C++ (Cpp) secp256k1_ecdsa_pubkey_serialize示例

示例#1

文件： secp256k1.c 项目： BWallet/secp256k1

int secp256k1_ecdsa_pubkey_tweak_add(unsigned char *pubkey, int pubkeylen, const unsigned char *tweak) {
    int ret = 1;
    secp256k1_num_t term;
    secp256k1_num_init(&term);
    secp256k1_num_set_bin(&term, tweak, 32);
    if (secp256k1_num_cmp(&term, &secp256k1_ge_consts->order) >= 0)
        ret = 0;
    secp256k1_ge_t p;
    if (ret) {
        if (!secp256k1_ecdsa_pubkey_parse(&p, pubkey, pubkeylen))
            ret = 0;
    }
    if (ret) {
        secp256k1_gej_t pt;
        secp256k1_ecmult_gen(&pt, &term);
        secp256k1_gej_add_ge(&pt, &pt, &p);
        if (secp256k1_gej_is_infinity(&pt))
            ret = 0;
        secp256k1_ge_set_gej(&p, &pt);
        int oldlen = pubkeylen;
        secp256k1_ecdsa_pubkey_serialize(&p, pubkey, &pubkeylen, oldlen <= 33);
        assert(pubkeylen == oldlen);
    }
    secp256k1_num_free(&term);
    return ret;
}

示例#2

文件： secp256k1.c 项目： BWallet/secp256k1

int secp256k1_ecdsa_pubkey_tweak_mul(unsigned char *pubkey, int pubkeylen, const unsigned char *tweak) {
    int ret = 1;
    secp256k1_num_t factor;
    secp256k1_num_init(&factor);
    secp256k1_num_set_bin(&factor, tweak, 32);
    if (secp256k1_num_is_zero(&factor))
        ret = 0;
    if (secp256k1_num_cmp(&factor, &secp256k1_ge_consts->order) >= 0)
        ret = 0;
    secp256k1_ge_t p;
    if (ret) {
        if (!secp256k1_ecdsa_pubkey_parse(&p, pubkey, pubkeylen))
            ret = 0;
    }
    if (ret) {
        secp256k1_num_t zero;
        secp256k1_num_init(&zero);
        secp256k1_num_set_int(&zero, 0);
        secp256k1_gej_t pt;
        secp256k1_gej_set_ge(&pt, &p);
        secp256k1_ecmult(&pt, &pt, &factor, &zero);
        secp256k1_num_free(&zero);
        secp256k1_ge_set_gej(&p, &pt);
        int oldlen = pubkeylen;
        secp256k1_ecdsa_pubkey_serialize(&p, pubkey, &pubkeylen, oldlen <= 33);
        assert(pubkeylen == oldlen);
    }
    secp256k1_num_free(&factor);
    return ret;
}

示例#3

文件： secp256k1.c 项目： TheBlueMatt/secp256k1

int secp256k1_ecdsa_pubkey_tweak_add(unsigned char *pubkey, int pubkeylen, const unsigned char *tweak) {
    DEBUG_CHECK(secp256k1_ecmult_consts != NULL);
    DEBUG_CHECK(pubkey != NULL);
    DEBUG_CHECK(tweak != NULL);

    int ret = 1;
    secp256k1_num_t term;
    secp256k1_num_init(&term);
    secp256k1_num_set_bin(&term, tweak, 32);
    if (secp256k1_num_cmp(&term, &secp256k1_ge_consts->order) >= 0)
        ret = 0;
    secp256k1_ge_t p;
    if (ret) {
        if (!secp256k1_ecdsa_pubkey_parse(&p, pubkey, pubkeylen))
            ret = 0;
    }
    if (ret) {
        secp256k1_gej_t pt;
        secp256k1_gej_set_ge(&pt, &p);
        secp256k1_num_t one;
        secp256k1_num_init(&one);
        secp256k1_num_set_int(&one, 1);
        secp256k1_ecmult(&pt, &pt, &one, &term);
        secp256k1_num_free(&one);
        if (secp256k1_gej_is_infinity(&pt))
            ret = 0;
        secp256k1_ge_set_gej(&p, &pt);
        int oldlen = pubkeylen;
        secp256k1_ecdsa_pubkey_serialize(&p, pubkey, &pubkeylen, oldlen <= 33);
        VERIFY_CHECK(pubkeylen == oldlen);
    }
    secp256k1_num_free(&term);
    return ret;
}

示例#4

文件： secp256k1.c 项目： BWallet/secp256k1

int secp256k1_ecdsa_pubkey_decompress(unsigned char *pubkey, int *pubkeylen) {
    secp256k1_ge_t p;
    if (!secp256k1_ecdsa_pubkey_parse(&p, pubkey, *pubkeylen))
        return 0;
    secp256k1_ecdsa_pubkey_serialize(&p, pubkey, pubkeylen, 0);
    return 1;
}

