static VALUE ossl_ec_point_initialize(int argc, VALUE *argv, VALUE self)
{
EC_POINT *point;
VALUE group_v, arg2;
const EC_GROUP *group;
TypedData_Get_Struct(self, EC_POINT, &ossl_ec_point_type, point);
if (point)
rb_raise(eEC_POINT, "EC_POINT already initialized");
rb_scan_args(argc, argv, "11", &group_v, &arg2);
if (rb_obj_is_kind_of(group_v, cEC_POINT)) {
if (argc != 1)
rb_raise(rb_eArgError, "invalid second argument");
return ossl_ec_point_initialize_copy(self, group_v);
}
GetECGroup(group_v, group);
if (argc == 1) {
point = EC_POINT_new(group);
if (!point)
ossl_raise(eEC_POINT, "EC_POINT_new");
}
else {
if (rb_obj_is_kind_of(arg2, cBN)) {
point = EC_POINT_bn2point(group, GetBNPtr(arg2), NULL, ossl_bn_ctx);
if (!point)
ossl_raise(eEC_POINT, "EC_POINT_bn2point");
}
else {
StringValue(arg2);
point = EC_POINT_new(group);
if (!point)
ossl_raise(eEC_POINT, "EC_POINT_new");
if (!EC_POINT_oct2point(group, point,
(unsigned char *)RSTRING_PTR(arg2),
RSTRING_LEN(arg2), ossl_bn_ctx)) {
EC_POINT_free(point);
ossl_raise(eEC_POINT, "EC_POINT_oct2point");
}
}
}
RTYPEDDATA_DATA(self) = point;
rb_ivar_set(self, id_i_group, group_v);
return self;
}
Creates a new instance of OpenSSL::PKey::EC::Point
. If the only argument is an instance of EC::Point
, a copy is returned. Otherwise, creates a point that belongs to group.
encoded_point is the octet string representation of the point. This must be either a String
or an OpenSSL::BN
.
static VALUE ossl_ec_point_add(VALUE self, VALUE other)
{
EC_POINT *point_self, *point_other, *point_result;
const EC_GROUP *group;
VALUE group_v = rb_attr_get(self, id_i_group);
VALUE result;
GetECPoint(self, point_self);
GetECPoint(other, point_other);
GetECGroup(group_v, group);
result = rb_obj_alloc(cEC_POINT);
ossl_ec_point_initialize(1, &group_v, result);
GetECPoint(result, point_result);
if (EC_POINT_add(group, point_result, point_self, point_other, ossl_bn_ctx) != 1) {
ossl_raise(eEC_POINT, "EC_POINT_add");
}
return result;
}
Performs elliptic curve point addition.
static VALUE ossl_ec_point_eql(VALUE a, VALUE b)
{
EC_POINT *point1, *point2;
VALUE group_v1 = rb_attr_get(a, id_i_group);
VALUE group_v2 = rb_attr_get(b, id_i_group);
const EC_GROUP *group;
if (ossl_ec_group_eql(group_v1, group_v2) == Qfalse)
return Qfalse;
GetECPoint(a, point1);
GetECPoint(b, point2);
GetECGroup(group_v1, group);
if (EC_POINT_cmp(group, point1, point2, ossl_bn_ctx) == 1)
return Qfalse;
return Qtrue;
}
static VALUE ossl_ec_point_is_at_infinity(VALUE self)
{
EC_POINT *point;
const EC_GROUP *group;
GetECPoint(self, point);
GetECPointGroup(self, group);
switch (EC_POINT_is_at_infinity(group, point)) {
case 1: return Qtrue;
case 0: return Qfalse;
default: ossl_raise(cEC_POINT, "EC_POINT_is_at_infinity");
}
UNREACHABLE;
}
static VALUE
ossl_ec_point_initialize_copy(VALUE self, VALUE other)
{
EC_POINT *point, *point_new;
EC_GROUP *group;
VALUE group_v;
TypedData_Get_Struct(self, EC_POINT, &ossl_ec_point_type, point_new);
if (point_new)
ossl_raise(eEC_POINT, "EC::Point already initialized");
GetECPoint(other, point);
group_v = rb_obj_dup(rb_attr_get(other, id_i_group));
GetECGroup(group_v, group);
point_new = EC_POINT_dup(point, group);
if (!point_new)
ossl_raise(eEC_POINT, "EC_POINT_dup");
RTYPEDDATA_DATA(self) = point_new;
rb_ivar_set(self, id_i_group, group_v);
return self;
}
static VALUE ossl_ec_point_invert(VALUE self)
{
EC_POINT *point;
const EC_GROUP *group;
GetECPoint(self, point);
GetECPointGroup(self, group);
if (EC_POINT_invert(group, point, ossl_bn_ctx) != 1)
ossl_raise(cEC_POINT, "EC_POINT_invert");
return self;
}
static VALUE ossl_ec_point_make_affine(VALUE self)
{
EC_POINT *point;
const EC_GROUP *group;
GetECPoint(self, point);
GetECPointGroup(self, group);
rb_warn("OpenSSL::PKey::EC::Point#make_affine! is deprecated");
#if !OSSL_OPENSSL_PREREQ(3, 0, 0)
if (EC_POINT_make_affine(group, point, ossl_bn_ctx) != 1)
ossl_raise(cEC_POINT, "EC_POINT_make_affine");
#endif
return self;
}
This method is deprecated and should not be used. This is a no-op.
