view ecc.h @ 767:e465ed10c51d ecc

Be safer with how we handle ltc_ecc_sets[] (particularly with system libtomcrypt) A bit of progress with ecdsa code
author Matt Johnston <matt@ucc.asn.au>
date Tue, 09 Apr 2013 22:44:19 +0800
parents d1575fdc29a6
children 70625eed40c9
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#ifndef _DROPBEAR_ECC_H
#define _DROPBEAR_ECC_H

#include "includes.h"
#include "options.h"

#include "buffer.h"

#ifdef DROPBEAR_ECC

struct dropbear_ecc_curve {
	int ltc_size; // to match the byte sizes in ltc_ecc_sets[]
	const ltc_ecc_set_type *dp; // curve domain parameters
	const struct ltc_hash_descriptor *hashdesc;
	const char *name;
};

extern struct dropbear_ecc_curve ecc_curve_nistp256;
extern struct dropbear_ecc_curve ecc_curve_nistp384;
extern struct dropbear_ecc_curve ecc_curve_nistp521;
extern struct dropbear_ecc_curve *dropbear_ecc_curves[];

void dropbear_ecc_fill_dp();

// "pubkey" refers to a point, but LTC uses ecc_key structure for both public
// and private keys
void buf_put_ecc_raw_pubkey_string(buffer *buf, ecc_key *key);
ecc_key * buf_get_ecc_raw_pubkey(buffer *buf, const struct dropbear_ecc_curve *curve);
int buf_get_ecc_privkey_string(buffer *buf, ecc_key *key);

mp_int * dropbear_ecc_shared_secret(ecc_key *pub_key, ecc_key *priv_key);

#endif

#endif // _DROPBEAR_ECC_H