Performing RSA Signature Operations Based on the Context

For details about how to perform RSA signature operations based on the context, see Performing RSA Signature Operations and Generating a Key Based on the Context. This section only adds the tag input parameter for invoking the callback function in the poll thread after the task is complete.

struct rsa_async_tag {
void *ctx;
void *pool;
int thread_id;
int cnt;
} *tag;
int i = 0;
tag = malloc(sizeof(*tag));
tag->ctx = ctx;
tag->thread_id = thread_id;
tag->cnt = i;
tag->pool = pool;
wcrypto_do_rsa(ctx, &opdata, tag);