for (ptr = ptr64 = 0; ptr < length; ptr64 += 4)
+    {
+      uint8_t a = (uint8_t)(ptr < length ? raw[ptr++] : 0);
+      uint8_t b = (uint8_t)(ptr < length ? raw[ptr++] : 0);
+      uint8_t c = (uint8_t)(ptr < length ? raw[ptr++] : 0);
+      
+      uint32_t abc = ((uint32_t)a << 16) | ((uint32_t)b << 8) | ((uint32_t)c << 0);
+      
+      buf[ptr64 | 0] = BASE64[(abc >> (3 * 6)) & 63];
+      buf[ptr64 | 1] = BASE64[(abc >> (2 * 6)) & 63];
+      buf[ptr64 | 2] = BASE64[(abc >> (1 * 6)) & 63];
+      buf[ptr64 | 3] = BASE64[(abc >> (0 * 6)) & 63];
+    }
+  if (length % 3 == 1)  buf[ptr64++] = BASE64[64];
+  if (length % 3 == 2)  buf[ptr64++] = BASE64[65];
+  buf[ptr64++] = '\0';
   
-  /* Squeeze that sponge. */
-  if (keccak_squeezes > 2)
-    sha3_fastSqueeze(keccak_squeezes - 2);
-  if (keccak_squeezes > 1)
-    digest = sha3_squeeze();
+  return 0;
+}
+
+
+/**
+ * Here we go!
+ * 
+ * @param   argc  The number of command line argumnets
+ * @param   argv  Command line argumnets
+ * @return        Zero on success, 1 on user error, 2 on system error
+ */
+int main(int argc, char* argv[])
+{
+  int r, verbose = 0, clear_mode = 0;
+  libkeccak_generalised_spec_t gspec;
+  libkeccak_spec_t spec;
+  long squeezes = DEFAULT_SQUEEZES, bump_level = 0;
+  char* site = NULL;
+  char* passphrase = NULL;
+  char* raw_password = NULL;
+  char* base64 = NULL;
   
-  /* Release resources. */
-  sha3_dispose();
+  libkeccak_generalised_spec_initialise(&gspec);
+  execname = *argv;
   
-  /* Encode with base64 (no invalid character, shorter than hexadecimal.) */
-  base64 = malloc((4 * (((((size_t)keccak_output + 7) / 8) + 2) / 3) + 2) * sizeof(char));
-  if (base64 == NULL)
+  t (parse_cmdline(argc, argv, &gspec, &squeezes, &bump_level, &clear_mode, &verbose));
+  t (make_spec(&gspec, &spec));
+  if (squeezes <= 0)
     {
-      perror(*argv);
-      free(digest);
-      free(base64);
+      r = USER_ERROR("the squeeze count most be positive");
+      goto fail;
     }
-  for (ptr = ptr64 = 0; ptr < (size_t)((keccak_output + 7) / 8); ptr64 += 4)
+  
+  squeezes += bump_level * BUMP_LEVEL_MULTIPLIER;
+  
+  if (verbose)
     {
-      uint8_t a = (uint8_t)(ptr < (size_t)((keccak_output + 7) / 8) ? digest[ptr++] : 0);
-      uint8_t b = (uint8_t)(ptr < (size_t)((keccak_output + 7) / 8) ? digest[ptr++] : 0);
-      uint8_t c = (uint8_t)(ptr < (size_t)((keccak_output + 7) / 8) ? digest[ptr++] : 0);
-      
-      uint32_t abc = ((uint32_t)a << 16) | ((uint32_t)b << 8) | ((uint32_t)c << 0);
-      
-      base64[ptr64 | 0] = BASE64[(abc >> (3 * 6)) & 63];
-      base64[ptr64 | 1] = BASE64[(abc >> (2 * 6)) & 63];
-      base64[ptr64 | 2] = BASE64[(abc >> (1 * 6)) & 63];
-      base64[ptr64 | 3] = BASE64[(abc >> (0 * 6)) & 63];
+      fprintf(stderr,  "bump level: %li\n", bump_level);
+      fprintf(stderr,        "rate: %li\n", gspec.bitrate);
+      fprintf(stderr,    "capacity: %li\n", gspec.capacity);
+      fprintf(stderr, "output size: %li\n", gspec.output);
+      fprintf(stderr,  "state size: %li\n", gspec.state_size);
+      fprintf(stderr,   "word size: %li\n", gspec.word_size);
+      fprintf(stderr, "squeezes after bump level: %li\n", squeezes);
+      fprintf(stderr, "squeezes before bump level: %li\n",
+	      squeezes - bump_level * BUMP_LEVEL_MULTIPLIER);
     }
-  if ((((keccak_output + 7) / 8) % 3) == 1)  base64[ptr64++] = BASE64[64];
-  if ((((keccak_output + 7) / 8) % 3) == 2)  base64[ptr64++] = BASE64[65];
-  base64[ptr64++] = 0;
   
-  /* Display verbose information. */
-  if (verbose_mode)
+  t (get_site(&site));
+  t (get_master_passphrase(&passphrase));
+  t (hash_master_passphrase(passphrase));
+  
+  t (calculate_raw_password(&spec, squeezes, passphrase, site, &raw_password));
+  passphrase_wipe(passphrase, strlen(passphrase));
+  xfree(passphrase);
+  xfree(site);
+  
+  t (encode_base64(raw_password, (size_t)(spec.output / 8), &base64));
+  xfree(raw_password);
+  
+  if (verbose)
     {
-      fprintf(stderr, "Password length (before base64): %li\n", (keccak_output + 7) / 8);
-      fprintf(stderr, "Password length (after base64): %li\n", strlen(base64));
+      fprintf(stderr, "password length before base64: %li\n", spec.output / 8);
+      fprintf(stderr, "password length after base64: %li\n", strlen(base64));
     }
   
-  /* Print generated password. */
-  if (clear_mode > 1)
-    printf("%s", base64);
-  else if (clear_mode)
