Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1658255
| From | "Jason A. Donenfeld" <Jason@zx2c4.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using |
| Date | 2017-06-06 03:00 +0200 |
| Message-ID | <tPb0J-1BU-19@gated-at.bofh.it> (permalink) |
| References | <tPb0J-1BU-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Otherwise, we might be seeding the RNG using bad randomness, which is dangerous. Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> --- crypto/rng.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/crypto/rng.c b/crypto/rng.c index f46dac5288b9..e042437e64b4 100644 --- a/crypto/rng.c +++ b/crypto/rng.c @@ -48,12 +48,14 @@ int crypto_rng_reset(struct crypto_rng *tfm, const u8 *seed, unsigned int slen) if (!buf) return -ENOMEM; - get_random_bytes(buf, slen); + err = get_random_bytes_wait(buf, slen); + if (err) + goto out; seed = buf; } err = crypto_rng_alg(tfm)->seed(tfm, seed, slen); - +out: kzfree(buf); return err; } -- 2.13.0
Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
[PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 03:00 +0200
Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Theodore Ts'o <tytso@mit.edu> - 2017-06-06 05:10 +0200
Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 06:00 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Eric Biggers <ebiggers3@gmail.com> - 2017-06-06 06:50 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 14:40 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 17:30 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Eric Biggers <ebiggers3@gmail.com> - 2017-06-06 19:30 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 19:40 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Theodore Ts'o <tytso@mit.edu> - 2017-06-06 19:10 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 19:30 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Stephan Müller <smueller@chronox.de> - 2017-06-06 20:00 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-06 20:10 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2017-06-07 00:20 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Theodore Ts'o <tytso@mit.edu> - 2017-06-07 01:20 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Stephan Müller <smueller@chronox.de> - 2017-06-07 07:10 +0200
Re: [kernel-hardening] Re: [PATCH v3 04/13] crypto/rng: ensure that the RNG is ready before using Henrique de Moraes Holschuh <hmh@hmh.eng.br> - 2017-06-07 16:50 +0200
csiph-web