crypto: rmd256 - remove RIPE-MD 256 hash algorithm

RIPE-MD 256 is never referenced anywhere in the kernel, and unlikely to be depended upon by userspace via AF_ALG. So let's remove it Signed-off-by: Ard Biesheuvel <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
niw · Jan 29, 2021 · c15d416 · c15d416
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diff --git a/crypto/Kconfig b/crypto/Kconfig
@@ -834,18 +834,6 @@ config CRYPTO_RMD160
 	  Developed by Hans Dobbertin, Antoon Bosselaers and Bart Preneel.
 	  See <https://homes.esat.kuleuven.be/~bosselae/ripemd160.html>
 
-config CRYPTO_RMD256
-	tristate "RIPEMD-256 digest algorithm"
-	select CRYPTO_HASH
-	help
-	  RIPEMD-256 is an optional extension of RIPEMD-128 with a
-	  256 bit hash. It is intended for applications that require
-	  longer hash-results, without needing a larger security level
-	  (than RIPEMD-128).
-
-	  Developed by Hans Dobbertin, Antoon Bosselaers and Bart Preneel.
-	  See <https://homes.esat.kuleuven.be/~bosselae/ripemd160.html>
-
 config CRYPTO_RMD320
 	tristate "RIPEMD-320 digest algorithm"
 	select CRYPTO_HASH

diff --git a/crypto/Makefile b/crypto/Makefile
@@ -68,7 +68,6 @@ obj-$(CONFIG_CRYPTO_NULL2) += crypto_null.o
 obj-$(CONFIG_CRYPTO_MD4) += md4.o
 obj-$(CONFIG_CRYPTO_MD5) += md5.o
 obj-$(CONFIG_CRYPTO_RMD160) += rmd160.o
-obj-$(CONFIG_CRYPTO_RMD256) += rmd256.o
 obj-$(CONFIG_CRYPTO_RMD320) += rmd320.o
 obj-$(CONFIG_CRYPTO_SHA1) += sha1_generic.o
 obj-$(CONFIG_CRYPTO_SHA256) += sha256_generic.o

diff --git a/crypto/ripemd.h b/crypto/ripemd.h
@@ -9,9 +9,6 @@
 #define RMD160_DIGEST_SIZE      20
 #define RMD160_BLOCK_SIZE       64
 
-#define RMD256_DIGEST_SIZE      32
-#define RMD256_BLOCK_SIZE       64
-
 #define RMD320_DIGEST_SIZE      40
 #define RMD320_BLOCK_SIZE       64
 

diff --git a/crypto/rmd256.c b/crypto/rmd256.c