Am Donnerstag, 17. November 2016, 09:07:48 CET schrieb Corentin Labbe: Hi Corentin, > > Seed again, or just do not seed (and so return -EAGAIN for read() function) > until ready_callback ?
This is your choice. But for the start sequence, you should not simply rely on get_random_bytes. For the DRBG in crypto/drbg.c we seed with get_random_bytes and the Jitter RNG in case the input_pool is not fully seeded. The reseed trigger is reduced to 50 DRBG requests, i.e. after 50 requests, the DRBG again reseeds from get_random_bytes / Jitter RNG. This is continued until the input_pool has been sufficiently seeded (i.e. the registered callback is triggered). At that point, another get_random_bytes call is made, the Jitter RNG is deactivated and the reseed threshold is set to the common value. Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
