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authorArd Biesheuvel <ardb@kernel.org>2021-01-05 17:47:55 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2021-01-14 17:10:28 +1100
commit2e9440ae6eab492572463d8cb266381264867723 (patch)
treee0a8a0bf7105811ec7a189aeef2e6d6fdd67aacb /crypto
parenta1f91ecf812ac333ee2897f3eb2d8f4f6b4ce942 (diff)
crypto: x86/serpent - drop CTR mode implementation
Serpent in CTR mode is never used by the kernel directly, and is highly unlikely to be relied upon by dm-crypt or algif_skcipher. So let's drop the accelerated CTR mode implementation, and instead, rely on the CTR template and the bare cipher. Acked-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig
index ea788cab8c7d..dd48c3bab3f5 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1539,6 +1539,7 @@ config CRYPTO_SERPENT_SSE2_X86_64
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
+ imply CRYPTO_CTR
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
@@ -1558,6 +1559,7 @@ config CRYPTO_SERPENT_SSE2_586
select CRYPTO_GLUE_HELPER_X86
select CRYPTO_SERPENT
select CRYPTO_SIMD
+ imply CRYPTO_CTR
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.
@@ -1578,6 +1580,7 @@ config CRYPTO_SERPENT_AVX_X86_64
select CRYPTO_SERPENT
select CRYPTO_SIMD
imply CRYPTO_XTS
+ imply CRYPTO_CTR
help
Serpent cipher algorithm, by Anderson, Biham & Knudsen.