-    printf("%s\n", base64);
-  else
-    printf("\033[00m>\033[00;30;40m%s\033[00m<\n", base64);
+  if      (clear_mode > 1)  printf("%s", base64);
+  else if (clear_mode)      printf("%s\n", base64);
+  else                      printf("\033[00m>\033[08;30;40m%s\033[00m<\n", base64);
   
-  /* Release resources. */
-  free(digest);
   free(base64);
-  
   return 0;
+  
+ fail:
+  if (passphrase)
+    passphrase_wipe(passphrase, strlen(passphrase));
+  free(passphrase);
+  free(site);
+  free(raw_password);
+  free(base64);
+  return r < 0 ? 0 : r;
 }
 
diff --git a/src/sha3.c b/src/sha3.c
deleted file mode 100644
index ce35f38..0000000
--- a/src/sha3.c
+++ /dev/null
@@ -1,859 +0,0 @@
-/**
- * sha3sum – SHA-3 (Keccak) checksum calculator
- * 
- * Copyright © 2013, 2014  Mattias Andrée (maandree@member.fsf.org)
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- * 
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "sha3.h"
-
-
-#ifdef WITH_C99
-#  define static_inline static inline
-#else
-#  define static_inline inline
-#endif
-
-#ifdef WITH_THREADLOCAL
-#  define threadlocal __thread
-  /* This is compiler dependent, if your compiler does
-   * not support this you need to define __thread yourself. */
-#else
-#  define threadlocal /* no threading support */
-#endif
-
-#define null 0
-#define true 1
-#define false 0
-
-
-
-/**
- * Round contants
- */
-#ifdef WITH_C99
-static const llong RC[] = {
-  0x0000000000000001LL, 0x0000000000008082LL, 0x800000000000808ALL, 0x8000000080008000LL,
-  0x000000000000808BLL, 0x0000000080000001LL, 0x8000000080008081LL, 0x8000000000008009LL,
-  0x000000000000008ALL, 0x0000000000000088LL, 0x0000000080008009LL, 0x000000008000000ALL,
-  0x000000008000808BLL, 0x800000000000008BLL, 0x8000000000008089LL, 0x8000000000008003LL,
-  0x8000000000008002LL, 0x8000000000000080LL, 0x000000000000800ALL, 0x800000008000000ALL,
-  0x8000000080008081LL, 0x8000000000008080LL, 0x0000000080000001LL, 0x8000000080008008LL};
-#else
-static const llong RC[] = {
-  0x0000000000000001L, 0x0000000000008082L, 0x800000000000808AL, 0x8000000080008000L,
-  0x000000000000808BL, 0x0000000080000001L, 0x8000000080008081L, 0x8000000000008009L,
-  0x000000000000008AL, 0x0000000000000088L, 0x0000000080008009L, 0x000000008000000AL,
-  0x000000008000808BL, 0x800000000000008BL, 0x8000000000008089L, 0x8000000000008003L,
-  0x8000000000008002L, 0x8000000000000080L, 0x000000000000800AL, 0x800000008000000AL,
-  0x8000000080008081L, 0x8000000000008080L, 0x0000000080000001L, 0x8000000080008008L};
-#endif
-
-/**
- * Keccak-f round temporary
- */
-static threadlocal llong B[25];
-
-/**
- * Keccak-f round temporary
- */
-static threadlocal llong C[5];
-
-
-/**
- * The bitrate
- */
-static threadlocal long r = 0;
-
-/**
- * The capacity
- */
-static threadlocal long c = 0;
-
-/**
- * The output size
- */
-static threadlocal long n = 0;
-
-/**
- * The state size
- */
-static threadlocal long b = 0;
-
-/**
- * The word size
- */
-static threadlocal long w = 0;
-
-/**
- * The word mask
- */
-static threadlocal llong wmod = 0;
-
-/**
- * ℓ, the binary logarithm of the word size
- */
-static threadlocal long l = 0;
-
-/**
- * 12 + 2ℓ, the number of rounds
- */
-static threadlocal long nr = 0;
-
-
-/**
- * The current state
- */
-static threadlocal llong* S = null;
-
-/**
- * Left over water to fill the sponge with at next update
- */
-static threadlocal byte* M = null;
-
-/**
- * Pointer for {@link #M}
- */
-static threadlocal long mptr = 0;
-
-/**
- * Size of {@link #M}
- */
-static threadlocal long mlen = 0;
-
-
-
-/**
- * Gets the smallest, in value, of the arguments
- * 
- * @param   X  The first candidate
- * @param   Y  The second candidate
- * @return     The lowest candidate
- */
-#define min(X, Y)  ((X) < (Y) ? (X) : (Y))
-
-
-
-/**
- * Copy an array segment into an array in start to end order
- * 
- * @param  src     The source array
- * @param  soff    The source array offset
- * @param  dest    The destination array
- * @param  doff    The destination array offset
- * @param  length  The number of elements to copy
- */
-static_inline void sha3_arraycopy(byte* src, long soff, byte* dest, long doff, long length)
-{
-  long i;
-  src += soff;
-  dest += doff;
-  
-  #define __(X)  dest[X] = src[X]
-  #define __0  *dest = *src
-  #define __1  __(0x01)
-  #define __2  __(0x02); __(0x03)
-  #define __3  __(0x04); __(0x05); __(0x06); __(0x07)
