Commit 7ca99d81 authored by Herbert Xu's avatar Herbert Xu

crypto: rng - Add crypto_rng_set_entropy

This patch adds the function crypto_rng_set_entropy.  It is only
meant to be used by testmgr when testing RNG implementations by
providing fixed entropy data in order to verify test vectors.
Signed-off-by: default avatarHerbert Xu <>
parent acec27ff
......@@ -26,4 +26,10 @@ static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
return crypto_tfm_ctx(&tfm->base);
static inline void crypto_rng_set_entropy(struct crypto_rng *tfm,
const u8 *data, unsigned int len)
crypto_rng_alg(tfm)->set_ent(tfm, data, len);
......@@ -32,6 +32,8 @@ struct crypto_rng;
* up a new state, the seed must be provided by the
* consumer while invoking this function. The required
* size of the seed is defined with @seedsize .
* @set_ent: Set entropy that would otherwise be obtained from
* entropy source. Internal use only.
* @seedsize: The seed size required for a random number generator
* initialization defined with this variable. Some
* random number generators does not require a seed
......@@ -45,6 +47,8 @@ struct rng_alg {
const u8 *src, unsigned int slen,
u8 *dst, unsigned int dlen);
int (*seed)(struct crypto_rng *tfm, const u8 *seed, unsigned int slen);
void (*set_ent)(struct crypto_rng *tfm, const u8 *data,
unsigned int len);
unsigned int seedsize;
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