| | 1 | /* -*-c-*- |
| | 2 | * |
| | 3 | * $Id: field.c,v 1.2 2004/03/21 22:52:06 mdw Exp $ |
| | 4 | * |
| | 5 | * Abstract field operations |
| | 6 | * |
| | 7 | * (c) 2001 Straylight/Edgeware |
| | 8 | */ |
| | 9 | |
| | 10 | /*----- Licensing notice --------------------------------------------------* |
| | 11 | * |
| | 12 | * This file is part of Catacomb. |
| | 13 | * |
| | 14 | * Catacomb is free software; you can redistribute it and/or modify |
| | 15 | * it under the terms of the GNU Library General Public License as |
| | 16 | * published by the Free Software Foundation; either version 2 of the |
| | 17 | * License, or (at your option) any later version. |
| | 18 | * |
| | 19 | * Catacomb is distributed in the hope that it will be useful, |
| | 20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 22 | * GNU Library General Public License for more details. |
| | 23 | * |
| | 24 | * You should have received a copy of the GNU Library General Public |
| | 25 | * License along with Catacomb; if not, write to the Free |
| | 26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
| | 27 | * MA 02111-1307, USA. |
| | 28 | */ |
| | 29 | |
| | 30 | /*----- Revision history --------------------------------------------------* |
| | 31 | * |
| | 32 | * $Log: field.c,v $ |
| | 33 | * Revision 1.2 2004/03/21 22:52:06 mdw |
| | 34 | * Merge and close elliptic curve branch. |
| | 35 | * |
| | 36 | * Revision 1.1.4.1 2003/06/10 13:43:53 mdw |
| | 37 | * Simple (non-projective) curves over prime fields now seem to work. |
| | 38 | * |
| | 39 | * Revision 1.1 2001/05/07 17:30:13 mdw |
| | 40 | * Add an internal-representation no-op function. |
| | 41 | * |
| | 42 | */ |
| | 43 | |
| | 44 | /*----- Header files ------------------------------------------------------*/ |
| | 45 | |
| | 46 | #include "field.h" |
| | 47 | #include "mp.h" |
| | 48 | |
| | 49 | /*----- Main code ---------------------------------------------------------*/ |
| | 50 | |
| | 51 | /* --- @field_id@ --- * |
| | 52 | * |
| | 53 | * Arguments: @field *f@ = pointer to a field |
| | 54 | * @mp *d@ = a destination element |
| | 55 | * @mp *x@ = a source element |
| | 56 | * |
| | 57 | * Returns: The result element. |
| | 58 | * |
| | 59 | * Use: An identity operation which can be used if your field has no |
| | 60 | * internal representation. |
| | 61 | */ |
| | 62 | |
| | 63 | mp *field_id(field *f, mp *d, mp *x) |
| | 64 | { |
| | 65 | x = MP_COPY(x); |
| | 66 | if (d) MP_DROP(d); |
| | 67 | return (x); |
| | 68 | } |
| | 69 | |
| | 70 | /*----- That's all, folks -------------------------------------------------*/ |
projects / u / mdw / catacomb / blame_incremental