C++ (Cpp) BN_get0_nist_prime_224 Beispiele

Beispiel #1

Datei: ecp_nist.c Projekt: 277800076/openssl

int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
                                const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
{
    int ret = 0;
    BN_CTX *new_ctx = NULL;

    if (ctx == NULL)
        if ((ctx = new_ctx = BN_CTX_new()) == NULL)
            return 0;

    BN_CTX_start(ctx);

    if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
        group->field_mod_func = BN_nist_mod_192;
    else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
        group->field_mod_func = BN_nist_mod_224;
    else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
        group->field_mod_func = BN_nist_mod_256;
    else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
        group->field_mod_func = BN_nist_mod_384;
    else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
        group->field_mod_func = BN_nist_mod_521;
    else {
        ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
        goto err;
    }

    ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);

 err:
    BN_CTX_end(ctx);
    BN_CTX_free(new_ctx);
    return ret;
}

Beispiel #2

Datei: ecp_nist.c Projekt: siredblood/tree-bumpkin-project

int ec_GFp_nist_group_set_curve(EC_GROUP *group, const BIGNUM *p,
                                const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
{
    int ret = 0;
    BN_CTX *new_ctx = NULL;
    BIGNUM *tmp_bn;

    if (ctx == NULL)
        if ((ctx = new_ctx = BN_CTX_new()) == NULL) return 0;

    BN_CTX_start(ctx);
    if ((tmp_bn = BN_CTX_get(ctx)) == NULL) goto err;

    if (BN_ucmp(BN_get0_nist_prime_192(), p) == 0)
        group->field_mod_func = BN_nist_mod_192;
    else if (BN_ucmp(BN_get0_nist_prime_224(), p) == 0)
    {
#ifndef NO_32_BIT_TYPE
        group->field_mod_func = BN_nist_mod_224;
#else
        ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_SUPPORTED_NIST_PRIME);
        goto err;
#endif
    }
    else if (BN_ucmp(BN_get0_nist_prime_256(), p) == 0)
    {
#ifndef NO_32_BIT_TYPE
        group->field_mod_func = BN_nist_mod_256;
#else
        ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_SUPPORTED_NIST_PRIME);
        goto err;
#endif
    }
    else if (BN_ucmp(BN_get0_nist_prime_384(), p) == 0)
    {
#ifndef NO_32_BIT_TYPE
        group->field_mod_func = BN_nist_mod_384;
#else
        ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_SUPPORTED_NIST_PRIME);
        goto err;
#endif
    }
    else if (BN_ucmp(BN_get0_nist_prime_521(), p) == 0)
        /* this one works in the NO_32_BIT_TYPE case */
        group->field_mod_func = BN_nist_mod_521;
    else
    {
        ECerr(EC_F_EC_GFP_NIST_GROUP_SET_CURVE, EC_R_NOT_A_NIST_PRIME);
        goto err;
    }

    ret = ec_GFp_simple_group_set_curve(group, p, a, b, ctx);

err:
    BN_CTX_end(ctx);
    if (new_ctx != NULL)
        BN_CTX_free(new_ctx);
    return ret;
}