X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/932f6ca7358aee875a5f6fc0c6a33ead4100fa30..cd6eca4375f46a35b93e2fea4b0428a23b451aa3:/mpmont.h

diff --git a/mpmont.h b/mpmont.h
index 7544e70..745cf5a 100644
--- a/mpmont.h
+++ b/mpmont.h
@@ -1,13 +1,13 @@
 /* -*-c-*-
  *
- * $Id: mpmont.h,v 1.5 2001/06/16 13:00:04 mdw Exp $
+ * $Id$
  *
  * Montgomery reduction
  *
  * (c) 1999 Straylight/Edgeware
  */
 
-/*----- Licensing notice --------------------------------------------------* 
+/*----- Licensing notice --------------------------------------------------*
  *
  * This file is part of Catacomb.
  *
@@ -15,41 +15,18 @@
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
- * 
+ *
  * Catacomb 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 Library General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Library General Public
  * License along with Catacomb; if not, write to the Free
  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: mpmont.h,v $
- * Revision 1.5  2001/06/16 13:00:04  mdw
- * Moved @mpmont_factor@ to <mp.h>.  Documented interface change to
- * @mpmont_expr@ and @mpmont_mexpr@ -- the arguments are now in Montgomery
- * form.
- *
- * Revision 1.4  1999/12/11 01:51:14  mdw
- * Use a Karatsuba-based reduction for large moduli.
- *
- * Revision 1.3  1999/12/10 23:29:48  mdw
- * Change header file guard names.
- *
- * Revision 1.2  1999/11/19 13:17:43  mdw
- * Add extra interface to exponentiation which returns a Montgomerized
- * result.  Add simultaneous exponentiation interface.
- *
- * Revision 1.1  1999/11/17 18:02:16  mdw
- * New multiprecision integer arithmetic suite.
- *
- */
-
 #ifndef CATACOMB_MPMONT_H
 #define CATACOMB_MPMONT_H
 
@@ -115,13 +92,13 @@ typedef struct mpmont {
  * Arguments:	@mpmont *mm@ = pointer to Montgomery reduction context
  *		@mp *m@ = modulus to use
  *
- * Returns:	---
+ * Returns:	Zero on success, nonzero on error.
  *
  * Use:		Initializes a Montgomery reduction context ready for use.
  *		The argument @m@ must be a positive odd integer.
  */
 
-extern void mpmont_create(mpmont */*mm*/, mp */*m*/);
+extern int mpmont_create(mpmont */*mm*/, mp */*m*/);
 
 /* --- @mpmont_destroy@ --- *
  *
@@ -186,7 +163,7 @@ extern mp *mpmont_exp(mpmont */*mm*/, mp */*d*/, mp */*a*/, mp */*e*/);
  *
  * Arguments:	@mpmont *mm@ = pointer to Montgomery reduction context
  *		@mp *d@ = fake destination
- *		@mp_expfactor *f@ = pointer to array of factors
+ *		@const mp_expfactor *f@ = pointer to array of factors
  *		@size_t n@ = number of factors supplied
  *
  * Returns:	If the bases are %$g_0, g_1, \ldots, g_{n-1}$% and the
@@ -200,13 +177,13 @@ extern mp *mpmont_exp(mpmont */*mm*/, mp */*d*/, mp */*a*/, mp */*e*/);
  */
 
 extern mp *mpmont_mexpr(mpmont */*mm*/, mp */*d*/,
-			mp_expfactor */*f*/, size_t /*n*/);
+			const mp_expfactor */*f*/, size_t /*n*/);
 
 /* --- @mpmont_mexp@ --- *
  *
  * Arguments:	@mpmont *mm@ = pointer to Montgomery reduction context
  *		@mp *d@ = fake destination
- *		@mp_expfactor *f@ = pointer to array of factors
+ *		@const mp_expfactor *f@ = pointer to array of factors
  *		@size_t n@ = number of factors supplied
  *
  * Returns:	Product of bases raised to exponents, all mod @m@.
@@ -215,7 +192,7 @@ extern mp *mpmont_mexpr(mpmont */*mm*/, mp */*d*/,
  */
 
 extern mp *mpmont_mexp(mpmont */*mm*/, mp */*d*/,
-		       mp_expfactor */*f*/, size_t /*n*/);
+		       const mp_expfactor */*f*/, size_t /*n*/);
 
 /*----- That's all, folks -------------------------------------------------*/