-  #define __4  __(0x08); __(0x09); __(0x0A); __(0x0B); __(0x0C); __(0x0D); __(0x0E); __(0x0F)
-  #define __5  __(0x10); __(0x11); __(0x12); __(0x13); __(0x14); __(0x15); __(0x16); __(0x17); __(0x18); __(0x19); __(0x1A); __(0x1B); __(0x1C); __(0x1D); __(0x1E); __(0x1F)
-  #define __6  __(0x20); __(0x21); __(0x22); __(0x23); __(0x24); __(0x25); __(0x26); __(0x27); __(0x28); __(0x29); __(0x2A); __(0x2B); __(0x2C); __(0x2D); __(0x2E); __(0x2F); \
-               __(0x30); __(0x31); __(0x32); __(0x33); __(0x34); __(0x35); __(0x36); __(0x37); __(0x38); __(0x39); __(0x3A); __(0x3B); __(0x3C); __(0x3D); __(0x3E); __(0x3F)
-  #define __7  __(0x40); __(0x41); __(0x42); __(0x43); __(0x44); __(0x45); __(0x46); __(0x47); __(0x48); __(0x49); __(0x4A); __(0x4B); __(0x4C); __(0x4D); __(0x4E); __(0x4F); \
-               __(0x50); __(0x51); __(0x52); __(0x53); __(0x54); __(0x55); __(0x56); __(0x57); __(0x58); __(0x59); __(0x5A); __(0x5B); __(0x5C); __(0x5D); __(0x5E); __(0x5F); \
-               __(0x60); __(0x61); __(0x62); __(0x63); __(0x64); __(0x65); __(0x66); __(0x67); __(0x68); __(0x69); __(0x6A); __(0x6B); __(0x6C); __(0x6D); __(0x6E); __(0x6F); \
-               __(0x70); __(0x71); __(0x72); __(0x73); __(0x74); __(0x75); __(0x76); __(0x77); __(0x78); __(0x79); __(0x7A); __(0x7B); __(0x7C); __(0x7D); __(0x7E); __(0x7F)
-  #define __8  __(0x80); __(0x81); __(0x82); __(0x83); __(0x84); __(0x85); __(0x86); __(0x87); __(0x88); __(0x89); __(0x8A); __(0x8B); __(0x8C); __(0x8D); __(0x8E); __(0x8F); \
-               __(0x90); __(0x91); __(0x92); __(0x93); __(0x94); __(0x95); __(0x96); __(0x97); __(0x98); __(0x99); __(0x9A); __(0x9B); __(0x9C); __(0x9D); __(0x9E); __(0x9F); \
-               __(0xA0); __(0xA1); __(0xA2); __(0xA3); __(0xA4); __(0xA5); __(0xA6); __(0xA7); __(0xA8); __(0xA9); __(0xAA); __(0xAB); __(0xAC); __(0xAD); __(0xAE); __(0xAF); \
-               __(0xB0); __(0xB1); __(0xB2); __(0xB3); __(0xB4); __(0xB5); __(0xB6); __(0xB7); __(0xB8); __(0xB9); __(0xBA); __(0xBB); __(0xBC); __(0xBD); __(0xBE); __(0xBF); \
-               __(0xC0); __(0xC1); __(0xC2); __(0xC3); __(0xC4); __(0xC5); __(0xC6); __(0xC7); __(0xC8); __(0xC9); __(0xCA); __(0xCB); __(0xCC); __(0xCD); __(0xCE); __(0xCF); \
-               __(0xD0); __(0xD1); __(0xD2); __(0xD3); __(0xD4); __(0xD5); __(0xD6); __(0xD7); __(0xD8); __(0xD9); __(0xDA); __(0xDB); __(0xDC); __(0xDD); __(0xDE); __(0xDF); \
-               __(0xE0); __(0xE1); __(0xE2); __(0xE3); __(0xE4); __(0xE5); __(0xE6); __(0xE7); __(0xE8); __(0xE9); __(0xEA); __(0xEB); __(0xEC); __(0xED); __(0xEE); __(0xEF); \
-               __(0xF0); __(0xF1); __(0xF2); __(0xF3); __(0xF4); __(0xF5); __(0xF6); __(0xF7); __(0xF8); __(0xF9); __(0xFA); __(0xFB); __(0xFC); __(0xFD); __(0xFE); __(0xFF)
-  
-  if ((length & 15))
-    {
-      if ((length &   1))  {  __0;   src += 1;  dest += 1;  }
-      if ((length &   2))  {  __0;  __1;   src += 2;  dest += 2;  }
-      if ((length &   4))  {  __0;  __1;  __2;   src += 4;  dest += 4;  }
-      if ((length &   8))  {  __0;  __1;  __2;  __3;   src += 8;  dest += 8;  }
-    }
-  if ((length & 240))
-    {
-      if ((length &  16))  {  __0;  __1;  __2;  __3;  __4;   src += 16;  dest += 16;  }
-      if ((length &  32))  {  __0;  __1;  __2;  __3;  __4;  __5;   src += 32;  dest += 32;  }
-      if ((length &  64))  {  __0;  __1;  __2;  __3;  __4;  __5;  __6;   src += 64;  dest += 64;  }
-      if ((length & 128))  {  __0;  __1;  __2;  __3;  __4;  __5;  __6;  __7;   src += 128;  dest += 128;  }
-    }
-  length &= ~255;
-  for (i = 0; i < length; i += 256)
-    {
-      __0;  __1;  __2;  __3;  __4;  __5;  __6;  __7;  __8;   src += 256;  dest += 256;
-    }
-  
-  #undef __8
-  #undef __7
-  #undef __6
-  #undef __5
-  #undef __4
-  #undef __3
-  #undef __2
-  #undef __1
-  #undef __0
-  #undef __
-}
-
-
-/**
- * Copy an array segment into an array in end to start order
- * 
- * @param  src     The source array
- * @param  soff    The source array offset
- * @param  dest    The destination array
- * @param  doff    The destination array offset
- * @param  length  The number of elements to copy
- */
-static_inline void sha3_revarraycopy(byte* src, long soff, byte* dest, long doff, long length)
-{
-  long copyi;
-  for (copyi = length - 1; copyi >= 0; copyi--)
-    dest[copyi + doff] = src[copyi + soff];
-}
-
-
-/**
- * Rotate a word
- * 
- * @param   X:llong  The value to rotate
- * @param   N:long   Rotation steps, may not be 0