static VALUE ossl_ec_point_mul(int argc, VALUE *argv, VALUE self)
{
EC_POINT *point_self, *point_result;
const EC_GROUP *group;
VALUE group_v = rb_attr_get(self, id_i_group);
VALUE arg1, arg2, arg3, result;
const BIGNUM *bn_g = NULL;
GetECPoint(self, point_self);
GetECGroup(group_v, group);
result = rb_obj_alloc(cEC_POINT);
ossl_ec_point_initialize(1, &group_v, result);
GetECPoint(result, point_result);
rb_scan_args(argc, argv, "12", &arg1, &arg2, &arg3);
if (!RB_TYPE_P(arg1, T_ARRAY)) {
BIGNUM *bn = GetBNPtr(arg1);
if (!NIL_P(arg2))
bn_g = GetBNPtr(arg2);
if (EC_POINT_mul(group, point_result, bn_g, point_self, bn, ossl_bn_ctx) != 1)
ossl_raise(eEC_POINT, NULL);
} else {
#if (defined(OPENSSL_VERSION_MAJOR) && OPENSSL_VERSION_MAJOR >= 3) || defined(LIBRESSL_VERSION_NUMBER)
rb_raise(rb_eNotImpError, "calling #mul with arrays is not" \
"supported by this OpenSSL version");
#else
/*
* bignums | arg1[0] | arg1[1] | arg1[2] | ...
* points | self | arg2[0] | arg2[1] | ...
*/
long i, num;
VALUE bns_tmp, tmp_p, tmp_b;
const EC_POINT **points;
const BIGNUM **bignums;
Check_Type(arg1, T_ARRAY);
Check_Type(arg2, T_ARRAY);
if (RARRAY_LEN(arg1) != RARRAY_LEN(arg2) + 1) /* arg2 must be 1 larger */
ossl_raise(rb_eArgError, "bns must be 1 longer than points; see the documentation");
rb_warning("OpenSSL::PKey::EC::Point#mul(ary, ary) is deprecated; " \
"use #mul(bn) form instead");
num = RARRAY_LEN(arg1);
bns_tmp = rb_ary_tmp_new(num);
bignums = ALLOCV_N(const BIGNUM *, tmp_b, num);
for (i = 0; i < num; i++) {
VALUE item = RARRAY_AREF(arg1, i);
bignums[i] = GetBNPtr(item);
rb_ary_push(bns_tmp, item);
}
points = ALLOCV_N(const EC_POINT *, tmp_p, num);
points[0] = point_self; /* self */
for (i = 0; i < num - 1; i++)
GetECPoint(RARRAY_AREF(arg2, i), points[i + 1]);
if (!NIL_P(arg3))
bn_g = GetBNPtr(arg3);
if (EC_POINTs_mul(group, point_result, bn_g, num, points, bignums, ossl_bn_ctx) != 1) {
ALLOCV_END(tmp_b);
ALLOCV_END(tmp_p);
ossl_raise(eEC_POINT, NULL);
}
ALLOCV_END(tmp_b);
ALLOCV_END(tmp_p);
#endif
}
return result;
}
Performs elliptic curve point multiplication.
The first form calculates bn1 * point + bn2 * G
, where G
is the generator of the group of point. bn2 may be omitted, and in that case, the result is just bn1 * point
.
The second form calculates bns[0] * point + bns[1] * points[0] + ... + bns[-1] * points[-1] + bn2 * G
. bn2 may be omitted. bns must be an array of OpenSSL::BN
. points must be an array of OpenSSL::PKey::EC::Point
. Please note that points[0]
is not multiplied by bns[0]
, but bns[1]
.
static VALUE ossl_ec_point_is_on_curve(VALUE self)
{
EC_POINT *point;
const EC_GROUP *group;
GetECPoint(self, point);
GetECPointGroup(self, group);
switch (EC_POINT_is_on_curve(group, point, ossl_bn_ctx)) {
case 1: return Qtrue;
case 0: return Qfalse;
default: ossl_raise(cEC_POINT, "EC_POINT_is_on_curve");
}
UNREACHABLE;
}
static VALUE ossl_ec_point_set_to_infinity(VALUE self)
{
EC_POINT *point;
const EC_GROUP *group;
GetECPoint(self, point);
GetECPointGroup(self, group);
if (EC_POINT_set_to_infinity(group, point) != 1)
ossl_raise(cEC_POINT, "EC_POINT_set_to_infinity");
return self;
}
# File tmp/rubies/ruby-3.1.3/ext/openssl/lib/openssl/pkey.rb, line 307
def to_bn(conversion_form = group.point_conversion_form)
OpenSSL::BN.new(to_octet_string(conversion_form), 2)
end
Returns the octet string representation of the EC
point as an instance of OpenSSL::BN
.
If conversion_form is not given, the point_conversion_form attribute set to the group is used.
See to_octet_string
for more information.
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;
}
Returns the octet string representation of the elliptic curve point.
conversion_form specifies how the point is converted. Possible values are:
-
:compressed
-
:uncompressed
-
:hybrid