Method: OpenSSL::PKey::EC::Point#to_octet_string

Defined in:
ossl_pkey_ec.c

#to_octet_string(conversion_form) ⇒ String

Returns the octet string representation of the elliptic curve point.

conversion_form specifies how the point is converted. Possible values are:

  • :compressed

  • :uncompressed

  • :hybrid

Returns:

  • (String) 


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# File 'ossl_pkey_ec.c', line 1426

static VALUE
ossl_ec_point_to_octet_string(VALUE self, VALUE conversion_form)
{
    EC_POINT *point;
    const EC_GROUP *group;
    point_conversion_form_t form;
    VALUE str;
    size_t len;

    GetECPoint(self, point);
    GetECPointGroup(self, group);
    form = parse_point_conversion_form_symbol(conversion_form);

    len = EC_POINT_point2oct(group, point, form, NULL, 0, ossl_bn_ctx);
    if (!len)
	ossl_raise(eEC_POINT, "EC_POINT_point2oct");
    str = rb_str_new(NULL, (long)len);
    if (!EC_POINT_point2oct(group, point, form,
			    (unsigned char *)RSTRING_PTR(str), len,
			    ossl_bn_ctx))
	ossl_raise(eEC_POINT, "EC_POINT_point2oct");
    return str;
}