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: Herbert Xu <herb...@gondor.apana.org.au>
---
include/crypto/internal/rng.h | 6 ++++++
include/crypto/rng.h | 4 ++++
2 files changed, 10 insertions(+)
diff --git a/include/crypto/internal/rng.h b/include/crypto/internal/rng.h
index 76f3c95..93d41bc 100644
--- a/include/crypto/internal/rng.h
+++ b/include/crypto/internal/rng.h
@@ -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);
+}
+
#endif
diff --git a/include/crypto/rng.h b/include/crypto/rng.h
index 133f044..cc22e52 100644
--- a/include/crypto/rng.h
+++ b/include/crypto/rng.h
@@ -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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