[openssl-users] Creating PKCS#8 from pvk format

[Wim Lewis]

On 4. des. 2018, at 4:00 e.h., zhongju li via openssl-users <openssl-users at openssl.org> wrote:
> Now I need to convert the key in RSA format to EVP_PKEY, then to PKCS#8. I have tried the following functions, all of these functions return 0 (failure) without any further debugging information/clues:
> EVP_PKEY_assign_RSA(pEvpkey, rsa);

Is it possible that pEvpkey or rsa is NULL? (You need to create a EVP_PKEY with EVP_PKEY_new() before putting a specific key into it.)

Otherwise, have you checked whether there is anything in the openssl error stack (using ERR_get_error(), ERR_print_errors_fp(), or similar)?

> I did google searching, but have not figured out why the about functions failed (one posting mentions “export version” vs. domestic version??).

There used to be different versions because of US export laws but I don't think that has been the case for many years.