EVP_PKEY_get1_RSA

[Tan Eng Ten]

Hi,
	I need to set app data to an RSA object encapsulated in an EVP_PKEY, so 
I did the following:

void set_app_data(EVP_PKEY *pkey)
{
        ...
        rsa = EVP_PKEY_get1_RSA(pkey);
        RSA_set_app_data(rsa, app_data);
        RSA_free(rsa);
        ...
}
	We shouldn't access pkey->pkey.rsa directly and the only "get" method I 
could find is EVP_PKEY_get1_RSA(). I've looked into this function and it 
up ref the RSA object, and becoz of this I guess I have to call 
RSA_free() once I am done with the RSA object.

	But from the codes, it looks weird that I am free'ing the RSA object 
reference after doing something to it, as if negating the work of 
RSA_set_app_data(). Is there a better way to do this?

Thanks... ET
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