diff options
Diffstat (limited to 'ext/openssl/ossl_pkey_ec.c')
-rw-r--r-- | ext/openssl/ossl_pkey_ec.c | 141 |
1 files changed, 63 insertions, 78 deletions
diff --git a/ext/openssl/ossl_pkey_ec.c b/ext/openssl/ossl_pkey_ec.c index 9c406931..fbc71a6f 100644 --- a/ext/openssl/ossl_pkey_ec.c +++ b/ext/openssl/ossl_pkey_ec.c @@ -1319,76 +1319,61 @@ ec_point_new(const EC_POINT *point, const EC_GROUP *group) return obj; } +static VALUE ossl_ec_point_initialize_copy(VALUE, VALUE); /* * call-seq: * OpenSSL::PKey::EC::Point.new(point) - * OpenSSL::PKey::EC::Point.new(group) - * OpenSSL::PKey::EC::Point.new(group, bn) + * OpenSSL::PKey::EC::Point.new(group [, encoded_point]) * - * See the OpenSSL documentation for EC_POINT_* + * 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_initialize(int argc, VALUE *argv, VALUE self) { EC_POINT *point; - VALUE arg1, arg2; - VALUE group_v = Qnil; - const EC_GROUP *group = NULL; + VALUE group_v, arg2; + const EC_GROUP *group; TypedData_Get_Struct(self, EC_POINT, &ossl_ec_point_type, point); if (point) - ossl_raise(eEC_POINT, "EC_POINT already initialized"); - - switch (rb_scan_args(argc, argv, "11", &arg1, &arg2)) { - case 1: - if (rb_obj_is_kind_of(arg1, cEC_POINT)) { - const EC_POINT *arg_point; - - group_v = rb_attr_get(arg1, id_i_group); - GetECGroup(group_v, group); - GetECPoint(arg1, arg_point); - - point = EC_POINT_dup(arg_point, group); - } else if (rb_obj_is_kind_of(arg1, cEC_GROUP)) { - group_v = arg1; - GetECGroup(group_v, group); - - point = EC_POINT_new(group); - } else { - ossl_raise(eEC_POINT, "wrong argument type: must be OpenSSL::PKey::EC::Point or OpenSSL::Pkey::EC::Group"); - } + rb_raise(eEC_POINT, "EC_POINT already initialized"); - break; - case 2: - if (!rb_obj_is_kind_of(arg1, cEC_GROUP)) - ossl_raise(rb_eArgError, "1st argument must be OpenSSL::PKey::EC::Group"); - group_v = arg1; - GetECGroup(group_v, group); - - if (rb_obj_is_kind_of(arg2, cBN)) { - const BIGNUM *bn = GetBNPtr(arg2); - - point = EC_POINT_bn2point(group, bn, NULL, ossl_bn_ctx); - } else { - BIO *in = ossl_obj2bio(&arg1); - -/* BUG: finish me */ - - BIO_free(in); - - if (point == NULL) { - ossl_raise(eEC_POINT, "unknown type for 2nd arg"); - } - } - break; - default: - ossl_raise(rb_eArgError, "wrong number of arguments"); + 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); } - if (point == NULL) - ossl_raise(eEC_POINT, NULL); - - if (NIL_P(group_v)) - ossl_raise(rb_eRuntimeError, "missing group (internal error)"); + 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); @@ -1543,38 +1528,38 @@ static VALUE ossl_ec_point_set_to_infinity(VALUE self) /* * call-seq: - * point.to_bn(conversion_form = nil) => OpenSSL::BN + * point.to_octet_string(conversion_form) -> String * - * Convert the EC point into an octet string and store in an OpenSSL::BN. If - * _conversion_form_ is given, the point data is converted using the specified - * form. If not given, the default form set in the EC::Group object is used. + * Returns the octet string representation of the elliptic curve point. * - * See also EC::Point#point_conversion_form=. + * _conversion_form_ specifies how the point is converted. Possible values are: + * + * - +:compressed+ + * - +:uncompressed+ + * - +:hybrid+ */ static VALUE -ossl_ec_point_to_bn(int argc, VALUE *argv, VALUE self) +ossl_ec_point_to_octet_string(VALUE self, VALUE conversion_form) { EC_POINT *point; - VALUE form_obj, bn_obj; const EC_GROUP *group; point_conversion_form_t form; - BIGNUM *bn; + VALUE str; + size_t len; GetECPoint(self, point); GetECPointGroup(self, group); - rb_scan_args(argc, argv, "01", &form_obj); - if (NIL_P(form_obj)) - form = EC_GROUP_get_point_conversion_form(group); - else - form = parse_point_conversion_form_symbol(form_obj); - - bn_obj = rb_obj_alloc(cBN); - bn = GetBNPtr(bn_obj); - - if (EC_POINT_point2bn(group, point, form, bn, ossl_bn_ctx) == NULL) - ossl_raise(eEC_POINT, "EC_POINT_point2bn"); - - return bn_obj; + 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; } /* @@ -1799,7 +1784,7 @@ void Init_ossl_ec(void) rb_define_method(cEC_POINT, "set_to_infinity!", ossl_ec_point_set_to_infinity, 0); /* all the other methods */ - rb_define_method(cEC_POINT, "to_bn", ossl_ec_point_to_bn, -1); + rb_define_method(cEC_POINT, "to_octet_string", ossl_ec_point_to_octet_string, 1); rb_define_method(cEC_POINT, "mul", ossl_ec_point_mul, -1); id_i_group = rb_intern("@group"); |