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crypto: 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 17:14:59 -07:00
committed by Herbert Xu
parent 9e9ff291c9
commit d6ea871d73
1 changed files with 3 additions and 8 deletions
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11
crypto/ecc.c
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@@ -1533,16 +1533,11 @@ int ecc_gen_privkey(unsigned int curve_id, unsigned int ndigits,
* 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;
/* Step 3: obtain N returned_bits from the DRBG. */
err = crypto_rng_get_bytes(crypto_default_rng,
(u8 *)private_key, nbytes);
crypto_put_default_rng();
err = crypto_stdrng_get_bytes(private_key, nbytes);
if (err)
return err;