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crypto: intel/keembay-ocs-ecc - Use crypto_stdrng_get_bytes()

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Replace the sequence of crypto_get_default_rng(),
crypto_rng_get_bytes(), and crypto_put_default_rng() with the equivalent
helper function crypto_stdrng_get_bytes().

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2026-03-25 17:15:02 -07:00 committed by Herbert Xu
parent c30e1bbc95
commit eba92a2d7e
1 changed files with 4 additions and 13 deletions
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17
drivers/crypto/intel/keembay/keembay-ocs-ecc.c
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@ -230,12 +230,7 @@ static int kmb_ecc_point_mult(struct ocs_ecc_dev *ecc_dev,
int rc = 0;
/* Generate random nbytes for Simple and Differential SCA protection. */
rc = crypto_get_default_rng();
if (rc)
return rc;
rc = crypto_rng_get_bytes(crypto_default_rng, sca, nbytes);
crypto_put_default_rng();
rc = crypto_stdrng_get_bytes(sca, nbytes);
if (rc)
return rc;
@ -509,14 +504,10 @@ static int kmb_ecc_gen_privkey(const struct ecc_curve *curve, u64 *privkey)
* The maximum security strength identified by NIST SP800-57pt1r4 for
* ECC is 256 (N >= 512).
*
* This condition is met by the default RNG because it selects a favored
* DRBG with a security strength of 256.
* This condition is met by stdrng because it selects a favored DRBG
* with a security strength of 256.
*/
if (crypto_get_default_rng())
return -EFAULT;
rc = crypto_rng_get_bytes(crypto_default_rng, (u8 *)priv, nbytes);
crypto_put_default_rng();
rc = crypto_stdrng_get_bytes(priv, nbytes);
if (rc)
goto cleanup;