crypto: rmd128 - remove RIPE-MD 128 hash algorithm

RIPE-MD 128 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 <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

@@ -817,19 +817,6 @@ config CRYPTO_MICHAEL_MIC
 	  should not be used for other purposes because of the weakness
 	  of the algorithm.
 
-config CRYPTO_RMD128
-	tristate "RIPEMD-128 digest algorithm"
-	select CRYPTO_HASH
-	help
-	  RIPEMD-128 (ISO/IEC 10118-3:2004).
-
-	  RIPEMD-128 is a 128-bit cryptographic hash function. It should only
-	  be used as a secure replacement for RIPEMD. For other use cases,
-	  RIPEMD-160 should be used.
-
-	  Developed by Hans Dobbertin, Antoon Bosselaers and Bart Preneel.
-	  See <https://homes.esat.kuleuven.be/~bosselae/ripemd160.html>
-
 config CRYPTO_RMD160
 	tristate "RIPEMD-160 digest algorithm"
 	select CRYPTO_HASH

crypto/Makefile

@@ -67,7 +67,6 @@ obj-$(CONFIG_CRYPTO_XCBC) += xcbc.o
 obj-$(CONFIG_CRYPTO_NULL2) += crypto_null.o
 obj-$(CONFIG_CRYPTO_MD4) += md4.o
 obj-$(CONFIG_CRYPTO_MD5) += md5.o
-obj-$(CONFIG_CRYPTO_RMD128) += rmd128.o
 obj-$(CONFIG_CRYPTO_RMD160) += rmd160.o
 obj-$(CONFIG_CRYPTO_RMD256) += rmd256.o
 obj-$(CONFIG_CRYPTO_RMD320) += rmd320.o

crypto/ripemd.h

@@ -6,9 +6,6 @@
 #ifndef _CRYPTO_RMD_H
 #define _CRYPTO_RMD_H
 
-#define RMD128_DIGEST_SIZE      16
-#define RMD128_BLOCK_SIZE       64
-
 #define RMD160_DIGEST_SIZE      20
 #define RMD160_BLOCK_SIZE       64
 

crypto/tcrypt.c

@@ -71,7 +71,7 @@ static const char *check[] = {
 	"blowfish", "twofish", "serpent", "sha384", "sha512", "md4", "aes",
 	"cast6", "arc4", "michael_mic", "deflate", "crc32c", "tea", "xtea",
 	"khazad", "wp512", "wp384", "wp256", "tnepres", "xeta",  "fcrypt",
-	"camellia", "seed", "salsa20", "rmd128", "rmd160", "rmd256", "rmd320",
+	"camellia", "seed", "salsa20", "rmd160", "rmd256", "rmd320",
 	"lzo", "lzo-rle", "cts", "sha3-224", "sha3-256", "sha3-384",
 	"sha3-512", "streebog256", "streebog512",
 	NULL
@@ -1867,10 +1867,6 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 		ret += tcrypt_test("cts(cbc(aes))");
 		break;
 
-        case 39:
-		ret += tcrypt_test("rmd128");
-		break;
-
         case 40:
 		ret += tcrypt_test("rmd160");
 		break;
@@ -1955,10 +1951,6 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 		ret += tcrypt_test("xcbc(aes)");
 		break;
 
-	case 107:
-		ret += tcrypt_test("hmac(rmd128)");
-		break;
-
 	case 108:
 		ret += tcrypt_test("hmac(rmd160)");
 		break;
@@ -2409,10 +2401,6 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 		test_hash_speed("sha224", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
 		fallthrough;
-	case 314:
-		test_hash_speed("rmd128", sec, generic_hash_speed_template);
-		if (mode > 300 && mode < 400) break;
-		fallthrough;
 	case 315:
 		test_hash_speed("rmd160", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
@@ -2533,10 +2521,6 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 		test_ahash_speed("sha224", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
 		fallthrough;
-	case 414:
-		test_ahash_speed("rmd128", sec, generic_hash_speed_template);
-		if (mode > 400 && mode < 500) break;
-		fallthrough;
 	case 415:
 		test_ahash_speed("rmd160", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;

