181 lines
5.0 KiB
C
181 lines
5.0 KiB
C
/* ecc.h
|
|
*
|
|
* Copyright (C) 2006-2013 wolfSSL Inc.
|
|
*
|
|
* 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 <cyassl/ctaocrypt/types.h>
|
|
#include <cyassl/ctaocrypt/integer.h>
|
|
#include <cyassl/ctaocrypt/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_MINSIZE = 20, /* MIN Private Key size */
|
|
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 */
|
|
const char* name; /* name of this curve */
|
|
const char* prime; /* prime that defines the field, curve is in (hex) */
|
|
const char* Bf; /* fields B param (hex) */
|
|
const char* order; /* order of the curve (hex) */
|
|
const char* Gx; /* x coordinate of the base point on curve (hex) */
|
|
const 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[];
|
|
|
|
|
|
CYASSL_API
|
|
int ecc_make_key(RNG* rng, int keysize, ecc_key* key);
|
|
CYASSL_API
|
|
int ecc_shared_secret(ecc_key* private_key, ecc_key* public_key, byte* out,
|
|
word32* outlen);
|
|
CYASSL_API
|
|
int ecc_sign_hash(const byte* in, word32 inlen, byte* out, word32 *outlen,
|
|
RNG* rng, ecc_key* key);
|
|
CYASSL_API
|
|
int ecc_verify_hash(const byte* sig, word32 siglen, const byte* hash,
|
|
word32 hashlen, int* stat, ecc_key* key);
|
|
CYASSL_API
|
|
void ecc_init(ecc_key* key);
|
|
CYASSL_API
|
|
void ecc_free(ecc_key* key);
|
|
CYASSL_API
|
|
void ecc_fp_free(void);
|
|
|
|
|
|
/* ASN key helpers */
|
|
CYASSL_API
|
|
int ecc_export_x963(ecc_key*, byte* out, word32* outLen);
|
|
CYASSL_API
|
|
int ecc_import_x963(const byte* in, word32 inLen, ecc_key* key);
|
|
CYASSL_API
|
|
int ecc_import_private_key(const byte* priv, word32 privSz, const byte* pub,
|
|
word32 pubSz, ecc_key* key);
|
|
CYASSL_API
|
|
int ecc_export_private_only(ecc_key* key, byte* out, word32* outLen);
|
|
|
|
/* size helper */
|
|
CYASSL_API
|
|
int ecc_size(ecc_key* key);
|
|
CYASSL_API
|
|
int ecc_sig_size(ecc_key* key);
|
|
|
|
|
|
#ifdef HAVE_ECC_ENCRYPT
|
|
/* ecc encrypt */
|
|
|
|
enum ecEncAlgo {
|
|
ecAES_128_CBC = 1, /* default */
|
|
ecAES_256_CBC = 2
|
|
};
|
|
|
|
enum ecKdfAlgo {
|
|
ecHKDF_SHA256 = 1, /* default */
|
|
ecHKDF_SHA1 = 2
|
|
};
|
|
|
|
enum ecMacAlgo {
|
|
ecHMAC_SHA256 = 1, /* default */
|
|
ecHMAC_SHA1 = 2
|
|
};
|
|
|
|
enum {
|
|
KEY_SIZE_128 = 16,
|
|
KEY_SIZE_256 = 32,
|
|
IV_SIZE_64 = 8,
|
|
EXCHANGE_SALT_SZ = 16,
|
|
EXCHANGE_INFO_SZ = 23
|
|
};
|
|
|
|
enum ecFlags {
|
|
REQ_RESP_CLIENT = 1,
|
|
REQ_RESP_SERVER = 2
|
|
};
|
|
|
|
|
|
typedef struct ecEncCtx ecEncCtx;
|
|
|
|
CYASSL_API
|
|
ecEncCtx* ecc_ctx_new(int flags, RNG* rng);
|
|
CYASSL_API
|
|
void ecc_ctx_free(ecEncCtx*);
|
|
|
|
CYASSL_API
|
|
const byte* ecc_ctx_get_own_salt(ecEncCtx*);
|
|
CYASSL_API
|
|
int ecc_ctx_set_peer_salt(ecEncCtx*, const byte* salt);
|
|
|
|
CYASSL_API
|
|
int ecc_encrypt(ecc_key* privKey, ecc_key* pubKey, const byte* msg,
|
|
word32 msgSz, byte* out, word32* outSz, ecEncCtx* ctx);
|
|
CYASSL_API
|
|
int ecc_decrypt(ecc_key* privKey, ecc_key* pubKey, const byte* msg,
|
|
word32 msgSz, byte* out, word32* outSz, ecEncCtx* ctx);
|
|
|
|
#endif /* HAVE_ECC_ENCRYPT */
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* CTAO_CRYPT_ECC_H */
|
|
#endif /* HAVE_ECC */
|