- * @return   :llong  The value rotated
- */
-#define rotate(X, N)  ((((X) >> (w - ((N) % w))) + ((X) << ((N) % w))) & wmod)
-
-
-/**
- * Rotate a 64-bit word
- * 
- * @param   X:llong  The value to rotate
- * @param   N:long   Rotation steps, may not be 0
- * @return   :llong  The value rotated
- */
-#define rotate64(X, N)  ((llong)((ullong)(X) >> (64 - (N))) + ((X) << (N)))
-
-
-/**
- * Binary logarithm
- * 
- * @param   x  The value of which to calculate the binary logarithm
- * @return     The binary logarithm
- */
-static_inline long sha3_lb(long x)
-{
-  long rc = 0;
-  if ((x & 0xFF00) != 0)  { rc +=  8;  x >>=  8; }
-  if ((x & 0x00F0) != 0)  { rc +=  4;  x >>=  4; }
-  if ((x & 0x000C) != 0)  { rc +=  2;  x >>=  2; }
-  if ((x & 0x0002) != 0)    rc +=  1;
-  return rc;
-}
-
-
-/**
- * Perform one round of computation
- * 
- * @param  A   The current state
- * @param  rc  Round constant
- */
-static void sha3_keccakFRound(llong* restrict_ A, llong rc)
-{
-  llong da, db, dc, dd, de;
-  
-  /* θ step (step 1 and 2 of 3) */
-  #define __C(I, J0, J1, J2, J3, J4)  C[I] = (A[J0] ^ A[J1]) ^ (A[J2] ^ A[J3]) ^ A[J4]
-  __C(0,   0,  1,  2,  3,  4);
-  __C(1,   5,  6,  7,  8,  9);
-  __C(2,  10, 11, 12, 13, 14);
-  __C(3,  15, 16, 17, 18, 19);
-  __C(4,  20, 21, 22, 23, 24);
-  #undef __C
-  
-  da = C[4] ^ rotate64(C[1], 1);
-  dd = C[2] ^ rotate64(C[4], 1);
-  db = C[0] ^ rotate64(C[2], 1);
-  de = C[3] ^ rotate64(C[0], 1);
-  dc = C[1] ^ rotate64(C[3], 1);
-  
-  if (w == 64)
-    {
-      /* ρ and π steps, with last two part of θ */
-      #define __B(Bi, Ai, Dv, R)  B[Bi] = rotate64(A[Ai] ^ Dv, R)
-      B[0] = A[0] ^ da;     __B( 1, 15, dd, 28);  __B( 2,  5, db,  1);  __B( 3, 20, de, 27);  __B( 4, 10, dc, 62);
-      __B( 5,  6, db, 44);  __B( 6, 21, de, 20);  __B( 7, 11, dc,  6);  __B( 8,  1, da, 36);  __B( 9, 16, dd, 55);
-      __B(10, 12, dc, 43);  __B(11,  2, da,  3);  __B(12, 17, dd, 25);  __B(13,  7, db, 10);  __B(14, 22, de, 39);
-      __B(15, 18, dd, 21);  __B(16,  8, db, 45);  __B(17, 23, de,  8);  __B(18, 13, dc, 15);  __B(19,  3, da, 41);
-      __B(20, 24, de, 14);  __B(21, 14, dc, 61);  __B(22,  4, da, 18);  __B(23, 19, dd, 56);  __B(24,  9, db,  2);
-      #undef __B
-    }
-  else
-    {
-      /* ρ and π steps, with last two part of θ */
-      #define __B(Bi, Ai, Dv, R)  B[Bi] = rotate(A[Ai] ^ Dv, R)
-      B[0] = A[0] ^ da;     __B( 1, 15, dd, 28);  __B( 2,  5, db,  1);  __B( 3, 20, de, 27);  __B( 4, 10, dc, 62);
-      __B( 5,  6, db, 44);  __B( 6, 21, de, 20);  __B( 7, 11, dc,  6);  __B( 8,  1, da, 36);  __B( 9, 16, dd, 55);
-      __B(10, 12, dc, 43);  __B(11,  2, da,  3);  __B(12, 17, dd, 25);  __B(13,  7, db, 10);  __B(14, 22, de, 39);
-      __B(15, 18, dd, 21);  __B(16,  8, db, 45);  __B(17, 23, de,  8);  __B(18, 13, dc, 15);  __B(19,  3, da, 41);
-      __B(20, 24, de, 14);  __B(21, 14, dc, 61);  __B(22,  4, da, 18);  __B(23, 19, dd, 56);  __B(24,  9, db,  2);
-      #undef __B
-    }
-  
-  /* ξ step */
-  #define __A(X, X5, X10)  A[X] = B[X] ^ ((~(B[X5])) & B[X10])
-  __A( 0,  5, 10);  __A( 1,  6, 11);  __A( 2,  7, 12);  __A( 3,  8, 13);  __A( 4,  9, 14);
-  __A( 5, 10, 15);  __A( 6, 11, 16);  __A( 7, 12, 17);  __A( 8, 13, 18);  __A( 9, 14, 19);
-  __A(10, 15, 20);  __A(11, 16, 21);  __A(12, 17, 22);  __A(13, 18, 23);  __A(14, 19, 24);
-  __A(15, 20,  0);  __A(16, 21,  1);  __A(17, 22,  2);  __A(18, 23,  3);  __A(19, 24,  4);
-  __A(20,  0,  5);  __A(21,  1,  6);  __A(22,  2,  7);  __A(23,  3,  8);  __A(24,  4,  9);
-  #undef __A
-  
-  /* ι step */
-  A[0] ^= rc;
-}
-
-
-/**
- * Perform Keccak-f function
- * 
- * @param  A  The current state
- */
-static void sha3_keccakF(llong* restrict_ A)
-{
-  long i;
-  if (nr == 24)
-    {
-      sha3_keccakFRound(A, 0x0000000000000001);
-      sha3_keccakFRound(A, 0x0000000000008082);
-      sha3_keccakFRound(A, 0x800000000000808A);
-      sha3_keccakFRound(A, 0x8000000080008000);
-      sha3_keccakFRound(A, 0x000000000000808B);
-      sha3_keccakFRound(A, 0x0000000080000001);
-      sha3_keccakFRound(A, 0x8000000080008081);
-      sha3_keccakFRound(A, 0x8000000000008009);
-      sha3_keccakFRound(A, 0x000000000000008A);
-      sha3_keccakFRound(A, 0x0000000000000088);
-      sha3_keccakFRound(A, 0x0000000080008009);
-      sha3_keccakFRound(A, 0x000000008000000A);
-      sha3_keccakFRound(A, 0x000000008000808B);
-      sha3_keccakFRound(A, 0x800000000000008B);
-      sha3_keccakFRound(A, 0x8000000000008089);
