handle negative scalars correctly when doing point multiplication

[openssl.git] / crypto / ec / ecp_recp.c

diff --git a/crypto/ec/ecp_recp.c b/crypto/ec/ecp_recp.c
index 1306b76f361a228b21b61c7d7fb40fe82aa34d1c..fec843b5c85b7aafb6b94d93456320f91ef5245f 100644 (file)
--- a/crypto/ec/ecp_recp.c
+++ b/crypto/ec/ecp_recp.c
@@ -1,4 +1,3 @@
-/* TODO */
 /* crypto/ec/ecp_recp.c */
 /* ====================================================================
  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
@@ -55,3 +54,80 @@
  */
 
 #include "ec_lcl.h"
+
+#if 0
+const EC_METHOD *EC_GFp_recp_method(void)
+       {
+       static const EC_METHOD ret = {
+               ec_GFp_recp_group_init,
+               ec_GFp_recp_group_finish,
+               ec_GFp_recp_group_clear_finish,
+               ec_GFp_recp_group_copy,
+               ec_GFp_recp_group_set_curve_GFp,
+               ec_GFp_simple_group_get_curve_GFp,
+               ec_GFp_simple_group_set_generator,
+               ec_GFp_simple_group_get0_generator,
+               ec_GFp_simple_group_get_order,
+               ec_GFp_simple_group_get_cofactor,
+               ec_GFp_simple_point_init,
+               ec_GFp_simple_point_finish,
+               ec_GFp_simple_point_clear_finish,
+               ec_GFp_simple_point_copy,
+               ec_GFp_simple_point_set_to_infinity,
+               ec_GFp_simple_set_Jprojective_coordinates_GFp,
+               ec_GFp_simple_get_Jprojective_coordinates_GFp,
+               ec_GFp_simple_point_set_affine_coordinates_GFp,
+               ec_GFp_simple_point_get_affine_coordinates_GFp,
+               ec_GFp_simple_set_compressed_coordinates_GFp,
+               ec_GFp_simple_point2oct,
+               ec_GFp_simple_oct2point,
+               ec_GFp_simple_add,
+               ec_GFp_simple_dbl,
+               ec_GFp_simple_invert,
+               ec_GFp_simple_is_at_infinity,
+               ec_GFp_simple_is_on_curve,
+               ec_GFp_simple_cmp,
+               ec_GFp_simple_make_affine,
+               ec_GFp_simple_points_make_affine,
+               ec_GFp_recp_field_mul,
+               ec_GFp_recp_field_sqr,
+               0 /* field_encode */,
+               0 /* field_decode */,
+               0 /* field_set_to_one */ };
+
+       return &ret;
+       }
+#endif
+
+int ec_GFp_recp_group_init(EC_GROUP *group)
+       {
+       int ok;
+
+       ok = ec_GFp_simple_group_init(group);
+       group->field_data1 = NULL;
+       return ok;
+       }
+
+
+int ec_GFp_recp_group_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+/* TODO */
+
+
+void ec_GFp_recp_group_finish(EC_GROUP *group);
+/* TODO */
+
+
+void ec_GFp_recp_group_clear_finish(EC_GROUP *group);
+/* TODO */
+
+
+int ec_GFp_recp_group_copy(EC_GROUP *dest, const EC_GROUP *src);
+/* TODO */
+
+
+int ec_GFp_recp_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx);
+/* TODO */
+
+
+int ec_GFp_recp_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx);
+/* TODO */