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author | Ard Biesheuvel <ardb@kernel.org> | 2019-11-08 13:22:08 +0100 |
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committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-11-17 09:02:39 +0800 |
commit | e0a4e2e022bda4c9d1278d189d1c05b99fc57b6c (patch) | |
tree | 9c688d93d774bda02c2cddee5c4e920bca274dbf /crypto/Kconfig | |
parent | 8a68f716aa88e5e7dc1cfebd6bbbc0d85192c1f7 (diff) | |
download | linux-crypto-e0a4e2e022bda4c9d1278d189d1c05b99fc57b6c.tar.gz linux-crypto-e0a4e2e022bda4c9d1278d189d1c05b99fc57b6c.zip |
crypto: chacha - move existing library code into lib/crypto
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 order to support in-kernel users that need the ChaCha streamcipher
but have no need [or tolerance] for going through the abstractions of
the crypto API, let's expose the streamcipher bits via a library API
as well, in a way that permits the implementation to be superseded by
an architecture specific one if provided.
So move the streamcipher code into a separate module in lib/crypto,
and expose the init() and crypt() routines to users of the library.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/Kconfig')
-rw-r--r-- | crypto/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index 9def945e..ae4495ae 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -1412,6 +1412,7 @@ config CRYPTO_SALSA20 config CRYPTO_CHACHA20 tristate "ChaCha stream cipher algorithms" + select CRYPTO_LIB_CHACHA_GENERIC select CRYPTO_SKCIPHER help The ChaCha20, XChaCha20, and XChaCha12 stream cipher algorithms. |