-      sha3_keccakFRound(A, 0x8000000000008003);
-      sha3_keccakFRound(A, 0x8000000000008002);
-      sha3_keccakFRound(A, 0x8000000000000080);
-      sha3_keccakFRound(A, 0x000000000000800A);
-      sha3_keccakFRound(A, 0x800000008000000A);
-      sha3_keccakFRound(A, 0x8000000080008081);
-      sha3_keccakFRound(A, 0x8000000000008080);
-      sha3_keccakFRound(A, 0x0000000080000001);
-      sha3_keccakFRound(A, 0x8000000080008008);
-    }
-  else
-    for (i = 0; i < nr; i++)
-      sha3_keccakFRound(A, RC[i] & wmod);
-}
-
-
-/**
- * Convert a chunk of byte:s to a word
- * 
- * @param   message  The message
- * @param   msglen   The length of the message
- * @param   rr       Bitrate in bytes
- * @param   ww       Word size in bytes
- * @param   off      The offset in the message
- * @return           Lane
- */
-static_inline llong sha3_toLane(byte* restrict_ message, long msglen, long rr, long ww, long off)
-{
-  llong rc = 0;
-  long n = min(msglen, rr), i;
-  for (i = off + ww - 1; i >= off; i--)
-    rc = (rc << 8) | ((i < n) ? (llong)(message[i] & 255) : 0L);
-  return rc;
-}
-
-
-/**
- * Convert a chunk of byte:s to a 64-bit word
- * 
- * @param   message  The message
- * @param   msglen   The length of the message
- * @param   rr       Bitrate in bytes
- * @param   off      The offset in the message
- * @return           Lane
- */
-static_inline llong sha3_toLane64(byte* restrict_ message, long msglen, long rr, long off)
-{
-  long n = min(msglen, rr);
-  return ((off + 7 < n) ? ((llong)(message[off + 7] & 255) << 56) : 0L) |
-         ((off + 6 < n) ? ((llong)(message[off + 6] & 255) << 48) : 0L) |
-         ((off + 5 < n) ? ((llong)(message[off + 5] & 255) << 40) : 0L) |
-         ((off + 4 < n) ? ((llong)(message[off + 4] & 255) << 32) : 0L) |
-         ((off + 3 < n) ? ((llong)(message[off + 3] & 255) << 24) : 0L) |
-         ((off + 2 < n) ? ((llong)(message[off + 2] & 255) << 16) : 0L) |
-         ((off + 1 < n) ? ((llong)(message[off + 1] & 255) <<  8) : 0L) |
-         ((off     < n) ? ((llong)(message[off    ] & 255)      ) : 0L);
-}
-
-
-/**
- * pad 10*1
- * 
- * @param   msg     The message to pad
- * @param   len     The length of the message
- * @param   r       The bitrate
- * @param   outlen  The length of the padded message (out parameter)
- * @return          The message padded
- */
-static_inline byte* sha3_pad10star1(byte* restrict_ msg, long len, long r, long* restrict_ outlen)
-{
-  byte* message;
-  
-  long nrf = (len <<= 3) >> 3;
-  long nbrf = len & 7;
-  long ll = len % r;
-  long i;
-  
-  byte b = (byte)(nbrf == 0 ? 1 : ((msg[nrf] >> (8 - nbrf)) | (1 << nbrf)));
-  
-  if ((r - 8 <= ll) && (ll <= r - 2))
-    {
-      message = (byte*)malloc((len = nrf + 1) * sizeof(byte));
-      message[nrf] = (byte)(b ^ 128);
-    }
-  else
-    {
-      byte* M;
-      long N;
-      len = (nrf + 1) << 3;
-      len = ((len - (len % r) + (r - 8)) >> 3) + 1;
-      message = (byte*)malloc(len * sizeof(byte));
-      message[nrf] = b;
-      N = len - nrf - 1;
-      M = message + nrf + 1;
-      
-      #define __(X)  M[X] = 0
-      #define __0  *M = 0
-      #define __1  __(0x01)
-      #define __2  __(0x02); __(0x03)
-      #define __3  __(0x04); __(0x05); __(0x06); __(0x07)
-      #define __4  __(0x08); __(0x09); __(0x0A); __(0x0B); __(0x0C); __(0x0D); __(0x0E); __(0x0F)
-      #define __5  __(0x10); __(0x11); __(0x12); __(0x13); __(0x14); __(0x15); __(0x16); __(0x17); __(0x18); __(0x19); __(0x1A); __(0x1B); __(0x1C); __(0x1D); __(0x1E); __(0x1F)
-      #define __6  __(0x20); __(0x21); __(0x22); __(0x23); __(0x24); __(0x25); __(0x26); __(0x27); __(0x28); __(0x29); __(0x2A); __(0x2B); __(0x2C); __(0x2D); __(0x2E); __(0x2F); \
-                   __(0x30); __(0x31); __(0x32); __(0x33); __(0x34); __(0x35); __(0x36); __(0x37); __(0x38); __(0x39); __(0x3A); __(0x3B); __(0x3C); __(0x3D); __(0x3E); __(0x3F)
-      #define __7  __(0x40); __(0x41); __(0x42); __(0x43); __(0x44); __(0x45); __(0x46); __(0x47); __(0x48); __(0x49); __(0x4A); __(0x4B); __(0x4C); __(0x4D); __(0x4E); __(0x4F); \
-                   __(0x50); __(0x51); __(0x52); __(0x53); __(0x54); __(0x55); __(0x56); __(0x57); __(0x58); __(0x59); __(0x5A); __(0x5B); __(0x5C); __(0x5D); __(0x5E); __(0x5F); \
-                   __(0x60); __(0x61); __(0x62); __(0x63); __(0x64); __(0x65); __(0x66); __(0x67); __(0x68); __(0x69); __(0x6A); __(0x6B); __(0x6C); __(0x6D); __(0x6E); __(0x6F); \
