On Thu, Oct 17, 2019 at 09:08:59PM +0200, Ard Biesheuvel wrote:
> diff --git a/lib/crypto/libchacha.c b/lib/crypto/libchacha.c
> new file mode 100644
> index ..7b4b97811f71
> --- /dev/null
> +++ b/lib/crypto/libchacha.c
> @@ -0,0 +1,35 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
On Thu, Oct 17, 2019 at 09:08:59PM +0200, Ard Biesheuvel wrote:
> +static inline void chacha_crypt(u32 *state, u8 *dst, const u8 *src,
> + unsigned int bytes, int nrounds)
> +{
> + if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_CHACHA))
> + chacha_crypt_arch(
Currently, our generic ChaCha implementation consists of a permute
function in lib/chacha.c that operates on the 64-byte ChaCha state
directly [and which is always included into the core kernel since it
is used by the /dev/random driver], and the crypto API plumbing to
expose it as a skcipher.
In
