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diff --git a/crypto/evp/ctrl_params_translate.c b/crypto/evp/ctrl_params_translate.c
index 448a3c3043c1c..9010fa6c4638c 100644
--- a/crypto/evp/ctrl_params_translate.c
+++ b/crypto/evp/ctrl_params_translate.c
@@ -1134,6 +1134,7 @@ static int fix_ec_paramgen_curve_nid(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
+ char *p2 = NULL;
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
@@ -1146,13 +1147,25 @@ static int fix_ec_paramgen_curve_nid(enum state state,
if (state == PRE_CTRL_TO_PARAMS) {
ctx->p2 = (char *)OBJ_nid2sn(ctx->p1);
ctx->p1 = 0;
+ } else if (state == PRE_PARAMS_TO_CTRL) {
+ /*
+ * We're translating from params to ctrl and setting the curve name.
+ * The ctrl function needs it to be a NID, but meanwhile, we need
+ * space to get the curve name from the param. |ctx->name_buf| is
+ * sufficient for that.
+ * The double indirection is necessary for default_fixup_args()'s
+ * call of OSSL_PARAM_get_utf8_string() to be done correctly.
+ */
+ p2 = ctx->name_buf;
+ ctx->p2 = &p2;
+ ctx->sz = sizeof(ctx->name_buf);
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_PARAMS_TO_CTRL) {
- ctx->p1 = OBJ_sn2nid(ctx->p2);
+ ctx->p1 = OBJ_sn2nid(p2);
ctx->p2 = NULL;
}
@@ -2789,6 +2802,7 @@ static int evp_pkey_ctx_setget_params_to_ctrl(EVP_PKEY_CTX *pctx,
if (translation->fixup_args != NULL)
fixup = translation->fixup_args;
ctx.action_type = translation->action_type;
+ ctx.ctrl_cmd = translation->ctrl_num;
}
ctx.pctx = pctx;
ctx.params = params;