crypto/testmgr.c

@@ -4957,12 +4957,6 @@ static const struct alg_test_desc alg_test_descs[] = {
 		.suite = {
 			.hash = __VECS(hmac_md5_tv_template)
 		}
-	}, {
-		.alg = "hmac(rmd128)",
-		.test = alg_test_hash,
-		.suite = {
-			.hash = __VECS(hmac_rmd128_tv_template)
-		}
 	}, {
 		.alg = "hmac(rmd160)",
 		.test = alg_test_hash,
@@ -5275,12 +5269,6 @@ static const struct alg_test_desc alg_test_descs[] = {
 				.aad_iv = 1,
 			}
 		}
-	}, {
-		.alg = "rmd128",
-		.test = alg_test_hash,
-		.suite = {
-			.hash = __VECS(rmd128_tv_template)
-		}
 	}, {
 		.alg = "rmd160",
 		.test = alg_test_hash,

crypto/testmgr.h

@@ -3140,66 +3140,6 @@ static const struct hash_testvec md5_tv_template[] = {
 
 };
 
-/*
- * RIPEMD-128 test vectors from ISO/IEC 10118-3:2004(E)
- */
-static const struct hash_testvec rmd128_tv_template[] = {
-	{
-		.digest	= "\xcd\xf2\x62\x13\xa1\x50\xdc\x3e"
-			  "\xcb\x61\x0f\x18\xf6\xb3\x8b\x46",
-	}, {
-		.plaintext = "a",
-		.psize	= 1,
-		.digest	= "\x86\xbe\x7a\xfa\x33\x9d\x0f\xc7"
-			  "\xcf\xc7\x85\xe7\x2f\x57\x8d\x33",
-	}, {
-		.plaintext = "abc",
-		.psize	= 3,
-		.digest	= "\xc1\x4a\x12\x19\x9c\x66\xe4\xba"
-			  "\x84\x63\x6b\x0f\x69\x14\x4c\x77",
-	}, {
-		.plaintext = "message digest",
-		.psize	= 14,
-		.digest	= "\x9e\x32\x7b\x3d\x6e\x52\x30\x62"
-			  "\xaf\xc1\x13\x2d\x7d\xf9\xd1\xb8",
-	}, {
-		.plaintext = "abcdefghijklmnopqrstuvwxyz",
-		.psize	= 26,
-		.digest	= "\xfd\x2a\xa6\x07\xf7\x1d\xc8\xf5"
-			  "\x10\x71\x49\x22\xb3\x71\x83\x4e",
-	}, {
-		.plaintext = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcde"
-			     "fghijklmnopqrstuvwxyz0123456789",
-		.psize	= 62,
-		.digest	= "\xd1\xe9\x59\xeb\x17\x9c\x91\x1f"
-			  "\xae\xa4\x62\x4c\x60\xc5\xc7\x02",
-	}, {
-		.plaintext = "1234567890123456789012345678901234567890"
-			     "1234567890123456789012345678901234567890",
-		.psize	= 80,
-		.digest	= "\x3f\x45\xef\x19\x47\x32\xc2\xdb"
-			  "\xb2\xc4\xa2\xc7\x69\x79\x5f\xa3",
-	}, {
-		.plaintext = "abcdbcdecdefdefgefghfghighij"
-			     "hijkijkljklmklmnlmnomnopnopq",
-		.psize	= 56,
-		.digest	= "\xa1\xaa\x06\x89\xd0\xfa\xfa\x2d"
-			  "\xdc\x22\xe8\x8b\x49\x13\x3a\x06",
-	}, {
-		.plaintext = "abcdefghbcdefghicdefghijdefghijkefghijklfghi"
-			     "jklmghijklmnhijklmnoijklmnopjklmnopqklmnopqr"
-			     "lmnopqrsmnopqrstnopqrstu",
-		.psize	= 112,
-		.digest	= "\xd4\xec\xc9\x13\xe1\xdf\x77\x6b"
-			  "\xf4\x8d\xe9\xd5\x5b\x1f\x25\x46",
-	}, {
-		.plaintext = "abcdbcdecdefdefgefghfghighijhijk",
-		.psize	= 32,
-		.digest	= "\x13\xfc\x13\xe8\xef\xff\x34\x7d"
-			  "\xe1\x93\xff\x46\xdb\xac\xcf\xd4",
-	}
-};
-
 /*
  * RIPEMD-160 test vectors from ISO/IEC 10118-3:2004(E)
  */
@@ -5452,83 +5392,6 @@ static const struct hash_testvec hmac_md5_tv_template[] =
 	},
 };
 
