| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: ec-keys.h,v 1.2 2004/04/01 12:50:09 mdw Exp $ |
| 4 | * |
| 5 | * Elliptic curve key-fetching |
| 6 | * |
| 7 | * (c) 2004 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: ec-keys.h,v $ |
| 33 | * Revision 1.2 2004/04/01 12:50:09 mdw |
| 34 | * Add cyclic group abstraction, with test code. Separate off exponentation |
| 35 | * functions for better static linking. Fix a buttload of bugs on the way. |
| 36 | * Generally ensure that negative exponents do inversion correctly. Add |
| 37 | * table of standard prime-field subgroups. (Binary field subgroups are |
| 38 | * currently unimplemented but easy to add if anyone ever finds a good one.) |
| 39 | * |
| 40 | * Revision 1.1 2004/03/28 01:58:47 mdw |
| 41 | * Generate, store and retreive elliptic curve keys. |
| 42 | * |
| 43 | */ |
| 44 | |
| 45 | #ifndef CATACOMB_EC_KEYS_H |
| 46 | #define CATACOMB_EC_KEYS_H |
| 47 | |
| 48 | #ifdef __cplusplus |
| 49 | extern "C" { |
| 50 | #endif |
| 51 | |
| 52 | /*----- Header files ------------------------------------------------------*/ |
| 53 | |
| 54 | #ifndef CATACOMB_EC_H |
| 55 | # include "ec.h" |
| 56 | #endif |
| 57 | |
| 58 | #ifndef CATACOMB_KEY_H |
| 59 | # include "key.h" |
| 60 | #endif |
| 61 | |
| 62 | /*----- Key structures ----------------------------------------------------*/ |
| 63 | |
| 64 | typedef struct ec_param { |
| 65 | ec_info ei; /* Curve information */ |
| 66 | char *cstr; /* Curve definition string */ |
| 67 | } ec_param; |
| 68 | |
| 69 | typedef struct ec_pub { |
| 70 | ec_info ei; /* Curve information */ |
| 71 | char *cstr; /* Curve definition string */ |
| 72 | ec p; /* Public point */ |
| 73 | } ec_pub; |
| 74 | |
| 75 | typedef struct ec_priv { |
| 76 | ec_info ei; /* Curve information */ |
| 77 | char *cstr; /* Curve definition string */ |
| 78 | ec p; /* Public point */ |
| 79 | mp *x; /* Secret exponent */ |
| 80 | } ec_priv; |
| 81 | |
| 82 | extern const key_fetchdef ec_paramfetch[]; |
| 83 | #define EC_PARAMFETCHSZ 3 |
| 84 | |
| 85 | extern const key_fetchdef ec_pubfetch[]; |
| 86 | #define EC_PUBFETCHSZ 4 |
| 87 | |
| 88 | extern const key_fetchdef ec_privfetch[]; |
| 89 | #define EC_PRIVFETCHSZ 7 |
| 90 | |
| 91 | /*----- Functions provided ------------------------------------------------*/ |
| 92 | |
| 93 | /* --- @ec_paramfree@, @ec_pubfree@, @ec_privfree@ --- * |
| 94 | * |
| 95 | * Arguments: @ec_param *ep@, @ec_pub *ep@, @ec_priv *ep@ = pointer to |
| 96 | * key block to free |
| 97 | * |
| 98 | * Returns: --- |
| 99 | * |
| 100 | * Use: Frees an elliptic curve key block |
| 101 | */ |
| 102 | |
| 103 | extern void ec_paramfree(ec_param */*ep*/); |
| 104 | extern void ec_pubfree(ec_pub */*ep*/); |
| 105 | extern void ec_privfree(ec_priv */*ep*/); |
| 106 | |
| 107 | /*----- That's all, folks -------------------------------------------------*/ |
| 108 | |
| 109 | #ifdef __cplusplus |
| 110 | } |
| 111 | #endif |
| 112 | |
| 113 | #endif |