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authorArd Biesheuvel <ardb@kernel.org>2019-11-08 13:22:08 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2019-11-17 09:02:39 +0800
commit5fb8ef25803ef33e2eb60b626435828b937bed75 (patch)
tree156401ad072c1acc18f74cbdf8eb31859191b9ac /lib/crypto/Makefile
parent746b2e024c67aa605ac12d135cd7085a49cf9dc4 (diff)
downloadlinux-5fb8ef25803ef33e2eb60b626435828b937bed75.tar.bz2
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API, let's expose the streamcipher bits via a library API as well, in a way that permits the implementation to be superseded by an architecture specific one if provided.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 'lib/crypto/Makefile')
-rw-r--r--lib/crypto/Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/crypto/Makefile b/lib/crypto/Makefile
index 63de4cb3fcf8..0ce40604e104 100644
--- a/lib/crypto/Makefile
+++ b/lib/crypto/Makefile
@@ -1,5 +1,9 @@
# SPDX-License-Identifier: GPL-2.0
+# chacha is used by the /dev/random driver which is always builtin
+obj-y += chacha.o
+obj-$(CONFIG_CRYPTO_LIB_CHACHA_GENERIC) += libchacha.o
+
obj-$(CONFIG_CRYPTO_LIB_AES) += libaes.o
libaes-y := aes.o