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authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 15:11:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 15:11:55 -0700
commit818e607b57c94ade9824dad63a96c2ea6b21baf3 (patch)
tree2c83a38a1d090da464c435486e4a2e6f4afbacd2 /include/crypto
parentff9a082fda424257976f08fce942609f358015e0 (diff)
parent86a574de4590ffe6fd3f3ca34cdcf655a78e36ec (diff)
downloadlinux-818e607b57c94ade9824dad63a96c2ea6b21baf3.tar.bz2
Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random driver updates from Ted Ts'o: "A number of improvements for the /dev/random driver; the most important is the use of a ChaCha20-based CRNG for /dev/urandom, which is faster, more efficient, and easier to make scalable for silly/abusive userspace programs that want to read from /dev/urandom in a tight loop on NUMA systems. This set of patches also improves entropy gathering on VM's running on Microsoft Azure, and will take advantage of a hw random number generator (if present) to initialize the /dev/urandom pool" (It turns out that the random tree hadn't been in linux-next this time around, because it had been dropped earlier as being too quiet. Oh well). * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: random: strengthen input validation for RNDADDTOENTCNT random: add backtracking protection to the CRNG random: make /dev/urandom scalable for silly userspace programs random: replace non-blocking pool with a Chacha20-based CRNG random: properly align get_random_int_hash random: add interrupt callback to VMBus IRQ handler random: print a warning for the first ten uninitialized random users random: initialize the non-blocking pool via add_hwgenerator_randomness()
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/chacha20.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/crypto/chacha20.h b/include/crypto/chacha20.h
index 274bbaeeed0f..20d20f681a72 100644
--- a/include/crypto/chacha20.h
+++ b/include/crypto/chacha20.h
@@ -16,6 +16,7 @@ struct chacha20_ctx {
u32 key[8];
};
+void chacha20_block(u32 *state, void *stream);
void crypto_chacha20_init(u32 *state, struct chacha20_ctx *ctx, u8 *iv);
int crypto_chacha20_setkey(struct crypto_tfm *tfm, const u8 *key,
unsigned int keysize);