示例#5

文件： secp256k1.c 项目： TheBlueMatt/secp256k1

int secp256k1_ecdsa_recover_compact(const unsigned char *msg, int msglen, const unsigned char *sig64, unsigned char *pubkey, int *pubkeylen, int compressed, int recid) {
    DEBUG_CHECK(secp256k1_ecmult_consts != NULL);
    DEBUG_CHECK(msg != NULL);
    DEBUG_CHECK(msglen <= 32);
    DEBUG_CHECK(sig64 != NULL);
    DEBUG_CHECK(pubkey != NULL);
    DEBUG_CHECK(pubkeylen != NULL);
    DEBUG_CHECK(recid >= 0 && recid <= 3);

    int ret = 0;
    secp256k1_num_t m; 
    secp256k1_num_init(&m);
    secp256k1_ecdsa_sig_t sig;
    secp256k1_ecdsa_sig_init(&sig);
    secp256k1_num_set_bin(&sig.r, sig64, 32);
    secp256k1_num_set_bin(&sig.s, sig64 + 32, 32);
    secp256k1_num_set_bin(&m, msg, msglen);

    secp256k1_ge_t q;
    if (secp256k1_ecdsa_sig_recover(&sig, &q, &m, recid)) {
        secp256k1_ecdsa_pubkey_serialize(&q, pubkey, pubkeylen, compressed);
        ret = 1;
    }
    secp256k1_ecdsa_sig_free(&sig);
    secp256k1_num_free(&m);
    return ret;
}

示例#6

文件： secp256k1.c 项目： TheBlueMatt/secp256k1

int secp256k1_ecdsa_pubkey_compress(unsigned char *pubkey, int *pubkeylen) {
    DEBUG_CHECK(pubkey != NULL);
    DEBUG_CHECK(pubkeylen != NULL);

    secp256k1_ge_t p;
    if (!secp256k1_ecdsa_pubkey_parse(&p, pubkey, *pubkeylen))
        return 0;
    secp256k1_ecdsa_pubkey_serialize(&p, pubkey, pubkeylen, 1);
    return 1;
}

示例#7

文件： secp256k1.c 项目： gitman/secp256k1

int secp256k1_ecdsa_pubkey_create(unsigned char *pubkey, int *pubkeylen, const unsigned char *seckey, int compressed) {
    secp256k1_num_t sec;
    secp256k1_num_init(&sec);
    secp256k1_num_set_bin(&sec, seckey, 32);
    secp256k1_gej_t pj;
    secp256k1_ecmult_gen(&pj, &sec);
    secp256k1_ge_t p;
    secp256k1_ge_set_gej(&p, &pj);
    secp256k1_ecdsa_pubkey_serialize(&p, pubkey, pubkeylen, compressed);
    return 1;
}

示例#8

文件： secp256k1.c 项目： TheBlueMatt/secp256k1

int secp256k1_ecdsa_pubkey_create(unsigned char *pubkey, int *pubkeylen, const unsigned char *seckey, int compressed) {
    DEBUG_CHECK(secp256k1_ecmult_gen_consts != NULL);
    DEBUG_CHECK(pubkey != NULL);
    DEBUG_CHECK(pubkeylen != NULL);
    DEBUG_CHECK(seckey != NULL);

    secp256k1_num_t sec;
    secp256k1_num_init(&sec);
    secp256k1_num_set_bin(&sec, seckey, 32);
    secp256k1_gej_t pj;
    secp256k1_ecmult_gen(&pj, &sec);
    secp256k1_num_clear(&sec);
    secp256k1_num_free(&sec);
    secp256k1_ge_t p;
    secp256k1_ge_set_gej(&p, &pj);
    secp256k1_ecdsa_pubkey_serialize(&p, pubkey, pubkeylen, compressed);
    return 1;
}

示例#9

文件： secp256k1.c 项目： BWallet/secp256k1

int secp256k1_ecdsa_recover_compact(const unsigned char *msg, int msglen, const unsigned char *sig64, unsigned char *pubkey, int *pubkeylen, int compressed, int recid) {
    int ret = 0;
    secp256k1_num_t m; 
    secp256k1_num_init(&m);
    secp256k1_ecdsa_sig_t sig;
    secp256k1_ecdsa_sig_init(&sig);
    secp256k1_num_set_bin(&sig.r, sig64, 32);
    secp256k1_num_set_bin(&sig.s, sig64 + 32, 32);
    secp256k1_num_set_bin(&m, msg, msglen);

    secp256k1_ge_t q;
    if (secp256k1_ecdsa_sig_recover(&sig, &q, &m, recid)) {
        secp256k1_ecdsa_pubkey_serialize(&q, pubkey, pubkeylen, compressed);
        ret = 1;
    }
    secp256k1_ecdsa_sig_free(&sig);
    secp256k1_num_free(&m);
    return ret;
}