-                   __(0x70); __(0x71); __(0x72); __(0x73); __(0x74); __(0x75); __(0x76); __(0x77); __(0x78); __(0x79); __(0x7A); __(0x7B); __(0x7C); __(0x7D); __(0x7E); __(0x7F)
-      #define __8  __(0x80); __(0x81); __(0x82); __(0x83); __(0x84); __(0x85); __(0x86); __(0x87); __(0x88); __(0x89); __(0x8A); __(0x8B); __(0x8C); __(0x8D); __(0x8E); __(0x8F); \
-                   __(0x90); __(0x91); __(0x92); __(0x93); __(0x94); __(0x95); __(0x96); __(0x97); __(0x98); __(0x99); __(0x9A); __(0x9B); __(0x9C); __(0x9D); __(0x9E); __(0x9F); \
-                   __(0xA0); __(0xA1); __(0xA2); __(0xA3); __(0xA4); __(0xA5); __(0xA6); __(0xA7); __(0xA8); __(0xA9); __(0xAA); __(0xAB); __(0xAC); __(0xAD); __(0xAE); __(0xAF); \
-                   __(0xB0); __(0xB1); __(0xB2); __(0xB3); __(0xB4); __(0xB5); __(0xB6); __(0xB7); __(0xB8); __(0xB9); __(0xBA); __(0xBB); __(0xBC); __(0xBD); __(0xBE); __(0xBF); \
-                   __(0xC0); __(0xC1); __(0xC2); __(0xC3); __(0xC4); __(0xC5); __(0xC6); __(0xC7); __(0xC8); __(0xC9); __(0xCA); __(0xCB); __(0xCC); __(0xCD); __(0xCE); __(0xCF); \
-                   __(0xD0); __(0xD1); __(0xD2); __(0xD3); __(0xD4); __(0xD5); __(0xD6); __(0xD7); __(0xD8); __(0xD9); __(0xDA); __(0xDB); __(0xDC); __(0xDD); __(0xDE); __(0xDF); \
-                   __(0xE0); __(0xE1); __(0xE2); __(0xE3); __(0xE4); __(0xE5); __(0xE6); __(0xE7); __(0xE8); __(0xE9); __(0xEA); __(0xEB); __(0xEC); __(0xED); __(0xEE); __(0xEF); \
-                   __(0xF0); __(0xF1); __(0xF2); __(0xF3); __(0xF4); __(0xF5); __(0xF6); __(0xF7); __(0xF8); __(0xF9); __(0xFA); __(0xFB); __(0xFC); __(0xFD); __(0xFE); __(0xFF)
-      
-      if ((N & 15))
-	{
-	  if ((N &   1))  {  __0;   M += 1;  }
-	  if ((N &   2))  {  __0;  __1;   M += 2;  }
-	  if ((N &   4))  {  __0;  __1;  __2;   M += 4;  }
-	  if ((N &   8))  {  __0;  __1;  __2;  __3;   M += 8;  }
-	}
-      if ((N & 240))
-	{
-	  if ((N &  16))  {  __0;  __1;  __2;  __3;  __4;   M += 16;  }
-	  if ((N &  32))  {  __0;  __1;  __2;  __3;  __4;  __5;   M += 32;  }
-	  if ((N &  64))  {  __0;  __1;  __2;  __3;  __4;  __5;  __6;   M += 64;  }
-	  if ((N & 128))  {  __0;  __1;  __2;  __3;  __4;  __5;  __6;  __7;   M += 128;  }
-	}
-      N &= ~255;
-      for (i = 0; i < N; i += 256)
-	{
-	  __0;  __1;  __2;  __3;  __4;  __5;  __6;  __7;  __8;   M += 256;
-	}
-      
-      #undef __8
-      #undef __7
-      #undef __6
-      #undef __5
-      #undef __4
-      #undef __3
-      #undef __2
-      #undef __1
-      #undef __0
-      #undef __
-      
-      message[len - 1] = -128;
-    }
-  sha3_arraycopy(msg, 0, message, 0, nrf);
-  
-  *outlen = len;
-  return message;
-}
-
-
-/**
- * Initialise Keccak sponge
- * 
- * @param  bitrate   The bitrate
- * @param  capacity  The capacity
- * @param  output    The output size
- */
-void sha3_initialise(long bitrate, long capacity, long output)
-{
-  long i;
-  
-  r = bitrate;
-  n = output;
-  c = capacity;
-  b = r + c;
-  w = b / 25;
-  l = sha3_lb(w);
-  nr = 12 + (l << 1);
-  if (w == 64)
-    wmod = -1;
-  else
-    {
-      wmod = 1;
-      wmod <<= w;
-      wmod--;
-    }
-  S = (llong*)malloc(25 * sizeof(llong));
-  M = (byte*)malloc((mlen = (r * b) >> 2) * sizeof(byte));
-  mptr = 0;
-  
-  for (i = 0; i < 25; i++)
-    *(S + i) = 0;
-}
-
-/**
- * Dispose of the Keccak sponge
- */
-void sha3_dispose()
-{
-  #ifdef WITH_WIPE
-  long i;
-  #endif
-  if (S != null)
-    {
-      #ifdef WITH_WIPE
-      for (i = 0; i < 25; i++)
-	*(S + i) = 0;
-      #endif
-      free(S);
-      S = null;
-    }
-  if (M != null)
-    {
-      #ifdef WITH_WIPE
-      for (i = 0; i < mlen; i++)
-	*(M + i) = 0;
-      #endif
-      free(M);
-      M = null;
-    }
-}
-
-/**
- * Absorb the more of the message to the Keccak sponge
- * 
- * @param  msg     The partial message
- * @param  msglen  The length of the partial message
- */
-void sha3_update(byte* restrict_ msg, long msglen)
-{
-  long rr = r >> 3;
-  long ww = w >> 3;
-  long i, len;
-  byte* message;
-  byte* _msg;
-  long nnn;
-  
-  if (mptr + msglen > mlen)
-    #ifdef WITH_WIPE
-    M = (byte*)realloc(M, mlen = (mlen + msglen) << 1);
-    #else
-    {
-      long mlen_ = mlen;
-      char* M_ = (byte*)malloc(mlen = (mlen + msglen) << 1);
-      sha3_arraycopy(M, 0, M_, 0, mlen_);
-      for (i = 0; i < mlen_; i++)
-	*(M + i) = 0;
-      free(M);
-      M = M_;
-    }
-    #endif
-  sha3_arraycopy(msg, 0, M, mptr, msglen);