-/*
- * HMAC-RIPEMD128 test vectors from RFC2286
- */
-static const struct hash_testvec hmac_rmd128_tv_template[] = {
-	{
-		.key	= "\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b\x0b",
-		.ksize	= 16,
-		.plaintext = "Hi There",
-		.psize	= 8,
-		.digest	= "\xfb\xf6\x1f\x94\x92\xaa\x4b\xbf"
-			  "\x81\xc1\x72\xe8\x4e\x07\x34\xdb",
-	}, {
-		.key	= "Jefe",
-		.ksize	= 4,
-		.plaintext = "what do ya want for nothing?",
-		.psize	= 28,
-		.digest	= "\x87\x5f\x82\x88\x62\xb6\xb3\x34"
-			  "\xb4\x27\xc5\x5f\x9f\x7f\xf0\x9b",
-	}, {
-		.key	= "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa",
-		.ksize	= 16,
-		.plaintext = "\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
-			"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
-			"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd"
-			"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd",
-		.psize	= 50,
-		.digest	= "\x09\xf0\xb2\x84\x6d\x2f\x54\x3d"
-			  "\xa3\x63\xcb\xec\x8d\x62\xa3\x8d",
-	}, {
-		.key	= "\x01\x02\x03\x04\x05\x06\x07\x08"
-			  "\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10"
-			  "\x11\x12\x13\x14\x15\x16\x17\x18\x19",
-		.ksize	= 25,
-		.plaintext = "\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
-			"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
-			"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd"
-			"\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd\xcd",
-		.psize	= 50,
-		.digest	= "\xbd\xbb\xd7\xcf\x03\xe4\x4b\x5a"
-			  "\xa6\x0a\xf8\x15\xbe\x4d\x22\x94",
-	}, {
-		.key	= "\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c\x0c",
-		.ksize	= 16,
-		.plaintext = "Test With Truncation",
-		.psize	= 20,
-		.digest	= "\xe7\x98\x08\xf2\x4b\x25\xfd\x03"
-			  "\x1c\x15\x5f\x0d\x55\x1d\x9a\x3a",
-	}, {
-		.key	= "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa",
-		.ksize	= 80,
-		.plaintext = "Test Using Larger Than Block-Size Key - Hash Key First",
-		.psize	= 54,
-		.digest	= "\xdc\x73\x29\x28\xde\x98\x10\x4a"
-			  "\x1f\x59\xd3\x73\xc1\x50\xac\xbb",
-	}, {
-		.key	= "\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xaa"
-			"\xaa\xaa",
-		.ksize	= 80,
-		.plaintext = "Test Using Larger Than Block-Size Key and Larger Than One "
-			   "Block-Size Data",
-		.psize	= 73,
-		.digest	= "\x5c\x6b\xec\x96\x79\x3e\x16\xd4"
-			  "\x06\x90\xc2\x37\x63\x5f\x30\xc5",
-	},
-};
-
 /*
  * HMAC-RIPEMD160 test vectors from RFC2286
  */