Commit c0d36727 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: rng - Ensure set_ent is always present 



Ensure that set_ent is always set since only drbg provides it.

Fixes: 77ebdabe ("crypto: af_alg - add extra parameters for DRBG interface")
Reported-by: default avatarYiqi Sun <sunyiqixm@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ca1354f7

crypto/rng.c

+8 −0
Original line number Diff line number Diff line
@@ -168,6 +168,11 @@ int crypto_del_default_rng(void) 
EXPORT_SYMBOL_GPL(crypto_del_default_rng);

#endif



static void rng_default_set_ent(struct crypto_rng *tfm, const u8 *data,

				unsigned int len)

{

}



int crypto_register_rng(struct rng_alg *alg)

{

	struct crypto_alg *base = &alg->base;
@@ -179,6 +184,9 @@ int crypto_register_rng(struct rng_alg *alg) 
	base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;

	base->cra_flags |= CRYPTO_ALG_TYPE_RNG;



	if (!alg->set_ent)

		alg->set_ent = rng_default_set_ent;



	return crypto_register_alg(base);

}

EXPORT_SYMBOL_GPL(crypto_register_rng);