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- /* ctc_ecc.h
- *
- * Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
- *
- * This file is part of CyaSSL.
- *
- * CyaSSL is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * CyaSSL 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
- #ifdef HAVE_ECC
- #ifndef CTAO_CRYPT_ECC_H
- #define CTAO_CRYPT_ECC_H
- #include "types.h"
- #include "integer.h"
- #include "random.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- enum {
- ECC_PUBLICKEY = 1,
- ECC_PRIVATEKEY = 2,
- ECC_MAXNAME = 16, /* MAX CURVE NAME LENGTH */
- SIG_HEADER_SZ = 6, /* ECC signature header size */
- ECC_BUFSIZE = 256, /* for exported keys temp buffer */
- ECC_MAXSIZE = 66 /* MAX Private Key size */
- };
- /* ECC set type defined a NIST GF(p) curve */
- typedef struct {
- int size; /* The size of the curve in octets */
- char* name; /* name of this curve */
- char* prime; /* prime that defines the field the curve is in (hex) */
- char* B; /* fields B param (hex) */
- char* order; /* order of the curve (hex) */
- char* Gx; /* x coordinate of the base point on curve (hex) */
- char* Gy; /* y coordinate of the base point on curve (hex) */
- } ecc_set_type;
- /* A point on an ECC curve, stored in Jacbobian format such that (x,y,z) =>
- (x/z^2, y/z^3, 1) when interpreted as affine */
- typedef struct {
- mp_int x; /* The x coordinate */
- mp_int y; /* The y coordinate */
- mp_int z; /* The z coordinate */
- } ecc_point;
- /* An ECC Key */
- typedef struct {
- int type; /* Public or Private */
- int idx; /* Index into the ecc_sets[] for the parameters of
- this curve if -1, this key is using user supplied
- curve in dp */
- const ecc_set_type* dp; /* domain parameters, either points to NIST
- curves (idx >= 0) or user supplied */
- ecc_point pubkey; /* public key */
- mp_int k; /* private key */
- } ecc_key;
- /* ECC predefined curve sets */
- extern const ecc_set_type ecc_sets[];
- int ecc_make_key(RNG* rng, int keysize, ecc_key* key);
- int ecc_shared_secret(ecc_key* private_key, ecc_key* public_key, byte* out,
- word32* outlen);
- int ecc_sign_hash(const byte* in, word32 inlen, byte* out, word32 *outlen,
- RNG* rng, ecc_key* key);
- int ecc_verify_hash(const byte* sig, word32 siglen, byte* hash, word32 hashlen,
- int* stat, ecc_key* key);
- void ecc_init(ecc_key* key);
- void ecc_free(ecc_key* key);
- /* ASN key helpers */
- int ecc_export_x963(ecc_key*, byte* out, word32* outLen);
- int ecc_import_x963(const byte* in, word32 inLen, ecc_key* key);
- int ecc_import_private_key(const byte* priv, word32 privSz, const byte* pub,
- word32 pubSz, ecc_key* key);
- /* size helper */
- int ecc_size(ecc_key* key);
- int ecc_sig_size(ecc_key* key);
- /* TODO: fix mutex types */
- #define MUTEX_GLOBAL(x) int (x);
- #define MUTEX_LOCK(x)
- #define MUTEX_UNLOCK(x)
- #ifdef __cplusplus
- } /* extern "C" */
- #endif
- #endif /* CTAO_CRYPT_ECC_H */
- #endif /* HAVE_ECC */
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