Hello , thank you all for the replies. Very useful.
I have seen in Openssl/crypto/RSA/rsa_local.h the definition of rsa_st has a pointer to RSA_METHOD and I can't see this filled in in any of the examples' set up or initializations, where is it filled in for the default provider , for the RSA algorithm?
I can see the methods pointers are used later down in the call chain from RSA_private_decrypt() in providers/implementation/asymciphers/rsa_enc but I can't find where these methods' pointers are set and I would like to understand how I could pass a different method pointer in the parameters for a different mod_exp operation , for example, or how I could set it on a completely new RSA implementation mimicking the one in the default provider but with different methods where I need them changed, minimizing the differences with the default provider's RSA.
Thank you
On Fri, 24 Sep 2021, 12:22 Matt Caswell, <matt@xxxxxxxxxxx> wrote:
On 24/09/2021 12:17, Dr Paul Dale wrote:
> What about: apps/rsa.c, apps/rsautl.c and apps/genrsa.c
> 3.0 doesn't use the RSA structure in the non-deprecated public API.
>
> You probably want the EVP_PKEY_fromdata call.
An example of building an RSA key from its constituent parts is
available on the EVP_PKEY_fromdata() man page:
https://www.openssl.org/docs/man3.0/man3/EVP_PKEY_fromdata.html
Matt
>
>
> Pauli
>
>
> On 24/9/21 8:55 pm, Antonio Santagiuliana wrote:
>> Hello
>> Is there any app or command in the current Openssl master repository
>> that initialises and uses the new RSA provider?
>> I would like to see how the RSA* context parameter is filled in and
>> used, but I can't find an example using the RSA provider.
>>
>>
>> Thank you
>>
>
