On 15/09/2021 00:19, Ken Goldman wrote:
I am doing the following, but the EVP_PKEY->pkey->rsa is null.
Am I misusing the API or missing a step?
Neither. This is normal. EVP_PKEY->pkey->rsa is only used if you have a
legacy key.
Matt
(error checking removed)
EVP_PKEY *rsa_pub_key = NULL;
EVP_PKEY_CTX *ctx = NULL;
OSSL_PARAM_BLD *param_bld = NULL;
OSSL_PARAM *params = NULL;
BIGNUM * n = NULL;
BIGNUM * e = NULL;
[these bignums are initialized using bin2bn]
param_bld = OSSL_PARAM_BLD_new();
irc = OSSL_PARAM_BLD_push_BN(param_bld, "n", n);
irc = OSSL_PARAM_BLD_push_BN(param_bld, "e", e);
params = OSSL_PARAM_BLD_to_param(param_bld);
(do I perhaps need an 'end'?
ctx = EVP_PKEY_CTX_new_from_name(NULL, "RSA", NULL);
irc = EVP_PKEY_fromdata_init(ctx);
irc = EVP_PKEY_fromdata(ctx, (EVP_PKEY **)rsa_pub_key, /*
freed by caller */
EVP_PKEY_PUBLIC_KEY, params);
Probing rsa_pub_key here in the debugger.
type = 6
references = 1
rsa = 0 (probably NULL)