-  len = mptr += msglen;
-  len -= len % ((r * b) >> 3);
-  message = (byte*)malloc(len * sizeof(byte));
-  sha3_arraycopy(M, 0, message, 0, len);
-  mptr -= len;
-  sha3_revarraycopy(M, nnn = len, M, 0, mptr);
-  _msg = message;
-  
-  /* Absorbing phase */
-  if (ww == 8)
-    for (i = 0; i < nnn; i += rr)
-      {
-	#define __S(Si, OFF)  S[Si] ^= sha3_toLane64(message, len, rr, OFF)
-	__S( 0,   0);  __S( 5,   8);  __S(10,  16);  __S(15,  24);  __S(20,  32);
-	__S( 1,  40);  __S( 6,  48);  __S(11,  56);  __S(16,  64);  __S(21,  72);
-	__S( 2,  80);  __S( 7,  88);  __S(12,  96);  __S(17, 104);  __S(22, 112);
-	__S( 3, 120);  __S( 8, 128);  __S(13, 136);  __S(18, 144);  __S(23, 152);
-	__S( 4, 160);  __S( 9, 168);  __S(14, 176);  __S(19, 184);  __S(24, 192);
-        #undef __S
-	sha3_keccakF(S);
-	message += rr;
-	len -= rr;
-      }
-  else
-    for (i = 0; i < nnn; i += rr)
-      {
-	#define __S(Si, OFF)  S[Si] ^= sha3_toLane(message, len, rr, ww, OFF * w)
-	__S( 0,  0);  __S( 5,  1);  __S(10,  2);  __S(15,  3);  __S(20,  4);
-	__S( 1,  5);  __S( 6,  6);  __S(11,  7);  __S(16,  8);  __S(21,  9);
-	__S( 2, 10);  __S( 7, 11);  __S(12, 12);  __S(17, 13);  __S(22, 14);
-	__S( 3, 15);  __S( 8, 16);  __S(13, 17);  __S(18, 18);  __S(23, 19);
-	__S( 4, 20);  __S( 9, 21);  __S(14, 22);  __S(19, 23);  __S(24, 24);
-        #undef __S
-	sha3_keccakF(S);
-	message += rr;
-	len -= rr;
-      }
-  
-  #ifdef WITH_WIPE
-  for (i = 0; i < nnn; i++)
-    *(_msg + i) = 0;
-  #endif
-  free(_msg);
-}
-
-
-/**
- * Absorb the last part of the message and squeeze the Keccak sponge
- * 
- * @param   msg         The rest of the message, may be {@code null}
- * @param   msglen      The length of the partial message
- * @param   withReturn  Whether to return the hash instead of just do a quick squeeze phrase and return {@code null}
- * @return              The hash sum, or {@code null} if <tt>withReturn</tt> is {@code false}
- */
-byte* sha3_digest(byte* restrict_ msg, long msglen, boolean withReturn)
-{
-  byte* message;
-  byte* _msg;
-  byte* rc;
-  long rr = r >> 3, len;
-  long nn = (n + 7) >> 3, olen;
-  long ww = w >> 3, ni;
-  long i, j = 0, ptr = 0, _;
-  long nnn;
-  
-  if ((msg == null) || (msglen == 0))
-    message = sha3_pad10star1(M, mptr, r, &len);
-  else
-    {
-      if (mptr + msglen > mlen)
-        #ifdef WITH_WIPE
-	M = (byte*)realloc(M, mlen += msglen);
-        #else
-	{
-	  long mlen_ = mlen;
-	  char* M_ = (byte*)malloc(mlen += msglen);
-	  sha3_arraycopy(M, 0, M_, 0, mlen_);
-	  for (i = 0; i < mlen_; i++)
-	    *(M + i) = 0;
-	  free(M);
-	  M = M_;
-	}
-        #endif
-      sha3_arraycopy(msg, 0, M, mptr, msglen);
-      message = sha3_pad10star1(M, mptr + msglen, r, &len);
-    }
-  #ifdef WITH_WIPE
-  for (i = 0; i < mlen; i++)
-    *(M + i) = 0;
-  #endif
-  free(M);
-  M = null;
-  rc = withReturn ? (byte*)malloc(((n + 7) >> 3) * sizeof(byte)) : null;
-  _msg = message;
-  nnn = len;
-  
-  /* Absorbing phase */
-  if (ww == 8)
-    for (i = 0; i < nnn; i += rr)
-      {
-	#define __S(Si, OFF)  S[Si] ^= sha3_toLane64(message, len, rr, OFF)
-	__S( 0,   0);  __S( 5,   8);  __S(10,  16);  __S(15,  24);  __S(20,  32);
-	__S( 1,  40);  __S( 6,  48);  __S(11,  56);  __S(16,  64);  __S(21,  72);
-	__S( 2,  80);  __S( 7,  88);  __S(12,  96);  __S(17, 104);  __S(22, 112);
-	__S( 3, 120);  __S( 8, 128);  __S(13, 136);  __S(18, 144);  __S(23, 152);
-	__S( 4, 160);  __S( 9, 168);  __S(14, 176);  __S(19, 184);  __S(24, 192);
-        #undef __S
-	sha3_keccakF(S);
-	message += rr;
-	len -= rr;
-      }
-  else
-    for (i = 0; i < nnn; i += rr)
-      {
-	#define __S(Si, OFF)  S[Si] ^= sha3_toLane(message, len, rr, ww, OFF * w)
-	__S( 0,  0);  __S( 5,  1);  __S(10,  2);  __S(15,  3);  __S(20,  4);
-	__S( 1,  5);  __S( 6,  6);  __S(11,  7);  __S(16,  8);  __S(21,  9);
-	__S( 2, 10);  __S( 7, 11);  __S(12, 12);  __S(17, 13);  __S(22, 14);
-	__S( 3, 15);  __S( 8, 16);  __S(13, 17);  __S(18, 18);  __S(23, 19);
-	__S( 4, 20);  __S( 9, 21);  __S(14, 22);  __S(19, 23);  __S(24, 24);
-        #undef __S
-	sha3_keccakF(S);
-	message += rr;
-	len -= rr;
-      }
-  
-  #ifdef WITH_WIPE
-  for (i = 0; i < nnn; i++)
-    *(_msg + i) = 0;
-  #endif
-  free(_msg);
-  
-  /* Squeezing phase */
-  olen = n;
-  if (withReturn)
-    {
-      ni = min(25, rr);
-      while (olen > 0)
-	{
-	  i = 0;
-	  while ((i < ni) && (j < nn))
-	    {
