Add Jubjub curve

Author: srasoamiaramanana-ledger

include/ox_ec.h

@@ -235,6 +235,8 @@ enum cx_curve_e {
 
     CX_CURVE_EdBLS12 = 0x73,
 
+    CX_CURVE_JUBJUB = 0x74,
+
     /** High limit (not included) of Twisted Edwards curve ID */
     CX_CURVE_TWISTED_EDWARDS_END = 0x7F,
 

lib_cxng/src/cx_ecfp.c

@@ -229,7 +229,7 @@ cx_err_t cx_ecfp_generate_pair2_no_throw(cx_curve_t             curve,
     if (CX_CURVE_RANGE(curve, TWISTED_EDWARDS)) {
         uint8_t scal[114];
 
-        if (curve == CX_CURVE_EdBLS12) {
+        if ((curve == CX_CURVE_EdBLS12) || (curve == CX_CURVE_JUBJUB)) {
             CX_CHECK(cx_ecpoint_alloc(&W, private_key->curve));
             CX_CHECK(cx_ecdomain_generator_bn(curve, &W));
             CX_CHECK(cx_ecpoint_rnd_scalarmul(&W, private_key->d, private_key->d_len));