Am Dienstag, 3. Juli 2018, 08:04:31 CEST schrieb Vinod Koul: Hi Vinod, > +static int qcom_rng_seed(struct crypto_rng *tfm, const u8 *seed, > + unsigned int slen) > +{ > + return 0; > +} One more question: is it not possible to mix in data into the DRNG? I thought it would be possible with the Qualcomm DRBG. Note, I am asking because of my /dev/random drop-in-replacement implementation, any RNG from the kernel crypto API can be configured to be used as an output DRNG. Though, this will only work if the DRNG also accepts seed from the software noise sources. Ciao Stephan