-	      llong v = S[(i % 5) * 5 + i / 5];
-	      for (_ = 0; _ < ww; _++)
-		{
-		  if (j < nn)
-		    rc[ptr++] = (byte)v;
-		  v >>= 8;
-		  j += 1;
-		}
-	      i += 1;
-	    }
-	  olen -= r;
-	  if (olen > 0)
-	    sha3_keccakF(S);
-	}
-      if ((n & 7))
-	rc[n >> 3] &= (1 << (n & 7)) - 1;
-      
-      return rc;
-    }
-  while ((olen -= r) > 0)
-    sha3_keccakF(S);
-  return null;
-}
-
-
-/**
- * Force some rounds of Keccak-f
- * 
- * @param  times  The number of rounds
- */
-void sha3_simpleSqueeze(long times)
-{
-  long i;
-  for (i = 0; i < times; i++)
-    sha3_keccakF(S);
-}
-
-
-/**
- * Squeeze as much as is needed to get a digest a number of times
- * 
- * @param  times  The number of digests
- */
-void sha3_fastSqueeze(long times)
-{
-  long i, olen;
-  for (i = 0; i < times; i++)
-    {
-      sha3_keccakF(S); /* Last squeeze did not do a ending squeeze */
-      olen = n;
-      while ((olen -= r) > 0)
-	sha3_keccakF(S);
-    }
-}
-
-
-/**
- * Squeeze out another digest
- * 
- * @return  The hash sum
- */
-byte* sha3_squeeze(void)
-{
-  long nn, ww, olen, i, j, ptr, ni;
-  byte* rc;
-  
-  sha3_keccakF(S); /* Last squeeze did not do a ending squeeze */
-  
-  ww = w >> 3;
-  rc = (byte*)malloc((nn = (n + 7) >> 3) * sizeof(byte));
-  olen = n;
-  j = ptr = 0;
-  ni = (25 < r >> 3) ? 25 : (r >> 3);
-  
-  while (olen > 0)
-    {
-      i = 0;
-      while ((i < ni) && (j < nn))
-	{
-	  long _, v = S[(i % 5) * 5 + i / 5];
-	  for (_ = 0; _ < ww; _++)
-	    {
-	      if (j < nn)
-		*(rc + ptr++) = (byte)v;
-	      v >>= 8;
-	      j += 1;
-	    }
-	  i += 1;
-	}
-      olen -= r;
-      if (olen > 0)
-	sha3_keccakF(S);
-    }
-  if (n & 7)
-    rc[nn - 1] &= (1 << (n & 7)) - 1;
-  
-  return rc;
-}
-
-
-/**
- * Retrieve the state of the Keccak sponge
- * 
- * @return  A 25-element array with the state, changes will be applied to the sponge
- */
-llong* sha3_state(void)
-{
-  return S;
-}
-
diff --git a/src/sha3.h b/src/sha3.h
deleted file mode 100644
index a6cf321..0000000
--- a/src/sha3.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/**
- * sha3sum – SHA-3 (Keccak) checksum calculator
- * 
- * Copyright © 2013, 2014  Mattias Andrée (maandree@member.fsf.org)
- * 
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- * 
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#ifndef __SHA3_H__
-#define __SHA3_H__
-
-#include <stdlib.h>
-
-
-#ifdef WITH_C99
-#  include <inttypes.h>
-#  define restrict_ restrict
-#  define byte int_fast8_t
-#  define boolean int_fast8_t
-#  define llong int_fast64_t
-#  define ullong uint_fast64_t
-#else
-#  define restrict_ /* introduced in C99 */
-#  define byte char
-#  define boolean char
-#  if __x86_64__ || __ppc64__
-#    define llong long int
-#  else
-#    define llong long long int
-#  endif
-#  define ullong unsigned llong
-#endif
-
-
-
-/**
- * Initialise Keccak sponge
- * 
- * @param  bitrate   The bitrate
- * @param  capacity  The capacity
- * @param  output    The output size
- */
-void sha3_initialise(long bitrate, long capacity, long output);
-
-
-/**
- * Dispose of the Keccak sponge
- */
-void sha3_dispose(void);
-
-
-/**
- * Absorb the more of the message to the Keccak sponge
- * 
- * @param  msg     The partial message
- * @param  msglen  The length of the partial message
- */
-void sha3_update(byte* restrict_ msg, long msglen);
-
-
-/**
- * Absorb the last part of the message and squeeze the Keccak sponge
- * 
- * @param   msg         The rest of the message, may be {@code null}
- * @param   msglen      The length of the partial message
- * @param   withReturn  Whether to return the hash instead of just do a quick squeeze phrase and return {@code null}
- * @return              The hash sum, or {@code null} if <tt>withReturn</tt> is {@code false}
- */
-byte* sha3_digest(byte* restrict_ msg, long msglen, boolean withReturn);
-
-
-/**
- * Force some rounds of Keccak-f
- * 
- * @param  times  The number of rounds
- */
-void sha3_simpleSqueeze(long times);
-
-
-/**
- * Squeeze as much as is needed to get a digest a number of times
- * 
- * @param  times  The number of digests
- */
-void sha3_fastSqueeze(long times);
-
-
-/**
- * Squeeze out another digest
- * 
- * @return  The hash sum
- */
-byte* sha3_squeeze(void);
-
-
-/**
- * Retrieve the state of the Keccak sponge
- * 
- * @return  A 25-element array with the state, changes will be applied to the sponge
- */
-llong* sha3_state(void);
-
-
-#endif
-