From: Eric Biggers <ebiggers@kernel.org>
Date: Thu, 26 Mar 2026 00:14:58 +0000 (-0700)
Subject: crypto: dh - Use crypto_stdrng_get_bytes()
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e9ff291c9776c109a198eab5b5ac3828abf8507;p=thirdparty%2Fkernel%2Flinux.git

crypto: dh - Use crypto_stdrng_get_bytes()

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>
---

diff --git a/crypto/dh.c b/crypto/dh.c
index 8250eeeebd0fe..7ad4768716c89 100644
--- a/crypto/dh.c
+++ b/crypto/dh.c
@@ -388,13 +388,7 @@ static void *dh_safe_prime_gen_privkey(const struct dh_safe_prime *safe_prime,
 	 * 5.6.1.1.3, step 3 (and implicitly step 4): obtain N + 64
 	 * random bits and interpret them as a big endian integer.
 	 */
-	err = -EFAULT;
-	if (crypto_get_default_rng())
-		goto out_err;
-
-	err = crypto_rng_get_bytes(crypto_default_rng, (u8 *)key,
-				   oversampling_size);
-	crypto_put_default_rng();
+	err = crypto_stdrng_get_bytes(key, oversampling_size);
 	if (err)
 		goto out_err;