EVP_PKEY_fromdata_init returns unsupported.

[William Roberts]

Hi Kory,

its the line:
genctx = EVP_PKEY_CTX_new_from_name(libctx, "RSA", NULL);

There's a snippet in the first email or is there something else you're
asking me and I'm not groking it?

Thanks,
Bill

On Fri, Feb 25, 2022 at 4:16 PM Kory Hamzeh <kory at avatarci.com> wrote:
>
> Hi Bill,
>
> How are you creating the EVP_PKEY_CTX?
>
> Kory
>
>
> > On Feb 25, 2022, at 2:07 PM, William Roberts <bill.c.roberts at gmail.com> wrote:
> >
> > Hello,
> >
> > In openssl 3.0.1 the following code hits the ctx->keymgt is null check
> > and thus returns -2
> > in pmeth_gn.c:
> > static int fromdata_init(EVP_PKEY_CTX *ctx, int operation)
> > {
> >    if (ctx == NULL || ctx->keytype == NULL)
> >        goto not_supported;
> >
> >    evp_pkey_ctx_free_old_ops(ctx);
> >    if (ctx->keymgmt == NULL)
> >        goto not_supported;
> >
> > The callpath comes in from EVP_PKEY_fromdata_init:
> >
> > libctx = OSSL_LIB_CTX_new()
> > genctx = EVP_PKEY_CTX_new_from_name(libctx, "RSA", NULL);
> > int rc = EVP_PKEY_fromdata_init(genctx);
> >
> > I have no idea why it returns unsupported... any ideas?
> > I also tried replacing EVP_PKEY_CTX_new_from_name  with
> > EVP_PKEY_CTX_new_id, same error.
> >
> > Thanks,
> > Bill
>