ecc_key.h File Reference

#include "btc.h"
#include <stdio.h>
#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	btc_key_
struct	btc_pubkey_

Typedefs
typedef struct btc_key_	btc_key
typedef struct btc_pubkey_	btc_pubkey

Functions
LIBBTC_API void	btc_privkey_init (btc_key *privkey)
LIBBTC_API btc_bool	btc_privkey_is_valid (btc_key *privkey)
LIBBTC_API void	btc_privkey_cleanse (btc_key *privkey)
LIBBTC_API void	btc_privkey_gen (btc_key *privkey)
LIBBTC_API btc_bool	btc_privkey_verify_pubkey (btc_key *privkey, btc_pubkey *pubkey)
LIBBTC_API void	btc_pubkey_init (btc_pubkey *pubkey)
LIBBTC_API btc_bool	btc_pubkey_is_valid (btc_pubkey *pubkey)
LIBBTC_API void	btc_pubkey_cleanse (btc_pubkey *pubkey)
LIBBTC_API void	btc_pubkey_from_key (btc_key *privkey, btc_pubkey *pubkey_inout)
LIBBTC_API void	btc_pubkey_get_hash160 (const btc_pubkey *pubkey, uint8_t *hash160)
LIBBTC_API btc_bool	btc_key_sign_hash (const btc_key *privkey, const uint8_t *hash, unsigned char *sigout, size_t *outlen)
LIBBTC_API btc_bool	btc_pubkey_verify_sig (const btc_pubkey *pubkey, const uint8_t *hash, unsigned char *sigder, int len)

Typedef Documentation

typedef struct btc_key_ btc_key

typedef struct btc_pubkey_ btc_pubkey

Function Documentation

LIBBTC_API btc_bool btc_key_sign_hash	(	const btc_key *	privkey,
		const uint8_t *	hash,
		unsigned char *	sigout,
		size_t *	outlen
	)

Definition at line 130 of file ecc_key.c.

References ecc_sign(), and btc_key_::privkey.

Referenced by btc_privkey_verify_pubkey().

{
    return ecc_sign(privkey->privkey, hash, sigout, outlen);
}

LIBBTC_API void btc_privkey_cleanse

(

btc_key *

privkey

)

Definition at line 54 of file ecc_key.c.

References BTC_ECKEY_PKEY_LENGTH, and btc_key_::privkey.

{
    memset(&privkey->privkey, 0, BTC_ECKEY_PKEY_LENGTH);
}

LIBBTC_API void btc_privkey_gen

(

btc_key *

privkey

)

Definition at line 60 of file ecc_key.c.

References BTC_ECKEY_PKEY_LENGTH, ecc_verify_privatekey(), btc_key_::privkey, and random_bytes().

{
    if (privkey == NULL)
        return;

    do {
        random_bytes(privkey->privkey, BTC_ECKEY_PKEY_LENGTH, 0);
    } while (ecc_verify_privatekey(privkey->privkey) == 0);
}

LIBBTC_API void btc_privkey_init

(

btc_key *

privkey

)

Definition at line 42 of file ecc_key.c.

References BTC_ECKEY_PKEY_LENGTH, and btc_key_::privkey.

{
    memset(&privkey->privkey, 0, BTC_ECKEY_PKEY_LENGTH);
}

LIBBTC_API btc_bool btc_privkey_is_valid

(

btc_key *

privkey

)

Definition at line 48 of file ecc_key.c.

References ecc_verify_privatekey(), and btc_key_::privkey.

{
    return ecc_verify_privatekey(privkey->privkey);
}

LIBBTC_API btc_bool btc_privkey_verify_pubkey	(	btc_key *	privkey,
		btc_pubkey *	pubkey
	)

Definition at line 71 of file ecc_key.c.

References btc_hash(), btc_key_sign_hash(), btc_pubkey_verify_sig(), and random_bytes().

{
    uint8_t rnddata[32], hash[32];
    random_bytes(rnddata, 32, 0);
    btc_hash(rnddata, 32, hash);

    unsigned char sig[74];
    size_t siglen = 74;

    if (!btc_key_sign_hash(privkey, hash, sig, &siglen))
        return false;

    return btc_pubkey_verify_sig(pubkey, hash, sig, siglen);
}

LIBBTC_API void btc_pubkey_cleanse

(

btc_pubkey *

pubkey

)

Definition at line 103 of file ecc_key.c.

References BTC_ECKEY_UNCOMPRESSED_LENGTH, and btc_pubkey_::pubkey.

{
    if (pubkey == NULL)
        return;

    memset(pubkey->pubkey, 0, BTC_ECKEY_UNCOMPRESSED_LENGTH);
}

LIBBTC_API void btc_pubkey_from_key	(	btc_key *	privkey,
		btc_pubkey *	pubkey_inout
	)

Definition at line 118 of file ecc_key.c.

References BTC_ECKEY_COMPRESSED_LENGTH, btc_pubkey_::compressed, ecc_get_pubkey(), btc_key_::privkey, and btc_pubkey_::pubkey.

{
    if (pubkey_inout == NULL || privkey == NULL)
        return;

    size_t in_out_len = BTC_ECKEY_COMPRESSED_LENGTH;

    ecc_get_pubkey(privkey->privkey, pubkey_inout->pubkey, &in_out_len, true);
    pubkey_inout->compressed = true;
}

LIBBTC_API void btc_pubkey_get_hash160	(	const btc_pubkey *	pubkey,
		uint8_t *	hash160
	)

Definition at line 112 of file ecc_key.c.

References BTC_ECKEY_COMPRESSED_LENGTH, BTC_ECKEY_UNCOMPRESSED_LENGTH, btc_pubkey_::compressed, btc_pubkey_::pubkey, and ripemd160().

Referenced by btc_tx_add_p2pkh_out().

{
    ripemd160(pubkey->pubkey, pubkey->compressed ? BTC_ECKEY_COMPRESSED_LENGTH : BTC_ECKEY_UNCOMPRESSED_LENGTH, hash160);
}

LIBBTC_API void btc_pubkey_init

(

btc_pubkey *

pubkey

)

Definition at line 87 of file ecc_key.c.

References BTC_ECKEY_UNCOMPRESSED_LENGTH, btc_pubkey_::compressed, and btc_pubkey_::pubkey.

{
    if (pubkey == NULL)
        return;

    memset(pubkey->pubkey, 0, BTC_ECKEY_UNCOMPRESSED_LENGTH);
    pubkey->compressed = false;
}

LIBBTC_API btc_bool btc_pubkey_is_valid

(

btc_pubkey *

pubkey

)

Definition at line 97 of file ecc_key.c.

References btc_pubkey_::compressed, ecc_verify_pubkey(), and btc_pubkey_::pubkey.

{
    return ecc_verify_pubkey(pubkey->pubkey, pubkey->compressed);
}

LIBBTC_API btc_bool btc_pubkey_verify_sig	(	const btc_pubkey *	pubkey,
		const uint8_t *	hash,
		unsigned char *	sigder,
		int	len
	)

Definition at line 136 of file ecc_key.c.

References btc_pubkey_::compressed, ecc_verify_sig(), and btc_pubkey_::pubkey.

Referenced by btc_privkey_verify_pubkey().

{
    return ecc_verify_sig(pubkey->pubkey, pubkey->compressed, hash, sigder, len);
}